Dual clutch transmission speed measurement value inspection method, device and storage medium

Abstract

The present application relates to a method, device and storage medium for verifying the speed measurement value of a dual-clutch transmission. The method includes: using the transmission output shaft speed, the driving wheel vehicle speed and the clutch speed corresponding to the current gear information as verification parameters; taking any of the verification parameters as a reference, converting the measured values ​​of each verification parameter to obtain the corresponding verification value; using the transmission output shaft speed or the clutch speed as the object to be verified; respectively calculating the first difference between the speed verification value of the object to be verified and the verification values ​​of the remaining verification parameters, and the second difference between the verification values ​​of the remaining verification parameters; determining the verification result of the measurement value of the object to be verified based on the first difference and the second difference. The method verifies the measurement value of the object to be verified by a pairwise verification method, thereby improving the accuracy of the verification result and providing accurate and effective basic data for vehicle control.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of automobile technology, and in particular to a method, device and storage medium for checking the speed measurement value of a dual-clutch transmission. Background Art

[0002] As a key component in the automobile power system assembly, the dual-clutch transmission includes a clutch and a transmission. It can transfer the power provided by the engine to the reducer through the clutch and the transmission, and then transfer it to the wheels through the reducer, thereby driving the wheels to move.

[0003] Usually, the input shaft and output shaft of a dual-clutch transmission are both equipped with speed sensors, which are used to measure the clutch speed and the output shaft speed respectively. The measured values ​​will be used as the basic data for vehicle control. In actual applications, if the speed signal output by the speed sensor of the dual-clutch transmission is abnormal, but the speed sensor does not have any electrical related faults, the vehicle will not directly report a fault during use. At this time, affected by the abnormal speed signal, the vehicle will have a problem of skipping gears during driving, which will seriously affect driving safety when the vehicle speed is high. It can be seen that whether the clutch speed measurement value and the output shaft speed measurement value of the dual-clutch transmission are credible is of great significance to vehicle control. Summary of the invention

[0004] Based on this, the embodiments of the present application provide a dual-clutch transmission speed measurement value verification method, device and storage medium, which can verify the credibility of the clutch speed measurement value and the output shaft speed measurement value of the dual-clutch transmission, and provide accurate and effective basic data for vehicle control.

[0005] In a first aspect, an embodiment of the present application provides a method for verifying a speed measurement value of a dual-clutch transmission, comprising:

[0006] The transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information are used as verification parameters;

[0007] Taking any of the calibration parameters as a reference, converting the measured values ​​of each calibration parameter to obtain a corresponding calibration value;

[0008] Taking the transmission output shaft speed or the clutch speed as an object to be verified;

[0009] respectively calculating a first difference between the rotation speed check value of the object to be checked and the check values ​​of the other check parameters, and a second difference between the check values ​​of the other check parameters;

[0010] A measurement value verification result of the object to be verified is determined according to the first difference and the second difference.

[0011] In a second aspect, an embodiment of the present application provides a dual clutch transmission speed measurement value verification device, comprising:

[0012] A first determination module is used to use the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters;

[0013] A conversion module, used to convert the measured values ​​of each calibration parameter based on any of the calibration parameters to obtain a corresponding calibration value;

[0014] A second determination module, configured to use the transmission output shaft speed or the clutch speed as a to-be-checked object;

[0015] A processing module, used to respectively calculate a first difference between a rotation speed check value of the object to be checked and the check values ​​of the other check parameters, and a second difference between the check values ​​of the other check parameters;

[0016] The third determination module is used to determine the measurement value verification result of the object to be verified according to the first difference and the second difference.

[0017] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the dual-clutch transmission speed measurement value verification method provided in the first aspect of the embodiment of the present application.

[0018] The technical solution provided in the embodiment of the present application uses the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters, and converts the measured values ​​of each verification parameter based on any verification parameter to obtain the verification value of each verification parameter. In theoretical calculations, each verification value obtained after converting the measured values ​​of each verification parameter based on a unified reference should be consistent with or very close to the measured value of the verification parameter selected as the reference, and the probability of two or more verification parameters having problems at the same time is low and can be ignored. Therefore, after determining the object to be verified, the first difference between the verification value of the object to be verified and the remaining verification values, as well as the second difference between the remaining verification values, can be calculated respectively, and the verification result of the measurement value of the object to be verified can be determined based on the first difference and the second difference, that is, the measurement value of the object to be verified is verified by a pairwise verification method, which improves the accuracy of the verification result and provides accurate and effective basic data for vehicle control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of power transmission of a dual clutch transmission vehicle provided in an embodiment of the present application;

[0020] Figure 2A schematic flow chart of a method for verifying a speed measurement value of a dual-clutch transmission provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of a structure of a dual clutch transmission speed measurement value verification device provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the structure of a vehicle controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only the parts related to the present application, rather than all structures, are shown in the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of power transmission of a dual clutch transmission vehicle, such as Figure 1 As shown, the rotation speed from the engine assembly 110 is transmitted to the transmission 122 via the dual clutch 121 in the transmission assembly 120, and serves as the input rotation speed of the transmission 122, namely the clutch rotation speed; the clutch rotation speed is output through the output shaft 123 after the gear ratio relationship of the transmission 122 changes, namely the transmission output shaft rotation speed; the transmission output shaft rotation speed is transmitted to the wheels 140 through the speed ratio change of the reducer 130, thereby driving the wheels to move.

[0025] In practical applications, the clutch speed and the transmission output shaft speed can be measured by corresponding speed sensors and used as basic data for vehicle control. Therefore, it is important to determine whether the clutch speed measurement value and the transmission output shaft speed measurement value are credible. To this end, the technical solution provided in the embodiment of the present application can verify the credibility of the clutch speed measurement value and the transmission output shaft speed measurement value.

[0026] In order to make the purpose, technical solution and advantages of the present application more clear, the technical solution in the embodiments of the present application is further described in detail through the following embodiments and in combination with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0027] It should be noted that the execution subject of the following method embodiment may be a dual clutch transmission speed measurement value verification device, which may be implemented as part or all of a vehicle controller by software, hardware, or a combination of software and hardware. The following method embodiment is described by taking the execution subject as a vehicle controller as an example.

[0028] Figure 2A schematic flow chart of a method for verifying the speed measurement value of a dual clutch transmission provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, the method may include:

[0029] S201, using the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters.

[0030] For models matching dual-clutch transmissions, the odd and even shafts are not in gear at the same time when the vehicle is driving, so when performing speed verification, it is necessary to select the corresponding clutch speed as one of the verification parameters based on the current gear information. Optionally, if the current gear information is an odd gear, the odd clutch speed is used as one of the verification parameters. If the current gear information is an even gear, the even clutch speed is used as one of the verification parameters. For example, when the current gear information is equal to 1st gear, 3rd gear, 5th gear or 7th gear, it can be determined that the odd shaft is the gear shaft in gear, and the odd clutch can be used as one of the verification parameters. When the current gear information is equal to 2nd gear, 4th gear or 8th gear, it can be determined that the even shaft is the gear shaft in gear, and the even clutch can be used as one of the verification parameters. At the same time, the power transmission of the wheels of the dual-clutch transmission also involves the transmission output shaft speed and the drive wheel speed. Therefore, the transmission output shaft speed and the drive wheel speed are also used as the verification parameters required in the speed verification process.

[0031] S202: Taking any of the verification parameters as a reference, convert the measured values ​​of the verification parameters to obtain corresponding verification values.

[0032] During the design process of the vehicle, the vehicle powertrain and transmission system assembly include multiple rotating shafts, such as the engine shaft, transmission input shaft, transmission output shaft, wheel connecting shaft, etc., and each shaft often has a different speed due to different functions. Therefore, when applying the above-mentioned verification parameters to verify the transmission output shaft speed measurement value or the clutch speed measurement value, it is necessary to convert the measurement values ​​of each verification parameter so that each verification parameter is unified into the same category, ensuring that the measurement values ​​of each verification parameter are numerically comparable after conversion.

[0033] Therefore, any calibration parameter can be selected as the basis for conversion, and the measured values ​​of the remaining selected calibration parameters can be converted respectively and unified to the calibration parameter selected as the basis, thereby obtaining the calibration values ​​corresponding to each calibration parameter.

[0034] It should be noted that, for the calibration parameter selected as the reference, the measured value of the calibration parameter selected as the reference can be converted according to a 1:1 conversion relationship to obtain a converted calibration value.

[0035] Optionally, when the transmission output shaft speed is selected as the reference, the conversion process of other relevant verification parameters can be as follows:

[0036] Regarding the measured value of the driving wheel speed: determine the verification value of the driving wheel speed according to the measured value of the driving wheel speed, the main reduction ratio of the reducer and the driving wheel radius.

[0037] Specifically, the driving wheel speed measurement value may be converted based on the following formula 1 or a variation of formula 1:

[0038]

[0039] Among them, i is the main reduction ratio of the reducer, s_wheelspeed is the measured value of the driving wheel speed, R is the driving wheel radius, n car It is the calibration value of the driving wheel speed.

[0040] For the odd clutch speed measurement value: determine the calibration value of the odd clutch speed according to the odd clutch speed measurement value and the transmission speed ratio.

[0041] Specifically, the odd clutch speed measurement value may be converted based on the following formula 2 or a variation of formula 2:

[0042]

[0043] Among them, n clt1 is the calibration value of the odd clutch speed, s_clt1speed is the measured value of the odd clutch speed, i G is the transmission speed ratio, which is related to the current gear information.

[0044] For the odd clutch speed measurement value: determine the calibration value of the even clutch speed according to the even clutch speed measurement value and the transmission speed ratio.

[0045] Specifically, the even-numbered clutch speed measurement value may be converted based on the following formula 3 or a variation of formula 3:

[0046]

[0047] Among them, n clt2 is the calibration value of the odd clutch speed, s_clt2speed is the measured value of the odd clutch speed, i G is the transmission speed ratio, which is related to the current gear information.

[0048] S203: Taking the transmission output shaft speed or the clutch speed as an object to be verified.

[0049] In this embodiment, the transmission output shaft speed measurement value or the clutch speed measurement value is mainly verified. Therefore, based on actual needs, the transmission output shaft speed or the clutch speed can be selected as the object to be verified.

[0050] S204: Calculate first differences between the verification value of the object to be verified and the verification values ​​of the remaining verification parameters, and second differences between the verification values ​​of the remaining verification parameters.

[0051] After completing the conversion of each verification parameter, the verification value of the object to be verified can be subtracted from the verification values ​​of the remaining verification parameters to obtain a first difference, and the verification values ​​of the remaining verification parameters can be subtracted from each other to obtain a second difference.

[0052] Exemplarily, taking the object to be verified as the transmission output shaft speed as an example, the verification value of the transmission output shaft speed can be subtracted from the verification value of the driving wheel speed, and the verification value of the transmission output shaft speed can be subtracted from the verification value of the clutch speed, so as to obtain multiple first difference values, and the verification value of the driving wheel speed can be subtracted from the verification value of the clutch speed to obtain the second difference value. Among them, the above-mentioned clutch speed refers to the clutch speed corresponding to the current gear information. If the current gear information is an odd gear, the above-mentioned clutch speed is an odd clutch speed, that is, the difference between the verification value of the driving wheel speed and the verification value of the odd clutch speed is calculated. If the current gear information is an even gear, the above-mentioned clutch speed is an even clutch speed, that is, the difference between the verification value of the driving wheel speed and the verification value of the even clutch speed is calculated.

[0053] Taking the clutch speed as an example, the check value of the clutch speed can be subtracted from the check value of the transmission output shaft speed, the check value of the clutch speed can be subtracted from the check value of the drive wheel speed, and multiple first difference values ​​can be obtained, and the check value of the transmission output shaft speed can be subtracted from the check value of the drive wheel speed to obtain a second difference value. Similarly, the above clutch speed can be determined based on the current gear information to determine whether it is an odd clutch speed or an even clutch speed, and can be calculated according to the corresponding clutch speed.

[0054] S205: Determine a measurement value verification result of the object to be verified according to the first difference and the second difference.

[0055] After the conversion in the aforementioned steps, in theory, the verification values ​​of each verification parameter should be equal, so the first difference and the second difference should both be zero. However, in practical applications, there will definitely be differences between the verification parameters. Therefore, the first difference and the second difference can be used to determine whether the measured value of the object to be verified is credible.

[0056] Optionally, the process of S205 may be: if the first difference value satisfies a preset condition and the second difference value does not satisfy the preset condition within a preset time period, it is determined that the measurement value of the object to be verified is unreliable.

[0057] Optionally, the first difference satisfies the preset condition including: the first difference exceeds both a first preset threshold and a second preset threshold; wherein, the second preset threshold is obtained based on a preset speed ratio; the second difference does not satisfy the preset condition including: the second difference does not exceed at least one of the first preset threshold and the second preset threshold.

[0058] Specifically, the first preset threshold and the preset speed ratio are related to the current gear information, that is, the corresponding first preset threshold and preset speed ratio can be selected based on the current gear information, and the second preset threshold can be obtained by multiplying the preset speed ratio and the current transmission output shaft speed measurement value. If the first difference exceeds the first preset threshold and the second preset threshold within the preset time length, it can be indicated that the verification result between the remaining verification parameters and the object to be verified is not passed; if the second difference does not exceed at least one of the first preset threshold and the second preset threshold within the preset time length, it can be indicated that the verification result between the remaining verification parameters is passed. In the process of verifying the measured value of the object to be verified, the verification result between the remaining verification parameters and the object to be verified is not passed and the verification result between the remaining verification parameters is passed, it can be determined that the measured value of the object to be verified is not credible. That is to say, after obtaining the first difference and the second difference, if the first difference exceeds the first preset threshold and the second preset threshold within the preset time length and the second difference does not exceed at least one of the first preset threshold and the second preset threshold, it is determined that the measured value of the object to be verified is not credible.

[0059] Exemplarily, during the verification of the transmission output shaft speed, when the verification between the transmission output shaft speed and the clutch speed fails, the verification between the transmission output shaft speed and the driving wheel speed fails, and the verification between the clutch speed and the driving wheel speed passes, it is determined that the measured value of the transmission output shaft speed is unreliable. Wherein, when the first difference between the verification value of the transmission output shaft speed and the verification value of the clutch speed exceeds the first preset threshold and the second preset threshold, it is determined that the verification between the transmission output shaft speed and the clutch speed fails; when the first difference between the verification value of the transmission output shaft speed and the verification value of the driving wheel speed exceeds the first preset threshold and the second preset threshold, it is determined that the verification between the transmission output shaft speed and the driving wheel speed fails; when the second difference between the verification value of the clutch speed and the verification value of the driving wheel speed does not exceed at least one of the first preset threshold and the second preset threshold, it is determined that the verification between the clutch speed and the driving wheel speed passes.

[0060] The dual-clutch transmission speed measurement value verification method provided in the present application uses the transmission output shaft speed, the driving wheel vehicle speed and the clutch speed corresponding to the current gear information as verification parameters, and converts the measured values ​​of each verification parameter based on any verification parameter to obtain the verification value of each verification parameter. Since in theoretical calculations, each verification value obtained after converting the measured values ​​of each verification parameter based on a unified reference should be consistent with or very close to the measured value of the verification parameter selected as the reference, and the probability of two or more verification parameters having problems at the same time is low and can be ignored, therefore, after determining the object to be verified, the first difference between the verification value of the object to be verified and the remaining verification values, as well as the second difference between the remaining verification values, can be calculated respectively, and the measurement value verification result of the object to be verified can be determined based on the first difference and the second difference, that is, the measurement value of the object to be verified is verified by a pairwise verification method, which improves the accuracy of the verification result and provides accurate and effective basic data for vehicle control.

[0061] Optionally, in order to improve the execution efficiency of the dual-clutch transmission speed measurement value verification method provided in the embodiment of the present application, optionally, before using the transmission output shaft speed, the drive wheel speed and the clutch speed corresponding to the current gear information as verification parameters, the speed verification conditions for enabling the present method can also be set.

[0062] Specifically, it can be determined whether the clutch speed sensor and the transmission output shaft speed sensor are working properly. When the clutch speed sensor and the transmission output shaft speed sensor are working properly, that is, when the clutch speed sensor and the transmission output shaft speed sensor are not faulty, it is also necessary to determine whether the current vehicle state meets the preset speed verification condition. If the current vehicle state meets the speed verification condition, the step of using the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as the verification parameter is executed. Optionally, the speed verification condition may include: the vehicle is traveling on a non-low-adhesion road surface, the driving wheel speed measurement signal is normal, the vehicle is not in a neutral state, the vehicle is not in a gear shifting state (avoiding the influence of the clutch shifting on the speed signal), the vehicle speed exceeds the preset speed (wherein the preset speed can be calibrated, and optionally, the preset speed can be set to 10 kilometers per hour) and the vehicle's throttle opening meets the preset throttle opening (avoiding wheel slipping due to rapid acceleration).

[0063] In this embodiment, the vehicle is tested by setting the above-mentioned speed test conditions to ensure that the vehicle is in a stable driving state when the vehicle speed is tested, thereby reducing the impact on the verification result of the dual-clutch transmission speed measurement value, thereby improving the accuracy of the verification result.

[0064] Further, if it is determined that the clutch speed measurement value is not credible, all calculation processes involving the clutch speed no longer use the clutch speed measurement value obtained by the clutch speed sensor, but use the transmission output shaft speed verification value or the drive wheel vehicle speed verification value to replace the clutch speed measurement value, so as to ensure the accuracy of the control process, thereby improving the safety of the vehicle. If it is determined that the transmission output shaft speed measurement value is not credible, all calculation processes involving the clutch speed no longer use the transmission output shaft speed measurement value obtained by the transmission output shaft speed sensor, but use the clutch speed verification value or the drive wheel vehicle speed verification value to replace the transmission output shaft speed measurement value, so as to ensure the accuracy of the control process, thereby improving the safety of the vehicle.

[0065] In this embodiment, when the clutch speed measurement value or the transmission output shaft speed measurement value is unreliable, the unreliable speed measurement value can be replaced to ensure the safety and normal driving of the vehicle.

[0066] Figure 3 A schematic diagram of a structure of a dual clutch transmission speed measurement value verification device provided in an embodiment of the present application. Figure 3 As shown, the device may include: a first determination module 301 , a conversion module 302 , a second determination module 303 , a processing module 304 and a third determination module 305 .

[0067] Specifically, the first determination module 301 is used to use the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters;

[0068] The conversion module 302 is used to convert the measured value of each calibration parameter based on any of the calibration parameters to obtain a corresponding calibration value;

[0069] The second determination module 303 is used to take the transmission output shaft speed or the clutch speed as a to-be-checked object;

[0070] The processing module 304 is used to respectively calculate a first difference between the check value of the object to be checked and the check values ​​of the other check parameters, and a second difference between the check values ​​of the other check parameters;

[0071] The third determination module 305 is used to determine the measurement value verification result of the object to be verified according to the first difference and the second difference.

[0072] Based on the above embodiment, optionally, the first determination module 301 is specifically used to use the odd clutch speed as one of the verification parameters if the current gear information is an odd gear; if the current gear information is an even gear, use the even clutch speed as one of the verification parameters.

[0073] On the basis of the above embodiment, optionally, the conversion module 302 is specifically used to determine the transmission output shaft speed as a reference; determine the verification value of the driving wheel speed according to the measured value of the driving wheel speed, the main reduction ratio of the reducer and the driving wheel radius; determine the verification value of the odd clutch speed according to the measured value of the odd clutch speed and the transmission speed ratio; determine the verification value of the even clutch speed according to the measured value of the even clutch speed and the transmission speed ratio.

[0074] Based on the above embodiment, optionally, the third determination module 305 is specifically configured to determine that the measurement value of the object to be verified is unreliable if the first difference satisfies a preset condition and the second difference does not satisfy the preset condition within a preset time period.

[0075] Optionally, the first difference satisfies the preset condition including: the first difference exceeds both a first preset threshold and a second preset threshold; wherein, the second preset threshold is obtained based on a preset speed ratio; the second difference does not satisfy the preset condition including: the second difference does not exceed at least one of the first preset threshold and the second preset threshold.

[0076] On the basis of the above embodiment, optionally, the device may further include: a first judgment module and a second judgment module.

[0077] Specifically, the first judgment module is used to judge whether the clutch speed sensor and the transmission output shaft speed sensor are working properly before the first determination module 301 uses the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters;

[0078] The second judgment module is used to judge whether the current vehicle state meets the preset speed verification condition when the clutch speed sensor and the transmission output shaft speed sensor are working normally;

[0079] The first determination module 301 is specifically configured to use the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters when the current vehicle state satisfies the speed verification condition.

[0080] Optionally, the speed verification conditions include: the vehicle is traveling on a non-low-adhesion road surface, the drive wheel speed measurement signal is normal, the vehicle is not in neutral, the vehicle is not in a gear shift state, the vehicle speed exceeds a preset speed, and the vehicle's throttle opening meets a preset throttle opening.

[0081] Based on the above embodiment, optionally, the device further includes: a replacement module.

[0082] Specifically, the replacement module is used to replace the clutch speed measurement value with the transmission output shaft speed verification value or the driving wheel speed verification value when it is determined that the clutch speed measurement value is unreliable;

[0083] The replacement module is also used to replace the transmission output shaft speed measurement value with the clutch speed verification value or the driving wheel vehicle speed verification value when it is determined that the transmission output shaft speed measurement value is unreliable.

[0084] In one embodiment, a vehicle controller is provided, whose internal structure diagram can be as follows: Figure 4 The vehicle controller may include a processor 40, a memory 41, an input device 42, and an output device 43; the number of processors 40 in the vehicle controller may be one or more. Figure 4 A processor 40 is taken as an example; the processor 40, the memory 41, the input device 42 and the output device 43 in the vehicle controller can be connected by a bus or other means. Figure 4 The example of connecting through bus is taken in the following.

[0085] The memory 41, as a computer-readable storage medium, can be used to store software programs, computer executable programs and modules, such as the program instructions / modules corresponding to the dual-clutch transmission speed measurement value verification method in the embodiment of the present application (for example, the first determination module 301, the conversion module 302, the second determination module 303, the processing module 304 and the third determination module 305 in the dual-clutch transmission speed measurement value verification device). The processor 40 executes various functional applications and data processing of the vehicle controller by running the software programs, instructions and modules stored in the memory 41, that is, realizing the above-mentioned dual-clutch transmission speed measurement value verification method.

[0086] The memory 41 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the vehicle controller, etc. In addition, the memory 41 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some examples, the memory 41 may further include a memory remotely arranged relative to the processor 40, and these remote memories may be connected to the vehicle controller via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0087] The input device 42 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the vehicle controller. The output device 43 may include a display device such as a display screen.

[0088] The embodiment of the present application further provides a storage medium containing computer executable instructions, wherein the computer executable instructions are used to execute a method for verifying a speed measurement value of a dual clutch transmission when executed by a computer processor, the method comprising:

[0089] The transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information are used as verification parameters;

[0090] Taking any of the calibration parameters as a reference, converting the measured values ​​of each calibration parameter to obtain a corresponding calibration value;

[0091] Taking the transmission output shaft speed or the clutch speed as an object to be verified;

[0092] respectively calculating a first difference between the check value of the object to be checked and the check values ​​of the remaining check parameters, and a second difference between the check values ​​of the remaining check parameters;

[0093] A measurement value verification result of the object to be verified is determined according to the first difference and the second difference.

[0094] Of course, the storage medium containing computer executable instructions provided in an embodiment of the present application, whose computer executable instructions are not limited to the method operations described above, can also execute related operations in the dual-clutch transmission speed measurement value verification method provided in any embodiment of the present application.

[0095] Through the above description of the implementation method, the technicians in the relevant field can clearly understand that the present application can be implemented with the help of software and necessary general hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application can be essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0096] It is worth noting that in the embodiment of the above-mentioned search device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application.

[0097] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A method for verifying the speed measurement value of a dual clutch transmission, characterized in that: include: The transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information are used as verification parameters; Taking any of the calibration parameters as a reference, converting the measured values ​​of each calibration parameter to obtain a corresponding calibration value; Taking the transmission output shaft speed or the clutch speed as an object to be verified; respectively calculating a first difference between the check value of the object to be checked and the check values ​​of the remaining check parameters, and a second difference between the check values ​​of the remaining check parameters; Determining a measurement value verification result of the object to be verified according to the first difference and the second difference; The process of determining the clutch speed corresponding to the current gear information includes: If the current gear information is an odd gear, the odd clutch speed is used as one of the verification parameters; If the current gear information is an even gear, the even clutch speed is used as one of the verification parameters; The method of converting the measured values ​​of the calibration parameters based on any of the calibration parameters to obtain the corresponding calibration values ​​includes: Determining the transmission output shaft speed as a reference; Determine the verification value of the driving wheel speed according to the driving wheel speed measurement value, the main reduction ratio of the reducer and the driving wheel radius; wherein the reducer is used to receive the transmission output shaft speed and transmit the transmission output shaft speed to the wheel with a speed ratio change; Determining a calibration value of the odd-numbered clutch speed according to the odd-numbered clutch speed measurement value and the transmission speed ratio; A verification value of the even-numbered clutch speed is determined based on the even-numbered clutch speed measurement value and the transmission speed ratio.

2. The method according to claim 1, characterized in that The step of determining the measurement value verification result of the object to be verified according to the first difference and the second difference includes: If the first difference value satisfies a preset condition and the second difference value does not satisfy the preset condition within a preset time period, it is determined that the measurement value of the object to be verified is unreliable.

3. The method according to claim 2, characterized in that The first difference satisfies the preset condition including: the first difference exceeds both the first preset threshold and the second preset threshold; wherein the second preset threshold is obtained based on a preset speed ratio; The second difference value not satisfying the preset condition includes: the second difference value does not exceed at least one of the first preset threshold value and the second preset threshold value.

4. The method according to any one of claims 1 to 3, characterized in that Before using the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters, the method further includes: Determine whether the clutch speed sensor and the transmission output shaft speed sensor are working properly; If the clutch speed sensor and the transmission output shaft speed sensor are working normally, determining whether the current vehicle state meets a preset speed verification condition; If the current vehicle state satisfies the speed verification condition, the step of using the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters is executed.

5. The method according to claim 4, characterized in that The speed verification conditions include: the vehicle is traveling on a non-low-adhesion road surface, the driving wheel speed measurement signal is normal, the vehicle is not in a neutral state, the vehicle is not in a gear shift state, the vehicle speed exceeds a preset speed, and the vehicle's throttle opening meets a preset throttle opening.

6. The method according to any one of claims 1 to 3, characterized in that Also includes: If it is determined that the clutch speed measurement value is unreliable, replacing the clutch speed measurement value with the transmission output shaft speed verification value or the drive wheel vehicle speed verification value; If it is determined that the transmission output shaft speed measurement value is unreliable, the clutch speed verification value or the drive wheel vehicle speed verification value is used to replace the transmission output shaft speed measurement value.

7. A dual clutch transmission speed measurement value verification device, characterized in that: include: A first determination module is used to use the transmission output shaft speed, the driving wheel speed and the clutch speed corresponding to the current gear information as verification parameters; A conversion module, used to convert the measured values ​​of each calibration parameter based on any of the calibration parameters to obtain a corresponding calibration value; A second determination module, configured to use the transmission output shaft speed or the clutch speed as a to-be-checked object; A processing module, used to respectively calculate a first difference between the check value of the object to be checked and the check values ​​of the remaining check parameters, and a second difference between the check values ​​of the remaining check parameters; A third determination module, configured to determine a measurement value verification result of the object to be verified according to the first difference and the second difference; The first determination module is specifically configured to use the odd clutch speed as one of the verification parameters if the current gear position information is an odd gear position; and use the even clutch speed as one of the verification parameters if the current gear position information is an even gear position; The conversion module is specifically used to determine the transmission output shaft speed as a reference; determine the verification value of the driving wheel speed according to the driving wheel speed measurement value, the main reduction ratio of the reducer and the driving wheel radius; determine the verification value of the odd clutch speed according to the odd clutch speed measurement value and the transmission speed ratio; determine the verification value of the even clutch speed according to the even clutch speed measurement value and the transmission speed ratio; wherein the reducer is used to receive the transmission output shaft speed, and transmit the transmission output shaft speed to the wheels with a speed ratio change.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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