CN111006011B - Transmission correction method and device and motor vehicle - Google Patents
Transmission correction method and device and motor vehicle Download PDFInfo
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- CN111006011B CN111006011B CN201811168050.5A CN201811168050A CN111006011B CN 111006011 B CN111006011 B CN 111006011B CN 201811168050 A CN201811168050 A CN 201811168050A CN 111006011 B CN111006011 B CN 111006011B
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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
- F16H61/02—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 characterised by the signals used
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of 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
- F16H61/12—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
- F16H2061/1284—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 a sensor
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- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The application discloses a speed changer correction method, a speed changer correction device and a motor vehicle. By replacing the rotating speed of the corresponding transmission shaft of the speed sensor with a fault, the vehicle can stably run when the speed sensor is in fault, and the reliability of the transmission control system is improved.
Description
Technical Field
The application relates to the field of transmission control, in particular to a transmission correction method and device and a motor vehicle.
Background
Compared with the traditional automatic gearbox, the double-clutch transmission has the advantages that the power is not interrupted in the gear shifting process, the production process of a manual transmission can be inherited, the economy is good, and the like, so that the double-clutch transmission draws high attention of various domestic automobile manufacturers, and the double-clutch transmission is an important direction for the development of the domestic automatic transmission. The core of the dual clutch automatic transmission is control software of the dual clutch automatic transmission, and the key to the control software is the reliability of input signals of a control unit. The double-clutch transmission is provided with two input shaft speed sensors and an output shaft speed sensor, and rotating speed signals obtained by the three shaft speed sensors are used for controlling core contents of control software such as smooth and quick combination, vehicle speed judgment and verification, vehicle running direction judgment and the like of the clutch. When the sensor fails, the transmission will fail to operate. Meanwhile, for some fault information which cannot be sensed by the sensor, a control unit (TCU) always trusts a sensor signal, which also causes the reduction of the control effect of the transmission and the reduction of the satisfaction degree of a driver.
Disclosure of Invention
In order to overcome the above-mentioned deficiencies in the prior art, the present application aims to provide a transmission correction method, characterized by being applied to a control unit of a transmission including a propeller shaft and a speed sensor corresponding to the propeller shaft, the method comprising:
detecting whether a speed sensor of a target transmission shaft has a fault;
and if the speed sensor of the target transmission shaft fails, calculating the rotating speed of the target transmission shaft according to the rotating speed acquired by the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed.
Optionally, the control unit of the transmission continuously records the rotating speed acquired by each speed sensor; before the step of calculating the rotating speed of the target transmission shaft according to the rotating speed collected by the speed sensor of the transmission shaft related to the target transmission shaft and/or the current vehicle speed if the speed sensor of the target transmission shaft fails, the method comprises the following steps:
detecting whether the target transmission shaft is in a neutral gear state;
if the target transmission shaft is in a neutral state, using the rotating speed acquired and stored before the speed sensor of the target transmission shaft breaks down as the current rotating speed of the target transmission shaft;
optionally, the step of calculating the rotation speed of the target transmission shaft according to the rotation speed collected by the speed sensor of the other transmission shaft related to the target transmission shaft and/or the current vehicle speed includes:
and selecting the rotating speed obtained by the corresponding speed sensor of the related transmission shaft as a reference rotating speed according to a preset rule, and calculating the rotating speed of the target transmission shaft according to a preset proportional relation through the reference rotating speed.
Optionally, the step of detecting whether the speed sensor of the target transmission shaft is out of order comprises:
calculating the speed ratio between the rotating speeds acquired by the speed sensor of the target transmission shaft and the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed;
and when the speed proportion is detected to be not in accordance with the preset proportion relation, judging whether the speed sensor of the target transmission shaft is in fault or not.
Optionally, the control unit prestores a plurality of combinations of other transmission shafts related to the target transmission shaft and/or the current vehicle speed, and the plurality of combinations are configured with corresponding priorities;
the step of judging whether the speed sensor of the target transmission shaft breaks down or not according to whether the ratio between the rotating speed acquired by the speed sensor of the target transmission shaft and the speed sensor of the transmission shaft related to the target transmission shaft and/or the current vehicle speed meets a preset proportional relationship or not comprises the following steps:
selecting a combination with the highest priority from the combinations of speed sensors which are not detected to have faults;
and judging whether the speed sensor of the target transmission shaft fails or not according to the proportional relation of the rotating speed and/or the vehicle speed of the transmission shaft in the combination with the highest priority.
Optionally, the speed sensor includes a failure detection device, and the step of detecting whether the speed sensor of the target transmission shaft fails includes:
and if a fault indication signal sent by the fault detection device is received, the state of the speed sensor sending the fault indication signal is marked as a fault state, and a fault prompt signal is sent to remind a user.
Optionally, the method for detecting whether the speed sensor of the target transmission shaft is faulty further includes:
and sending a fault reminding signal to remind a user when the target sensor is detected to be in fault.
Another object of the present application is to provide a transmission correction apparatus applied to a control unit of a transmission including a propeller shaft and a speed sensor corresponding to the propeller shaft; the transmission correction device comprises a fault detection module and a fault correction module;
the fault detection module is used for detecting whether a speed sensor of the target transmission shaft is in fault;
the fault correction module is used for calculating the rotating speed of the target transmission shaft according to the rotating speed acquired by the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed when the speed sensor of the target transmission shaft has a fault.
Optionally, the fault correction module detects whether the speed sensor of the target transmission shaft is faulty by:
calculating the speed ratio between the rotating speeds acquired by the speed sensor of the target transmission shaft and the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed;
and when the speed proportion is detected to be not in accordance with the preset proportion relation, judging whether the speed sensor of the target transmission shaft is in fault or not.
Another object of the present application is to provide a motor vehicle, characterized in that it comprises a transmission and a control unit of the transmission, the transmission comprising a transmission shaft and a speed sensor corresponding to the transmission shaft; the control unit of the transmission is configured to:
detecting whether a speed sensor of a target transmission shaft has a fault;
and if the speed sensor of the target transmission shaft fails, calculating the rotating speed of the target transmission shaft according to the rotating speed acquired by the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed.
Compared with the prior art, the method has the following beneficial effects:
according to the speed changer correction method, the speed changer correction device and the motor vehicle, whether a speed sensor of a transmission shaft of the speed changer breaks down or not is detected, and if the speed sensor breaks down, the rotating speed of the transmission shaft corresponding to the broken-down sensor is calculated according to the rotating speed of the transmission shaft related to the broken-down speed sensor and/or the current vehicle speed. By replacing the rotating speed of the corresponding transmission shaft of the speed sensor with a fault, the vehicle can stably run when the speed sensor is in fault, and the reliability of the transmission control system is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a fault clearing system according to an embodiment of the present application;
FIG. 2 is a flowchart illustrating steps in a transmission correction method provided in accordance with an embodiment of the present application;
FIG. 3 is a table of priority combinations provided by an embodiment of the present application;
fig. 4 is a functional block diagram of a transmission correction device according to an embodiment of the present application.
Icon: 200-a fault clearing system; 201-a processor; 202-a machine-readable storage medium; 203-speed sensor; 500-transmission correction means; 501-fault detection module; 502-fault correction module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description of the present application, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The embodiment provides a transmission correction method applied to a control unit of a transmission, wherein the transmission comprises a transmission shaft and a speed sensor 203 corresponding to the transmission shaft. The speed sensor 203 is used for detecting the rotating speed of the transmission shaft. The transmission correction method is used to correct a malfunction of the speed sensor 203 when the malfunction occurs.
The transmission is a dual clutch transmission, and compared with a traditional transmission, the dual clutch transmission is provided with two clutch devices, one clutch device is responsible for odd gears through a first input transmission shaft, and the other clutch device controls even gears through a second input transmission shaft. The speed changer drives the output transmission shaft to output the power of the power device through the gear. When the double clutch transmission is operated, one set of gears is engaged, and when a gear shift is approached, the gears of the next set of gears are preselected, but the clutch is in a clutch state. When the double clutch transmission is in gear shifting operation, one clutch separates the gear in use, and the engagement of the other clutch is preselected, so that a minimum group of gears is ensured to output power during the whole gear shifting period, and therefore, the condition of power interruption can not occur.
Referring to fig. 1, fig. 1 is a fault clearing system 200 of the present application, which includes a speed sensor 203 and a control unit for controlling the speed sensor 203, the control unit including a processor 201 and a machine-readable storage medium 202. The machine-readable storage medium 202, the processor 201, and the speed sensor 203 are in direct or indirect electrical communication with one another to facilitate data transfer or interaction. For example, the components may be electrically connected to each other through one or more communication buses or signal lines to transmit data signals or control signals.
The machine-readable storage medium 202 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The machine-readable storage medium 202 is used for storing a program, and the processor 201 executes the program after receiving an execution instruction.
The processor 201 may be an integrated circuit chip having signal processing capabilities. The Processor 201 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It is to be noted that, in the present embodiment, the control unit may be exclusively used for executing a control unit that corrects a malfunction of the speed sensor 203; the control unit may also be a control unit of a vehicle control system having the speed sensor 203 failure correction logic function.
Referring to fig. 2, fig. 2 shows a method applied to the fault clearing system 200 shown in fig. 1 according to the present embodiment, and the steps included in the method are described in detail below.
In step S100, it is detected whether the speed sensor 203 of the target propeller shaft is malfunctioning.
Optionally, in a specific implementation manner of this embodiment, the speed sensor 203 includes a fault detection device. The failure detection means is for detecting whether the speed sensor 203 itself has failed. If the speed sensor 203 fails, the failure detection device sends out a failure indication signal.
If the control unit of the transmission detects that one of the speed sensors 203 is out of order, the out-of-order sensor is marked as a faulty device, and a fault reminding signal is sent to a user. The malfunction alerting signal is used to alert a user to repair or replace the malfunctioning speed sensor 203.
Optionally, in another specific implementation manner of this embodiment, whether the speed sensor 203 of the target transmission shaft fails may be determined according to the rotation speed of the transmission shaft related to the target transmission shaft and/or the current vehicle speed.
Specifically, the control unit of the transmission is pre-stored with a plurality of combinations of other propeller shafts and/or current vehicle speed associated with the target propeller shaft. And according to the stability of the rotating speed transmission ratio between the target transmission shaft and other transmission shafts related to the target transmission shaft and/or the current vehicle speed, the control unit of the transmission prestores corresponding priorities for the plurality of combinations.
The control unit of the transmission preferentially selects the combination with the highest priority as the combination for judging whether the speed sensor 203 of the target propeller shaft is faulty or not among the speed sensors 203 in which the occurrence of the fault is not detected.
Specifically, the control unit of the transmission determines whether a propeller shaft corresponding to the target propeller shaft is faulty from a high priority combination. If the speed sensor 203 corresponding to a certain transmission shaft in the high-priority combination is known to be in failure, the combination of the secondary priorities is used for judging whether the speed sensor 203 corresponding to the target transmission shaft is in failure.
For example, in the present aspect, the first input drive shaft, the second input drive shaft, the output shaft, and the current vehicle speed are divided into priority levels as described in fig. 3, according to the stability of the rotational speed gear ratio between the target drive shaft and the other drive shaft associated with the target drive shaft and/or the current vehicle speed.
Optionally, in the combination, the number of rotation speed values related to the rotation speed of the target transmission shaft is at least two. The control unit of the transmission acquires the rotating speed of the transmission shaft through the speed sensor 203 in real time. The control unit of the transmission calculates a ratio between the rotational speeds and/or the current vehicle speed acquired by the speed sensor 203 of the target propeller shaft and the speed sensor 203 of the propeller shaft with which the target propeller shaft is associated. And the transmission control unit judges whether the speed sensor 203 of the target transmission shaft has a fault according to whether the proportional value meets a preset proportional relation.
For example, the first input drive shaft, the second input drive shaft and the output shaft combination relationship in the high priority combination in fig. 3 is selected. The control unit of the transmission sequentially calculates a first rotating speed ratio of the first transmission shaft and the second transmission shaft, a second rotating speed ratio of the first transmission shaft and the output shaft, and a second rotating speed ratio of the second transmission shaft and the output shaft. The control unit of the transmission compares the first, second and third speed ratios with a preset speed ratio. If the control unit of the transmission finds that the first rotation speed ratio does not satisfy the preset rotation speed ratio, the second rotation speed ratio does not satisfy the preset rotation speed ratio, and the third rotation speed ratio satisfies the preset ratio rotation speed ratio, it may be determined that the speed sensor 203 corresponding to the first transmission shaft has a fault.
And step S200, if the speed sensor of the target transmission shaft fails, calculating the rotating speed of the target transmission shaft according to the rotating speed and/or the current vehicle speed acquired by the speed sensors 203 of other transmission shafts related to the target transmission shaft.
Specifically, the control unit of the transmission judges whether the speed sensor 203 of the related transmission shaft fails or not in real time according to the rotating speed of the related transmission shaft and/or the ratio between the current vehicle speed and the related transmission shaft. Once the control unit of the transmission detects that there is a failed speed sensor 203, it first determines whether the transmission shaft corresponding to the failed speed sensor 203 is in neutral.
If the control unit of the transmission detects that the target propeller shaft is in a neutral position, the saved rotational speed is acquired before the speed sensor 203 of the target propeller shaft fails as the current rotational speed of the target propeller shaft.
If the control unit of the transmission detects that the target propeller shaft is not in a neutral position. And the control unit of the transmission selects the rotating speed of the transmission shaft and/or the current speed of the transmission shaft which is stable compared with the transmission of the target transmission shaft in the combination as a reference rotating speed according to the combination where the target transmission shaft is located. And the transmission control unit calculates the rotating speed of the target transmission shaft according to the reference rotating speed and a preset proportional relation between the reference rotating speed and the target transmission shaft. And the control unit of the transmission takes the calculated rotating speed as the current rotating speed of the target rotating shaft.
The present embodiment also provides a transmission correction apparatus 500, which may include at least one software functional module that may be stored in the form of software or firmware (firmware) in the machine-readable storage medium 202 or solidified in an Operating System (OS) of a control unit of the transmission. The processor 201 may be configured to execute executable modules stored in the machine-readable storage medium 202, such as software functional modules and computer programs included in the transmission correction apparatus.
As shown in fig. 4, the transmission correction apparatus is applied to a control unit of a transmission including a speed sensor 203 corresponding to a propeller shaft; the transmission correction apparatus includes a fault detection module 501 and a fault correction module 502.
The failure detection module 501 is used for detecting whether the speed sensor 203 of the target transmission shaft fails.
In this embodiment, the fault detection module 501 is configured to execute step S100 in fig. 2, and reference may be made to the detailed description of step S100 for a detailed description of the fault detection module 501.
The fault correction module 502 is configured to calculate a rotation speed of the target transmission shaft according to the rotation speeds of the speed sensors 203 of the other transmission shafts related to the target transmission shaft and/or the current vehicle speed when the speed sensor 203 of the target transmission shaft has a fault.
In this embodiment, the fault correction module 502 is configured to execute step S200 in fig. 2, and for details of the fault correction module 502, reference may be made to the detailed description of step S200.
Optionally, the fault correction module 502 detects whether the speed sensor 203 of the target propeller shaft is faulty by:
calculating the speed ratio between the rotating speeds acquired by the speed sensor 203 of the target transmission shaft and the speed sensors 203 of other transmission shafts related to the target transmission shaft and/or the current vehicle speed;
and when the speed proportion is detected to be not in accordance with the preset proportion relation, judging whether the speed sensor 203 of the target transmission shaft has a fault.
The embodiment also provides a motor vehicle, which comprises a transmission and a control unit of the transmission, wherein the transmission comprises a transmission shaft and a speed sensor 203 corresponding to the transmission shaft; the transmission unit is configured to:
detecting whether a speed sensor of a target transmission shaft has a fault;
and if the speed sensor of the target transmission shaft has a fault, calculating the rotating speed of the target transmission shaft according to the rotating speed and/or the current vehicle speed acquired by the speed sensors 203 of other transmission shafts related to the target transmission shaft.
In summary, the transmission correction method, the transmission correction device and the motor vehicle provided by the application are applied to a transmission, whether a speed sensor 203 of a transmission shaft of the transmission fails or not is detected, and if the speed sensor 203 fails, the rotating speed of the transmission shaft corresponding to the failed sensor is calculated according to the rotating speed of the transmission shaft related to the failed speed sensor 203 and/or the current vehicle speed. By replacing the rotating speed of the corresponding transmission shaft of the speed sensor 203 with the fault speed sensor, the vehicle can stably run when the speed sensor 203 is in fault, and the reliability of the transmission control system is improved.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A transmission correction method applied to a control unit of a transmission including a propeller shaft and a speed sensor corresponding to the propeller shaft, the method comprising:
detecting whether a speed sensor of a target transmission shaft has a fault;
if the speed sensor of the target transmission shaft fails, calculating the rotating speed of the target transmission shaft according to the rotating speed acquired by the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed;
the step of detecting whether the speed sensor of the target transmission shaft is out of order comprises:
calculating the speed ratio between the rotating speeds acquired by the speed sensor of the target transmission shaft and the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed;
when the speed proportion is detected to be not in accordance with the preset proportion relation, judging whether a speed sensor of the target transmission shaft breaks down or not;
the control unit prestores a plurality of combinations of other transmission shafts related to the target transmission shaft and/or the current vehicle speed, and the plurality of combinations are configured with corresponding priorities;
the step of calculating the speed ratio between the rotating speeds collected by the speed sensor of the target transmission shaft and the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed comprises the following steps:
selecting a combination with the highest priority from the combinations of speed sensors which are not detected to have faults;
judging whether the speed sensor of the target transmission shaft breaks down or not according to the proportional relation of the rotating speed and/or the vehicle speed of the transmission shaft in the combination with the highest priority;
and according to the stability of the speed ratio between the target transmission shaft and other transmission shafts related to the target transmission shaft and/or the current vehicle speed, prioritizing a first input transmission shaft, a second input transmission shaft, an output shaft and the current vehicle speed according to a preset rule, wherein the other transmission shafts related to the target transmission shaft comprise the first input transmission shaft, the second input transmission shaft and the output shaft.
2. The transmission correction method according to claim 1, characterized in that a control unit of the transmission continuously records the rotation speed acquired by each speed sensor; before the step of calculating the rotating speed of the target transmission shaft according to the rotating speed collected by the speed sensor of the transmission shaft related to the target transmission shaft and/or the current vehicle speed if the speed sensor of the target transmission shaft fails, the method comprises the following steps:
detecting whether the target transmission shaft is in a neutral gear state;
and if the target transmission shaft is in a neutral gear state, using the rotating speed acquired and stored before the speed sensor of the target transmission shaft breaks down as the current rotating speed of the target transmission shaft.
3. The method of claim 1, wherein the step of calculating the rotational speed of the target propeller shaft based on the rotational speeds collected by the speed sensors of the other propeller shafts associated with the target propeller shaft and/or the current vehicle speed comprises:
and selecting the rotating speed obtained by the corresponding speed sensor of the related transmission shaft as a reference rotating speed according to a preset rule, and calculating the rotating speed of the target transmission shaft according to a preset proportional relation through the reference rotating speed.
4. The transmission correction method according to claim 1, wherein the speed sensor includes a failure detection device, and the step of detecting whether the speed sensor of the target propeller shaft is failed includes:
and if a fault indication signal sent by the fault detection device is received, marking the state of the speed sensor sending the fault indication signal as a fault state.
5. The transmission correction method according to any one of claims 1 to 4, characterized in that the method of detecting whether the speed sensor of the target propeller shaft is malfunctioning further includes:
and sending a fault reminding signal to remind a user when the speed sensor of the target transmission shaft is detected to be in fault.
6. A transmission correction device is characterized by being applied to a control unit of a transmission, wherein the transmission comprises a transmission shaft and a speed sensor corresponding to the transmission shaft; the transmission correction device comprises a fault detection module and a fault correction module;
the fault detection module is used for detecting whether a speed sensor of the target transmission shaft is in fault;
the fault correction module is used for calculating the rotating speed of the target transmission shaft according to the rotating speed acquired by the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed when the speed sensor of the target transmission shaft has a fault;
the fault correction module detects whether a speed sensor of the target drive shaft is faulty by:
calculating the speed ratio between the rotating speeds acquired by the speed sensor of the target transmission shaft and the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed;
when the speed proportion is detected to be not in accordance with the preset proportion relation, judging whether a speed sensor of the target transmission shaft breaks down or not;
the control unit prestores a plurality of combinations of other transmission shafts related to the target transmission shaft and/or the current vehicle speed, and the plurality of combinations are configured with corresponding priorities;
the step of calculating the speed ratio between the rotating speeds collected by the speed sensor of the target transmission shaft and the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed comprises the following steps:
selecting a combination with the highest priority from the combinations of speed sensors which are not detected to have faults;
judging whether the speed sensor of the target transmission shaft breaks down or not according to the proportional relation of the rotating speed and/or the vehicle speed of the transmission shaft in the combination with the highest priority;
and according to the stability of the speed ratio between the target transmission shaft and other transmission shafts related to the target transmission shaft and/or the current vehicle speed, prioritizing a first input transmission shaft, a second input transmission shaft, an output shaft and the current vehicle speed according to a preset rule, wherein the other transmission shafts related to the target transmission shaft comprise the first input transmission shaft, the second input transmission shaft and the output shaft.
7. A motor vehicle, characterized in that it comprises a transmission and a control unit of the transmission, the transmission comprising a propeller shaft and a speed sensor corresponding to the propeller shaft; the control unit of the transmission is configured to:
detecting whether a speed sensor of a target transmission shaft has a fault;
if the speed sensor of the target transmission shaft fails, calculating the rotating speed of the target transmission shaft according to the rotating speed acquired by the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed;
the step of detecting whether the speed sensor of the target transmission shaft is out of order comprises:
calculating the speed ratio between the rotating speeds acquired by the speed sensor of the target transmission shaft and the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed;
when the speed proportion is detected to be not in accordance with the preset proportion relation, judging whether a speed sensor of the target transmission shaft breaks down or not;
the control unit prestores a plurality of combinations of other transmission shafts related to the target transmission shaft and/or the current vehicle speed, and the plurality of combinations are configured with corresponding priorities;
the step of calculating the speed ratio between the rotating speeds collected by the speed sensor of the target transmission shaft and the speed sensors of other transmission shafts related to the target transmission shaft and/or the current vehicle speed comprises the following steps:
selecting a combination with the highest priority from the combinations of speed sensors which are not detected to have faults;
judging whether the speed sensor of the target transmission shaft breaks down or not according to the proportional relation of the rotating speed and/or the vehicle speed of the transmission shaft in the combination with the highest priority;
and according to the stability of the speed ratio between the target transmission shaft and other transmission shafts related to the target transmission shaft and/or the current vehicle speed, prioritizing a first input transmission shaft, a second input transmission shaft, an output shaft and the current vehicle speed according to a preset rule, wherein the other transmission shafts related to the target transmission shaft comprise the first input transmission shaft, the second input transmission shaft and the output shaft.
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| CN201811168050.5A CN111006011B (en) | 2018-10-08 | 2018-10-08 | Transmission correction method and device and motor vehicle |
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| CN113431898B (en) * | 2021-08-27 | 2021-12-14 | 北京航空航天大学 | Fault diagnosis method for speed sensor of output shaft of automatic transmission |
| CN114542709A (en) * | 2022-02-24 | 2022-05-27 | 三一电动车科技有限公司 | Fault determination method and system for rotation speed sensor and driving device |
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| US8543284B2 (en) * | 2006-08-29 | 2013-09-24 | GM Global Technology Operations LLC | Vehicle speed sensor diagnostic system and method |
| JP5847521B2 (en) * | 2011-10-05 | 2016-01-20 | アイシン・エーアイ株式会社 | Dual clutch automatic transmission |
| CN104089003B (en) * | 2014-06-24 | 2016-03-16 | 安徽江淮汽车股份有限公司 | A kind of double-clutch automatic gearbox limp-home controlling method |
| CN104455380B (en) * | 2014-12-03 | 2016-08-31 | 安徽江淮汽车股份有限公司 | Double clutch gearbox OSS failure judgment method |
| CN108119646B (en) * | 2016-11-28 | 2020-06-16 | 上海汽车集团股份有限公司 | Fault diagnosis method and device for vehicle rotation speed sensor |
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