CN112065984A - Fault diagnosis method, device and equipment for gear selecting and shifting system of gearbox and storage medium - Google Patents
Fault diagnosis method, device and equipment for gear selecting and shifting system of gearbox and storage medium Download PDFInfo
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- CN112065984A CN112065984A CN202010853918.6A CN202010853918A CN112065984A CN 112065984 A CN112065984 A CN 112065984A CN 202010853918 A CN202010853918 A CN 202010853918A CN 112065984 A CN112065984 A CN 112065984A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
- F16H2061/126—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is the controller
- F16H2061/1268—Electric parts of the controller, e.g. a defect solenoid, wiring or microprocessor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H2061/2853—Electromagnetic solenoids
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention relates to the technical field of automobiles, and discloses a fault diagnosis method, a fault diagnosis device and a fault diagnosis storage medium for a gear selecting and shifting system of a gearbox, wherein the method comprises the following steps: the method comprises the steps of generating a first fault detection instruction and a second fault detection instruction respectively, obtaining a first fault detection result of the TCU through the first fault detection instruction, obtaining a second fault detection result of the electromagnetic drive module through the second fault detection instruction, and judging whether a gear selecting and shifting system of the gearbox is in fault or not according to the first fault detection result and the second fault detection result.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a fault diagnosis method, a fault diagnosis device and a fault diagnosis storage medium for a gear selecting and shifting system of a gearbox.
Background
At present, a plurality of automobiles are provided with a gearbox gear selecting and shifting control system, and gear shifting is carried out according to the state of the automobile through the gearbox gear selecting and shifting control system. However, the gearbox gear selecting and shifting control system is complex, the running conditions of the automobile are more, the fault condition of the gearbox gear selecting and shifting system is easy to occur, a user cannot easily know the fault condition, the gearbox gear selecting and shifting control system can be in the fault condition for a long time, and therefore electromagnets in the gearbox gear selecting and shifting control system are damaged or ablated.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a fault diagnosis method, a fault diagnosis device, equipment and a storage medium for a gear selecting and shifting system of a gearbox, and aims to solve the technical problem that in the prior art, the fault state of the gear selecting and shifting control system of the gearbox is not easy to know, so that an electromagnet in the gear selecting and shifting control system of the gearbox is easy to damage or ablate.
In order to achieve the above object, the present invention provides a method for diagnosing a fault of a gear selecting and shifting system of a transmission, wherein the gear selecting and shifting system of the transmission comprises: the method for diagnosing the fault of the gear selecting and shifting system of the gearbox comprises the following steps:
generating a first fault detection instruction and a second fault detection instruction when a fault diagnosis request is received;
sending the first fault detection instruction to the TCU, so that the TCU performs fault detection based on the first fault detection instruction to generate a first fault detection result, and feeding back the first fault detection result;
sending the second fault detection instruction to the electromagnetic driving module so that the electromagnetic driving module performs fault detection based on the second fault detection instruction to generate a second fault diagnosis result and feed back the second fault detection result;
and judging whether the gearbox gear selecting and shifting system is in fault or not according to the first fault detection result and the second fault detection result.
Preferably, the step of determining whether the gearbox gear selecting and shifting system is in fault according to the first fault detection result and the second fault detection result includes:
judging whether the TCU fails according to the first fault detection result, and judging whether the electromagnetic drive module fails according to the second fault detection result;
when the TCU is in fault and/or the electromagnetic drive module is in fault, judging that a gear selecting and shifting system of the gearbox is in fault;
and when the TCU is not in fault and the electromagnetic drive module is not in fault, judging that the gearbox gear selecting and shifting system is not in fault.
Preferably, after the step of determining that the gearbox gear selecting and shifting system is not in fault when the TCU is not in fault and the electromagnetic drive module is not in fault, the method further includes:
generating a first information detection instruction and a second information detection instruction;
sending the first information detection instruction to the TCU so that the TCU feeds back first detection information based on the first information detection instruction;
sending the second information detection instruction to the electromagnetic driving module so that the electromagnetic driving module feeds back second detection information based on the second information detection instruction;
extracting a second control duty from the second detection information;
judging whether a control instruction exists in the first detection information or not;
extracting a first control duty ratio from the first detection information when the control command exists in the first detection information;
and judging that the gearbox gear selecting and shifting system is in fault according to the first control duty ratio and the second control duty ratio.
Preferably, after the step of determining whether a control instruction exists in the first detection information, the method further includes:
when the control instruction does not exist in the first detection information, judging whether the second control duty ratio is a preset value or not;
and when the second control duty ratio is not the preset value, judging that the gear selecting and shifting system of the gearbox is in fault.
Preferably, the step of determining that the transmission gear shifting system is malfunctioning according to the first control duty cycle and the second control duty cycle comprises:
calculating a duty cycle difference value according to the first control duty cycle and the second control duty cycle;
and judging that the gear selecting and shifting system of the gearbox is in fault according to the duty ratio difference value.
Preferably, the step of determining that the gearbox gear selecting and shifting system is in fault according to the duty ratio difference comprises the following steps:
acquiring an absolute value of the duty ratio difference value;
comparing the absolute value with a preset difference threshold;
and when the absolute value is larger than the preset difference threshold value, judging that the gear selecting and shifting system of the gearbox is in fault.
Preferably, acquiring fault prompt information and a target regulation strategy;
displaying the fault prompt information to prompt a system fault;
and adjusting the first control duty ratio to a preset value according to the target regulation strategy.
In addition, in order to achieve the above object, the present invention further provides a failure diagnosis device for a gear selecting and shifting system of a transmission, including:
the diagnosis request module is used for generating a first fault detection instruction and a second fault detection instruction when receiving a fault diagnosis request;
the fault detection module is used for sending the first fault detection instruction to the TCU so that the TCU can perform fault detection based on the first fault detection instruction to generate a first fault detection result and feed back the first fault detection result;
the fault detection module is further configured to send the second fault detection instruction to the electromagnetic driving module, so that the electromagnetic driving module performs fault detection based on the second fault detection instruction to generate a second fault diagnosis result, and feeds back the second fault detection result;
and the result determining module is used for judging whether the gear selecting and shifting system of the gearbox is in fault or not according to the first fault detection result and the second fault detection result.
In addition, in order to achieve the above object, the present invention further provides a transmission gear selecting and shifting system fault diagnosis device, including: the system comprises a memory, a processor and a gearbox gear selecting and shifting system fault diagnosis program which is stored on the memory and can run on the processor, wherein the gearbox gear selecting and shifting system fault diagnosis program is configured with steps for realizing the gearbox gear selecting and shifting system fault diagnosis method.
In addition, to achieve the above object, the present invention further provides a storage medium, where the storage medium stores a transmission gear shifting system fault diagnosis program, and the transmission gear shifting system fault diagnosis program, when executed by a processor, implements the steps of the transmission gear shifting system fault diagnosis method as described above.
According to the fault diagnosis method for the gear selecting and shifting system of the gearbox, a first fault detection instruction and a second fault detection instruction are generated when a fault diagnosis request is received; sending the first fault detection instruction to the TCU, so that the TCU performs fault detection based on the first fault detection instruction to generate a first fault detection result, and feeding back the first fault detection result; sending the second fault detection instruction to the electromagnetic driving module so that the electromagnetic driving module performs fault detection based on the second fault detection instruction to generate a second fault diagnosis result and feed back the second fault detection result; and judging whether the gearbox gear selecting and shifting system is in fault or not according to the first fault detection result and the second fault detection result. The method comprises the steps of generating a first fault detection instruction and a second fault detection instruction respectively, obtaining a first fault detection result of the TCU through the first fault detection instruction, obtaining a second fault detection result of the electromagnetic drive module through the second fault detection instruction, and judging whether the gear selecting and shifting system of the gearbox is in fault or not.
Drawings
FIG. 1 is a schematic diagram of a gearbox gear selecting and shifting system fault diagnosis device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a transmission gear selection and shift system fault diagnosis method of the present invention;
FIG. 3 is a schematic flow chart illustrating a second embodiment of a transmission gear selection and shift system fault diagnosis method of the present invention;
fig. 4 is a functional block diagram of a first embodiment of the fault diagnosis device for the gear selecting and shifting system of the gearbox.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a transmission gear selecting and shifting system fault diagnosis device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the transmission gear selecting and shifting system fault diagnosis device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may comprise a Display screen (Display), an input unit such as keys, and the optional user interface 1003 may also comprise a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a non-volatile Memory (e.g., a magnetic disk Memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the apparatus shown in FIG. 1 does not constitute a limitation of the transmission shifter malfunction diagnostic apparatus and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a storage medium, may include an operating system, a network communication module, a user interface module, and a transmission gear selection system fault diagnostic program.
In the fault diagnosis device for the gear selecting and shifting system of the transmission shown in fig. 1, the network interface 1004 is mainly used for connecting an external network and performing data communication with other network devices; the user interface 1003 is mainly used for connecting to a user equipment and performing data communication with the user equipment; the device calls a gearbox gear selecting and shifting system fault diagnosis program stored in the memory 1005 through the processor 1001 and executes the gearbox gear selecting and shifting system fault diagnosis method provided by the embodiment of the invention.
Based on the hardware structure, the embodiment of the fault diagnosis method for the gear selecting and shifting system of the gearbox is provided.
Referring to fig. 2, fig. 2 is a flowchart illustrating a first embodiment of a method for diagnosing a malfunction of a gear selecting and shifting system of a transmission according to the present invention.
In a first embodiment, the transmission gear selection and shifting system comprises: the method for diagnosing the fault of the gear selecting and shifting system of the gearbox comprises the following steps:
in step S10, when the failure diagnosis request is received, a first failure detection command and a second failure detection command are generated.
It should be noted that the executing main body in this embodiment may be a failure diagnosis device for a gear shifting system of a transmission, and may also be other devices that can achieve the same or similar functions.
It should be noted that the failure diagnosis device of the gear selecting and shifting Control system of the transmission may be an Electronic Control Unit (ECU), and may also be other devices, which is not limited in this embodiment.
It should be noted that, the gearbox gear selecting and shifting system includes: the Transmission Control system comprises an ECU, an automatic Transmission Control Unit (TCU), an electromagnetic drive module, a gear selecting electromagnet and a gear shifting electromagnet. The ECU is used for acquiring the speed information and the accelerator information of the target vehicle, generating a gear shifting instruction according to the speed information and the accelerator information and sending the gear shifting instruction to the TCU; the TCU is used for determining a control command and a first control duty ratio according to the gear shifting command and sending the first control duty ratio to the electromagnetic driving module based on the control command; and the electromagnetic driving module drives the gear selecting and shifting electromagnet and the gear shifting electromagnet to shift according to the received second control duty ratio. The first control duty cycle is a control duty cycle generated and transmitted by the TCU, the second control duty cycle is a duty cycle actually received by the electromagnetic driving module, and the first control duty cycle and the second control duty cycle may be the same or different, which is not limited in this embodiment.
It should be understood that when a fault diagnosis request is received, which indicates that fault diagnosis needs to be performed on the gearbox gear selecting and shifting system at the time, a first fault detection command and a second fault detection command can be generated respectively, wherein the first fault detection command is used for obtaining a detection result of the TCU, and the second fault detection command is used for obtaining a detection result of the electromagnetic drive module.
Step S20, sending the first fault detection instruction to the TCU, so that the TCU performs fault detection based on the first fault detection instruction to generate a first fault detection result, and feeding back the first fault detection result.
It should be appreciated that the first fault detection instruction may be sent to the TCU for fault detection by the TCU based on the first fault detection instruction to generate a first fault detection result.
It can be understood that when the TCU has an open circuit or a short circuit, the fault information is generated, and the first fault detection result is generated according to the fault information; and generating non-fault information when the TCU is not in an open circuit or short circuit condition, and generating a first fault detection result according to the non-fault information.
Step S30, sending the second fault detection instruction to the electromagnetic driving module, so that the electromagnetic driving module performs fault detection based on the second fault detection instruction to generate a second fault diagnosis result, and feeding back the second fault detection result.
It should be appreciated that the second fault detection instruction may be sent to the electromagnetic drive module, and fault detection may be performed by the electromagnetic drive module based on the second fault detection instruction to generate a second fault detection result.
It can be understood that when the electromagnetic driving module is open or short-circuited, fault information is generated, and a second fault detection result is generated according to the fault information; and generating non-fault information when the electromagnetic drive is not in the open circuit or short circuit condition, and generating a second fault detection result according to the non-fault information.
And step S40, judging whether the gear selecting and shifting system of the gearbox is in fault according to the first fault detection result and the second fault detection result.
It should be understood that after receiving the first fault detection result fed back by the TCU and the second fault detection result fed back by the electromagnetic drive module, whether the gearbox gear selecting and shifting system is faulty is determined according to the first fault detection result and the second fault detection result.
It will be appreciated that a transmission shift selection system can be determined to be malfunctioning when at least one of the TCU and the electromagnetic drive module is malfunctioning.
In a specific implementation, for example, when the TCU fails and the electromagnetic drive module does not fail, it is determined that the transmission gear selecting and shifting system fails; when the TCU is not in fault and the electromagnetic driving module is in fault, judging that a gear selecting and shifting system of the gearbox is in fault; and when the TCU fails and the electromagnetic drive module fails, judging that the gear selecting and shifting system of the gearbox fails. Therefore, in all three cases, the fault of the gear selecting and shifting system of the gearbox can be judged.
In this embodiment, a first fault detection instruction and a second fault detection instruction are generated respectively, a first fault detection result of the TCU is obtained through the first fault detection instruction, and a second fault detection result of the electromagnetic drive module is obtained through the second fault detection instruction to determine whether the gearbox gear selecting and shifting system is faulty or not, so that the defect that an electromagnet in the gearbox gear selecting and shifting control system is easily damaged or ablated due to the fact that the fault state of the gearbox gear selecting and shifting control system is not easily known in the prior art is overcome, and the fault diagnosis accuracy of the gearbox gear selecting and shifting system is improved.
In an embodiment, as shown in fig. 3, a second embodiment of the fault diagnosis method for a gear selecting and shifting system of a transmission according to the present invention is proposed based on the first embodiment, and the step S40 includes:
step S401, judging whether the TCU has a fault according to the first fault detection result, and judging whether the electromagnetic drive module has a fault according to the second fault detection result.
It should be understood that, since the first fault detection result is fed back after the TCU performs fault detection, and the second fault detection result is fed back after the electromagnetic driving module performs fault detection, whether the TCU fails or not can be determined according to the first fault detection result, and whether the electromagnetic driving module fails or not can be determined according to the second fault detection result.
And S402, when the TCU is in fault and/or the electromagnetic drive module is in fault, judging that the gear selecting and shifting system of the gearbox is in fault.
It should be appreciated that the transmission gear selection and shift system is determined to be malfunctioning when the TCU is malfunctioning and/or the solenoid drive module is malfunctioning. Namely, one of the three conditions listed above, it is determined that the transmission gear selecting and shifting system is in failure.
And S403, when the TCU is not in fault and the electromagnetic drive module is not in fault, judging that the gear selecting and shifting system of the gearbox is not in fault.
It should be appreciated that the select shift system is determined to be malfunctioning when the TCU is malfunctioning and the electromagnetic drive module is not malfunctioning, i.e., not the three conditions listed above.
In an embodiment, since there may be a TCU and the transmission gear selecting and shifting control system is not faulty, but the failure of the transmission gear selecting and shifting system due to the failure of information transmission may further be detected to improve the accuracy of fault diagnosis, after step S403, the method further includes:
generating a first information detection instruction and a second information detection instruction; sending the first information detection instruction to the TCU so that the TCU feeds back first detection information based on the first information detection instruction; sending the second information detection instruction to the electromagnetic driving module so that the electromagnetic driving module feeds back second detection information based on the second information detection instruction; extracting a second control duty from the second detection information; judging whether a control instruction exists in the first detection information or not; extracting a first control duty ratio from the first detection information when the control command exists in the first detection information; and judging that the gearbox gear selecting and shifting system is in fault according to the first control duty ratio and the second control duty ratio.
It should be understood that a first information detection instruction and a second information detection instruction may be generated, and sent to the TCU and the electromagnetic drive module, respectively, to obtain the first detection information and the second detection information.
It should be understood that the first information detection instruction is sent to the TCU, and then the TCU detects the state of itself based on the first information detection instruction, and generates and feeds back the first detection information. The TCU detects a first control duty ratio, and when the TCU detects a control command, first detection information is generated according to the first control duty ratio and the control command; and when the TCU does not detect the control instruction, generating first detection information according to the control instruction.
It should be understood that the second information detection instruction is sent to the electromagnetic driving module, and then the electromagnetic driving module detects the state of the electromagnetic driving module based on the second information detection instruction to determine the second control duty ratio, and generates the second detection information according to the second control duty ratio.
It can be understood that, when the first detection information fed back by the TCU and the second detection information fed back by the electromagnetic driving module are received, the second control duty ratio may be extracted from the second detection information, and it may be determined whether a control instruction exists in the first detection information. When the control instruction exists in the first detection information, it is described that the TCU sends the control instruction to the electromagnetic drive module at this time, and therefore, it is necessary to determine whether the transmission gear selecting and shifting system is faulty or not by using the first control duty ratio sent by the TCU and the second control duty ratio actually received by the electromagnetic drive module.
In an embodiment, after the step of determining whether a control instruction exists in the first detection information, the method further includes:
when the control instruction does not exist in the first detection information, judging whether the second control duty ratio is a preset value or not; and when the second control duty ratio is not the preset value, judging that the gear selecting and shifting system of the gearbox is in fault.
It should be noted that, in the present embodiment, the preset value may be 0. When the control instruction does not exist in the first detection information, the TCU does not send a command for controlling the electromagnet to act, and if the second control duty ratio actually received by the electromagnetic driving module is 0 at the moment, the TCU is normal; and if the second control duty ratio actually received by the electromagnetic driving module at the moment is not 0, the abnormality is indicated, and if the duration of the abnormal state exceeds a preset time threshold, the fault of the gear selecting and shifting system of the gearbox is judged. The preset time threshold may be set by a user according to an actual situation, for example, may be 10S, 30S, and the like, and may also be other time values, which is not limited in this embodiment.
It should be understood that, because the transmission gear selecting and shifting system is provided with the gear selecting electromagnet and the gear shifting electromagnet, the control commands comprise a gear selecting control command and a gear shifting control command, the first control duty ratio comprises a first gear selecting duty ratio and a first gear shifting duty ratio, and the second control duty ratio comprises a second gear selecting duty ratio and a second gear shifting duty ratio.
Therefore, if no gear selection control instruction exists, the second gear selection duty ratio is not 0, and after a period of time, the fault of the gear selecting and shifting system of the gearbox is judged; and if no gear shifting control instruction exists, the second gear shifting duty ratio is not 0, and after a period of time, the gear selecting and shifting system of the gearbox is judged to be in fault.
In an embodiment, in order to improve the accuracy of fault diagnosis, when a control command exists, a further determination may be made according to a first control duty cycle and a second control duty cycle, and the step of determining that the gearbox gear selecting and shifting system is faulty according to the first control duty cycle and the second control duty cycle includes:
calculating a duty ratio difference value according to the first control duty ratio and the second control duty ratio, and acquiring an absolute value of the duty ratio difference value; comparing the absolute value with a preset difference threshold; and when the absolute value is larger than the preset difference threshold value, judging that the gear selecting and shifting system of the gearbox is in fault.
It should be noted that the preset difference threshold may be preset by a user according to an actual situation, and may be any threshold, which is not limited in this embodiment.
It should be understood that the duty ratio difference value may be calculated according to the second control duty ratio and the second control duty ratio, then the absolute value of the duty ratio difference value is obtained, the absolute value is compared with the preset difference threshold value, and when the absolute value is greater than the preset difference threshold value, it is determined that the gearbox gear selecting and shifting system is in fault; and when the absolute value is not greater than the preset difference threshold value, judging that the gear selecting and shifting system of the gearbox is not in fault.
Further, a gear selection duty ratio difference value can be calculated according to the first gear selection duty ratio and the second gear selection duty ratio, and when the absolute value of the gear selection duty ratio difference value reaches a certain threshold value and lasts for a period of time, it is judged that the gear selection and shifting system of the gearbox breaks down; and calculating a gear shifting duty ratio difference value according to the first gear shifting duty ratio and the second gear shifting duty ratio, and judging that the gear shifting system of the gearbox breaks down when the absolute value of the gear shifting duty ratio difference value reaches a certain threshold value and lasts for a period of time.
In an embodiment, in order to prompt a user of a fault information in time and adjust a fault state, after the step of determining that the gearbox gear selecting and shifting system is faulty according to the first control duty cycle and the second control duty cycle, the method further includes:
acquiring fault prompt information and a target regulation strategy; displaying the fault prompt information to prompt a system fault; and adjusting the first control duty ratio to a preset value according to the target regulation strategy.
It should be appreciated that after determining that the transmission gear selection and shift system is malfunctioning, the user is alerted to the malfunctioning state and adjustments to the malfunctioning state are made. The fault prompt information and the target adjustment strategy can be obtained, wherein the fault prompt information and the target adjustment strategy can be preset and stored in the database, and can also be input in real time, which is not limited in this embodiment.
It should be understood that the fault prompting message may be displayed in a voice or text or picture manner, so as to prompt the system fault, and the first control duty ratio and the second control duty ratio are adjusted to 0 according to the target control strategy.
In this embodiment, whether the TCU malfunctions is determined according to the first fault detection result, and whether the electromagnetic drive module malfunctions is determined according to the second fault detection result; when the TCU is in fault and/or the electromagnetic drive module is in fault, judging that a gear selecting and shifting system of the gearbox is in fault; and when the TCU is not in fault and the electromagnetic drive module is not in fault, judging that the gearbox gear selecting and shifting system is not in fault. Therefore, whether the gearbox gear selecting and shifting system breaks down or not is judged according to the first fault detection result and the second fault detection result, and accuracy and efficiency of fault diagnosis of the gearbox gear selecting and shifting system are improved.
In addition, an embodiment of the present invention further provides a storage medium, where a transmission gear shifting system fault diagnosis program is stored on the storage medium, and when executed by a processor, the transmission gear shifting system fault diagnosis program implements the steps of the transmission gear shifting system fault diagnosis method described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
In addition, referring to fig. 4, an embodiment of the present invention further provides a failure diagnosis device for a transmission gear selecting and shifting system, where the failure diagnosis device for a transmission gear selecting and shifting system includes:
the diagnosis request module 10 is configured to generate a first fault detection instruction and a second fault detection instruction when receiving a fault diagnosis request.
It should be noted that, the gearbox gear selecting and shifting system includes: the Transmission Control system comprises an ECU, an automatic Transmission Control Unit (TCU), an electromagnetic drive module, a gear selecting electromagnet and a gear shifting electromagnet. The ECU is used for acquiring the speed information and the accelerator information of the target vehicle, generating a gear shifting instruction according to the speed information and the accelerator information and sending the gear shifting instruction to the TCU; the TCU is used for determining a control command and a first control duty ratio according to the gear shifting command and sending the first control duty ratio to the electromagnetic driving module based on the control command; and the electromagnetic driving module drives the gear selecting and shifting electromagnet and the gear shifting electromagnet to shift according to the received second control duty ratio. The first control duty cycle is a control duty cycle generated and transmitted by the TCU, the second control duty cycle is a duty cycle actually received by the electromagnetic driving module, and the first control duty cycle and the second control duty cycle may be the same or different, which is not limited in this embodiment.
It should be understood that when a fault diagnosis request is received, which indicates that fault diagnosis needs to be performed on the gearbox gear selecting and shifting system at the time, a first fault detection command and a second fault detection command can be generated respectively, wherein the first fault detection command is used for obtaining a detection result of the TCU, and the second fault detection command is used for obtaining a detection result of the electromagnetic drive module.
And the fault detection module 20 is configured to send the first fault detection instruction to the TCU, so that the TCU performs fault detection based on the first fault detection instruction to generate a first fault detection result, and feeds back the first fault detection result.
It should be appreciated that the first fault detection instruction may be sent to the TCU for fault detection by the TCU based on the first fault detection instruction to generate a first fault detection result.
It can be understood that when the TCU has an open circuit or a short circuit, the fault information is generated, and the first fault detection result is generated according to the fault information; and generating non-fault information when the TCU is not in an open circuit or short circuit condition, and generating a first fault detection result according to the non-fault information.
The fault detection module 20 is further configured to send the second fault detection instruction to the electromagnetic driving module, so that the electromagnetic driving module performs fault detection based on the second fault detection instruction to generate a second fault diagnosis result, and feeds back the second fault detection result.
It should be appreciated that the second fault detection instruction may be sent to the electromagnetic drive module, and fault detection may be performed by the electromagnetic drive module based on the second fault detection instruction to generate a second fault detection result.
It can be understood that when the electromagnetic driving module is open or short-circuited, fault information is generated, and a second fault detection result is generated according to the fault information; and generating non-fault information when the electromagnetic drive is not in the open circuit or short circuit condition, and generating a second fault detection result according to the non-fault information.
And the result determining module 30 is configured to determine whether the gearbox gear selecting and shifting system is in fault according to the first fault detection result and the second fault detection result.
It should be understood that after receiving the first fault detection result fed back by the TCU and the second fault detection result fed back by the electromagnetic drive module, whether the gearbox gear selecting and shifting system is faulty is determined according to the first fault detection result and the second fault detection result.
It will be appreciated that a transmission shift selection system can be determined to be malfunctioning when at least one of the TCU and the electromagnetic drive module is malfunctioning.
In a specific implementation, for example, when the TCU fails and the electromagnetic drive module does not fail, it is determined that the transmission gear selecting and shifting system fails; when the TCU is not in fault and the electromagnetic driving module is in fault, judging that a gear selecting and shifting system of the gearbox is in fault; and when the TCU fails and the electromagnetic drive module fails, judging that the gear selecting and shifting system of the gearbox fails. Therefore, in all three cases, the fault of the gear selecting and shifting system of the gearbox can be judged.
In this embodiment, a first fault detection instruction and a second fault detection instruction are generated respectively, a first fault detection result of the TCU is obtained through the first fault detection instruction, and a second fault detection result of the electromagnetic drive module is obtained through the second fault detection instruction to determine whether the gearbox gear selecting and shifting system is faulty or not, so that the defect that an electromagnet in the gearbox gear selecting and shifting control system is easily damaged or ablated due to the fact that the fault state of the gearbox gear selecting and shifting control system is not easily known in the prior art is overcome, and the fault diagnosis accuracy of the gearbox gear selecting and shifting system is improved.
In an embodiment, the result determining module 30 is further configured to determine whether the TCU fails according to the first failure detection result, and determine whether the electromagnetic driving module fails according to the second failure detection result; when the TCU is in fault and/or the electromagnetic drive module is in fault, judging that a gear selecting and shifting system of the gearbox is in fault; and when the TCU is not in fault and the electromagnetic drive module is not in fault, judging that the gearbox gear selecting and shifting system is not in fault.
In an embodiment, the result determining module 30 is further configured to generate a first information detection instruction and a second information detection instruction; sending the first information detection instruction to the TCU so that the TCU feeds back first detection information based on the first information detection instruction; sending the second information detection instruction to the electromagnetic driving module so that the electromagnetic driving module feeds back second detection information based on the second information detection instruction; extracting a second control duty from the second detection information; judging whether a control instruction exists in the first detection information or not; extracting a first control duty ratio from the first detection information when the control command exists in the first detection information; and judging that the gearbox gear selecting and shifting system is in fault according to the first control duty ratio and the second control duty ratio.
In an embodiment, the result determining module 30 is further configured to determine whether the second control duty ratio is a preset value when the control instruction does not exist in the first detection information; and when the second control duty ratio is not the preset value, judging that the gear selecting and shifting system of the gearbox is in fault.
In an embodiment, the result determining module 30 is further configured to calculate a duty ratio difference according to the first control duty ratio and the second control duty ratio; and judging that the gear selecting and shifting system of the gearbox is in fault according to the duty ratio difference value.
In an embodiment, the result determining module 30 is further configured to obtain an absolute value of the duty ratio difference; comparing the absolute value with a preset difference threshold; and when the absolute value is larger than the preset difference threshold value, judging that the gear selecting and shifting system of the gearbox is in fault.
In an embodiment, the result determining module 30 is further configured to obtain fault notification information and a target adjustment policy; displaying the fault prompt information to prompt a system fault; and adjusting the first control duty ratio to a preset value according to the target regulation strategy.
Other embodiments or specific implementation methods of the fault diagnosis device for the gear selecting and shifting system of the gearbox according to the invention can refer to the embodiments of the above methods, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a computer readable storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling an intelligent device (such as a mobile phone, an estimator, a gearbox gear-shifting system fault diagnosis device, an air conditioner, or a network gearbox gear-shifting system fault diagnosis device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A fault diagnosis method for a gear selecting and shifting system of a transmission is characterized in that the gear selecting and shifting system of the transmission comprises the following steps: the method for diagnosing the fault of the gear selecting and shifting system of the gearbox comprises the following steps:
generating a first fault detection instruction and a second fault detection instruction when a fault diagnosis request is received;
sending the first fault detection instruction to the TCU, so that the TCU performs fault detection based on the first fault detection instruction to generate a first fault detection result, and feeding back the first fault detection result;
sending the second fault detection instruction to the electromagnetic driving module so that the electromagnetic driving module performs fault detection based on the second fault detection instruction to generate a second fault diagnosis result and feed back the second fault detection result;
and judging whether the gearbox gear selecting and shifting system is in fault or not according to the first fault detection result and the second fault detection result.
2. The method for diagnosing a malfunction of a transmission gear shifting system according to claim 1, wherein the step of determining whether the transmission gear shifting system is malfunctioning based on the first malfunction detection result and the second malfunction detection result includes:
judging whether the TCU fails according to the first fault detection result, and judging whether the electromagnetic drive module fails according to the second fault detection result;
when the TCU is in fault and/or the electromagnetic drive module is in fault, judging that a gear selecting and shifting system of the gearbox is in fault;
and when the TCU is not in fault and the electromagnetic drive module is not in fault, judging that the gearbox gear selecting and shifting system is not in fault.
3. The method for diagnosing a malfunction of a transmission gear shifting system according to claim 2, wherein the step of determining that the transmission gear shifting system is not malfunctioning when the TCU is not malfunctioning and the electromagnetic drive module is not malfunctioning further comprises:
generating a first information detection instruction and a second information detection instruction;
sending the first information detection instruction to the TCU so that the TCU feeds back first detection information based on the first information detection instruction;
sending the second information detection instruction to the electromagnetic driving module so that the electromagnetic driving module feeds back second detection information based on the second information detection instruction;
extracting a second control duty from the second detection information;
judging whether a control instruction exists in the first detection information or not;
extracting a first control duty ratio from the first detection information when the control command exists in the first detection information;
and judging that the gearbox gear selecting and shifting system is in fault according to the first control duty ratio and the second control duty ratio.
4. The method of diagnosing a transmission shift selection system fault as recited in claim 3 wherein said step of determining if a control command is present in said first sensed information further comprises:
when the control instruction does not exist in the first detection information, judging whether the second control duty ratio is a preset value or not;
and when the second control duty ratio is not the preset value, judging that the gear selecting and shifting system of the gearbox is in fault.
5. The transmission gear selection system malfunction diagnostic method according to claim 3, wherein the step of determining that the transmission gear selection system malfunctions based on the first control duty cycle and the second control duty cycle comprises:
calculating a duty cycle difference value according to the first control duty cycle and the second control duty cycle;
and judging that the gear selecting and shifting system of the gearbox is in fault according to the duty ratio difference value.
6. The method of claim 5, wherein the step of determining that the transmission gear selection system is faulty based on the duty cycle difference comprises:
acquiring an absolute value of the duty ratio difference value;
comparing the absolute value with a preset difference threshold;
and when the absolute value is larger than the preset difference threshold value, judging that the gear selecting and shifting system of the gearbox is in fault.
7. The transmission gear selection system malfunction diagnostic method according to claim 3, wherein the step of determining that the transmission gear selection system malfunctions based on the first control duty cycle and the second control duty cycle further comprises, after the step of determining that the transmission gear selection system malfunctions:
acquiring fault prompt information and a target regulation strategy;
displaying the fault prompt information to prompt a system fault;
and adjusting the first control duty ratio to a preset value according to the target regulation strategy.
8. A transmission gear shifting system fault diagnostic apparatus, the transmission gear shifting system comprising: automatic transmission control unit TCU and electromagnetic drive module, the gearbox selects shift system failure diagnosis device includes:
the diagnosis request module is used for generating a first fault detection instruction and a second fault detection instruction when receiving a fault diagnosis request;
the fault detection module is used for sending the first fault detection instruction to the TCU so that the TCU can perform fault detection based on the first fault detection instruction to generate a first fault detection result and feed back the first fault detection result;
the fault detection module is further configured to send the second fault detection instruction to the electromagnetic driving module, so that the electromagnetic driving module performs fault detection based on the second fault detection instruction to generate a second fault diagnosis result, and feeds back the second fault detection result;
and the result determining module is used for judging whether the gear selecting and shifting system of the gearbox is in fault or not according to the first fault detection result and the second fault detection result.
9. A transmission gear shifting system fault diagnostic apparatus, characterized by comprising: a memory, a processor and a transmission gear selection system fault diagnosis program stored on the memory and executable on the processor, the transmission gear selection system fault diagnosis program being configured with steps to implement a transmission gear selection system fault diagnosis method according to any one of claims 1 to 7.
10. A storage medium having a transmission gear selection system fault diagnostic program stored thereon, the transmission gear selection system fault diagnostic program when executed by a processor implementing the steps of the transmission gear selection system fault diagnostic method of any one of claims 1 to 7.
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Effective date of registration: 20221021 Address after: 237000 Gao Cheng East Road, Lu'an Economic Development Zone, Anhui Patentee after: ANHUI XINGRUI GEAR-TRANSMISSION Co.,Ltd. Address before: No.99, Ziyun Road, economic and Technological Development Zone, Hefei City, Anhui Province Patentee before: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. |
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