CN113433930A - Safety control testing method and system for transfer case gear shifting controller - Google Patents
Safety control testing method and system for transfer case gear shifting controller Download PDFInfo
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- CN113433930A CN113433930A CN202110853453.9A CN202110853453A CN113433930A CN 113433930 A CN113433930 A CN 113433930A CN 202110853453 A CN202110853453 A CN 202110853453A CN 113433930 A CN113433930 A CN 113433930A
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- 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
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
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Abstract
The application relates to a safety control testing method and system for a transfer case gear shifting controller, belonging to the technical field of quality detection of automobile parts, and comprising the following steps of: the detected transfer case moves to a test area; the PC transmits signals to the PLC; the PLC judges the sequence of the detected transfer case; the PLC controller overlaps an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to an ECU of the gear shifting controller, and switches on POWER and IG trigger signals; the gear shifting controller ECU transmits a control signal to the detected transfer case, and the detected transfer case controls the gear shifting motor to shift gears according to the received control signal; the detected transfer case transmits a gear feedback signal to a gear shifting controller ECU; the ECU of the gear shifting controller calculates the test result, and after the test is finished, the PLC controller and the ECU of the gear shifting controller are completely disconnected.
Description
Technical Field
The invention relates to the technical field of quality detection of automobile parts, in particular to a safety control testing method and system for a transfer case gear shifting controller.
Background
The transfer case is a gear drive system, its input shaft is directly or via universal drive device connected with second shaft of speed changer, and its several output shafts are respectively connected with drive axles by means of universal drive device. The transfer case is generally provided with two gears, and a special transfer case is also provided with a plurality of gears. The gear shifting controller of the transfer case can control the gear shifting of the transfer case, and when the transfer case is subjected to factory inspection, the reliability and the stability of gear shifting of the transfer case must be detected, so that the accuracy of gear shifting of the transfer case is guaranteed.
A conventional transfer case gear-shifting test system generally uses PLC closed-loop control for detection, the control flow is that after the PLC receives a control instruction, a gear-shifting control box is controlled to send a gear-shifting electric signal to the transfer case, and gear information of the transfer case after a gear-shifting motor of the transfer case performs corresponding action is fed back to the PLC to form a closed loop.
The above prior art solutions have the following drawbacks: if the intermediate link of the closed-loop test system is in a problem, the accuracy of gear shifting control can be directly influenced, and the stability of the test can be directly influenced.
Disclosure of Invention
On the one hand, in order to reduce the influence on the test stability caused by the problem of the intermediate link, the application provides a safety control test method for the transfer case gear shifting controller.
The application provides a transfer case shift controller safety control test method, adopts following technical scheme:
a safety control testing method for a transfer case gear shifting controller comprises the following steps:
the detected transfer case moves to a test area;
the PC transmits signals to the PLC;
the PLC judges the sequence of the detected transfer case;
the PLC controller overlaps an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to an ECU of the gear shifting controller, and switches on POWER and IG trigger signals;
the gear shifting controller ECU transmits a control signal to the detected transfer case, and the detected transfer case controls the gear shifting motor to shift gears according to the received control signal;
the detected transfer case transmits a gear feedback signal to a gear shifting controller ECU;
the ECU calculates a test result;
and after the test is finished, the PLC and the gear shifting controller ECU are completely disconnected.
By adopting the scheme, the PLC adopts a signal point-to-point interaction mode to automatically control the gear shifting controller ECU, the whole test flow forms the direct closed-loop control of the ECU and the detected transfer case, the gear shifting motor is directly driven by the ECU, the test stability is enhanced, and the cost is greatly saved.
Preferably, after the transfer case to be tested moves to the test area, the method further comprises the following steps:
the PC calculates the time sequence, and transmits a time sequence signal to the PLC controller and recalculates the time sequence when the time sequence reaches the test time sequence;
the PLC judges the series type of the currently detected transfer case, and the PLC selects test contents according to the judged series type;
the PLC controller is used for overlapping an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to point with an ECU (electronic control Unit);
after a set time, switching on POWER;
switching on an IG trigger signal after a set time;
the gear shifting controller ECU transmits a control signal to the detected transfer case, and the detected transfer case controls the gear shifting motor to shift gears according to the received control signal;
the detected transfer case transmits a gear feedback signal to a gear shifting controller ECU;
the ECU calculates a test result;
and after the test is finished, the PLC and the gear shifting controller ECU are completely disconnected.
By adopting the scheme, the testing process can be automatically carried out, the PC automatically carries out timing, the testing system is controlled in a timing mode, the lapping working sequence is carried out in an automatic mode, the testing stability in the automatic mode is ensured, and the problem is not easy to occur.
Preferably, the set time of the POWER on after the set time elapses and the set time of the IG on trigger signal after the set time elapses are both 1.5 seconds.
By adopting the scheme, the waiting time of 1.5 seconds not only ensures the system response time, but also does not wait too long.
Preferably, the PLC controller determines a series type of the currently-detected transfer case, and after selecting the test content according to the determined series type, the PLC controller further includes the following steps:
the PLC judges the state of the current test board, and the next step is carried out after no abnormal signal linkage.
By adopting the scheme, the PLC can automatically judge the product type and automatically select the corresponding test scheme according to the product type.
Preferably, a gate variable in the interaction information of the PLC and the PC is defined, wherein the gate variable comprises fixed frequency and count;
the PLC transmits the counting value to the PC in real time by means of program execution frequency;
the PC feeds back the count value to the PLC controller;
the PLC compares the received gatekeeper variable with the own gatekeeper variable;
and if the received gate variable is inconsistent with the own gate variable, interrupting the test process.
By adopting the scheme, the communication state is ensured to be intact through the gatekeeper variable between the PLC and the PC in the test process, and the communication state between the PLC and the PC is ensured to be good by comparing the gatekeeper variable with the PC in real time.
Preferably, all count values are cleared when the count value of the PLC controller exceeds the maximum set value.
By adopting the scheme, the PLC controller automatically clears the counting, and the counting overflow and the fault are avoided.
Preferably, after the shift controller ECU calculates the test result, the method further includes the steps of:
when the test result is an internal fault in the gear shifting process, the gear shifting controller ECU transmits the test result to the PC, and the PC processes fault information;
and the PC transmits the test result to the PLC, and the PLC gives an alarm display and prompt according to the test result.
Through adopting above-mentioned scheme, when the process of shifting internal fault, carry out fault handling by PC, can realize stronger calculation function, PLC reports to the police, in time notifies the staff.
Preferably, after the shift controller ECU calculates the test result, the method further includes the steps of:
and when the test result is that the gear shifting peripheral test bench has faults, the gear shifting controller ECU transmits the test result to the PLC, and the PLC adjusts the control program according to the test result.
By adopting the scheme, when the gear shifting peripheral test bench has a fault, the PLC is used for self-adjusting the program.
On the other hand, in order to reduce the influence on the test stability caused by the problem of the intermediate link, the application provides a safety control test system for a shift controller of a transfer case.
The application provides a pair of transfer case shift controller safety control test system adopts following technical scheme:
a safety control test system for a transfer case gear shifting controller comprises a PC, a PLC, a gear shifting controller ECU, a host control system, a PLC control system and an ECU control system;
the host control system is arranged in the PC, transmits a starting signal to the PLC control system and receives a test result transmitted by the ECU control system;
the PLC control system is arranged in the PLC controller, after receiving the starting signal, the PLC control system controls the PLC controller to lap an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to an ECU of the gear shifting controller, and is connected with POWER and IG trigger signals, and the PLC control system transmits test contents to the ECU control system;
the ECU control system is arranged in the gear shifting controller ECU, controls the gear shifting motor of the transfer case to shift gears after receiving test contents, receives gear feedback signals transmitted by the transfer case, calculates test results according to the gear feedback signals, sends the test results to the host control system, and then disconnects all lap joints of the PLC and the gear shifting controller ECU.
By adopting the scheme, the PLC adopts a signal point-to-point interaction mode to automatically control the gear shifting controller ECU, the whole test flow forms the direct closed-loop control of the ECU and the detected transfer case, the gear shifting motor is directly driven by the ECU, the test stability is enhanced, and the cost is greatly saved.
Preferably, the host control system comprises a manual control module, an automatic control module and an information receiving module;
the manual control module receives an input starting signal and transmits the starting signal to the PLC control system;
the automatic control module is used for timing, and when the timing reaches a set value, a time sequence signal is transmitted to the PLC control system;
the information receiving module receives a test result;
the PLC control system comprises a sequence storage module, a sequence detection module, a manual lap joint module and an automatic lap joint module;
the sequence storage module stores a plurality of kinds of sequence information;
the sequence detection module detects the sequence of the detected transfer case, calls corresponding sequence information stored by the sequence storage module according to the detected sequence, and transmits the sequence information to the ECU control system;
the manual lapping module receives a starting signal transmitted by the manual control module, controls the PLC to lap an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to the gear shifting controller ECU after the manual lapping module receives the starting signal, and switches on POWER and IG trigger signals;
the automatic lapping module receives a time sequence signal transmitted by the automatic control module, controls the PLC to lap an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to the gear shifting controller ECU after the automatic lapping module receives the time sequence signal, and switches on POWER after a set time, and switches on an IG trigger signal after the set time;
the ECU control system comprises a test control module, a feedback receiving module and a result calculating module;
the test control module receives the sequence information transmitted by the sequence detection module, and controls the gear shifting motor of the detected transfer case to shift gears according to the received sequence information;
the feedback receiving module receives a gear feedback signal transmitted by the detected transfer case;
and the result calculation module calls the gear feedback signal of the feedback receiving module and calculates a test result according to the gear feedback signal and the sequence information.
By adopting the scheme, the test system is divided into automatic start and manual start, the PC automatically times during automatic start, the test system is controlled in a timing mode, the lapping working sequence is carried out in an automatic mode, the test stability in the automatic mode is ensured, and the problem is not easy to occur.
In conclusion, the invention has the following beneficial effects:
1. PLC adopts the point-to-point interactive mode of signal to carry out automatic control to gear shifting controller ECU, through ECU direct drive gear shifting motor, strengthens the stability of test to can practice thrift the cost greatly.
2. The test system is divided into automatic start and manual start, the lapping working sequence is carried out in an automatic mode, the test stability in the automatic mode is ensured, and the problem is not easy to occur.
Drawings
FIG. 1 is an overall system block diagram of a transfer case shift controller safety control testing system according to an embodiment of the application;
FIG. 2 is a block diagram of a transfer case shift controller safety control testing system according to an embodiment of the application.
In the figure, 1, a host control system; 11. an information receiving module; 12. a manual control module; 13. an automatic control module; 2. a PLC control system; 21. a manual lap joint module; 22. an automatic lap joint module; 23. a sequence storage module; 24. a sequence detection module; 3. an ECU control system; 31. a test control module; 32. a feedback receiving module; 33. a result calculation module; 4. PC; 5. a PLC controller; 6. a gear shift controller.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a safety control testing method for a transfer case gear shifting controller 6, and the embodiment I comprises the following steps:
the method comprises the following specific steps:
the tested transfer case moves to the test area. The tested transfer cases are moved to a test area through a transportation line or a worker, and the same series of tested transfer cases are tested in the same batch.
The worker control PC4 transmits a signal to the PLC controller 5.
The PLC judges the sequence of the detected transfer case and determines the test content according to the judged sequence.
The watchdog variables in the information interaction of PLC controller 5 with PC4 are defined, including fixed frequency and count.
The PLC controller 5 transfers the count value to the PC4 in real time depending on the program execution frequency. All the count values are cleared when the count value of the PLC controller 5 exceeds the maximum set value. The PLC controller 5 automatically clears the counting, and the counting overflow and the fault are avoided.
The PC4 feeds back the count value to the PLC controller 5.
The PLC controller 5 compares the received watchdog variable with its own watchdog variable.
And if the received gate variable is inconsistent with the own gate variable, interrupting the test process. In the test process, the communication state between the PLC and the PC4 is ensured to be intact through the watchdog variable, and the communication state between the PLC and the PC4 is ensured to be good by comparing the watchdog variable with the PLC 4 in real time.
The PLC 5 overlaps the ENCODE feedback signal, the CLUTCH signal and the SHIFT signal point to the ECU of the gear shifting controller 6, and switches on POWER and IG trigger signals.
The gear shifting controller 6ECU transmits a control signal to the detected transfer case, and the detected transfer case controls the gear shifting motor to shift gears according to the received control signal.
The detected transfer case transmits a gear feedback signal to the shift controller 6 ECU.
The shift controller 6ECU calculates the test result.
When the test result is an internal failure of the gear shifting process, the gear shifting controller 6ECU transmits the test result to the PC4, and the PC4 processes the failure information. The PC4 transmits the test result to the PLC controller 5, and the PLC controller 5 makes alarm display and prompt according to the test result. When the internal fault of the gear shifting process occurs, the PC4 performs fault processing, a stronger calculation function can be realized, and the PLC gives an alarm to inform workers in time.
And when the test result is that the gear shifting peripheral test bench has a fault, the ECU of the gear shifting controller 6 transmits the test result to the PLC controller 5, and the PLC controller 5 adjusts the control program according to the test result. When the gear shifting peripheral test bench fails, the PLC is used for self-adjusting the program.
And after the test is finished, the PLC 5 and the gear shifting controller 6ECU disconnect all lap joints.
The implementation principle of the safety control testing method for the transfer case gear shifting controller 6 in the embodiment of the application is as follows: PLC adopts the point-to-point interactive mode of signal to carry out automatic control to gear shifting controller 6ECU, and whole test procedure has formed ECU and the direct closed-loop control who is detected the transfer case, through ECU direct drive gear shifting motor, strengthens the stability of test to can practice thrift the cost greatly.
Example two:
the method comprises the following specific steps:
the tested transfer case moves to the test area. The tested transfer cases are moved to a test area through a transportation line or a worker, and the same series of tested transfer cases are tested in the same batch.
The PC4 performs timing calculation, and the PC4 transmits a timing signal to the PLC controller 5 when the timing reaches the test timing and recalculates the timing.
The PLC 5 judges the type of the transfer case series to be detected at present, and the PLC 5 selects the test content according to the judged type of the series. The PLC controller 5 judges the state of the current test board, and carries out the next step after no abnormal signal linkage. The PLC controller 5 may automatically determine the product type and automatically select a corresponding test scenario according to the product type.
The PLC controller 5 overlaps the ENCODE feedback signal, CLUTCH signal, and SHIFT signal point-to-point with the ECU of the SHIFT controller 6.
POWER was turned on after 1.5 seconds.
The IG trigger was turned on after 1.5 seconds.
The gear shifting controller 6ECU transmits a control signal to the detected transfer case, and the detected transfer case controls the gear shifting motor to shift gears according to the received control signal.
The detected transfer case transmits a gear feedback signal to the shift controller 6 ECU.
The shift controller 6ECU calculates the test result.
And after the test is finished, the PLC 5 and the gear shifting controller 6ECU disconnect all lap joints.
The implementation principle of the safety control testing method for the transfer case gear shifting controller 6 in the embodiment of the application is as follows: the test process can be automatically carried out, the PC4 automatically carries out timing, the test system is controlled in a timing mode, the lapping working sequence is carried out in an automatic mode, the test stability in the automatic mode is guaranteed, and the problem is not easy to occur.
The embodiment of the application discloses transfer case shift controller 6 safety control test system, as shown in fig. 1, including PC4, PLC controller 5, shift controller 6ECU, host control system 1, PLC control system 2 and ECU control system 3. The host control system 1 is provided in the PC 4. The PLC control system 2 is provided in the PLC controller 5. The ECU control system 3 is provided in the shift controller 6 ECU.
As shown in fig. 2, the host control system 1 includes a manual control module 12, an automatic control module 13, and an information receiving module 11. The manual control module 12 receives the input start signal and transmits the start signal to the PLC control system 2. The automatic control module 13 performs timing, and transmits a timing signal to the PLC control system 2 when the timing reaches a set value. The information receiving module 11 receives the test result. The host control system 1 selects a starting module according to a manual control mode or an automatic control mode selected by a worker, and receives a starting signal input by the worker in the manual control mode to start a test. And starting the test system at fixed time in an automatic control mode.
As shown in fig. 2, the PLC control system 2 includes a sequence storage module 23, a sequence detection module 24, a manual lap module 21, and an automatic lap module 22. The sequence storage module 23 stores a variety of sequence information. The sequence information includes test contents and a test result calculation mode. The sequence detection module 24 detects the sequence of the detected transfer case, calls the corresponding sequence information stored in the sequence storage module 23 according to the detected sequence, and the sequence detection module 24 transmits the sequence information to the ECU control system 3. The manual lapping module 21 receives the starting signal transmitted by the manual control module 12, and after the manual lapping module 21 receives the starting signal, the PLC 5 is controlled to lap the ENCODE feedback signal, the CLUTCH signal and the SHIFT signal point to the ECU of the gear shifting controller 6, and the POWER and IG trigger signals are switched on. The automatic lapping module 22 receives the timing signal transmitted by the automatic control module 13, controls the PLC controller 5 to lap the ENCODE feedback signal, the CLUTCH signal and the SHIFT signal point to the ECU of the SHIFT controller 6 after the automatic lapping module 22 receives the timing signal, and switches on POWER after a set time, and switches on the IG trigger signal after a set time. The PLC control system 2 determines the test contents according to the product sequence, and simultaneously performs point-to-point lapping according to manual and automatic control modes.
As shown in fig. 2, the ECU control system 3 includes a test control module 31, a feedback receiving module 32, and a result calculation module 33. The test control module 31 receives the sequence information transmitted by the sequence detection module 24, and the test control module 31 controls the gear shifting motor of the detected transfer case to shift gears according to the received sequence information. The feedback receiving module 32 receives the gear feedback signal transmitted by the detected transfer case. The result calculating module 33 calls the gear feedback signal of the feedback receiving module 32 and calculates the test result according to the gear feedback signal and the sequence information. And the ECU control system 3 automatically executes the test according to the received test content, and simultaneously calculates the test result and returns the test result.
The test system is divided into automatic start and manual start, the PC4 automatically times when the test system is automatically started, the test system is controlled in a timing mode, the lapping working sequence is carried out in an automatic mode, the test stability in the automatic mode is guaranteed, and the problem is not easy to occur.
The implementation principle of the transfer case shift controller 6 safety control test system in the embodiment of the application is as follows: PLC adopts the point-to-point interactive mode of signal to carry out automatic control to gear shifting controller 6ECU, and whole test procedure has formed ECU and the direct closed-loop control who is detected the transfer case, through ECU direct drive gear shifting motor, strengthens the stability of test to can practice thrift the cost greatly.
Claims (10)
1. A safety control testing method for a transfer case gear shifting controller (6) is characterized by comprising the following steps:
the detected transfer case moves to a test area;
the PC (4) transmits signals to the PLC controller (5);
the PLC judges the sequence of the detected transfer case;
the PLC (5) is used for overlapping an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to point with an ECU of the gear shifting controller (6) and connecting POWER and IG trigger signals;
the gear shifting controller (6) is characterized in that an ECU transmits a control signal to the detected transfer case, and the detected transfer case controls a gear shifting motor to shift gears according to the received control signal;
the detected transfer case transmits a gear feedback signal to an ECU (electronic control unit) of a gear shifting controller (6);
the ECU of the gear shifting controller (6) calculates a test result;
and after the test is finished, the PLC (5) and the gear shifting controller (6) ECU are disconnected from all lap joints.
2. The transfer case shift controller (6) safety control testing method of claim 1, further including the steps of, after the tested transfer case is moved to a test zone:
the PC (4) carries out time sequence calculation, and when the time sequence reaches a test time sequence, the PC (4) transmits a time sequence signal to the PLC (5) and recalculates the time sequence;
the PLC (5) judges the series type of the currently detected transfer case, and the PLC (5) selects test contents according to the judged series type;
the PLC (5) is used for overlapping an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to point with an ECU of the gear shifting controller (6);
after a set time, switching on POWER;
switching on an IG trigger signal after a set time;
the gear shifting controller (6) is characterized in that an ECU transmits a control signal to the detected transfer case, and the detected transfer case controls a gear shifting motor to shift gears according to the received control signal;
the detected transfer case transmits a gear feedback signal to an ECU (electronic control unit) of a gear shifting controller (6);
the ECU of the gear shifting controller (6) calculates a test result;
and after the test is finished, the PLC (5) and the gear shifting controller (6) ECU are disconnected from all lap joints.
3. The transfer case shift controller (6) safety control testing method of claim 2, characterized in that:
and the set time in the trigger signals of POWER on after the set time and IG on after the set time is 1.5 seconds.
4. The transfer case shift controller (6) safety control testing method and system according to claim 2, characterized in that the PLC controller (5) judges a type of a transfer case series currently being tested, and after the PLC controller (5) selects a test content according to the judged type of the series, the method further comprises the following steps:
the PLC (5) judges the state of the current test board, and the next step is carried out after no abnormal signal linkage.
5. The transfer case shift controller (6) safety control testing method of claim 1, characterized in that:
defining a gate variable in the interaction information of the PLC (5) and the PC (4), wherein the gate variable comprises fixed frequency and count;
the PLC (5) transmits the counting value to the PC (4) in real time according to the program execution frequency;
the PC (4) feeds back the count value to the PLC controller (5);
the PLC (5) compares the received gatekeeper variable with the own gatekeeper variable;
and if the received gate variable is inconsistent with the own gate variable, interrupting the test process.
6. The transfer case shift controller (6) safety control testing method of claim 5, characterized in that: when the count value of the PLC (5) exceeds the maximum set value, all the count values are clear.
7. The transfer case shift controller (6) safety control testing method according to claim 1, characterized in that after the shift controller (6) ECU calculates the test result, the method further comprises the following steps:
when the test result is an internal fault in the gear shifting process, the ECU (6) transmits the test result to the PC (4), and the PC (4) processes fault information;
the PC (4) transmits the test result to the PLC controller (5), and the PLC controller (5) gives an alarm display and prompt according to the test result.
8. The transfer case shift controller (6) safety control testing method according to claim 7, characterized in that after the shift controller (6) ECU calculates the test result, the method further comprises the following steps:
when the test result is that the gear shifting peripheral test bench has faults, the ECU of the gear shifting controller (6) transmits the test result to the PLC (5), and the PLC (5) adjusts the control program according to the test result.
9. The utility model provides a transfer case shift controller (6) safety control test system which characterized in that: the gear shifting control system comprises a PC (4), a PLC (programmable logic controller) (5), a gear shifting controller (6), an ECU (electronic control unit), a host control system (1), a PLC control system (2) and an ECU control system (3);
the host control system (1) is arranged in the PC (4), and the host control system (1) transmits a starting signal to the PLC control system (2) and receives a test result transmitted by the ECU control system (3);
the PLC control system (2) is arranged in the PLC controller (5), after receiving the starting signal, the PLC control system (2) controls the PLC controller (5) to lap an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to an ECU of the SHIFT controller (6) and to switch on POWER and IG trigger signals, and the PLC control system (2) transmits test contents to the ECU control system (3);
the ECU control system (3) is arranged in an ECU of the gear shifting controller (6), the ECU control system (3) receives test contents and then controls a gear shifting motor of the transfer case to shift gears and receives gear feedback signals transmitted by the transfer case, the ECU control system (3) calculates test results according to the gear feedback signals and sends the test results to the host control system (1), and then all lap joints of the PLC controller (5) and the ECU of the gear shifting controller (6) are disconnected.
10. The transfer case shift controller (6) safety control testing system of claim 1, characterized in that: the host control system (1) comprises a manual control module (12), an automatic control module (13) and an information receiving module (11);
the manual control module (12) receives an input starting signal and transmits the starting signal to the PLC control system (2);
the automatic control module (13) is used for timing, and when the timing reaches a set value, a timing sequence signal is transmitted to the PLC control system (2);
the information receiving module (11) receives a test result;
the PLC control system (2) comprises a sequence storage module (23), a sequence detection module (24), a manual lap joint module (21) and an automatic lap joint module (22);
the sequence storage module (23) stores a plurality of kinds of sequence information;
the sequence detection module (24) detects the sequence of the detected transfer case, calls corresponding sequence information stored by the sequence storage module (23) according to the detected sequence, and transmits the sequence information to the ECU control system (3) by the sequence detection module (24);
the manual lapping module (21) receives a starting signal transmitted by the manual control module (12), and after the manual lapping module (21) receives the starting signal, the PLC (5) is controlled to lap an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to an ECU (electronic control unit) of the gear shifting controller (6), and a POWER trigger signal and an IG trigger signal are switched on;
the automatic lapping module (22) receives a time sequence signal transmitted by the automatic control module (13), after the automatic lapping module (22) receives the time sequence signal, the PLC (5) is controlled to lap an ENCODE feedback signal, a CLUTCH signal and a SHIFT signal point to an ECU (electronic control unit) of the gear shifting controller (6), after a set time, the POWER is switched on, and after the set time, an IG trigger signal is switched on;
the ECU control system (3) comprises a test control module (31), a feedback receiving module (32) and a result calculating module (33);
the test control module (31) receives the sequence information transmitted by the sequence detection module (24), and the test control module (31) controls the gear shifting motor of the detected transfer case to shift gears according to the received sequence information;
the feedback receiving module (32) receives a gear feedback signal transmitted by the detected transfer case;
and the result calculation module (33) calls the gear feedback signal of the feedback receiving module (32) and calculates a test result according to the gear feedback signal and the sequence information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110853453.9A CN113433930B (en) | 2021-07-27 | 2021-07-27 | Safety control testing method and system for transfer case gear shifting controller |
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|---|---|---|---|
| CN202110853453.9A CN113433930B (en) | 2021-07-27 | 2021-07-27 | Safety control testing method and system for transfer case gear shifting controller |
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| CN113433930A true CN113433930A (en) | 2021-09-24 |
| CN113433930B CN113433930B (en) | 2022-09-09 |
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| CN115793610A (en) * | 2022-11-30 | 2023-03-14 | 中国第一汽车股份有限公司 | Fault diagnosis method and device of transfer case assembly, processor and vehicle |
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