CN109521754A - A kind of test signal creating method and device - Google Patents
A kind of test signal creating method and device Download PDFInfo
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- CN109521754A CN109521754A CN201811635997.2A CN201811635997A CN109521754A CN 109521754 A CN109521754 A CN 109521754A CN 201811635997 A CN201811635997 A CN 201811635997A CN 109521754 A CN109521754 A CN 109521754A
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- 238000012360 testing method Methods 0.000 title claims abstract description 94
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
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Abstract
This application discloses a kind of test signal creating method and devices, comprising: according to initial test signal create-rule is preset, generates initial test signal；The initial test signal is input in production equipment model together with the control signal that controller exports, obtains response signal；According to the response signal, the initial test signal is adjusted, until obtained response signal meets default response signal condition.Since production equipment model can react production equipment model running situation with the response signal that control signal is responded to initial test signal, the application carries out in test process to production equipment model, initial test signal can be adjusted in real time according to response signal, until obtained response signal meets default response signal condition, so as to obtain meeting the test signal of production equipment model running situation, the accuracy of test signal is improved, and then improves accurate the determining of the control parameter adjusting result of PID controller.
Description
Technical field
The present invention relates to automatic control technology fields, and in particular to a kind of test signal creating method and device.
Background technique
With stepping up for industrial automation level, with DCS (Distributed Control System, distribution
Control system) and PLC (Programmable Logic Controller, programmable logic controller (PLC)) be core it is extensive
Distributed Control System has become industrial indispensability, in control system operational process, PID (proportion-
Integral-differential, proportional-integral-differential) controller become production equipment operation basis.
It is raw with the aging of production equipment, the transformation of technology or the adjustment of production technology in production equipment operational process
The operation conditions for producing equipment is changed, the control being input in production equipment for causing PID controller to set in initial operation stage
Parameter processed is no longer desirable for the operation conditions of production equipment, and therefore, it is necessary to the control parameters to PID controller to adjust.One
The very effective setting method of kind is internal model control Tuning, and the premise of internal model control Tuning is to run to join to production equipment
Several determination, to be adjusted according to the production equipment operating parameter determined to the control parameter of PID controller.
To the determination process of production equipment operating parameter, need to continually enter test signal to production equipment model, and obtain
The response signal of production equipment model is taken, to obtain production equipment operating parameter according to test signal and response signal.And
The accuracy of test signal directly affects the accuracy of production equipment operating parameter, and then affects the control of PID controller
The accurate of parameter tuning result is determined, and is based on this, how to be provided a kind of test signal creating method, improve the control of PID controller
The accurate of parameter tuning result is determined, and a technical problem to be solved urgently is become.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of test signal creating method and device, test signal can be improved
Accuracy, and then improve PID controller control parameter adjusting result it is accurate calmly.
A kind of test signal creating method, comprising:
According to initial test signal create-rule is preset, initial test signal is generated；
The initial test signal is input in production equipment model together with the control signal that controller exports, is obtained
Response signal；
According to the response signal, the initial test signal is adjusted, until obtained response signal meets in advance
If response signal condition.
Preferably, the foundation presets initial test signal create-rule, and the process for generating initial test signal includes:
According to initial test signal create-rule is preset, signal type and characteristics of signals to initial test signal are carried out
Setting generates initial test signal.
Preferably, the characteristics of signals includes at least: signal starting point, signal amplitude, signal actuation duration, signal stabilization
Time and signal testing time.
Preferably, described that the initial test signal is adjusted according to the response signal, until obtained response
The process that signal meets default response signal condition includes:
According to the signal value of the response signal and the deviation of response signal standard value, to the letter of the initial test signal
Number amplitude is adjusted, until the deviation of obtained response signal and response signal standard value meets default response signal deviation item
Part.
Preferably, described according to the signal value of the response signal and the deviation of response signal standard value, to described initial
The signal amplitude of test signal is adjusted, until the deviation of obtained response signal and response signal standard value meets default ring
The process of induction signal deflection condition includes:
If the signal value of the response signal got and the maximum deflection difference value of response signal standard value are less than default
Lower limit of variation value then increases the signal amplitude of the initial test signal；If the signal value of the response signal and response are believed
The maximum deflection difference value of number standard value is greater than predetermined deviation upper limit value, then reduces the signal amplitude of the initial test signal；Until
The deviation of obtained response signal and response signal standard value is between predetermined deviation lower limit value and predetermined deviation upper limit value.
A kind of test signal generating apparatus, comprising:
Initial test signal generation module, for generating initial testing letter according to initial test signal create-rule is preset
Number；
Response signal obtains module, for inputting the initial test signal together with the control signal that controller exports
Into production equipment model, response signal is obtained；
Initial test signal adjusts module, for being adjusted to the initial test signal according to the response signal,
Until obtained response signal meets default response signal condition.
Preferably, the initial test signal generation module includes:
Initial test signal generates submodule, for believing initial testing according to initial test signal create-rule is preset
Number signal type and characteristics of signals be configured, generate initial test signal.
Preferably, the initial test signal adjustment module includes:
Initial test signal adjusting submodule, for the signal value and response signal standard value according to the response signal
Deviation is adjusted the signal amplitude of the initial test signal, until obtained response signal and response signal standard value
Deviation meet default response signal deflection condition.
Preferably, the initial test signal adjusting submodule is specifically used for: if the response signal got
Signal value and the maximum deflection difference value of response signal standard value are less than predetermined deviation lower limit value, then increase the initial test signal
Signal amplitude；If the signal value of the response signal and the maximum deflection difference value of response signal standard value are greater than the predetermined deviation upper limit
Value, then reduce the signal amplitude of the initial test signal；Until the deviation of obtained response signal and response signal standard value
It is between predetermined deviation lower limit value and predetermined deviation upper limit value.
Based on the above-mentioned technical proposal, the embodiment of the invention discloses a kind of test signal creating method and devices, comprising: according to
According to default initial test signal create-rule, initial test signal is generated；The initial test signal and controller are exported
Control signal is input to together in production equipment model, obtains response signal；According to the response signal, to the initial testing
Signal is adjusted, until obtained response signal meets default response signal condition.Since production equipment model is surveyed to initial
Trial signal can react production equipment model running situation with the response signal that control signal is responded, and the present invention is implemented
Example can adjust initial test signal in real time according to response signal in test process to production equipment model,
Until obtained response signal meets default response signal condition, so as to obtain meeting production equipment model running situation
Signal is tested, the accuracy of test signal is improved, and then the control parameter for improving PID controller adjusts the accurate of result
It is fixed.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart for testing signal creating method provided in an embodiment of the present invention；
Fig. 2 is a kind of step signal waveform diagram provided in an embodiment of the present invention；
Fig. 3 is the flow chart of another test signal creating method provided in an embodiment of the present invention；
Fig. 4 is the deviation schematic diagram between a kind of response signal and response signal standard value provided in an embodiment of the present invention；
Fig. 5 is a kind of electrical block diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of structural block diagram for testing signal generating apparatus provided in an embodiment of the present invention；
Fig. 7 is a kind of hardware block diagram for testing signal generating apparatus provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Due in production equipment operational process, with the tune of the aging of production equipment, the transformation of technology or production technology
Whole, the operation conditions of production equipment is changed, and PID controller is caused to be input in production equipment what initial operation stage was set
Control parameter be no longer desirable for the operation conditions of production equipment, therefore, it is necessary to the control parameter to PID controller carry out it is whole
It is fixed.The premise adjusted to the control parameter of PID controller is the determination to production equipment operating parameter, thus according to determination
Good production equipment operating parameter adjusts the control parameter of PID controller.
The prior art needs to continually enter production equipment model test letter to the determination process of production equipment operating parameter
Number, and the response signal of production equipment model is obtained, to obtain production equipment operation according to test signal and response signal
Parameter.And the accuracy for testing signal directly affects the accuracy of production equipment operating parameter, and then affects PID controller
Control parameter adjusting result it is accurate calmly.Such as when the signal value estimation for testing signal is larger, such as production equipment
In the case that circuit steady state time and noise variance in model have serious estimation mistake, it will lead to test signal and be related to paying no attention to
Think；When circuit exists compared with large disturbances, the test signal amplitude being arranged when initial and actuation duration are insufficient, then can not pass through test
Signal obtains accurate production equipment operating parameter；During the test, if circuit very large disturbances occurs and circuit is caused to occur
Abnormal conditions then need the input of timely interrupt test signal at this time.
It based on this, is carried out in test process to production equipment model, the application can be in real time according to production equipment model
Operation conditions adjusts test signal in real time, improves the accuracy of test signal, and then improve the control of PID controller
The accurate of parameter tuning result is determined.
Fig. 1 shows a kind of flow chart for testing signal creating method, the test signal generation side in the embodiment of the present invention
Method is applied to closed-loop control system, specifically, referring to Fig.1, the method may include:
Step S100, according to initial test signal create-rule is preset, initial test signal is generated；
It should be noted that can be surveyed according to default initial test signal create-rule to initial in the embodiment of the present invention
The signal type and characteristics of signals of trial signal are configured, and generate initial test signal.
Optionally, it can choose signal type of the step signal as initial test signal in the embodiment of the present invention, because
For the linear production equipment model of a n rank, it is desirable that test signal is the Persistent Excitation signal of 2n dimension, and frequency domain is in section
At least there is the signal spectrum of the non-zero on 2n Frequency point in (- π, π), step signal meets the property, also, step signal
Waveform is simpler, and generation process is simpler, does not need very complicated hardware device, and does not need test signal generating apparatus
Frequent movement saves the service life of test signal generating apparatus, guarantees the safety of entire production process.
The embodiment of the present invention can also be using other kinds of signal as initial test signal, such as pseudo-random binary
Sequence signal etc., the embodiment of the present invention are simultaneously not specifically limited.
The characteristics of signals being arranged in the embodiment of the present invention includes at least: signal starting point, signal amplitude, signal excitation
Time, signal stabilization time and signal testing time.
Shown in step signal waveform diagram as shown in connection with fig. 2, signal starting point is to test the zero point of signal fluctuation, the zero point
Time can be scheduled on the time point after production equipment model output signal is stablized, the i.e. value of the response signal of production equipment model
When with the deviation of response signal standard value continuously less than predetermined deviation lower limit value, start the excitation for testing signal.Specifically, zero
The point time can be scheduled on after the circuit steady state time of production equipment model.
It should be noted that the response signal of production equipment model is only defeated to controller before load test signal
What the control signal entered was responded, after load test signal, the response signal is production device model to first
Begin to test signal and controls the response signal that signal is responded.Response signal needed for the zero point of initial test signal is arranged is
The control signal of controller input is responded.
Signal amplitude is to test signal in one cycle, the maximum value instantaneously occurred.Test the choosing of signal amplitude
Select the considerations of should taking into account the following aspects: to guarantee that noise is relatively high, amplitude should be arranged big as far as possible；To guarantee
Serious disturbance is not generated to production equipment model, amplitude should be arranged small as far as possible；To guarantee production equipment model process
Operating condition is in the range of linearity, with guarantee the characteristic of production equipment model be it is linear, then need the linearity for understanding live circuit in advance.
Under normal circumstances, test signal amplitude doubles, and the error of obtained production equipment operating parameter can halve.
Based on considerations above, the calculation formula of signal amplitude is provided in the embodiment of the present invention are as follows:
Signal amplitude=(the variance * 5 of deviation e)/model gain.
Wherein, deviation e is the value of response signal and the deviation of response signal standard value；Model gain is production device model
Gain.
Optionally, due to that can be corrected again after test signal puts into operation, thus it can choose and calculate when initial designs
To the half of amplitude be configured.
The signal actuation duration be test signal once rises once decline between time.It should be noted that excitation
Time is typically chosen 1/4 to 1 times of circuit steady state time.In the premise for not needing to understand in depth production equipment scene loop characteristic
Under, circuit steady state time can be determined according to production equipment loop-type, for example the circuit steady state time of flow circuit is 5-15
Minute, the circuit steady state time in liquid level circuit is 10-20 minutes, and the circuit steady state time of temperature loop is 40-120 minutes etc.,
Specifically, the actuation duration can fetch the 1/2 of road steady state time, the embodiment of the present invention is not specifically limited.
Certain time recovery controller is needed to run shape after the completion of test signal excitation signal stabilization time
Then state just carries out second of test signal excitation, this time interval is to stablize the time, can be set to the 1- of actuation duration
2 times, the embodiment of the present invention is not specifically limited.
The signal testing time is the time overall length from load test signal to end.Since the actuation duration of test signal gets over
Long, obtained production equipment operating parameter error is smaller, but the time is longer, and equipment consume is bigger, also bigger to the interference at scene.
The general signal testing time at least chooses 3-5 times of Energizing cycle, i.e. 3-5 Energizing cycle can stop motivating, wherein swashs
The summation that the period is signal actuation duration and signal stabilization time is encouraged, optionally, it is steady that the signal testing time can also choose signal
10 times to fix time, the embodiment of the present invention is not specifically limited.
Step S110, the initial test signal is input to production equipment mould together with the control signal that controller exports
In type, response signal is obtained；
In test process, controller is maintained at closed loop states, and initial test signal is superimposed upon control in the embodiment of the present invention
On the control signal of device output processed, it is input in production equipment model together.
The control signal of controller output is the signal that control function is executed to production equipment model, and controller believes control
It number is input in production equipment model, control function is executed to production equipment model.
The response signal is the response signal for producing device model and being responded to initial test signal and control signal.
Step S120, according to the response signal, the initial test signal is adjusted, until obtained response letter
Number meet default response signal condition.
Since the response signal that production equipment model responds initial test signal with control signal can be anti-
Production equipment model running situation is answered, the embodiment of the present invention carries out in test process to production equipment model, can be according to sound
Induction signal adjusts initial test signal in real time, until obtained response signal meets default response signal condition, realization
The on-line amending of test signal so as to obtain meeting the test signal of production equipment model running situation improves survey
The accuracy of trial signal, and then improve accurate the determining of the control parameter adjusting result of PID controller.Also, the present invention is implemented
The technical solution of the disclosed test signal on-line amending of example is able to ascend the efficiency of control system test process.
Fig. 3 shows the flow chart of another test signal creating method disclosed by the embodiments of the present invention, and the present invention is implemented
Test signal creating method in example is applied to closed-loop control system, specifically, referring to Fig. 3, the method may include:
Step S200, according to initial test signal create-rule is preset, initial test signal is generated；
Step S210, the initial test signal is input to production equipment mould together with the control signal that controller exports
In type, response signal is obtained；
Step S220, the deviation according to the signal value of the response signal and response signal standard value, to the initial survey
The signal amplitude of trial signal is adjusted, and the deviation of the response signal until obtaining and response signal standard value meets default response
Deviation of signal condition.
Response signal standard value can be by those skilled in the art according to production equipment model characteristics or response signal
Signal type is arranged, and the embodiment of the present invention is not specifically limited.
Due to being superimposed test signal in the control basis of signals that controller exports, the input of signal is tested, will lead to
There are certain deviations between the response signal and response signal standard value of production equipment model, referring to figure 4. shown in respond
Deviation schematic diagram between signal and response signal standard value, due to response signal signal value and response signal standard value it is inclined
Difference can react production equipment model running situation, signal value and the response signal standard value according to the response signal it is inclined
Difference is adjusted the signal amplitude of the initial test signal, until obtained response signal and response signal standard value
Deviation meets default response signal deflection condition, so as to obtain meeting the test signal of production equipment model running situation,
The accuracy of test signal is improved, and then improves accurate the determining of the control parameter adjusting result of PID controller.
In addition, it is necessary to which explanation, test signal creating method disclosed by the embodiments of the present invention are applied to closed-loop control system
System, can be according to the signal value of the response signal and the deviation of response signal standard value, to the letter of the initial test signal
Number amplitude carries out feedback adjustment, and controller can be made to keep not influencing system in operation with closed ring state during the test
The stability of operation.During the test or at the end of test, as long as stopping the excitation of test signal, control system will be automatic
Run to normal production status.
Specifically, if the signal value of the response signal got and the maximum deflection difference value of response signal standard value are small
In predetermined deviation lower limit value, then increase the signal amplitude of the initial test signal；If the signal value of the response signal with
The maximum deflection difference value of response signal standard value is greater than predetermined deviation upper limit value, then reduces the signal width of the initial test signal
Value；Until the deviation of obtained response signal and response signal standard value is in predetermined deviation lower limit value and predetermined deviation upper limit value
Between.
It should be noted that can come according to preset deviation and the proportionate relationship of signal amplitude in the embodiment of the present invention
Signal amplitude is adjusted, the proportionate relationship between deviation and signal amplitude can be by those skilled in the art according to production
Device model is preset, and the embodiment of the present invention is simultaneously not specifically limited.
In the following, with above-mentioned technical proposal disclosed in a specific example the present invention will be described in detail embodiment:
Test signal creating method disclosed by the embodiments of the present invention is directed to circuit structure as shown in Figure 5, implements
Journey is as follows:
1, according to initial test signal create-rule is preset, initial test signal is generated；
3, the signal value of the response signal and the deviation e, e=of response signal standard value are obtained | PV-SP |, PV is response
The signal value of signal, SP are response signal standard value；
Before load test signal, the response signal of production equipment model be only to controller input control signal into
Row response obtains.
4, the upper limit of deviation e is set as e_l, lower limit e_h；
5, the size of deviation e is observed in the output end of production equipment model；
6, when deviation e is continuously less than lower limit e_l, start to test signal, the initial test signal and controller is defeated
Control signal out is input to together in production equipment model, obtains response signal；
It should be noted that response signal herein is that production device model is surveyed to initial after load test signal
The response signal that trial signal and control signal are responded.
7, after the actuation duration, if the maximum value of deviation e is less than lower limit e_l, increase the initial testing letter
Number amplitude；
8, in test process, if the maximum value of deviation e is greater than upper limit e_h, stop the excitation for testing signal, and subtract
Few amplitude, then returns to step 5.
Network transmission performance test device provided in an embodiment of the present invention is introduced below, network described below passes
Defeated performance testing device can correspond to each other reference with network transmission performance test method above.
Fig. 6 is the structural block diagram of test signal generating apparatus provided in an embodiment of the present invention, referring to Fig. 6, the test signal
Generating means may include:
Initial test signal generation module 100, for generating initial testing according to initial test signal create-rule is preset
Signal；
Response signal obtain module 110, for by the initial test signal together with the control signal that controller exports
It is input in production equipment model, obtains response signal；
Initial test signal adjusts module 120, for being adjusted to the initial test signal according to the response signal
It is whole, until obtained response signal meets default response signal condition.
The initial test signal generation module includes:
Initial test signal generates submodule, for believing initial testing according to initial test signal create-rule is preset
Number signal type and characteristics of signals be configured, generate initial test signal.
The initial test signal adjusts module
Initial test signal adjusting submodule, for the signal value and response signal standard value according to the response signal
Deviation is adjusted the signal amplitude of the initial test signal, until obtained response signal and response signal standard value
Deviation meet default response signal deflection condition.
The initial test signal adjusting submodule is specifically used for: if the signal value of the response signal got with
The maximum deflection difference value of response signal standard value is less than predetermined deviation lower limit value, then increases the signal width of the initial test signal
Value；If the signal value of the response signal and the maximum deflection difference value of response signal standard value are greater than predetermined deviation upper limit value,
Reduce the signal amplitude of the initial test signal；Until the deviation of obtained response signal and response signal standard value be in it is pre-
If between lower limit of variation value and predetermined deviation upper limit value.
Optionally, test signal generating apparatus can be hardware device, and above-described module can be set to be believed in test
Functional module in number generating means.Fig. 7 shows the hardware block diagram of test signal generating apparatus, referring to Fig. 7, test letter
Number generating means may include: processor 1, communication interface 2, memory 3 and communication bus 4；Wherein processor 1, communication interface
2, memory 3 completes mutual communication by communication bus 4；Optionally, communication interface 2 can be the interface of communication module,
Such as the interface of gsm module；
Processor 1, for executing program；Memory 3, for storing program；Program may include program code, the journey
Sequence code includes computer operation instruction；
Processor 1 may be a central processor CPU or specific integrated circuit ASIC
(Application Specific Integrated Circuit), or be arranged to implement of the invention real
Apply one or more integrated circuits of example；Memory 3 may include high speed RAM memory, it is also possible to further include non-volatile deposit
Reservoir (non-volatile memory), for example, at least a magnetic disk storage.
Wherein, program can be specifically used for:
According to initial test signal create-rule is preset, initial test signal is generated；
The initial test signal is input in production equipment model together with the control signal that controller exports, is obtained
Response signal；
According to the response signal, the initial test signal is adjusted, until obtained response signal meets in advance
If response signal condition.
In summary:
The embodiment of the invention discloses a kind of test signal creating method and devices, comprising: believes according to initial testing is preset
Number create-rule generates initial test signal；The initial test signal is inputted together with the control signal that controller exports
Into production equipment model, response signal is obtained；According to the response signal, the initial test signal is adjusted, directly
Meet default response signal condition to obtained response signal.Since production equipment model is to initial test signal and control signal
The response signal responded can react production equipment model running situation, and the embodiment of the present invention is to production equipment mould
Type can be adjusted in real time according to response signal to initial test signal in test process, until obtained response letter
Number meet default response signal condition improves so as to obtain meeting the test signal of production equipment model running situation
The accuracy of signal is tested, and then improves accurate the determining of the control parameter adjusting result of PID controller.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of test signal creating method characterized by comprising
According to initial test signal create-rule is preset, initial test signal is generated；
The initial test signal is input in production equipment model together with the control signal that controller exports, is responded
Signal；
According to the response signal, the initial test signal is adjusted, until obtained response signal meets default ring
Induction signal condition.
2. the method according to claim 1, wherein the foundation presets initial test signal create-rule, life
Include: at the process of initial test signal
According to initial test signal create-rule is preset, the signal type and characteristics of signals of initial test signal are set
It sets, generates initial test signal.
3. according to the method described in claim 2, it is characterized in that, the characteristics of signals includes at least: signal starting point, signal
Amplitude, signal actuation duration, signal stabilization time and signal testing time.
4. method according to claim 1 to 3, which is characterized in that it is described according to the response signal, to institute
It states initial test signal to be adjusted, until the process that obtained response signal meets default response signal condition includes:
According to the signal value of the response signal and the deviation of response signal standard value, to the signal width of the initial test signal
Value is adjusted, and the deviation of the response signal until obtaining and response signal standard value meets default response signal deflection condition.
5. method according to claim 1 to 3, which is characterized in that the signal according to the response signal
The deviation of value and response signal standard value, is adjusted the signal amplitude of the initial test signal, until obtained response
The process that the deviation of signal and response signal standard value meets default response signal deflection condition includes:
If the signal value of the response signal got and the maximum deflection difference value of response signal standard value are less than predetermined deviation
Lower limit value then increases the signal amplitude of the initial test signal；If the signal value of the response signal and response signal mark
The maximum deflection difference value of quasi- value is greater than predetermined deviation upper limit value, then reduces the signal amplitude of the initial test signal；Until obtaining
Response signal and the deviation of response signal standard value be between predetermined deviation lower limit value and predetermined deviation upper limit value.
6. a kind of test signal generating apparatus characterized by comprising
Initial test signal generation module, for generating initial test signal according to initial test signal create-rule is preset；
Response signal obtains module, for the initial test signal to be input to life together with the control signal that controller exports
It produces in device model, obtains response signal；
Initial test signal adjusts module, for being adjusted to the initial test signal according to the response signal, until
Obtained response signal meets default response signal condition.
7. device according to claim 6, which is characterized in that the initial test signal generation module includes:
Initial test signal generates submodule, initial test signal create-rule is preset for foundation, to initial test signal
Signal type and characteristics of signals are configured, and generate initial test signal.
8. according to device described in claim 6-7 any one, which is characterized in that the initial test signal adjusts module packet
It includes:
Initial test signal adjusting submodule, for the inclined of signal value and the response signal standard value according to the response signal
Difference is adjusted the signal amplitude of the initial test signal, until obtained response signal and response signal standard value
Deviation meets default response signal deflection condition.
9. according to device described in claim 6-7 any one, which is characterized in that the initial test signal adjusting submodule
It is specifically used for: is preset if the signal value of the response signal got and the maximum deflection difference value of response signal standard value are less than
Lower limit of variation value then increases the signal amplitude of the initial test signal；If the signal value of the response signal and response are believed
The maximum deflection difference value of number standard value is greater than predetermined deviation upper limit value, then reduces the signal amplitude of the initial test signal；Until
The deviation of obtained response signal and response signal standard value is between predetermined deviation lower limit value and predetermined deviation upper limit value.
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