CN103009593B - Self-diagnostic system and method of injection molding machine - Google Patents

Self-diagnostic system and method of injection molding machine Download PDF

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CN103009593B
CN103009593B CN201210592344.7A CN201210592344A CN103009593B CN 103009593 B CN103009593 B CN 103009593B CN 201210592344 A CN201210592344 A CN 201210592344A CN 103009593 B CN103009593 B CN 103009593B
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preset range
injection machine
performance parameter
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analysis module
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CN103009593A (en
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孙凌财
曹峥
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NINGBO HONGXUN TECHNOLOGY CO LTD
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NINGBO HONGXUN TECHNOLOGY CO LTD
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Abstract

The invention discloses a self-diagnostic system and method of an injection molding machine. The self-diagnostic system comprises a detection module connected with the injection molding machine, a parameter analysis module connected with the detection module, and a display module connected with the parameter analysis module. The self-diagnostic method comprises the following steps of: obtaining at least one performance parameter of the injection molding machine in real time, judging whether the performance parameter is in the respective preset range; and respectively displaying a judgment result of each performance parameter. According to the self-diagnostic system, the detection module is used for obtaining the performance parameter of the injection molding machine in real time, the parameter analysis module is used for judging whether the performance parameter is in the preset range, the display module is used for displaying the judgment result, and therefore, the self-diagnosis of injection molding machine failures is realized, and workers can easily know abnormal performance parameter of the current injection molding machine according to the displayed result, thus taking correspondingly measures. Therefore, the embodiment of the invention greatly reduces the workload of the workers, reduces the requirements on working experience of the workers and solves the problem of the prior art.

Description

Injection machine self-diagnosable system and method
Technical field
The application relates to detection technique field, particularly relates to a kind of injection machine self-diagnosable system and method.
Background technology
Injection machine utilizes mould for plastics to make the main former of the plastic products of various shape thermoplastic or thermosetting material.The main building block of injection machine comprises driver, motor, pump, oil cylinder and corresponding mechanical moving element.Above-mentioned parts connect successively, under the control of host computer, injection machine realizes the startup of motor, stopping and rotational speed regulation by driver, thus the pressure achieved pump and Flow-rate adjustment, and then promotion oil cylinder, the final mechanical moving element that controls completes corresponding action.For guaranteeing normal operation, injection machine being also provided with fault alarm, reporting to the police when the above-mentioned component failure of injection machine.Now whether staff needs the parameter of the critical component detecting injection machine abnormal, to determine failure cause, and then takes corresponding measure to eliminate fault.Owing to causing the reason of fault alarm to be diversified, for the staff lacked experience, it has to detect one by one multiple parameters of multiple parts that may cause this fault, and workload is large, efficiency is low.
Summary of the invention
In view of this, the application's object is to provide a kind of injection machine self-diagnosable system and method, with solve existing injection machine fault detection method efficiency low, high problem is required to staff's working experience.
For achieving the above object, the application provides following technical scheme:
A kind of injection machine self-diagnosable system, comprising:
Detection module, is connected with injection machine, at least one performance parameter of injection machine described in Real-time Obtaining;
Parameter analysis module, is connected with described detection module, for judging described performance parameter whether in respective preset range;
Display module, with described Parameter analysis model calling, for showing the judged result to each performance parameter respectively.
Preferably, described system also comprises:
Transfinite counting module, and with described Parameter analysis model calling, for when performance parameter described at least one is not in corresponding preset range, the numerical value that will transfinite adds 1;
First directive generation module, is connected with described counting module, for when described in transfinite numerical value be greater than 1 time, generate cutoff command immediately, when the described numerical value that transfinites equals 1, generate automatically protect instruction;
First Executive Module, is connected with described first directive generation module and injection machine respectively, for when described in receiving immediately cutoff command time, control described injection machine and stop immediately;
Automatic protection module, is connected with described first directive generation module and injection machine respectively, for according to described automatic protection instruction by the power adjusting of described injection machine to protecting power.
Preferably, described performance parameter at least comprises moment of torsion and the rotating speed of motor;
Described system also comprises:
Moyor analysis module, with described Parameter analysis model calling, for when described Parameter analysis module judges that described performance parameter is all in preset range, calculates motor driven efficiency and judges that whether described motor driven efficiency is abnormal;
Motor analysis module, be connected with described moyor analysis module, for when described motor driven efficiency is abnormal, the ratio Kt judging the input current of described motor and described moment of torsion respectively whether in the first preset range, whether the rotating speed n of described motor in the second preset range, and when described Kt not in the first preset range and/or described n not in the second preset range time, generate information and the second cutoff command;
Second Executive Module, is connected with described motor analysis module and injection machine respectively, for when receiving described second cutoff command, controlling described injection machine and stopping after the second Preset Time;
And/or,
Described performance parameter at least comprises moment of torsion and the rotating speed of motor, and the pressure of pumping and flow;
Described system also comprises:
Pumping efficiency analysis module, with described Parameter analysis model calling, for when described Parameter analysis module judges that described performance parameter is all in preset range, calculates pumping transmission efficiency and judges that whether described pumping transmission efficiency is abnormal;
Pumping analysis module, be connected with described pumping efficiency analysis module, during for reaching transmission efficiency exception when described pump, the ratio K judging described pressure and moment of torsion respectively whether in the 3rd preset range, described flow with the rate of change Qn of described rotation speed change whether in the 4th preset range, and when described K not in the 3rd preset range and/or described Qn not in the 4th preset range time, generate information and the 3rd cutoff command;
3rd Executive Module, is connected with described pumping analysis module and injection machine, for when receiving described 3rd cutoff command, controlling described injection machine and stopping after the 3rd Preset Time.
Preferably, when described system comprises moyor analysis module, described system also comprises:
Motor characteristics analysis module, be connected with described moyor analysis module, for when described moyor analysis module judges that described motor driven efficiency is without exception, judge that the ratio In of described input current and rotating speed is whether in the 5th preset range, and when described In is not in the 5th preset range, generate information and the 4th cutoff command;
4th Executive Module, is connected with described motor characteristics analysis module and injection machine, for when receiving described 4th cutoff command, controlling described injection machine and stopping after the 4th Preset Time;
When described sexual system comprises pumping efficiency analysis module, described system also comprises:
Pumping specificity analysis module, be connected with described pumping efficiency analysis module, for when described pumping transmission efficiency is without exception, judge growth rate Pn that described pressure increases with rotating speed whether in the 6th preset range, and when described Pn is not in the 6th preset range, generate information and the 5th cutoff command;
5th Executive Module, with described pumping specificity analysis model calling, for when receiving described 5th cutoff command, controlling described injection machine and stopping after the 5th Preset Time.
Preferably, described performance parameter also comprises at least one in following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
A kind of injection machine self-diagnosing method, comprising:
At least one performance parameter of injection machine described in Real-time Obtaining;
Judge described performance parameter whether in respective preset range;
Show the judged result to each performance parameter respectively.
Preferably, described method also comprises:
When performance parameter described at least one is not in corresponding preset range, the numerical value that transfinites adds 1;
If described in the numerical value that transfinites be greater than 1, then control described injection machine and stop immediately;
If described in the numerical value that transfinites equal 1, then the power adjusting of described injection machine is to protecting power, and shows corresponding information.
Preferably, described performance parameter at least comprises moment of torsion and the rotating speed of motor;
Described method also comprises:
Calculate motor driven efficiency and judge that whether described motor driven efficiency is abnormal;
When described motor driven efficiency is abnormal, the ratio Kt judging the input current of described motor and described moment of torsion respectively whether in the first preset range, whether the rotating speed n of described motor in the second preset range;
When described Kt not in the first preset range and/or described n not in the second preset range time, show corresponding information and control described injection machine and stop after the second Preset Time;
And/or,
Described performance parameter at least comprises moment of torsion and the rotating speed of motor, and the pressure of pumping and flow;
Described method also comprises:
Calculate pumping transmission efficiency and judge that whether described pumping transmission efficiency is abnormal;
When described pumping transmission efficiency is abnormal, the ratio K judging described pressure and moment of torsion respectively whether in the 3rd preset range, described flow with the rate of change Qn of described rotation speed change whether in the 4th preset range;
When described K not in the 3rd preset range and/or described Qn not in the 4th preset range, show corresponding information and control described injection machine and stop after the 3rd Preset Time.
Preferably, when judging that described motor driven efficiency is without exception, described method also comprises:
Judge that the ratio In of described input current and rotating speed is whether in the 5th preset range;
When described In is not in the 5th preset range, shows corresponding information and control described injection machine and stop after the 4th Preset Time;
When judging that described pumping transmission efficiency is without exception, described method also comprises:
Judge growth rate Pn that described pressure increases with rotating speed whether in the 6th preset range;
When described Pn is not in the 6th preset range, shows corresponding information and control described injection machine and stop after the 5th Preset Time.
Preferably, described performance parameter also comprises at least one in following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
As can be seen from above-mentioned technical scheme, the application is by the performance parameter of Real-time Obtaining injection machine, judge and show above-mentioned performance parameter whether in preset range, achieve injection machine fault self-diagnosis, according to display result, staff easily can learn which performance parameter of current injection machine is abnormal, thus take corresponding measure.With the existing mode detecting all parts of injection machine after alarm equipment alarm again, the embodiment of the present application greatly reduces the workload of staff, reduces the working experience requirement to staff, improves fault diagnosis efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The injection machine self-diagnosing method flow chart that Fig. 1 provides for the embodiment of the present application one;
The injection machine self-diagnosing method flow chart that Fig. 2 provides for the embodiment of the present application two;
The injection machine self-diagnosing method flow chart that Fig. 3 provides for the embodiment of the present application three;
The injection machine self-diagnosing method flow chart that Fig. 4 provides for the embodiment of the present application four;
The motor driven efficiency that Fig. 5 provides for the embodiment of the present application and temperature relation schematic diagram;
The ratio Kt of electric current with moment of torsion that Fig. 6 provides for the embodiment of the present application and the relation schematic diagram of temperature t;
The relation schematic diagram of the rotating speed n that Fig. 7 provides for the embodiment of the present application and output frequency f;
The motor input current that Fig. 8 the embodiment of the present application provides and the relation schematic diagram of rotating speed;
The ratio K of the pressure that Fig. 9 the embodiment of the present application provides with moment of torsion and the relation schematic diagram of temperature t;
The relation schematic diagram of the pumping flow that Figure 10 provides for the embodiment of the present application and motor rotary speed;
The relation schematic diagram of the engine pressure that Figure 11 provides for the embodiment of the present application and motor rotary speed;
The injection machine self-diagnosable system structure chart that Figure 12 provides for the embodiment of the present application five;
The injection machine self-diagnosable system structure chart that Figure 13 provides for the embodiment of the present application six;
The injection machine self-diagnosable system structure chart that Figure 14 provides for the embodiment of the present application seven;
The injection machine self-diagnosable system structure chart that Figure 15 provides for the embodiment of the present application eight.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
The embodiment of the present application discloses a kind of injection machine self-diagnosable system and method, with solve existing injection machine fault detection method efficiency low, high problem is required to staff's working experience.
With reference to Fig. 1, the injection machine self-diagnosing method that the embodiment of the present application one provides, comprises the steps:
S1: at least one performance parameter of injection machine described in Real-time Obtaining;
Concrete, by the checkout equipment such as sensor, speed changer, injection machine is detected in real time, thus obtain its performance parameter.
S2: judge described performance parameter whether in respective preset range;
Concrete, judge described performance parameter whether in respective preset range by data processing equipments such as single-chip microcomputers, and generate judged result.
S3: show the judged result to each performance parameter respectively.
Concrete, display can be connected with the actuating unit of step S2, by the judged result to each performance parameter in this display step display S2.Certainly, also can show the occurrence of each performance parameter simultaneously.
From said method step, the embodiment of the present application is by the performance parameter of Real-time Obtaining injection machine, judge and show above-mentioned performance parameter whether in preset range, achieve injection machine fault self-diagnosis, according to display result, staff easily can learn which performance parameter of current injection machine is abnormal, thus take corresponding measure.With the existing mode detecting all parts of injection machine after alarm equipment alarm again, the embodiment of the present application greatly reduces the workload of staff, reduces the working experience requirement to staff, improves fault diagnosis efficiency.
See Fig. 2, the injection machine self-diagnosing method that the embodiment of the present application two provides, comprises the steps:
S1: at least one performance parameter of injection machine described in Real-time Obtaining;
S2: judge described performance parameter whether in respective preset range, when performance parameter described at least one is not in corresponding preset range, performs step S4, otherwise performs step S3;
S3: the numerical value x that will transfinite sets to 0, and shows the judged result to each performance parameter respectively, and this self diagnosis terminates;
S4: the numerical value x that will transfinite adds 1, and shows the judged result to each performance parameter respectively;
S5: when x is greater than 1, controls described injection machine and stops immediately; When x equals 1, then by the power adjusting of injection machine to protecting power, and show corresponding information.
The power adjusting of injection machine is different because of performance parameter to the concrete grammar of protection power.Such as; if the performance parameter exceeding preset range is the rotating speed of motor; the electric current then exported by adjusting driver makes the power of injection machine reach protection power; if the performance parameter exceeding preset range is the pressure of pumping, then the voltage exported by adjusting driver makes the power of injection machine reach protection power.
According to experience or the test of many times of staff, preset and stored adjustment parameter list.Record in this regulating parameter table be each performance parameter abnormal time, the power of injection machine is adjusted to the parameter that protection power needs to regulate.When judging that certain performance parameter occurs abnormal first; inquire about this regulating parameter table by controller and obtain corresponding regulating parameter; and automatically regulate this parameter to make the power adjusting of injection machine to protecting power, alleviate the damage that abnormal performance parameter causes injection machine.When certain performance parameter frequency of abnormity is more than 1 time, then injection machine is made to stop immediately, in order to avoid cause badly damaged to injection machine.Therefore, the embodiment of the present application achieves automatic diagnosis and the automatic protection of injection machine.
With reference to Fig. 3, the injection machine self-diagnosing method that the embodiment of the present application three provides, comprises the steps:
S1: the performance parameter of Real-time Obtaining injection machine; This performance parameter at least comprises moment of torsion J and the rotating speed n of motor;
S2: judge above-mentioned performance parameter whether in respective preset range, when at least one performance parameter is not in corresponding preset range, performs step S3, if above-mentioned performance parameter is all in respective preset range, then performs step S5;
S3: show the judged result to each performance parameter respectively, and the numerical value x that will transfinite adds 1;
S4: when x is greater than 1, controls injection machine and stops immediately; When x equals 1, then by the power adjusting of injection machine to protecting power, and show corresponding information, this self diagnosis terminates;
S5: show the judged result to each performance parameter respectively, the numerical value x that will transfinite sets to 0;
S6: calculate motor driven efficiency eta mif, motor driven efficiency eta mabnormal, then perform step S7, otherwise perform step S9;
Under normal circumstances, motor driven efficiency eta mwith the relation of the temperature t of motor as shown in Figure 5.Can by Fig. 5 with two bit array (η m[i], t [i]) form store, if Current Temperatures is t [4], by inquiring about this two-dimensional array (η m[i], t [i]) normal value that can obtain corresponding motor driven efficiency should be η mand then judge η [4], mwhether at [η m[4]-Δ η, η m[4]+Δ η] in, if so, then judge motor driven efficiency eta mnormally, otherwise judge η mabnormal.Wherein, the value of Δ η can set according to actual conditions.
S7: the ratio Kt judging the input current I of motor and moment of torsion J respectively whether in the first preset range, whether the rotating speed n of motor in the second preset range;
Wherein, judge that the concrete grammar of ratio Kt whether in the first preset range of the input current I of motor and moment of torsion J is as follows: under normal circumstances, the relation of the temperature t of Kt and motor as shown in Figure 6, same by Fig. 6 with two-dimensional array (Kt [i], t [i]) form store, if Current Temperatures is t [4], by inquiring about this two-dimensional array (Kt [i], t [i]) corresponding input current I can be obtained should be Kt [4] with the normal value of the ratio of moment of torsion J, and then can judge that whether Kt is at the first preset range [Kt [4]-Δ Kt, Kt [4]+Δ Kt] in.
As shown in Figure 7, under normal circumstances, the rotating speed n of motor increases with the increase of output frequency f, and the two is directly proportional, and the magnetic pole logarithm of relational expression to be n=60*f/p(p be motor, is generally 4).Therefore rated speed the n '=60*f/p of present motor can be calculated according to the output frequency f of motor, and then can determine that the second preset range is for [n '-Δ n, n '+Δ n].Therefore, judge that the rotating speed n of motor is whether in the second preset range, namely judge n whether in [n '-Δ n, n '+Δ n].
S8: the judged result of step display S7, and when Kt not in the first preset range or rotating speed n not in the second preset range time, control injection machine stop after the second Preset Time, this self diagnosis terminates;
The embodiment of the present application, except display " Kt is in the first preset range ", " n is not in the second preset range " etc. directly judged result, also can shows fault message further, facilitate staff directly to take counter-measure.As shown in A point in Fig. 6, during Kt>Kt [4]+Δ Kt, can show fault message " current transformer damage " further, staff directly checks current transformer after seeing this information, determines and fixes a breakdown; For another example, in Fig. 6 shown in B point, during Kt<Kt [4]-Δ Kt, fault message " motor temperature too high or demagnetization " can be shown further; And for example during n>n ' shown in Fig. 7 A point, fault message " parameters of hydraulic motor setting mistake " can be pointed out further, after staff sees this information, check immediately and reset the series of parameters of motor, motor is normally worked.
S9: judge that the ratio In of the input current I of motor and rotating speed n is whether in the 5th preset range, show this judged result, and when judging that In is not in the 5th preset range, control described injection machine and stop after the 4th Preset Time, this self diagnosis terminates.
Under normal circumstances, input current I increases with the increase of rotating speed n, and namely as shown in Fig. 8 (i.e. motor characteristics figure), I and n is directly proportional, and ratio is In0; If the ratio In of current I and n is not in the 5th preset range [In0-Δ, In0+ Δ], then show information " input current I is abnormal with the ratio of rotating speed n ", and control described injection machine and stop after the 4th Preset Time.
In addition, above-mentioned second Preset Time and the 4th Preset Time can be a cycle of operation etc. of one minute or injection machine.When fault is not serious, stop after Preset Time, the damage of stopping immediately to injection machine can be avoided.After injection machine stops, operations staff can safeguard injection machine further according to display result, thoroughly fixes a breakdown.
From said method step, the embodiment of the present application, when judging that performance parameter is all without exception, does not directly assert that injection machine is normal, but to motor driven efficiency eta m, Kt, n and motor characteristics In do to judge further, thus realize the fault pre-alarming of injection machine, the hidden danger that Timeliness coverage injection machine exists, before fault alarm is reported to the police, eliminate this potential faults in advance, reduce the infringement to injection machine.
See Fig. 4, the injection machine self-diagnosing method that the embodiment of the present application four provides, comprises the steps:
S1: the performance parameter of Real-time Obtaining injection machine; This performance parameter at least comprises moment of torsion J and the rotating speed n of motor, and the pressure P of pumping and flow Q;
S2: judge above-mentioned performance parameter whether in respective preset range, when at least one performance parameter is not in corresponding preset range, performs step S3, if above-mentioned performance parameter is all in respective preset range, then performs step S5;
S3: show the judged result to each performance parameter respectively, and the numerical value x that will transfinite adds 1;
S4: when x is greater than 1, controls injection machine and stops immediately; When x equals 1, then by the power adjusting of injection machine to protecting power, and show corresponding information, this self diagnosis terminates;
S5: show the judged result to each performance parameter respectively, the numerical value x that will transfinite sets to 0;
S6: calculate pumping transmission efficiency η bif, pumping transmission efficiency η babnormal, then perform step S7, otherwise perform step S9;
Judge η bwhether abnormal concrete grammar can refer in foregoing embodiments three judges motor driven efficiency eta mwhether abnormal, do not repeat them here.
S7: the ratio K judging pressure P and moment of torsion J respectively whether in the 3rd preset range, whether the ratio Qn of flow Q and rotating speed n in the 4th preset range;
Wherein, judge that the concrete grammar of ratio K whether in the 3rd preset range of pressure P and moment of torsion J is as follows: under normal circumstances, the relation of the temperature t of K and pumping as shown in Figure 9, by Fig. 9 with two bit array (K [i], t [i]) form store, if Current Temperatures is t [4], by inquiring about this two-dimensional array (K [i], t [i]) corresponding input current I can be obtained should be K [4] with the normal value of the ratio of moment of torsion J, and then K can be judged whether in the first preset range [K [4]-Δ K, K [4]+Δ K].
Same, judge that rate of change Qn that flow Q changes with the rotating speed n concrete grammar whether in the 4th preset range is as follows: under normal circumstances, as shown in Figure 10, Q and n meets relation Q=n0+Qn0*n; If current rate of change Qn is not in the 4th preset range [Qn0-Δ Qn, Qn0+ Δ Qn].
S8: the judged result of step display S7, and when K not in the 3rd preset range or described Qn not in the 4th preset range time, control injection machine stop after the 3rd Preset Time, this self diagnosis terminates;
The embodiment of the present application, except display " K is in the 3rd preset range ", " Qn is not in the 4th preset range " etc. directly judged result, also can shows fault message further, facilitate staff directly to take counter-measure.As shown in A point in Fig. 9, during K>K [4]+Δ K, can show fault message " pressure inductor damage " further, staff directly checks pressure inductor after seeing this information, determines and fixes a breakdown; For another example, in Fig. 9 shown in B point, during K<K [4]-Δ K, fault message " pumping damage " can be shown further; If Qn>Qn0+ Δ Qn(is namely as Suo Shi A point in Figure 10) or Qn<Qn0-Δ Qn(namely as Suo Shi B point in Figure 10), fault message " pumping wave pressure unstable " can be shown further.
S9: judging growth rate Pn that pressure P increases with rotating speed n whether in the 6th preset range, show this judged result, and when judging that Pn is not in the 6th preset range, control injection machine and stop after the 5th Preset Time, this self diagnosis terminating.
Under normal circumstances, the relation of pressure P and rotating speed n as shown in figure 11, along with the increase of n, the growth rate Pn first increases and then decreases that P increases with n.Figure 11 can be stored with the form of two-dimensional array (Pn [i], n [i]), if current rotating speed is n [3], inquiry two-dimensional array (Pn [i], n [i]) can obtain corresponding growth rate normal value Pn [3]; And then the growth rate Pn that calculates according to P and the n of Real-time Obtaining can be judged whether in the 6th preset range [Pn [3]-Δ Pn, Pn [3]+Δ Pn].If it is determined that Pn is not in [Pn [3]-Δ Pn, Pn [3]+Δ Pn], then show fault message " pumping is abnormal ", control injection machine simultaneously and stop after the 5th Preset Time.
In addition, above-mentioned 3rd Preset Time and the 5th Preset Time can be a cycle of operation etc. of one minute or injection machine.When fault is not serious, stop after Preset Time, the damage of stopping immediately to injection machine can be avoided.After injection machine stops, operations staff can safeguard injection machine further according to display result, thoroughly fixes a breakdown.
From said method step, the embodiment of the present application, when judging that performance parameter is all without exception, does not directly assert that injection machine is normal, but to pumping transmission efficiency η b, K, Qn and motor characteristics Pn do to judge further, thus realize the fault pre-alarming of injection machine, the hidden danger that Timeliness coverage injection machine exists, before fault alarm is reported to the police, eliminate this potential faults in advance, reduce the infringement to injection machine.
Apparent, the step S5 ~ S8 of the embodiment of the present application three can be added on the basis of the embodiment of the present application four, realize the self diagnosis to injection machine motor and pumping simultaneously.
In other embodiments of the application, for realizing the self diagnosis of the injection machine building blocks such as oil cylinder, mechanical moving element, driver, the performance parameter of stating that above-mentioned all embodiments obtain also comprises following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
Corresponding with said method embodiment, the embodiment of the present application five provides a kind of injection machine self-diagnosable system.As shown in figure 12, this system is made up of detection module 1, Parameter analysis module 2 and display module 3.
Wherein, Parameter analysis module 2 is connected with injection machine 0, detection module 1 and display module 3 respectively.The course of work of this system is as follows: at least one performance parameter of detection module 1 Real-time Obtaining injection machine; Parameter analysis module 2 judges performance parameter that detection module 1 obtains whether in respective preset range; Display module 3 is the judged result of display parameters analysis module 2 to each performance parameter respectively.
From said structure and the course of work, the embodiment of the present application is by the performance parameter of detection module 1 Real-time Obtaining injection machine, Parameter analysis module 2 judges above-mentioned performance parameter whether in preset range, and show judged result by display module 3, achieve injection machine fault self-diagnosis, staff by checking that display module 3 easily learns which performance parameter of current injection machine is abnormal, thus takes corresponding measure.With the existing mode detecting all parts of injection machine after alarm equipment alarm again, the embodiment of the present application greatly reduces the workload of staff, reduces the working experience requirement to staff, improves fault diagnosis efficiency.
With reference to Figure 13, the injection machine self-diagnosable system that the embodiment of the present application six provides, comprises detection module 1, Parameter analysis module 2, display module 3, transfinites counting module 41, first directive generation module 42, first Executive Module 43 and automatic protection module 44.
Wherein, Parameter analysis module 2 is connected with detection module 1 and display module 3 respectively, the counting module 41 that transfinites is connected with Parameter analysis module 2 and the first directive generation module 42 respectively, first Executive Module 43 is connected with the first directive generation module 42 and injection machine 0 respectively, and automatic protection module 44 is connected with the first directive generation module 42 and injection machine 0 respectively; First directive generation module 42 is also connected with display module 3.
The course of work of said system is as follows: at least one performance parameter of detection module 1 Real-time Obtaining injection machine; Parameter analysis module 2 judges performance parameter that detection module 1 obtains whether in respective preset range; When Parameter analysis module 2 judges to have at least a performance parameter not in corresponding preset range, the counting module 41 that the transfinites numerical value that will transfinite adds 1; First directive generation module 42 is according to the corresponding instruction of the numerical generation that transfinites: when the numerical value that transfinites is greater than 1, generate cutoff command immediately, when the numerical value that transfinites equals 1, generate automatically protection instruction and corresponding information (the performance parameter A as injection machine transfinite 1 time time, this information can be " parameter A transfinites 1 time "); When first Executive Module 43 receives the cutoff command immediately of the first directive generation module 42 generation, control injection machine 0 and stop immediately; Automatic protection module 44 according to described automatic protection instruction by the power adjusting of described injection machine to protecting power.The information that display module 3 difference display parameters analysis module 2 generates judged result and first directive generation module 42 of each performance parameter.
Concrete, the power adjusting of injection machine is different because of performance parameter to the concrete grammar of protection power.The corresponding table of performance parameter and power adjustment parameter can be prestored in automatic protection module 44 or other storage mediums; the parameter name of the performance parameter not in preset range is contained in automatic protection instruction; automatic protection module 44 obtains corresponding power adjustment parameter by the above-mentioned correspondence table of inquiry; and then regulate this power adjustment parameter, make the power of injection machine reach protection power.Such as; if the performance parameter exceeding preset range is the rotating speed of motor; output current then by adjusting driver makes the power of injection machine reach protection power; if the performance parameter exceeding preset range is the pressure of pumping, then the output voltage by adjusting driver makes the power of injection machine reach protection power.Therefore, the embodiment of the present application achieves injection machine automatic diagnosis and automatic protection.
With reference to Figure 14, the injection machine self-diagnosable system that the embodiment of the present application seven provides, comprises detection module 1, Parameter analysis module 2, display module 3, moyor analysis module 51, motor analysis module 52, second Executive Module 53, motor characteristics analysis module 54 and the 4th Executive Module 55.
Wherein, Parameter analysis module 2 is connected with detection module 1 and display module 3 respectively, and moyor analysis module 51 is connected with Parameter analysis module 2, motor analysis module 52 and motor characteristics analysis module 54 respectively; Second Executive Module 53 is connected with motor analysis module 52 and injection machine 0 respectively; 4th Executive Module 55 is connected with motor characteristics analysis module 54 and injection machine 0 respectively; Motor analysis module 52 is also connected with display module 3 respectively with motor characteristics analysis module 54.
The course of work of this system is as follows: the performance parameter of detection module 1 Real-time Obtaining injection machine, and this performance parameter at least comprises moment of torsion and the rotating speed of motor; Parameter analysis module 2 judges performance parameter that detection module 1 obtains whether in respective preset range; When Parameter analysis module 2 judges that above-mentioned performance parameter is all in preset range, moyor analysis module 51 calculates motor driven efficiency eta mand judge η mwhether abnormal.When moyor analysis module 51 judges η mtime abnormal, the ratio Kt that motor analysis module 52 judges further the input current of motor and moment of torsion whether in the first preset range, whether n in the second preset range, and when described Kt not in the first preset range or n not in the second preset range time, generate information and the second cutoff command; When second Executive Module 53 receives the second cutoff command, control injection machine 0 and stop after the second Preset Time.When moyor analysis module 51 judges η mtime without exception, motor characteristics analysis module 54 judges that further the ratio In of input current and rotating speed is whether in the 5th preset range, and when In is not in the 5th preset range, generation information and the 4th cutoff command; When 4th Executive Module 55 receives described 4th cutoff command, control injection machine 0 and stop after the 4th Preset Time; Display module 3 difference display parameters analysis module 2 is to the judged result of each performance parameter and the information of motor analysis module 52 and motor characteristics analysis module 54 generation.
In addition, above-mentioned second Preset Time and the 4th Preset Time can be a cycle of operation etc. of one minute or injection machine.When fault is not serious, stop after Preset Time, the damage of stopping immediately to injection machine can be avoided.After injection machine stops, operations staff can safeguard injection machine further according to display result, thoroughly fixes a breakdown.
The specific works mode of each part of said system can with reference to embodiment of the method three above.
From said method step, the embodiment of the present application is when Parameter analysis module judges that performance parameter is all without exception, directly do not assert that injection machine is normal, but by moyor analysis module, motor analysis module, the second Executive Module, motor characteristics analysis module and the 4th Executive Module to motor driven efficiency eta m, Kt, U 0do to judge further with motor characteristics In, thus realize the fault pre-alarming of injection machine, the hidden danger that Timeliness coverage injection machine exists, before fault alarm is reported to the police, eliminate this potential faults in advance, reduce the infringement to injection machine.
With reference to Figure 15, the injection machine self-diagnosable system that the embodiment of the present application eight provides, comprises detection module 1, Parameter analysis module 2, display module 3, pumping efficiency analysis module 61, pumping analysis module 62, the 3rd Executive Module 63, pumping specificity analysis module 64 and the 5th Executive Module 65.
Wherein, Parameter analysis module 2 is connected with detection module 1 and display module 3 respectively, and pumping efficiency analysis module 61 is connected with Parameter analysis module 2, pumping analysis module 62 and pumping specificity analysis module 64 respectively; 3rd Executive Module 63 is connected with pumping analysis module 62 and injection machine 0 respectively; 5th Executive Module 65 is connected with pumping specificity analysis module 64 and injection machine 0 respectively; Pumping analysis module 62 is also connected with display module 3 respectively with pumping specificity analysis module 64.
The course of work of this system is as follows: the performance parameter of detection module 1 Real-time Obtaining injection machine, and this performance parameter at least comprises moment of torsion and the rotating speed of motor, and the pressure of pumping and flow; Parameter analysis module 2 judges performance parameter that detection module 1 obtains whether in respective preset range; When Parameter analysis module 2 judges that above-mentioned performance parameter is all in preset range, moyor analysis module 51 calculates pumping transmission efficiency η band judge η bwhether abnormal.When pumping efficiency analysis module 61 judges η btime abnormal, the ratio K that pumping analysis module 62 judges further the pressure of pumping and moment of torsion whether in the 3rd preset range, flow with the rate of change Qn of rotation speed change whether in the 4th preset range, and when K not in the 3rd preset range or Qn not in the 4th preset range time, generate information and the 3rd cutoff command; When 3rd Executive Module 63 receives the 3rd cutoff command, control injection machine 0 and stop after the 3rd Preset Time.When pumping efficiency analysis module 61 judges η btime without exception, pumping specificity analysis module 64 judges further growth rate Pn that pressure increases with rotating speed whether in the 6th preset range, and when Pn is not in the 6th preset range, generation information and the 5th cutoff command; When 5th Executive Module 65 receives described 5th cutoff command, control injection machine 0 and stop after the 5th Preset Time; Display module 3 difference display parameters analysis module 2 is to the judged result of each performance parameter and the information of pumping analysis module 62 and the generation of pumping specificity analysis module 64.
In addition, above-mentioned 3rd Preset Time and the 5th Preset Time can be a cycle of operation etc. of one minute or injection machine.When fault is not serious, stop after Preset Time, the damage of stopping immediately to injection machine can be avoided.After injection machine stops, operations staff can safeguard injection machine further according to display result, thoroughly fixes a breakdown.
The working method of each part of said system can with reference to embodiment of the method four above.
From said structure and the course of work, the embodiment of the present application is when Parameter analysis module judges that performance parameter is all without exception, directly do not assert that injection machine is normal, but by pumping efficiency analysis module, pumping analysis module, the 3rd Executive Module, pumping specificity analysis module and the 5th Executive Module to pumping transmission efficiency η b, K, Qn and motor characteristics Pn do to judge further, thus realize the fault pre-alarming of injection machine, the hidden danger that Timeliness coverage injection machine exists, before fault alarm is reported to the police, eliminate this potential faults in advance, reduce the infringement to injection machine.
Apparent, the moyor analysis module 51 of the embodiment of the present application seven, motor analysis module 52, second Executive Module 53, motor characteristics analysis module 54 and the 4th Executive Module 55 can be added on the basis of the embodiment of the present application eight, thus realize the self diagnosis to injection machine motor and pumping simultaneously.
In the other system embodiment of the application, for realizing the self diagnosis of the injection machine building blocks such as oil cylinder, mechanical moving element, driver, the performance parameter that the detection module of above-mentioned all system embodiments obtains also comprises following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, described program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (24)

1. an injection machine self-diagnosable system, is characterized in that, comprising:
Detection module, is connected with injection machine, at least one performance parameter of injection machine described in Real-time Obtaining;
Parameter analysis module, is connected with described detection module, for judging described performance parameter whether in respective preset range;
Display module, with described Parameter analysis model calling, for showing the judged result to each performance parameter respectively;
Wherein, described performance parameter at least comprises moment of torsion and the rotating speed of motor;
Described system also comprises:
Moyor analysis module, with described Parameter analysis model calling, for when described Parameter analysis module judges that described performance parameter is all in preset range, calculates motor driven efficiency and judges that whether described motor driven efficiency is abnormal;
Motor analysis module, be connected with described moyor analysis module, for when described motor driven efficiency is abnormal, the ratio Kt judging the input current of described motor and described moment of torsion respectively whether in the first preset range, whether the rotating speed n of described motor in the second preset range, and when described Kt not in the first preset range and/or described n not in the second preset range time, generate information and the second cutoff command;
Second Executive Module, is connected with described motor analysis module and injection machine respectively, for when receiving described second cutoff command, controlling described injection machine and stopping after the second Preset Time.
2. system according to claim 1, is characterized in that, also comprises:
Transfinite counting module, and with described Parameter analysis model calling, for when performance parameter described at least one is not in corresponding preset range, the numerical value that will transfinite adds 1;
First directive generation module, is connected with described counting module, for when described in transfinite numerical value be greater than 1 time, generate cutoff command immediately, when the described numerical value that transfinites equals 1, generate automatically protect instruction;
First Executive Module, is connected with described first directive generation module and injection machine respectively, for when described in receiving immediately cutoff command time, control described injection machine and stop immediately;
Automatic protection module, is connected with described first directive generation module and injection machine respectively, for according to described automatic protection instruction by the power adjusting of described injection machine to protecting power.
3. system according to claim 1, is characterized in that, when described system comprises moyor analysis module, described system also comprises:
Motor characteristics analysis module, be connected with described moyor analysis module, for when described moyor analysis module judges that described motor driven efficiency is without exception, judge that the ratio In of described input current and rotating speed is whether in the 5th preset range, and when described In is not in the 5th preset range, generate information and the 4th cutoff command;
4th Executive Module, is connected with described motor characteristics analysis module and injection machine, for when receiving described 4th cutoff command, controlling described injection machine and stopping after the 4th Preset Time.
4. the system according to any one of claims 1 to 3, is characterized in that, described performance parameter also comprises at least one in following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
5. an injection machine self-diagnosable system, is characterized in that, comprising:
Detection module, is connected with injection machine, at least one performance parameter of injection machine described in Real-time Obtaining;
Parameter analysis module, is connected with described detection module, for judging described performance parameter whether in respective preset range;
Display module, with described Parameter analysis model calling, for showing the judged result to each performance parameter respectively;
Wherein, described performance parameter at least comprises moment of torsion and the rotating speed of motor, and the pressure of pumping and flow;
Described system also comprises:
Pumping efficiency analysis module, with described Parameter analysis model calling, for when described Parameter analysis module judges that described performance parameter is all in preset range, calculates pumping transmission efficiency and judges that whether described pumping transmission efficiency is abnormal;
Pumping analysis module, be connected with described pumping efficiency analysis module, for when described pumping transmission efficiency is abnormal, the ratio K judging described pressure and moment of torsion respectively whether in the 3rd preset range, described flow with the rate of change Qn of described rotation speed change whether in the 4th preset range, and when described K not in the 3rd preset range and/or described Qn not in the 4th preset range time, generate information and the 3rd cutoff command;
3rd Executive Module, is connected with described pumping analysis module and injection machine, for when receiving described 3rd cutoff command, controlling described injection machine and stopping after the 3rd Preset Time.
6. system according to claim 5, is characterized in that, also comprises:
Transfinite counting module, and with described Parameter analysis model calling, for when performance parameter described at least one is not in corresponding preset range, the numerical value that will transfinite adds 1;
First directive generation module, is connected with described counting module, for when described in transfinite numerical value be greater than 1 time, generate cutoff command immediately, when the described numerical value that transfinites equals 1, generate automatically protect instruction;
First Executive Module, is connected with described first directive generation module and injection machine respectively, for when described in receiving immediately cutoff command time, control described injection machine and stop immediately;
Automatic protection module, is connected with described first directive generation module and injection machine respectively, for according to described automatic protection instruction by the power adjusting of described injection machine to protecting power.
7. system according to claim 5, is characterized in that, when described system comprises pumping efficiency analysis module, described system also comprises:
Pumping specificity analysis module, be connected with described pumping efficiency analysis module, for when described pumping transmission efficiency is without exception, judge growth rate Pn that described pressure increases with rotating speed whether in the 6th preset range, and when described Pn is not in the 6th preset range, generate information and the 5th cutoff command;
5th Executive Module, with described pumping specificity analysis model calling, for when receiving described 5th cutoff command, controlling described injection machine and stopping after the 5th Preset Time.
8. the system according to any one of claim 5 ~ 7, is characterized in that, described performance parameter also comprises at least one in following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
9. an injection machine self-diagnosable system, is characterized in that, comprising:
Detection module, is connected with injection machine, at least one performance parameter of injection machine described in Real-time Obtaining;
Parameter analysis module, is connected with described detection module, for judging described performance parameter whether in respective preset range;
Display module, with described Parameter analysis model calling, for showing the judged result to each performance parameter respectively;
Wherein, described performance parameter at least comprises moment of torsion and the rotating speed of motor, and the pressure of pumping and flow;
Described system also comprises:
Moyor analysis module, with described Parameter analysis model calling, for when described Parameter analysis module judges that described performance parameter is all in preset range, calculates motor driven efficiency and judges that whether described motor driven efficiency is abnormal;
Motor analysis module, be connected with described moyor analysis module, for when described motor driven efficiency is abnormal, the ratio Kt judging the input current of described motor and described moment of torsion respectively whether in the first preset range, whether the rotating speed n of described motor in the second preset range, and when described Kt not in the first preset range and/or described n not in the second preset range time, generate information and the second cutoff command; Second Executive Module, is connected with described motor analysis module and injection machine respectively, for when receiving described second cutoff command, controlling described injection machine and stopping after the second Preset Time;
Pumping efficiency analysis module, with described Parameter analysis model calling, for when described Parameter analysis module judges that described performance parameter is all in preset range, calculates pumping transmission efficiency and judges that whether described pumping transmission efficiency is abnormal;
Pumping analysis module, be connected with described pumping efficiency analysis module, for when described pumping transmission efficiency is abnormal, the ratio K judging described pressure and moment of torsion respectively whether in the 3rd preset range, described flow with the rate of change Qn of described rotation speed change whether in the 4th preset range, and when described K not in the 3rd preset range and/or described Qn not in the 4th preset range time, generate information and the 3rd cutoff command;
3rd Executive Module, is connected with described pumping analysis module and injection machine, for when receiving described 3rd cutoff command, controlling described injection machine and stopping after the 3rd Preset Time.
10. system according to claim 9, is characterized in that, also comprises:
Transfinite counting module, and with described Parameter analysis model calling, for when performance parameter described at least one is not in corresponding preset range, the numerical value that will transfinite adds 1;
First directive generation module, is connected with described counting module, for when described in transfinite numerical value be greater than 1 time, generate cutoff command immediately, when the described numerical value that transfinites equals 1, generate automatically protect instruction;
First Executive Module, is connected with described first directive generation module and injection machine respectively, for when described in receiving immediately cutoff command time, control described injection machine and stop immediately;
Automatic protection module, is connected with described first directive generation module and injection machine respectively, for according to described automatic protection instruction by the power adjusting of described injection machine to protecting power.
11. systems according to claim 9, is characterized in that, when described system comprises moyor analysis module, described system also comprises:
Motor characteristics analysis module, be connected with described moyor analysis module, for when described moyor analysis module judges that described motor driven efficiency is without exception, judge that the ratio In of described input current and rotating speed is whether in the 5th preset range, and when described In is not in the 5th preset range, generate information and the 4th cutoff command;
4th Executive Module, is connected with described motor characteristics analysis module and injection machine, for when receiving described 4th cutoff command, controlling described injection machine and stopping after the 4th Preset Time;
When described system comprises pumping efficiency analysis module, described system also comprises:
Pumping specificity analysis module, be connected with described pumping efficiency analysis module, for when described pumping transmission efficiency is without exception, judge growth rate Pn that described pressure increases with rotating speed whether in the 6th preset range, and when described Pn is not in the 6th preset range, generate information and the 5th cutoff command;
5th Executive Module, with described pumping specificity analysis model calling, for when receiving described 5th cutoff command, controlling described injection machine and stopping after the 5th Preset Time.
12. systems according to any one of claim 9 ~ 11, it is characterized in that, described performance parameter also comprises at least one in following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
13. 1 kinds of injection machine self-diagnosing methods, is characterized in that, comprising:
At least one performance parameter of injection machine described in Real-time Obtaining;
Judge described performance parameter whether in respective preset range;
Show the judged result to each performance parameter respectively;
Wherein, described performance parameter at least comprises moment of torsion and the rotating speed of motor;
Described method also comprises:
Calculate motor driven efficiency and judge that whether described motor driven efficiency is abnormal;
When described motor driven efficiency is abnormal, the ratio Kt judging the input current of described motor and described moment of torsion respectively whether in the first preset range, whether the rotating speed n of described motor in the second preset range;
When described Kt not in the first preset range and/or described n not in the second preset range time, show corresponding information and control described injection machine and stop after the second Preset Time.
14. methods according to claim 13, is characterized in that, also comprise:
When performance parameter described at least one is not in corresponding preset range, the numerical value that transfinites adds 1;
If described in the numerical value that transfinites be greater than 1, then control described injection machine and stop immediately;
If described in the numerical value that transfinites equal 1, then the power adjusting of described injection machine is to protecting power, and shows corresponding information.
15. methods according to claim 14, is characterized in that, when judging that described motor driven efficiency is without exception, described method also comprises:
Judge that the ratio In of described input current and rotating speed is whether in the 5th preset range;
When described In is not in the 5th preset range, shows corresponding information and control described injection machine and stop after the 4th Preset Time.
16. methods according to any one of claim 13 ~ 15, it is characterized in that, described performance parameter also comprises at least one in following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
17. 1 kinds of injection machine self-diagnosing methods, is characterized in that, comprising:
At least one performance parameter of injection machine described in Real-time Obtaining;
Judge described performance parameter whether in respective preset range;
Show the judged result to each performance parameter respectively;
Described performance parameter at least comprises moment of torsion and the rotating speed of motor, and the pressure of pumping and flow;
Described method also comprises:
Calculate pumping transmission efficiency and judge that whether described pumping transmission efficiency is abnormal;
When described pumping transmission efficiency is abnormal, the ratio K judging described pressure and moment of torsion respectively whether in the 3rd preset range, described flow with the rate of change Qn of described rotation speed change whether in the 4th preset range;
When described K not in the 3rd preset range and/or described Qn not in the 4th preset range, show corresponding information and control described injection machine and stop after the 3rd Preset Time.
18. methods according to claim 17, is characterized in that, also comprise:
When performance parameter described at least one is not in corresponding preset range, the numerical value that transfinites adds 1;
If described in the numerical value that transfinites be greater than 1, then control described injection machine and stop immediately;
If described in the numerical value that transfinites equal 1, then the power adjusting of described injection machine is to protecting power, and shows corresponding information.
19. methods according to claim 17, is characterized in that, when judging that described pumping transmission efficiency is without exception, described method also comprises:
Judge growth rate Pn that described pressure increases with rotating speed whether in the 6th preset range;
When described Pn is not in the 6th preset range, shows corresponding information and control described injection machine and stop after the 5th Preset Time.
20. methods according to any one of claim 17 ~ 19, it is characterized in that, described performance parameter also comprises at least one in following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
21. 1 kinds of injection machine self-diagnosing methods, is characterized in that, comprising:
At least one performance parameter of injection machine described in Real-time Obtaining;
Judge described performance parameter whether in respective preset range;
Show the judged result to each performance parameter respectively;
Described performance parameter at least comprises moment of torsion and the rotating speed of motor, and the pressure of pumping and flow;
Described method also comprises:
Calculate motor driven efficiency and judge that whether described motor driven efficiency is abnormal;
When described motor driven efficiency is abnormal, the ratio Kt judging the input current of described motor and described moment of torsion respectively whether in the first preset range, whether the rotating speed n of described motor in the second preset range;
When described Kt not in the first preset range and/or described n not in the second preset range time, show corresponding information and control described injection machine and stop after the second Preset Time;
Calculate pumping transmission efficiency and judge that whether described pumping transmission efficiency is abnormal;
When described pumping transmission efficiency is abnormal, the ratio K judging described pressure and moment of torsion respectively whether in the 3rd preset range, described flow with the rate of change Qn of described rotation speed change whether in the 4th preset range;
When described K not in the 3rd preset range and/or described Qn not in the 4th preset range, show corresponding information and control described injection machine and stop after the 3rd Preset Time.
22. methods according to claim 21, is characterized in that, also comprise:
When performance parameter described at least one is not in corresponding preset range, the numerical value that transfinites adds 1;
If described in the numerical value that transfinites be greater than 1, then control described injection machine and stop immediately;
If described in the numerical value that transfinites equal 1, then the power adjusting of described injection machine is to protecting power, and shows corresponding information.
23. methods according to claim 21, is characterized in that,
When judging that described motor driven efficiency is without exception, described method also comprises:
Judge that the ratio In of described input current and rotating speed is whether in the 5th preset range;
When described In is not in the 5th preset range, shows corresponding information and control described injection machine and stop after the 4th Preset Time;
When judging that described pumping transmission efficiency is without exception, described method also comprises:
Judge growth rate Pn that described pressure increases with rotating speed whether in the 6th preset range;
When described Pn is not in the 6th preset range, shows corresponding information and control described injection machine and stop after the 5th Preset Time.
24. methods according to any one of claim 21 ~ 23, it is characterized in that, described performance parameter also comprises at least one in following parameter: the sectional area of oil cylinder, the position of mechanical moving element and speed, the electric current of driver, voltage and transmission efficiency.
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