CN103076166A - Method and device for testing durability of air door of automobile air conditioner - Google Patents
Method and device for testing durability of air door of automobile air conditioner Download PDFInfo
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- CN103076166A CN103076166A CN201310004465XA CN201310004465A CN103076166A CN 103076166 A CN103076166 A CN 103076166A CN 201310004465X A CN201310004465X A CN 201310004465XA CN 201310004465 A CN201310004465 A CN 201310004465A CN 103076166 A CN103076166 A CN 103076166A
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Abstract
The invention discloses a method and a device for testing the durability of an air door of an automobile air conditioner. The air door of the automobile air conditioner is driven by using a plurality of motors. The method comprises the following steps of: setting a first feedback voltage, a second feedback voltage, first stopping time, second stopping time and a target cycle index; instructing each motor to run and making the feedback voltage of each motor get close to the first feedback voltage; when the feedback voltage of each motor reaches the first feedback voltage, instructing each motor to stop running within the first stopping time; instructing each motor to run and making the feedback voltage of each motor get close to the second feedback voltage; when the feedback voltage of each motor reaches the second feedback voltage, instructing each motor to stop running within the second stopping time; and adding one cycle index, and if the cycle index is smaller than a target cycle index, repeating cycles, otherwise, ending the testing. According to the method and the device, testing of the durability of the air door of the automobile air conditioner and electric stopping of the motors are realized, stopping positions and time can be set, and testing is more reliable and safer.
Description
Technical field
The present invention relates to the endurance quality test, relate in particular to a kind of method and apparatus of automobile air-conditioning throttle endurance quality test.
Background technology
At present, automobile air-conditioning throttle is driven by a plurality of motor, that the durability test device of air door uses is the Programmable Logic Controller PLC of old-fashioned Omron, its off-position mode is by after two extreme positions of air door arrival, the rocking arm of motor is blocked in the mechanical screens of block, thereby makes motor rotation blockage produce locked rotor current, after PLC detects locked rotor current, the control output end mouth is realized off-position.This device can only stop by force by mechanical screens, and the precision of control is lower like this, and ceaselessly stall is large to the damage comparison of motor, and can't stop in the air door centre position according to requirement of experiment, more can't set accurate stand-by time.
In the face of the growing needs of car load factory, test more and more strictlyer, for example experiment needs to simulate that the passenger regulates the fan blower gear in the actual situation of driving; adjust indoor temperature; regulate air conditioning mode and regulating frequency, and according to the fault that may occur in the real vehicle, in time protect etc. situation.Original like this air door endurance performance testing method and device just can't satisfy higher requirement.
Therefore, those skilled in the art is devoted to develop a kind of car air-conditioner air door endurance performance testing method and installs to adapt to the requirement of Modern Vehicle air conditioner damper endurance quality test.
Summary of the invention
In view of the defects of prior art, technical matters to be solved by this invention provides a kind of car air-conditioner air door endurance performance testing method device that can accurately control.
For achieving the above object, the invention provides a kind of method of automobile air-conditioning throttle endurance quality test, described automobile air-conditioning throttle be is characterized in that by a plurality of motor-driven, comprising:
Each described motor rotation of step 102 instruction and make described first feedback voltage of feedback voltage convergence of each described motor, when the described feedback voltage of described motor arrived described the first feedback voltage, the described motor of instruction was out of service;
When step 103 all arrives described the first feedback voltage when the described feedback voltage of each described motor, begin the timing of described the first off-position time, and each described motor of instruction keeps out of service at described the first off-position in the time;
The timing of described the first off-position time of step 104 finishes, each described motor rotation of instruction and make described second feedback voltage of described feedback voltage convergence of each described motor, when the described feedback voltage of described motor arrived described the second feedback voltage, the described motor of instruction was out of service;
When step 105 all arrives described the second feedback voltage when the described feedback voltage of each described motor, begin the timing of described the second off-position time, and each described motor of instruction keeps out of service at described the second off-position in the time;
The timing of described the second off-position time of step 106 finishes, and makes the increase of described cycle index once, and more described cycle index and described target circulation number of times are if described cycle index then enters step 102 less than described target circulation number of times; If described cycle index is not less than described cycle index, then test finishes.
Further, each described motor all connects first relay and second relay, described motor forward when described the first relay is connected, described motor reversal when described the second relay is connected, described motor was out of service when described first and second relay all disconnected.
Further, the described feedback voltage of described motor is by analog quantity spread module input Programmable Logic Controller, described Programmable Logic Controller compares described feedback voltage and described first feedback voltage of described motor, and whether described Programmable Logic Controller is connected according to described first and second relay of the output control of described comparison.
Further, the described feedback voltage ground of described motor is by analog quantity spread module input Programmable Logic Controller, described Programmable Logic Controller compares described feedback voltage and described second feedback voltage of described motor, and whether described Programmable Logic Controller is connected according to described first and second relay of the output control of described comparison.
Further, the model of described analog quantity spread module is EM235, and the model of described Programmable Logic Controller is PLC-226CN.
Further, described PLC-226CN inside has the first timer and the second timer, and described the first timer is used for the described timing of described step 103, and described the second timer is used for the described timing of described step 105; Described the first off-position time is set by described the first timer, and described the second off-position time is set by described the second timer.
Further, described PLC-226CN inside has counter, and described target circulation number of times is set by described counter, and described counter is counted and more described cycle index and described target circulation number of times in described step 106 described cycle index.
Further, the present invention also provides a kind of device of automobile air-conditioning throttle endurance quality test, use the method for described automobile air-conditioning throttle endurance quality test, it is characterized in that, comprise a plurality of described first and second relays, described Programmable Logic Controller and described analog quantity spread module; Described analog quantity spread module links to each other with described Programmable Logic Controller, and described Programmable Logic Controller links to each other with each described first and second relay; Each described first and second relay is connected to the power end of each described motor, and described analog quantity spread module links to each other with the signal end of described each described motor.
Further, the device of described automobile air-conditioning throttle endurance quality test also comprises touch-screen, described touch-screen links to each other with described Programmable Logic Controller, described Programmable Logic Controller makes described touch-screen show rotary state and described feedback voltage, described cycle index, described target circulation number of times, described the first off-position time, described the second off-position time and the information that reports an error of each described motor, has function button on the described touch-screen to control described Programmable Logic Controller.
Further, when described Programmable Logic Controller is judged one or more generation stall in the described motor, described Programmable Logic Controller makes described touch-screen show the described information that reports an error, and described first and second relay of described one or more motors is all disconnected; When described analog quantity spread module judged that rocking of described automobile air-conditioning throttle surpasses threshold value, described Programmable Logic Controller made described touch-screen show the described information that reports an error, and described first and second relay of described each motor is all disconnected.
In a preferred embodiment of the present invention, used the method and apparatus of automobile air-conditioning throttle endurance quality test of the present invention automobile air-conditioning throttle has been carried out the endurance quality test.The device of automobile air-conditioning throttle endurance quality test of the present invention comprises a plurality of first and second relays, Programmable Logic Controller PLC-226CN, analog quantity spread module EM235 and touch-screen HMI-TP177A.Automobile air-conditioning throttle is by a plurality of motor-driven, each motor all connects first relay and second relay, this motor forward when the first relay is connected, this motor reversal when the second relay is connected, this motor was out of service when first and second relay all disconnected.The signal end of each motor is connected respectively to analog quantity spread module EM235, analog quantity spread module EM235 is connected to Programmable Logic Controller PLC-226CN, Programmable Logic Controller PLC-226CN connects each first and second relay, and touch-screen HMI-TP177A links to each other with Programmable Logic Controller PLC-226CN.Correspondingly, automobile air-conditioning throttle endurance performance testing method of the present invention is: 1, set the first feedback voltage according to test request in Programmable Logic Controller PLC-226CN, the second feedback voltage, the first off-position time, the second off-position time and target circulation number of times, making cycle index is zero, makes a plurality of motors out of service; 2, Programmable Logic Controller PLC-226CN sends instruction, running by first and second each motor of Control, so that feedback voltage convergence first feedback voltage of each motor, in operation process, the feedback voltage of each motor of analog quantity spread module EM235 Real Time Monitoring, and this feedback voltage is transferred to Programmable Logic Controller PLC-226CN, when the feedback voltage that detects motor as Programmable Logic Controller PLC-226CN arrives the first feedback voltage, Programmable Logic Controller PLC-226CN sends instruction, makes motor out of service by first and second relay; 3, when the feedback voltage of all motors all arrives the first feedback voltage, the timer in the Programmable Logic Controller PLC-226CN begins timing so that all motors all keep state out of service at the first off-position in the time; 4, timing when the first off-position time finishes, Programmable Logic Controller PLC-226CN sends instruction, by first, each motor operation of two Controls, so that feedback voltage convergence second feedback voltage of each motor, in operation process, the feedback voltage of each motor of analog quantity spread module EM235 Real Time Monitoring, and this feedback voltage is transferred to Programmable Logic Controller PLC-226CN, when the feedback voltage that detects motor as Programmable Logic Controller PLC-226CN arrives the second feedback voltage, Programmable Logic Controller PLC-226CN sends instruction, by first, two relays make motor out of service; 5, when the feedback voltage of all motors all arrives the second feedback voltage, timer in the Programmable Logic Controller PLC-226CN begins timing so that all motors all keep state out of service at the second off-position in the time, until the timing of the second off-position time finishes, finish thus a test loop cycle; 6, the counter of Programmable Logic Controller PLC-226CN inside adds one to cycle index, if cycle index does not arrive the target circulation number of times, then continue test loop, until cycle index reaches the target circulation number of times, Programmable Logic Controller PLC-226CN cuts off all signals, and test finishes.
This shows, the method and apparatus of automobile air-conditioning throttle endurance quality test of the present invention has the following advantages:
1, the motor that drives automobile air-conditioning throttle is used the mechanical off-position of the alternative prior art of electric off-position, and the off-position position can arrange arbitrarily.
Automobile air-conditioning throttle is driven by a plurality of motor, that prior art is used the durability test device of automobile air-conditioning throttle is the Programmable Logic Controller PLC of old-fashioned Omron, its off-position mode is after automobile air-conditioning throttle arrives two extreme positions, utilize the mechanical screens of block to block the rocking arm of motor, thereby make motor rotation blockage produce locked rotor current, after PLC detected locked rotor current, the control output end mouth was realized off-position.This mechanical screens, the control accuracy that stops by force are lower, and ceaselessly stall is larger to the damage of motor, and can't automobile air-conditioning throttle be stopped in the centre position according to testing requirements.And the present invention has used electric off-position mode; control the off-position of motor with feedback voltage; need not to use mechanical screens mode; therefore can protect motor not to be damaged because of stall; so that safer to the test of the endurance quality of automobile air-conditioning throttle, precision is higher; and the operating any off-position of motor position can be set according to the needs of testing requirements, solve prior art and can only make motor in the problem of two extreme position off-positions.
2, between two kinds of operation modes of motor, is set the off-position time.
This type of method of testing of prior art and device be the off-position timing link after motor arrives the off-position position not, and namely motor is after arriving the off-position position, at once toward next off-position position operation.And the present invention is provided with the off-position time between two kinds of operation modes of motor, and can regulate the off-position time according to testing requirements, and this meets automobile air-conditioning throttle situation in actual use more.
3, be provided with motor rotation blockage and automobile air-conditioning throttle and rock excessive dual fail-safe.
There is not safety precautions in this type of method of testing of prior art and the device,, in case in the long duration test process motor rotation blockage occurs, Current rise may cause that wire catches fire, thereby damages proving installation; In addition after motor arrives the off-position position, because automobile air-conditioning throttle is subject to the wind action of the fan blower in the air conditioning for automobiles, it is excessive that automobile air-conditioning throttle may rock, the position of automobile air-conditioning throttle will not meet the off-position position of testing requirements thus, at this moment should stop test, but this type of method of testing of prior art and device can't detect automobile air-conditioning throttle and rock excessive phenomenon, therefore can proceed test.And the present invention is provided with and judges the out-of-date program segment of motor operation, in case motor generation stall, then automatic cut-off motor and blower power supply, touch-screen shows " fault " simultaneously, waits for slip-stick artist's inspection and maintenance, thus proving installation has obtained safeguard protection.In addition; the present invention also is provided with and judges that automobile air-conditioning throttle rocks excessive program segment; in case it is excessive that the wind action that automobile air-conditioning throttle is subject to fan blower behind the motor off-position shakes; then automatic cut-off motor and blower power supply; and touch-screen shows " fault "; wait for slip-stick artist's inspection and maintenance, thereby proving installation has obtained safeguard protection.
4, can set test parameters.
Do not use touch-screen in this type of proving installation of prior art, test parameters is set need to carry out in computer, more loaded down with trivial details.And the present invention has used touch-screen, and the user can input the first feedback voltage, the second feedback voltage, the first off-position time, the second off-position time and target circulation number of times according to testing requirements in touch-screen, make the setting of test parameters convenient and directly perceived.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand fully purpose of the present invention, feature and effect.
Description of drawings
Fig. 1 is the process flow diagram of automobile air-conditioning throttle endurance performance testing method of the present invention.
Fig. 2 is the structural representation of automobile air-conditioning throttle durability test device of the present invention, has shown wherein that motor in automobile air-conditioning throttle durability test device of the present invention and the car air-conditioner is connected with fan blower to be connected.
Fig. 3 is the process flow diagram for the emergency protection program of automobile air-conditioning throttle durability test device of the present invention.
Embodiment
Specify embodiments of the invention below in conjunction with accompanying drawing, Fig. 1 is the process flow diagram of automobile air-conditioning throttle endurance performance testing method of the present invention, and Fig. 2 is the structural representation of automobile air-conditioning throttle durability test device of the present invention.
As shown in Figure 2, automobile air-conditioning throttle durability test device of the present invention comprises 4 the first relays, 4 the second relays, Programmable Logic Controller 5, analog quantity spread module 6,3 power supplys, touch-screen 8, computing machine 9 and fan blower relays 13.Wherein, 4 the first relays are respectively the first relay 11,21,31 and 41,4 the second relays are respectively the first relay 12,22,32 and 42, and they are all the Omron relay; The model of Programmable Logic Controller 5 is PLC-226CN; The model of analog quantity spread module 6 is EM235; Touch-screen 8 is black and white touch-screens, and its model is HMI TP177A; 3 power supplys are respectively power supply 71,72 and 73, and power supply 71 is the 12V Switching Power Supply, and power supply 72 is the Switching Power Supply of 24V, and power supply 73 is the Switching Power Supply of 5V.Analog quantity spread module 6 is connected to Programmable Logic Controller 5 by the special-purpose winding displacement on it, the control loop end of first and second relay of output terminal and each of Programmable Logic Controller 5 links to each other, and touch-screen 8 uses the PPI/RS232 communication cable to link to each other with Programmable Logic Controller 5.Power supply 71 links to each other with the control loop end of each first and second relay, the power end of each motor, main circuit terminal and the fan blower 14 of fan blower relay 13, is they power supplies; Power supply 72 links to each other with power end, analog quantity spread module 6 and the power end of touch-screen 8 of Programmable Logic Controller 5, is they power supplies; Power supply 73 links to each other with the power supply input port, feedback voltage input port of analog quantity spread module 6 and the power end of each motor, is they power supplies.
During use, the first relay 11 of automobile air-conditioning throttle durability test device of the present invention, 21,31 and 41, the second relay 12,22,32 and 42 main circuit terminal respectively with air conditioning for automobiles in motor 1,2,3 link to each other with 4 power end, wherein, the power end of motor 1 connects the main circuit terminal of the first relay 11 and the second relay 12, the power end of motor 2 connects the main circuit terminal of the first relay 21 and the second relay 22, the power end of motor 3 connects the main circuit terminal of the first relay 31 and the second relay 32, and the power end of motor 4 connects the main circuit terminal of the first relay 41 and the second relay 42.(namely the first relay is connected in the control loop end energising of the first relay, be specially: the control loop end of the first relay applies certain voltage, the control loop coil of the first relay just has certain electric current, thereby generation galvanomagnetic effect, the armature that the major loop of adhesive the first relay breaks, the major loop of closed the first relay) time, the motor forward; (namely the second relay is connected in the control loop end energising of the second relay, be specially: the voltage of the control loop end of the second relay, the control loop coil of the second relay just has certain electric current, thereby generation galvanomagnetic effect, the armature that the major loop of adhesive the second relay breaks, the major loop of closed the second relay) time, motor reversal; The neither energising of control loop end of first and second relay (is that first and second relay all disconnects, be specially: the voltage that removes the control loop end of first and second relay, the electromagnetic force of the control loop coil of first and second relay disappears, armature is subjected to the restoring force effect of spring, get back to the origin-location, thereby in the time of the outage of the major loop of first and second relay), motor is out of service.Take motor 1, the first relay 11 and the second relay 12 as example, motor 1 forward when the first relay 11 is connected; Motor 1 counter-rotating when the second relay 12 is connected; Motor 1 was out of service when the first relay 11 and the second relay 12 all disconnected.The main circuit terminal of the fan blower relay 13 of automobile air-conditioning throttle durability test device of the present invention links to each other with fan blower 14 in the air conditioning for automobiles, when the control loop end of fan blower relay 13 is switched on, fan blower relay 13 is connected, fan blower 14 work this moment, the wind of the suction of fan blower 14 blows out from each air door, can be each electric motor temperature reduction.The input end of the analog quantity spread module 6 of automobile air-conditioning throttle durability test device of the present invention and motor 1,2,3 link to each other with 4 signal end, to gather motor 1,2,3 and 4 feedback voltage, motor 1,2,3 and 4 ground wire are all by being connected to analog quantity spread module 6 with ground connection simultaneously.Touch-screen 5 can show the rotary state of each motor and feedback voltage, cycle index, target circulation number of times, the first off-position time, the second off-position time and the information that reports an error, and the information that reports an error for example is " fault ".And the user can utilize the function button control Programmable Logic Controller 5 on the touch-screen 5, for example sets the first feedback voltage, the second feedback voltage, the first off-position time, the second off-position time and target circulation number of times.
Use automobile air-conditioning throttle durability test device of the present invention to carry out the test of automobile air-conditioning throttle endurance quality.As shown in Figure 1, the concrete steps of automobile air-conditioning throttle endurance performance testing method of the present invention are as follows:
In this step, according to concrete test request, set the first feedback voltage, the second feedback voltage, the first off-position time, the second off-position time and target circulation times N with Programmable Logic Controller 5, and with cycle index i zero clearing, i.e. i=0.For example, setting the first feedback voltage in the present embodiment is 0.5V, and the second feedback voltage is 4.5V, and the target circulation number of times is 30000 times (N=30000); Wherein the target circulation number of times is set by the counter of Programmable Logic Controller 5 inside, and the first off-position time and the second off-position time are set by the first timer and second timer of Programmable Logic Controller 5 inside respectively.In addition, in the present embodiment, the user can utilize the function button on the touch-screen 5 to carry out aforesaid operations.
In this step, each motor rotation of Programmable Logic Controller 5 instructions and make the first feedback voltage of setting in the feedback voltage convergence step 101 of each motor, when the feedback voltage of motor arrived the first feedback voltage, the instruction motor was out of service.
Particularly, analog quantity spread module 6 is obtained motor 1,2,3 and 4 feedback voltage in real time, and the feedback voltage of each motor is transferred to Programmable Logic Controller 5.Programmable Logic Controller 5 is by comparing feedback voltage and first feedback voltage (0.5V) of each motor, and instruction motor forward or reverse is so that feedback voltage convergence first feedback voltage of this motor; When the feedback voltage of motor arrived the first feedback voltage, the instruction motor was out of service.Take motor 1 as example, analog quantity spread module 6 is obtained the feedback voltage of motor 1 in real time, and this feedback voltage is transferred to Programmable Logic Controller 5; Programmable Logic Controller 5 is by relatively this feedback voltage and the first feedback voltage are determined motor 1 forward or reverse; When Programmable Logic Controller 5 was determined motor 1 forward, it sent the forward instruction, and adhesive the first relay 11 and disconnect the second relay 12 makes motor 1 forward; When Programmable Logic Controller 5 was determined motors 1 counter-rotating, it sent the forward instruction, and adhesive the second relay 12 and disconnect the first relay 11 makes motor 1 counter-rotating; When the feedback voltage of motor 1 arrived the first feedback voltage, Programmable Logic Controller 5 instruction motors were out of service, disconnected the first relay 11 and disconnected the second relay 12, made motor 1 out of service.Similarly, analog quantity spread module 6 is obtained the feedback voltage of other motors, and the feedback voltage of Programmable Logic Controller 6 other motors of comparison and the first feedback voltage are to control the rotary state of other motors.
In this step, when the feedback voltage of each motor all arrives the first feedback voltage, begin the timing of the first off-position time, and each motor of instruction keeps state out of service at the first off-position in the time.
Particularly, when motor 1,2,3 and 4 all arrived the first feedback voltage, all motors were all out of service, and at this moment the first timer of Programmable Logic Controller 5 inside begins timing; Each motor of Programmable Logic Controller 5 instructions keeps state out of service at the first off-position within the time.For example setting for the first off-position time in the step 101 is 10s, the timer timing 10s of Programmable Logic Controller 5 inside then, and each motor of Programmable Logic Controller 5 instructions keeps state out of service in 10s.
In this step, each motor rotation of Programmable Logic Controller 5 instructions and make the second feedback voltage of setting in the feedback voltage convergence step 101 of each motor, when the feedback voltage of motor arrived the second feedback voltage, the instruction motor was out of service.
Particularly, analog quantity spread module 6 is obtained motor 1,2,3 and 4 feedback voltage in real time, and the feedback voltage of each motor is transferred to Programmable Logic Controller 5.Programmable Logic Controller 5 is by comparing feedback voltage and second feedback voltage (4.5V) of each motor, and instruction motor forward or reverse is so that feedback voltage convergence second feedback voltage of this motor; When the feedback voltage of motor arrived the second feedback voltage, the instruction motor was out of service.Because this step is similar to step 102, its detailed process is not repeated herein.
In this step, when the feedback voltage of each motor all arrives the second feedback voltage, begin the timing of the second off-position time, and each motor of instruction keeps state out of service at the second off-position in the time.
Particularly, when motor 1,2,3 and 4 all arrived the second feedback voltage, all motors were all out of service, and at this moment the second timer of Programmable Logic Controller 5 inside begins timing; Each motor of Programmable Logic Controller 5 instructions keeps state out of service at the second off-position within the time.For example setting for the second off-position time in the step 101 is 15s, the second timer timing 15s of Programmable Logic Controller 5 inside then, and each motor of Programmable Logic Controller 5 instructions keeps state out of service within 15s.
In this step, the second off-position time timing in step 105 finishes, and the counter of Programmable Logic Controller 5 inside makes cycle index i increase once, i.e. i++.The target circulation times N that counter has been set in cycle index i and the step 101 more if cycle index i is less than the target circulation times N, then enters step 102; If cycle index i is not less than the target circulation times N, then test finishes.Wherein, can cut off by Programmable Logic Controller 5 instructions the control loop end of all relays, motor 1,2,3,4 and fan blower 14 out of service.
Durable new can method of testing being written in the Programmable Logic Controller 5 of the durable new energy proving installation of automobile air-conditioning throttle of the present invention as master routine of automobile air-conditioning throttle of the present invention in addition, also is equipped with safety protection program in the Programmable Logic Controller 5.As shown in Figure 3, in test, whether each motor operation of Programmable Logic Controller 5 real-time judge is out-of-date, for example the first (two) timers in the Programmable Logic Controller 5 are set each motor in step 104(step 102) in do not arrive in its feedback voltage 30s the second feedback voltage (the first feedback voltage) then for this motor occur to operate out-of-date, particularly in the present embodiment, when the timing in step 104 of the first timer surpasses 30s, the feedback voltage of motor does not arrive the second feedback voltage yet, then judge motor generation stall, at this moment Programmable Logic Controller 5 makes touch-screen 8 show the information " fault " that reports an error, and cut off to each first, the power supply of two relays and fan blower relay 13; When the timing in step 102 of the second timer surpasses 30s, the feedback voltage of motor does not arrive the first feedback voltage yet, then judge motor generation stall, at this moment Programmable Logic Controller 5 makes touch-screen 8 show the information " fault " that reports an error, and cuts off the power supply to each first and second relay and fan blower relay 13.In addition, after analog quantity spread module 6 Programmable Logic Controllers 5 judge that motor arrives the first feedback voltage or the second feedback voltage, be subjected to the impact of fan blower, whether rocking back and forth of car air-conditioner air door surpasses threshold value (upper limit of the shaking amplitude of the automobile air-conditioning throttle of namely setting), for example, set motor in step 103(step 105) in the deviation of its feedback voltage and the first (two) feedback voltage be rocking above threshold value of car air-conditioner air door when surpassing 5%, particularly in the present embodiment, the motor feedback voltage that records in step 103 when analog quantity spread module 6 is during greater than 0.525V or less than 0.475V the time, judge that then rocking of car air-conditioner air door surpasses threshold value, and report to Programmable Logic Controller 5 so that touch-screen 8 show report an error information " fault " and cut off to each first, the power supply of two relays; The motor feedback voltage that records in step 105 when analog quantity spread module 6 is during greater than 4.725V or less than 4.275V, judge that then rocking of car air-conditioner air door surpasses threshold value, and report to Programmable Logic Controller 5 so that touch-screen 8 shows reports an error information " fault " and cut off power supply to each first and second relay and fan blower relay 13.
More than describe preferred embodiment of the present invention in detail.The ordinary skill that should be appreciated that this area need not creative work and just can design according to the present invention make many modifications and variations.Therefore, all in the art technician all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1. the method for automobile air-conditioning throttle endurance quality test, described automobile air-conditioning throttle be is characterized in that by a plurality of motor-driven in the air conditioning for automobiles, comprising:
Step (101) is set the first feedback voltage, the second feedback voltage, the first off-position time, the second off-position time and target circulation number of times, makes that cycle index is zero, makes described a plurality of motor out of service;
Each described motor rotation of step (102) instruction and make described first feedback voltage of feedback voltage convergence of each described motor, when the described feedback voltage of described motor arrived described the first feedback voltage, the described motor of instruction was out of service;
When step (103) all arrives described the first feedback voltage when the described feedback voltage of each described motor, begin the timing of described the first off-position time, and each described motor of instruction keeps state out of service at described the first off-position in the time;
The timing of described the first off-position time of step (104) finishes, each described motor rotation of instruction and make described second feedback voltage of described feedback voltage convergence of each described motor, when the described feedback voltage of described motor arrived described the second feedback voltage, the described motor of instruction was out of service;
When step (105) all arrives described the second feedback voltage when the described feedback voltage of each described motor, begin the timing of described the second off-position time, and each described motor of instruction keeps state out of service at described the second off-position in the time;
The timing of described the second off-position time of step (106) finishes, and makes the increase of described cycle index once, and more described cycle index and described target circulation number of times are if described cycle index less than described target circulation number of times, then enters step (102); If described cycle index is not less than described target circulation number of times, then test finishes.
2. the method for automobile air-conditioning throttle endurance quality as claimed in claim 1 test, wherein each described motor all connects first relay and second relay, described motor forward when described the first relay connection and described the second relay disconnect, described motor reversal when described the first relay disconnection and described the second relay are connected, described motor was out of service when described first and second relay all disconnected.
3. the method for automobile air-conditioning throttle endurance quality as claimed in claim 2 test, the described feedback voltage of wherein said motor is by analog quantity spread module input Programmable Logic Controller, described Programmable Logic Controller compares described feedback voltage and described first feedback voltage of described motor, and whether described Programmable Logic Controller is connected according to described first and second relay of the output control of described comparison.
4. the method for automobile air-conditioning throttle endurance quality as claimed in claim 2 test, the described feedback voltage of wherein said motor is by analog quantity spread module input Programmable Logic Controller, described Programmable Logic Controller compares described feedback voltage and described second feedback voltage of described motor, and whether described Programmable Logic Controller is connected according to described first and second relay of the output control of described comparison.
5. such as the method for claim 3 or 4 described automobile air-conditioning throttle endurance quality tests, the model of wherein said analog quantity spread module is EM235, and the model of described Programmable Logic Controller is PLC-226CN.
6. the method for automobile air-conditioning throttle endurance quality as claimed in claim 5 test, wherein said PLC-226CN inside has the first timer and the second timer, described the first timer is used for the described timing of described step (103), and described the second timer is used for the described timing of described step (105); Described the first off-position time is set by described the first timer, and described the second off-position time is set by described the second timer.
7. the method for automobile air-conditioning throttle endurance quality as claimed in claim 6 test, wherein said PLC-226CN inside has counter, described target circulation number of times is set by described counter, and described counter is counted and more described cycle index and described target circulation number of times in described step (106) described cycle index.
8. the device of automobile air-conditioning throttle endurance quality test, use the method for automobile air-conditioning throttle endurance quality test as claimed in claim 7, it is characterized in that, comprise a plurality of described first and second relays, described Programmable Logic Controller and described analog quantity spread module; Described analog quantity spread module links to each other with described Programmable Logic Controller, and described Programmable Logic Controller links to each other with each described first and second relay; Each described first and second relay is connected to the power end of each described motor, and described analog quantity spread module links to each other with the signal end of described each described motor.
9. the device of automobile air-conditioning throttle endurance quality as claimed in claim 8 test, wherein also comprise touch-screen, described touch-screen links to each other with described Programmable Logic Controller, described Programmable Logic Controller makes described touch-screen show rotary state and described feedback voltage, described cycle index, described target circulation number of times, described the first off-position time, described the second off-position time and the information that reports an error of each described motor, has function button on the described touch-screen to control described Programmable Logic Controller.
10. the device of automobile air-conditioning throttle endurance quality as claimed in claim 9 test, wherein when described Programmable Logic Controller is judged one or more generation stall in the described motor, described Programmable Logic Controller makes described touch-screen show the described information that reports an error, and described first and second relay of described each motor is all disconnected; When described analog quantity spread module judged that rocking of described automobile air-conditioning throttle surpasses threshold value, described Programmable Logic Controller made described touch-screen show the described information that reports an error, and described first and second relay of described each motor is all disconnected.
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