Transmission system control method, device and equipment and storage medium

Abstract

The invention discloses a transmission system control method and device, equipment and a storage medium. The method comprises the following steps: determining a to-be-detected transmission system participating in driving in a vehicle driving process; a preset index used for calculating the rotating speed calculation value of the input shaft of the to-be-detected transmission system is obtained, and the preset index at least comprises the reduction ratio corresponding to the current gear; determining a rotation speed calculation value of the input shaft of the to-be-detected transmission system according to the preset index; judging whether the deviation between the to-be-detected transmission system input shaft rotating speed calculated value and the to-be-detected transmission system input shaft rotating speed measured value is greater than a preset threshold value or not; and when the deviation is greater than a preset threshold value, controlling the to-be-detected transmission system to stop running. According to the scheme provided by the invention, faults of the transmission system can be detected in time, and corresponding measures can be taken, so that damage to vehicle parts is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle control, and particularly to a control method, device, equipment and storage medium for a transmission system. Background Art

[0002] The transmission system of a vehicle refers to a system that transmits the power generated by the power system to the wheels to drive the vehicle to move. Usually, a transmission system failure means that the power transmission route between the power output end and the wheels is damaged. In the prior art, there is no monitoring and control method for the transmission system failure of a vehicle. When a failure occurs in the transmission system of a vehicle, since the failure cannot be detected in time, the driver may continue to drive the vehicle, resulting in the idling of the power system and causing secondary damage to mechanical components.

[0003] Therefore, how to provide a control method for a transmission system to detect the transmission system failure in time and take corresponding measures to avoid damage to vehicle components has become an urgent technical problem to be solved. Summary of the Invention

[0004] The present application provides a control method, device, equipment and storage medium for a transmission system to detect the transmission system failure and take corresponding measures to avoid damage to vehicle components.

[0005] The present application provides a control method for a transmission system, including:

[0006] During the driving process of the vehicle, determining the to-be-detected transmission system participating in driving;

[0007] Obtaining a preset index for calculating the calculated value of the input shaft speed of the to-be-detected transmission system, where the preset index at least includes the reduction ratio corresponding to the current gear;

[0008] Determining the calculated value of the input shaft speed of the to-be-detected transmission system according to the preset index;

[0009] Judging whether the deviation between the calculated value of the input shaft speed of the to-be-detected transmission system and the measured value of the input shaft speed of the to-be-detected transmission system is greater than a preset threshold;

[0010] When the deviation is greater than the preset threshold, controlling the to-be-detected transmission system to stop running.

[0011] The beneficial effects of the present application are as follows: During the driving process of the vehicle, the to-be-detected transmission system participating in driving is determined; a preset index for calculating the calculated value of the input shaft speed of the to-be-detected transmission system is obtained; the calculated value of the input shaft speed of the to-be-detected transmission system is determined according to the preset index; it is judged whether the deviation between the calculated value of the input shaft speed of the to-be-detected transmission system and the measured value of the input shaft speed of the to-be-detected transmission system is greater than a preset threshold; when the deviation is greater than the preset threshold, it indicates that a fault has occurred in the transmission system of the vehicle. Thus, by comparing the calculated value and the measured value of the input shaft speed of the transmission system, the fault of the transmission system can be detected in a timely manner. At this time, the to-be-detected transmission system is controlled to stop operating, avoiding the occurrence of damage expansion and secondary damage caused by the idling of the power system, and avoiding the damage of vehicle components.

[0012] In one embodiment, the obtaining the preset index for calculating the calculated value of the input shaft speed of the to-be-detected transmission system includes:

[0013] When the to-be-detected transmission system is a motor transmission system, obtain the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels.

[0014] When the to-be-detected transmission system is an engine transmission system, obtain the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels.

[0015] When the to-be-detected transmission system is a generator transmission system, obtain the reduction ratio corresponding to the current gear and the reduction ratio of the main reducer where the engine and the motor are connected.

[0016] In one embodiment, when the to-be-detected transmission system is a motor transmission system or an engine transmission system, the determining the calculated value of the input shaft speed of the corresponding transmission system of the vehicle according to the preset index includes:

[0017] Substitute the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into the first preset formula to determine the calculated value of the input shaft speed of the corresponding transmission system of the vehicle.

[0018] In one embodiment, when the to-be-detected transmission system is a generator transmission system, the determining the calculated value of the input shaft speed of the corresponding transmission system of the vehicle according to the preset index includes:

[0019] Substitute the reduction ratio corresponding to the current gear and the reduction ratio of the main reducer where the engine and the motor are connected into the second preset formula to determine the calculated value of the input shaft speed of the corresponding transmission system of the vehicle.

[0020] In one embodiment, when the to-be-detected transmission system is a motor transmission system, controlling the to-be-detected transmission system to stop operating includes:

[0021] When the vehicle is a two-wheel drive vehicle, the motor drive system is prohibited from outputting power, and the vehicle is controlled to gradually stop;

[0022] When the vehicle is a four-wheel drive vehicle, the motor drive system is prohibited from outputting power, and the vehicle speed is controlled to be maintained at a specific vehicle speed.

[0023] In one embodiment, when the drive system to be detected is an engine drive system, controlling the drive system to be detected to stop operating includes:

[0024] Turn off the engine and control the vehicle to stop;

[0025] When the drive system to be detected is an electric motor drive system, controlling the drive system to be detected to stop operating includes:

[0026] Turn off the engine and control the generator to stop running.

[0027] This application also provides a drive system control device, including:

[0028] A first determination module, configured to determine a drive system to be detected that participates in driving during vehicle driving;

[0029] An acquisition module, configured to acquire a preset index for calculating a calculated value of the input shaft speed of the drive system to be detected, where the preset index at least includes a reduction ratio corresponding to the current gear;

[0030] A second determination module, configured to determine a calculated value of the input shaft speed of the drive system to be detected according to the preset index;

[0031] A judgment module, configured to judge whether a deviation between a calculated value of the input shaft speed of the drive system to be detected and a measured value of the input shaft speed of the drive system to be detected is greater than a preset threshold;

[0032] A control module, configured to control the drive system to be detected to stop operating when the deviation is greater than the preset threshold.

[0033] In one embodiment, the acquisition module includes:

[0034] A first acquisition sub-module, configured to acquire a reduction ratio corresponding to the current gear, a reduction ratio of the main reducer, and left and right drive wheel speeds when the drive system to be detected is an electric motor drive system;

[0035] A second acquisition sub-module, configured to acquire a reduction ratio corresponding to the current gear, a reduction ratio of the main reducer, and left and right drive wheel speeds when the drive system to be detected is an engine drive system;

[0036] A third acquisition sub-module, configured to acquire a reduction ratio corresponding to the current gear and a reduction ratio of the main reducer when the drive system to be detected is a generator drive system and the engine and the motor are connected.

[0037] In one embodiment, when the drive system to be detected is a motor drive system or an engine drive system, the second determination module is further configured to:

[0038] Substitute the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the rotational speeds of the left and right drive wheels into a first preset formula to determine the calculated value of the rotational speed of the input shaft of the vehicle's corresponding drive system.

[0039] In one embodiment, the substituting the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the rotational speeds of the left and right drive wheels into a first preset formula to determine the calculated value of the rotational speed of the input shaft of the vehicle's corresponding drive system includes:

[0040] Substitute the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the rotational speeds of the left and right drive wheels into the following first preset formula to determine the calculated value of the rotational speed of the input shaft of the vehicle's corresponding drive system:

[0041]

[0042] Wherein, VS1 and VS2 are respectively the rotational speeds of the current left and right drive wheels; A is the reduction ratio corresponding to the current gear, B is the reduction ratio of the main reducer; R is the wheel radius; and π is the pi.

[0043] In one embodiment, when the drive system to be detected is a generator drive system, the second determination module is further configured to:

[0044] Substitute the reduction ratio corresponding to the current gear where the engine and the motor are connected and the reduction ratio of the main reducer into a second preset formula to determine the calculated value of the rotational speed of the input shaft of the vehicle's corresponding drive system.

[0045] In one embodiment, when the drive system to be detected is a motor drive system, the control module includes:

[0046] The first control sub-module is configured to, when the vehicle is a two-wheel drive vehicle, prohibit the motor drive system from outputting power and control the vehicle to gradually stop;

[0047] The second control sub-module is configured to, when the vehicle is a four-wheel drive vehicle, prohibit the motor drive system from outputting power and control the vehicle speed to remain at a specific vehicle speed.

[0048] In one embodiment, when the drive system to be detected is an engine drive system, the control module includes:

[0049] The third control sub-module is configured to turn off the engine and control the vehicle to stop;

[0050] When the drive system to be detected is a motor drive system, the control module includes:

[0051] The fourth control sub-module is used to shut down the engine and control the generator to stop running.

[0052] This application provides a drive system control device, including:

[0053] At least one processor; and,

[0054] A memory communicatively connected to the at least one processor; wherein,

[0055] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to implement the drive system control method described in any of the above embodiments.

[0056] This application also provides a computer-readable storage medium. When the instructions in the storage medium are executed by the processor corresponding to the drive system control device, the drive system control device can implement the drive system control method described in any of the above embodiments.

[0057] Other features and advantages of this application will be described in the subsequent specification, and part of them will become obvious from the specification, or be understood by implementing this application. The objectives and other advantages of this application can be achieved and obtained through the structures specifically pointed out in the written specification, claims, and drawings.

[0058] Next, through the drawings and embodiments, the technical solutions of this application will be further described in detail. Description of the Drawings

[0059] The drawings are used to provide a further understanding of this application, and constitute a part of the specification. They are used together with the embodiments of this application to explain this application, and do not constitute a limitation to this application. In the drawings:

[0060] Figure 1 is a flowchart of a drive system control method in an embodiment of this application;

[0061] Figure 2 is a schematic structural diagram of an electric motor drive system in an embodiment of this application;

[0062] Figure 3 is a schematic structural diagram of a drive system control device in an embodiment of this application;

[0063] Figure 4 is a schematic hardware structure diagram of a drive system control device in an embodiment of this application. Detailed Embodiments

[0064] The preferred embodiments of the present application will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present application, and are not used to limit the present application.

[0065] Figure 1 The following is a flowchart of a control method for a transmission system in an embodiment of the present application. As Figure 1 shown, the method can be implemented as the following steps S101 - S105:

[0066] In step S101, during the vehicle driving process, determine the transmission system to be detected that participates in driving;

[0067] In step S102, obtain a preset index for calculating the calculated value of the input shaft speed of the transmission system to be detected, where the preset index at least includes the reduction ratio corresponding to the current gear;

[0068] In step S103, determine the calculated value of the input shaft speed of the transmission system to be detected according to the preset index;

[0069] In step S104, determine whether the deviation between the calculated value of the input shaft speed of the transmission system to be detected and the measured value of the input shaft speed of the transmission system to be detected is greater than a preset threshold;

[0070] In step S105, when the deviation is greater than the preset threshold, control the transmission system to be detected to stop running.

[0071] In the present application, during the vehicle driving process, determine the transmission system to be detected that participates in driving.

[0072] The transmission system of a vehicle refers to a system that transmits the power generated by the power system to the wheels to drive the vehicle to move. The power system can include a drive motor or an engine. The transmission system of a vehicle that transmits the power generated by the drive motor to the wheels can be called an electric motor transmission system, and the system that transmits the power generated by the engine to the wheels can be called an engine transmission system. Taking the electric motor transmission system as an example, as Figure 2 shown, the electric motor transmission system can include components such as a clutch, a transmission, a drive shaft, and a differential. The engine transmission system is similar to it and will not be elaborated here.

[0073] In addition, the transmission system also includes a first shaft and a second shaft. The first shaft is also called the input shaft. As Figure 2As shown, the shaft connecting the transmission and the clutch is the input shaft, whose function is to input the power of the vehicle engine into the transmission through the adjustment of the clutch. The second shaft, also known as the output shaft, connects the transmission and the drive shaft and is used to output torque and rotational speed, and then drive the vehicle through the differential. In this application, it is to judge whether a failure occurs by comparing the deviation between the calculated value of the rotational speed of the input shaft of the transmission system and the measured value of the rotational speed of the input shaft of the transmission system. Since the reduction ratio of the transmission system in each state is preset and known; or the reduction ratio of the transmission system can be calculated through the current gear and the reduction ratio of the main reducer, therefore, it can be determined whether the vehicle's transmission system fails by whether the corresponding measured value of rotational speed and the calculated value of rotational speed are consistent.

[0074] For example, for the front transmission system, such as front-wheel drive vehicles / four-wheel drive vehicles, the front drive motor drives the front wheels to rotate through the reducer and the gearbox to make the vehicle move; similarly, for the rear transmission system, such as rear-wheel drive vehicles / four-wheel drive vehicles, the rear motor drives the rear wheels to rotate through the reducer and the gearbox to make the vehicle move; for the power generation transmission system, at this time the vehicle has an engine, and the engine and the motor (generator) are connected through the transmission system; for the engine drive system, the vehicle has an engine, and the engine is connected to the drive wheels through the reducer and the gearbox so that the engine drives the wheels to rotate. For different transmission systems, it can be determined whether the vehicle's transmission system fails by whether the corresponding measured value and the calculated value are consistent. In addition, due to the different vehicle types, the types of transmission systems are different. For example, the power system of an electric vehicle is a drive motor, while the power system of a pure fuel vehicle is an engine, and there are also differences in the transmission systems used to transmit the power of different power systems. Therefore, in this application, it is necessary to determine the transmission system to be detected participating in driving. Then obtain the preset index for calculating the calculated value of the rotational speed of the input shaft of the to-be-detected transmission system, where the preset index at least includes the reduction ratio corresponding to the current gear. Specifically, when the to-be-detected transmission system is a motor transmission system, obtain the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the rotational speeds of the left and right drive wheels; when the to-be-detected transmission system is an engine transmission system, obtain the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the rotational speeds of the left and right drive wheels; when the to-be-detected transmission system is a generator transmission system, obtain the reduction ratio corresponding to the current gear and the reduction ratio of the main reducer when the engine and the motor are connected.

[0075] Determine the calculated value of the input shaft speed of the drive system to be detected according to the indicators corresponding to the drive system to be detected; when the drive system to be detected is an electric motor drive system or an engine drive system, substitute the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into the first preset formula to determine the calculated value of the input shaft speed of the corresponding drive system of the vehicle. In an embodiment of the present application, for a pure electric vehicle model, the corresponding drive system is an electric motor drive system. Assuming that the vehicle gear is the drive gear, the calculated value of the input shaft speed of the corresponding drive system of the vehicle is determined by the following formula:

[0076]

[0077] Where, MotSpd 计算值 is the calculated value of the input shaft speed of the vehicle's electric motor; VS1 and VS2 are the wheel speeds of the current two left and right drive wheels respectively; A is the reduction ratio corresponding to the current gear (the reduction ratio A of the power system without a reducer is 1), B is the reduction ratio of the main reducer; R is the wheel radius; π is the pi.

[0078] It can be understood that when the vehicle is a pure electric vehicle and only has one gear, there is no reducer in the power system. In this case, A is 1.

[0079] Similarly, for a pure fuel vehicle model or a hybrid vehicle model in which the engine participates in driving, the drive system of the vehicle is an engine drive system. Assuming that the vehicle gear is the drive gear, the calculated value of the input shaft speed of the corresponding drive system of the vehicle is determined by the following formula:

[0080]

[0081] Where, EngSpd 计算值 is the calculated value of the input shaft speed of the vehicle's engine; VS1 and VS2 are the wheel speeds of the current two left and right drive wheels respectively; A is the reduction ratio corresponding to the current gear (the reduction ratio A of the power system without a reducer is 1), B is the reduction ratio of the main reducer; R is the wheel radius; π is the pi.

[0082] When the drive system to be detected is a generator drive system, substitute the reduction ratio corresponding to the current gear where the engine and the electric motor are connected and the reduction ratio of the main reducer into the second preset formula to determine the calculated value of the input shaft speed of the corresponding drive system of the vehicle. In another embodiment of the present application, for a pure fuel vehicle model or a hybrid vehicle model in which the engine participates in driving, the drive system of the vehicle is a generator drive system. Assuming that the vehicle gear is the drive gear, the calculated value of the input shaft speed of the corresponding drive system of the vehicle is determined by the following formula:

[0083] MotSpd 计算值 =EngSpd*A*B

[0084] Among them, MotSpd 计算值 is the calculated value of the rotational speed of the input shaft of the vehicle motor; EngSpd is the measured value of the current rotational speed of the input shaft of the engine; A is the reduction ratio corresponding to the current gear position where the engine and the motor are connected (the reduction ratio A of the power system without a speed reducer is 1), and B is the reduction ratio of the main speed reducer.

[0085] Judge whether the deviation between the calculated value and the measured value of the rotational speed of the input shaft of the transmission system to be detected is greater than a preset threshold. After obtaining the calculated value of the rotational speed of the input shaft of the transmission system to be detected, the deviation between the calculated value and the measured value is determined through the following formula:

[0086] Dif = |MotSpd 计算值 - MotSpd|

[0087] Or,

[0088] Dif = |EngSpd 计算值 - EngSpd|

[0089] Among them: Dif is the difference between the calculated value and the measured value of the rotational speed of the input shaft of the transmission system to be detected; MotSpd 计算值 is the calculated value of the rotational speed of the input shaft of the vehicle motor; MotSpd is the measured value of the current rotational speed of the input shaft of the motor; EngSpd 计算值 is the calculated value of the rotational speed of the input shaft of the vehicle engine; EngSpd is the measured value of the current rotational speed of the input shaft of the engine.

[0090] Compare the calculated difference with the preset threshold to determine whether it exceeds the preset threshold. Among them, the preset threshold can be determined corresponding thresholds according to different transmission systems in advance, or can be determined corresponding thresholds according to a preset ratio of the rotational speed of the engine or the motor. This application does not make a limit on this.

[0091] When the deviation is greater than the preset threshold, control the transmission system to be detected to stop running. Specifically, when the transmission system to be detected is a motor transmission system, when the deviation is greater than the preset threshold, it means that the motor transmission system is damaged. When the vehicle is a two-wheel drive vehicle, prohibit the motor transmission system from outputting power. Since the two-wheel drive model has no power, control the vehicle to gradually stop; when the vehicle is a four-wheel drive vehicle, prohibit the motor transmission system from outputting power. If a single shaft fails, since the four-wheel drive model still has power on one shaft for low-speed driving, control the vehicle speed to remain at a specific vehicle speed to meet vehicle movement and rescue. When the transmission system to be detected is an engine transmission system, turn off the engine and control the vehicle to stop; when the transmission system to be detected is a motor transmission system, turn off the engine and control the generator to stop running. Furthermore, protect the vehicle by timely cutting off the corresponding power, and avoid the occurrence of damage expansion and secondary damage caused by the idling of the power system.

[0092] In addition, in the present application, the fault condition of the vehicle's transmission system is monitored according to a preset time. When the deviation is greater than a preset threshold, a fault prompt is issued, and the vehicle state at the fault moment is recorded by the whole vehicle to achieve fault recording.

[0093] The beneficial effects of the present application are as follows: During the driving process of the vehicle, the to-be-detected transmission system participating in driving is determined; a preset index for calculating the calculated value of the input shaft speed of the to-be-detected transmission system is obtained; the calculated value of the input shaft speed of the to-be-detected transmission system is determined according to the preset index; it is judged whether the deviation between the calculated value of the input shaft speed of the to-be-detected transmission system and the measured value of the input shaft speed of the to-be-detected transmission system is greater than a preset threshold; when the deviation is greater than the preset threshold, it indicates that a fault has occurred in the vehicle's transmission system. Thus, by comparing the calculated value and the measured value of the input shaft speed of the transmission system, the transmission system fault can be detected in a timely manner. At this time, the to-be-detected transmission system is controlled to stop operating, avoiding the occurrence of the expansion of the transmission system damage and secondary damage caused by the idling of the power system, and avoiding the damage of the vehicle components.

[0094] In one embodiment, the above step S102 can be implemented as the following steps A1 - A3:

[0095] In step A1, when the to-be-detected transmission system is a motor transmission system, the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels are obtained.

[0096] In step A2, when the to-be-detected transmission system is an engine transmission system, the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels are obtained.

[0097] In step A3, when the to-be-detected transmission system is a generator transmission system, the reduction ratio corresponding to the current gear where the engine and the motor are connected and the reduction ratio of the main reducer are obtained.

[0098] In one embodiment, when the to-be-detected transmission system is a motor transmission system or an engine transmission system, the above step S103 can be implemented as the following steps:

[0099] Substitute the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into the first preset formula to determine the calculated value of the input shaft speed of the vehicle's corresponding transmission system.

[0100] In one embodiment, the substituting the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into the first preset formula to determine the calculated value of the input shaft speed of the vehicle's corresponding transmission system includes:

[0101] Substitute the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the rotational speeds of the left and right drive wheels into the following first preset formula to determine the calculated value of the rotational speed of the input shaft of the vehicle's transmission system:

[0102]

[0103] Wherein, VS1 and VS2 are the rotational speeds of the current two left and right drive wheels respectively; A is the reduction ratio corresponding to the current gear, B is the reduction ratio of the main reducer; R is the wheel radius; π is the ratio of the circumference of a circle to its diameter.

[0104] Specifically, for a pure electric vehicle model, the corresponding transmission system is an electric motor transmission system. Assuming the vehicle gear is in the drive gear position, the calculated value of the rotational speed of the input shaft of the vehicle's corresponding transmission system is determined by the following formula:

[0105]

[0106] Wherein, MotSpd 计算值 is the calculated value of the rotational speed of the input shaft of the vehicle's electric motor; VS1 and VS2 are the rotational speeds of the current two left and right drive wheels respectively; A is the reduction ratio corresponding to the current gear (for a power system without a reducer, the reduction ratio A is 1), B is the reduction ratio of the main reducer; R is the wheel radius; π is the ratio of the circumference of a circle to its diameter.

[0107] Similarly, for a pure fuel vehicle model or a hybrid vehicle model in which the engine participates in driving, the vehicle's transmission system is a generator transmission system. Assuming the vehicle gear is in the drive gear position, the calculated value of the rotational speed of the input shaft of the vehicle's corresponding transmission system is determined by the following formula:

[0108]

[0109] Wherein, EngSpd 计算值 is the calculated value of the rotational speed of the input shaft of the vehicle's engine; VS1 and VS2 are the rotational speeds of the current two left and right drive wheels respectively; A is the reduction ratio corresponding to the current gear (for a power system without a reducer, the reduction ratio A is 1), B is the reduction ratio of the main reducer; R is the wheel radius; π is the ratio of the circumference of a circle to its diameter.

[0110] In one embodiment, when the transmission system to be detected is a generator transmission system, step S103 above can be implemented as the following steps:

[0111] Substitute the reduction ratio corresponding to the current gear and the reduction ratio of the main reducer where the engine and the electric motor are connected into the second preset formula to determine the calculated value of the rotational speed of the input shaft of the vehicle's transmission system.

[0112] In this embodiment, for a pure fuel vehicle model or a hybrid vehicle model in which the engine participates in driving, the vehicle's transmission system is a generator transmission system. Assuming the vehicle gear is in the drive gear position, the calculated value of the rotational speed of the input shaft of the vehicle's corresponding transmission system is determined by the following formula:

[0113] MotSpd 计算值 = EngSpd * A * B

[0114] Wherein, MotSpd 计算值 is the calculated value of the rotational speed of the input shaft of the vehicle motor; EngSpd is the measured value of the rotational speed of the input shaft of the current engine; A is the reduction ratio corresponding to the current gear when the engine and the motor are connected (the reduction ratio A of the power system without a speed reducer is 1), and B is the reduction ratio of the main speed reducer.

[0115] In one embodiment, when the transmission system to be detected is a motor transmission system, the above step S105 can be implemented as the following steps B1 - B2:

[0116] In step B1, when the vehicle is a two-wheel drive vehicle, the motor transmission system is prohibited from outputting power, and the vehicle is controlled to gradually stop;

[0117] In step B2, when the vehicle is a four-wheel drive vehicle, the motor transmission system is prohibited from outputting power, and the vehicle speed is controlled to remain at a specific vehicle speed.

[0118] In one embodiment, when the transmission system to be detected is an engine transmission system, the above step S105 can be implemented as the following steps C1 - C2:

[0119] In step C1, the engine is turned off, and the vehicle is controlled to stop;

[0120] When the transmission system to be detected is a motor transmission system, the above step S105 can be implemented as the following step D4:

[0121] In step C2, the engine is turned off, and the generator is controlled to stop running.

[0122] Figure 3 is a schematic structural diagram of a transmission system control device in an embodiment of the present application, as Figure 3 shown, the device includes:

[0123] The first determination module 301 is configured to determine the transmission system to be detected that participates in driving during the vehicle driving process;

[0124] The acquisition module 302 is configured to acquire a preset index for calculating the calculated value of the rotational speed of the input shaft of the transmission system to be detected, wherein the preset index at least includes the reduction ratio corresponding to the current gear;

[0125] The second determination module 303 is configured to determine the calculated value of the rotational speed of the input shaft of the transmission system to be detected according to the preset index;

[0126] A judgment module 304, configured to judge whether the deviation between the calculated value of the input shaft speed of the to-be-detected transmission system and the measured value of the input shaft speed of the to-be-detected transmission system is greater than a preset threshold;

[0127] A control module 305, configured to control the to-be-detected transmission system to stop running when the deviation is greater than the preset threshold.

[0128] In one embodiment, the obtaining module includes:

[0129] A first obtaining sub-module, configured to obtain the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels when the to-be-detected transmission system is a motor transmission system;

[0130] A second obtaining sub-module, configured to obtain the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels when the to-be-detected transmission system is an engine transmission system;

[0131] A third obtaining sub-module, configured to obtain the reduction ratio corresponding to the current gear and the reduction ratio of the main reducer when the to-be-detected transmission system is a generator transmission system and the current gear where the engine and the motor are connected.

[0132] In one embodiment, when the to-be-detected transmission system is a motor transmission system or an engine transmission system, the second determination module is further configured to:

[0133] Substitute the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into a first preset formula to determine the calculated value of the input shaft speed of the corresponding transmission system of the vehicle.

[0134] In one embodiment, the substituting the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into the first preset formula to determine the calculated value of the input shaft speed of the corresponding transmission system of the vehicle includes:

[0135] Substitute the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into the following first preset formula to determine the calculated value of the input shaft speed of the corresponding transmission system of the vehicle:

[0136]

[0137] Wherein, VS1 and VS2 are respectively the wheel speeds of the current two left and right drive wheels; A is the reduction ratio corresponding to the current gear, B is the reduction ratio of the main reducer; R is the wheel radius; and π is the pi.

[0138] In one embodiment, when the to-be-detected transmission system is a generator transmission system, the second determination module is further configured to:

[0139] Substitute the reduction ratio corresponding to the current gear connecting the engine and the motor and the reduction ratio of the main reducer into the second preset formula to determine the calculated value of the rotational speed of the input shaft of the vehicle's transmission system.

[0140] In one embodiment, when the transmission system to be detected is an electric motor transmission system, the control module includes:

[0141] A first control sub-module, configured to prohibit the electric motor transmission system from outputting power and control the vehicle to gradually stop when the vehicle is a two-wheel drive vehicle;

[0142] A second control sub-module, configured to prohibit the electric motor transmission system from outputting power and control the vehicle speed to maintain at a specific vehicle speed when the vehicle is a four-wheel drive vehicle.

[0143] In one embodiment, when the transmission system to be detected is an engine transmission system, the control module includes:

[0144] A third control sub-module, configured to shut down the engine and control the vehicle to stop;

[0145] When the transmission system to be detected is an electric motor transmission system, the control module includes:

[0146] A fourth control sub-module, configured to shut down the engine and control the generator to stop operating.

[0147] Figure 4 This is a schematic hardware structure diagram of a transmission system control device in an embodiment of the present application. As Figure 4 shown, the transmission system control device includes:

[0148] At least one processor 420; and,

[0149] A memory 404 communicatively connected to the at least one processor 420; wherein,

[0150] The memory 404 stores instructions executable by the at least one processor 420, and the instructions are executed by the at least one processor 420 to implement the transmission system control method described in any of the above embodiments.

[0151] Referring to Figure 4 , the transmission system control device 400 may include one or more of the following components: a processing component 402, a memory 404, a power supply component 406, a multimedia component 408, an audio component 410, an input / output (I / O) interface 412, a sensor component 414, and a communication component 416.

[0152] The processing component 402 generally controls the overall operation of the powertrain control device 400. The processing component 402 may include one or more processors 420 to execute instructions to complete all or part of the steps of the above-described methods. In addition, the processing component 402 may include one or more modules to facilitate the interaction between the processing component 402 and other components. For example, the processing component 402 may include a multimedia module to facilitate the interaction between the multimedia component 408 and the processing component 402.

[0153] The memory 404 is configured to store various types of data to support the operation of the powertrain control device 400. Examples of such data include instructions for any application or method operating on the powertrain control device 400, such as text, pictures, videos, etc. The memory 404 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0154] The power supply component 406 provides power to various components of the powertrain control device 400. The power supply component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the powertrain control device 400.

[0155] The multimedia component 408 includes a screen that provides an output interface between the powertrain control device 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of touch or swipe actions, but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 408 may also include a front camera and / or a rear camera. When the powertrain control device 400 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each of the front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capabilities.

[0156] The audio component 410 is configured to output and / or input audio signals. For example, the audio component 410 includes a microphone (MIC) that is configured to receive external audio signals when the drive system control device 400 is in an operating mode such as an alarm mode, a recording mode, a voice recognition mode, and a voice output mode. The received audio signals can be further stored in the memory 404 or transmitted via the communication component 416. In some embodiments, the audio component 410 further includes a speaker for outputting audio signals.

[0157] The I / O interface 412 provides an interface between the processing component 402 and a peripheral interface module, and the peripheral interface module can be a keyboard, a click wheel, buttons, etc. These buttons can include, but are not limited to: a home button, a volume button, a start button, and a lock button.

[0158] The sensor component 414 includes one or more sensors for providing a status assessment of various aspects of the drive system control device 400. For example, the sensor component 414 can include a sound sensor. Additionally, the sensor component 414 can detect the on / off state of the drive system control device 400, the relative positioning of components, such as the display and keypad of the drive system control device 400. The sensor component 414 can also detect the operating state of the drive system control device 400 or a component of the drive system control device 400, such as the operating state of the air distribution plate, the structural state, the operating state of the discharge scraper, etc., the orientation of the drive system control device 400 or acceleration / deceleration, and the temperature change of the drive system control device 400. The sensor component 414 can include a proximity sensor that is configured to detect the presence of nearby objects without any physical contact. The sensor component 414 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 414 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, a material accumulation thickness sensor, or a temperature sensor.

[0159] The communication component 416 is configured to enable the drive system control device 400 to provide communication capabilities with other devices and cloud platforms in a wired or wireless manner. The drive system control device 400 can access a wireless network based on communication standards. In an exemplary embodiment, the communication component 416 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0160] In an exemplary embodiment, the drive system control device 400 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components, and is used to execute the drive system control method described in any of the above embodiments.

[0161] The present application also provides a computer-readable storage medium. When the instructions in the storage medium are executed by a processor corresponding to the drive system control device, the drive system control device can implement the drive system control method described in any of the above embodiments.

[0162] Those skilled in the art should understand that the embodiments of the present application may be provided as a method, a system, or a computer program product. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

[0163] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in Figure 1 one or more of the processes Figure 1 or multiple processes and / or blocks

[0164] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device realizes the functions specified in Figure 1 one or more of the processes Figure 1 or multiple processes and / or blocks

[0165] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are performed on the computer or other programmable apparatus to generate a computer-implemented process, thereby providing instructions for implementing the process Figure 1 in one process or a plurality of processes and / or blocks Figure 1 steps for the functions specified in one block or a plurality of blocks.

[0166] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A control method for a transmission system, characterized in that, Comprising: During vehicle driving, determining a to-be-detected drive system participating in driving; Obtaining a preset index for calculating a calculated value of the input shaft speed of the to-be-detected drive system, wherein the preset index at least includes a reduction ratio corresponding to the current gear; Determining a calculated value of the input shaft speed of the to-be-detected drive system according to the preset index; Judging whether the deviation between the calculated value of the input shaft speed of the to-be-detected drive system and the measured value of the input shaft speed of the to-be-detected drive system is greater than a preset threshold; When the deviation is greater than the preset threshold, controlling the to-be-detected drive system to stop operating.

2. The method according to claim 1 or, characterized in that, The obtaining a preset index for calculating a calculated value of the input shaft speed of the to-be-detected drive system includes: When the to-be-detected drive system is a motor drive system, obtaining the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels; When the to-be-detected drive system is an engine drive system, obtaining the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels; When the to-be-detected drive system is a generator drive system, obtaining the reduction ratio corresponding to the current gear and the reduction ratio of the main reducer when the engine is connected to the motor.

3. The method according to claim 1, characterized in that When the to-be-detected drive system is a motor drive system or an engine drive system, the determining a calculated value of the input shaft speed of the corresponding drive system of the vehicle according to the preset index includes: Substituting the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into a first preset formula to determine a calculated value of the input shaft speed of the corresponding drive system of the vehicle.

4. The method according to claim 3, characterized in that The substituting the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into a first preset formula to determine a calculated value of the input shaft speed of the corresponding drive system of the vehicle includes: Substituting the reduction ratio corresponding to the current gear, the reduction ratio of the main reducer, and the wheel speeds of the left and right drive wheels into the following first preset formula to determine a calculated value of the input shaft speed of the corresponding drive system of the vehicle: Wherein, VS1 and VS2 are respectively the wheel speeds of the current two left and right drive wheels; A is the reduction ratio corresponding to the current gear, B is the reduction ratio of the main reducer; R is the wheel radius; π is the pi.

5. The method according to claim 1, wherein When the to-be-detected drive system is a generator drive system, the determining a calculated value of the input shaft speed of the corresponding drive system of the vehicle according to the preset index includes: Substituting the reduction ratio corresponding to the current gear and the reduction ratio of the main reducer when the engine is connected to the motor into a second preset formula to determine a calculated value of the input shaft speed of the corresponding drive system of the vehicle.

6. The method according to claim 1, wherein When the to-be-detected drive system is a motor drive system, the controlling the to-be-detected drive system to stop operating includes: When the vehicle is a two-wheel drive vehicle, prohibiting the motor drive system from outputting power, and controlling the vehicle to gradually stop; When the vehicle is a four-wheel drive vehicle, prohibiting the motor drive system from outputting power, and controlling the vehicle speed to be maintained at a specific vehicle speed.

7. The method according to claim 1, characterized in that When the to-be-detected drive system is an engine drive system, the controlling the to-be-detected drive system to stop operating includes: Turning off the engine, and controlling the vehicle to stop; When the to-be-detected drive system is a motor drive system, the controlling the to-be-detected drive system to stop operating includes: Turning off the engine, and controlling the generator to stop running.

8. A control device for a transmission system, characterized in that, Comprising: A first determination module, configured to determine a to-be-detected transmission system participating in driving during vehicle driving; An acquisition module, configured to acquire a preset index for calculating a calculated value of the input shaft speed of the to-be-detected transmission system, where the preset index at least includes a reduction ratio corresponding to the current gear; A second determination module, configured to determine a calculated value of the input shaft speed of the to-be-detected transmission system according to the preset index; A judgment module, configured to judge whether a deviation between the calculated value of the input shaft speed of the to-be-detected transmission system and a measured value of the input shaft speed of the to-be-detected transmission system is greater than a preset threshold; A control module, configured to control the to-be-detected transmission system to stop operating when the deviation is greater than the preset threshold.

9. A control device for a transmission system, characterized in that, Comprising: At least one processor; And, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to implement the transmission system control method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor corresponding to the transmission system control device, the transmission system control device can implement the transmission system control method according to any one of claims 1-7.

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