Method and device for determining and processing failure state of one-way clutch, equipment and storage medium

Abstract

The invention discloses a one-way clutch failure state determining and processing method, device and equipment and a storage medium, relates to the technical field of one-way clutch state diagnosis, and discloses a one-way clutch failure state determining and processing method. Comprising the steps that the driving end actual rotating speed and the driving end target rotating speed of the one-way clutch, the driven end actual rotating speed of the one-way clutch and the function state of the one-way clutch are obtained; the failure state of the one-way clutch is determined through at least two of the driving end actual rotating speed, the driven end actual rotating speed and the driving end target rotating speed based on the function state; and selecting a preset failure processing mechanism according to the failure state, and processing the failure state according to the preset failure processing mechanism. Accurate judgment on the failure state of the one-way clutch is achieved by monitoring the actual rotating speed, the target rotating speed and the function state of the driving end and the driven end of the one-way clutch, and a processing mechanism is applied according to the judgment result so as to improve the reliability and safety of an automobile transmission system.

Description

Technical Field

[0001] The present application relates to the technical field of one-way clutch state diagnosis, and in particular to a method, device, equipment and storage medium for determining and processing the failure state of a one-way clutch. Background Art

[0002] A one-way clutch refers to a transmission mechanism that can only work in one direction. The active end of the one-way clutch is generally connected to a power source such as an engine or a drive motor, and the passive end of the one-way clutch is generally connected to the wheel end. The roller of the one-way clutch can roll in the wedge-shaped groove between the active end and the passive end. In automobiles, industrial machinery and other systems that require precise control of power transmission, one-way clutches can prevent accidents caused by reverse torque and improve the safety of the overall system. Therefore, it is very necessary to monitor and handle the failure state of the one-way clutch.

[0003] However, one-way clutches are often not equipped with position sensors to measure the actual position of the rollers, and lack comprehensive consideration of the speed and functional status of the active and passive ends of the one-way clutch. Therefore, it may not be possible to accurately diagnose the failure state of the clutch, nor to take effective treatment measures in time in the vehicle transmission system to prevent further damage to the system and avoid potential safety hazards.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present application is to provide a method, device, equipment and storage medium for determining and processing the failure state of a one-way clutch, aiming to solve the technical problem that the failure state of a one-way clutch cannot be accurately diagnosed and processed.

[0006] To achieve the above objectives, the present application proposes a method for determining and processing a failure state of a one-way clutch, the method comprising:

[0007] Acquire the active end actual speed and active end target speed of the one-way clutch, the passive end actual speed of the one-way clutch, and the functional state of the one-way clutch;

[0008] Determine the failure state of the one-way clutch based on the functional state through at least two of the actual speed of the active end, the actual speed of the passive end, and the target speed of the active end;

[0009] A preset failure processing mechanism is selected according to the failure state, and the failure state is processed according to the preset failure processing mechanism.

[0010] In one embodiment, the step of determining the failure state of the one-way clutch based on the functional state through at least two of the actual speed of the active end, the actual speed of the passive end, and the target speed of the active end includes:

[0011] When the functional state is a separation state, obtaining a first rotation speed threshold and a first time threshold;

[0012] Obtaining a first speed difference according to the active end target speed and the passive end actual speed;

[0013] When the first speed difference is greater than the first speed threshold, comparing the actual speed of the active end with the actual speed of the passive end;

[0014] When the actual speed of the active end is less than or equal to the actual speed of the passive end and the duration is the first time threshold, it is determined that the failure state of the one-way clutch is a separation failure state.

[0015] In one embodiment, the step of determining the failure state of the one-way clutch based on the functional state through at least two of the active end actual speed, the passive end actual speed, and the active end target speed further includes:

[0016] When the functional state is a combined state, obtaining a second rotation speed threshold;

[0017] Obtaining a second speed difference according to the actual speed of the active end and the actual speed of the passive end;

[0018] When the second speed difference is greater than the second speed threshold, it is determined that the failure state of the one-way clutch is a coupled failure state.

[0019] In one embodiment, the step of selecting a preset failure processing mechanism according to the failure state and processing the failure state according to the preset failure processing mechanism includes:

[0020] When the failure state is a combined failure state, selecting a first preset failure processing mechanism;

[0021] According to the first preset failure processing mechanism, obtaining a first preset input torque and a first preset vehicle speed of the active end;

[0022] Controlling the input torque of the active end to be less than the first preset input torque, controlling the vehicle speed to be less than the first preset vehicle speed, and opening the one-way clutch at the same time;

[0023] Generate presets combined with failure causes and issue prompts to users.

[0024] In one embodiment, the step of selecting a preset failure processing mechanism according to the failure state and processing the failure state according to the preset failure processing mechanism includes:

[0025] When the failure state is a separation failure state, selecting a second preset failure processing mechanism;

[0026] According to the second preset failure processing mechanism, obtaining a second preset input torque and a second preset vehicle speed of the active end;

[0027] Controlling the input torque of the active end to be less than the second preset input torque, and controlling the vehicle speed to be less than the second preset vehicle speed;

[0028] determining a category of the driver, and shutting down the engine when the category is an engine;

[0029] Generates preset separation failure reasons and issues prompts to the user.

[0030] In one embodiment, the step of obtaining the active end actual speed and active end target speed of the one-way clutch, the passive end actual speed of the one-way clutch, and the functional state of the one-way clutch includes:

[0031] Acquire an actual speed of the active end of the one-way clutch, an actual speed of the passive end of the one-way clutch, a third speed threshold, and a functional status instruction of a domain controller;

[0032] Obtaining a target speed of the active end according to the actual speed of the passive end and the third speed threshold;

[0033] According to the functional status instruction of the domain controller, an actual current of the driving motor, a target current of the driving motor, a first current threshold, a second current threshold, a second time threshold and a third time threshold are acquired, wherein the first current threshold is greater than the second current threshold;

[0034] Obtaining a current current deviation according to the actual current and the target current, and determining that the functional state of the one-way clutch is a coupled state when the current current deviation is less than or equal to the first current threshold and lasts for the second time threshold;

[0035] When the actual current is less than the second current threshold and lasts for the third time threshold, it is determined that the functional state of the one-way clutch is a disengaged state.

[0036] In one embodiment, the step of obtaining the actual speed of the active end of the one-way clutch and the actual speed of the passive end of the one-way clutch comprises:

[0037] Obtaining a rotation speed of a preset driver, a first rotation speed ratio from the preset driver to the active end, a current vehicle speed, a radius of a wheel, and a second rotation speed ratio from the passive end to the wheel;

[0038] Obtaining an actual rotational speed of the active end of the one-way clutch according to the rotational speed of the preset driver and the first rotational speed ratio;

[0039] The actual rotational speed of the passive end of the one-way clutch is obtained according to the current vehicle speed, the radius of the wheel and the second rotational speed ratio.

[0040] In addition, to achieve the above-mentioned purpose, the present application also proposes a one-way clutch failure state determination and processing device, the one-way clutch failure state determination and processing device comprising: an acquisition module, used to acquire the active end actual speed and active end target speed of the one-way clutch, the passive end actual speed of the one-way clutch, and the functional state of the one-way clutch;

[0041] A determination module, configured to determine the failure state of the one-way clutch based on the functional state through at least two of the active end actual speed, the passive end actual speed, and the active end target speed;

[0042] A processing module is used to select a preset failure processing mechanism according to the failure state, and process the failure state according to the preset failure processing mechanism.

[0043] In addition, to achieve the above-mentioned purpose, the present application also proposes a one-way clutch failure state determination and processing device, the device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the one-way clutch failure state determination and processing method as described above.

[0044] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of determining and processing the failure state of the one-way clutch as described above are implemented.

[0045] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the method for determining and processing the failure state of the one-way clutch as described above are implemented.

[0046] One or more technical solutions proposed in this application have at least the following technical effects:

[0047] By adopting technical means for obtaining the actual speed and target speed of the active end of the one-way clutch, the actual speed of the passive end and the functional status of the clutch, the problem in the prior art that it is impossible to integrate multiple key parameters for accurate failure diagnosis is solved. Compared with the prior art, a more accurate one-way clutch failure status judgment is achieved, so that the preset processing mechanism can be selected and executed in time, thereby improving the stability and safety of the automobile transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0049] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0050] Figure 1 A flow chart of a method for determining and handling the failure state of a one-way clutch according to an embodiment of the present invention;

[0051] Figure 2 A schematic diagram of the one-way clutch structure provided in Example 1 of the method for determining and processing the failure state of the one-way clutch of the present application;

[0052] Figure 3 A schematic diagram of a one-way clutch engagement state provided in Embodiment 1 of the method for determining and processing the failure state of a one-way clutch of the present application;

[0053] Figure 4 A schematic diagram of a one-way clutch disengagement state provided in Embodiment 1 of the method for determining and processing the failure state of the one-way clutch of the present application;

[0054] Figure 5 A flow chart of a second embodiment of a method for determining and handling a failure state of a one-way clutch of the present application;

[0055] Figure 6 A schematic diagram of a brief flow chart of a method for determining and processing a failure state of a one-way clutch provided in the second embodiment of the present application;

[0056] Figure 7 A schematic diagram of the module structure of a device for determining and processing the failure state of a one-way clutch according to an embodiment of the present application;

[0057] Figure 8 Schematic diagram of the device structure of the hardware operating environment involved in the method for determining and processing the failure state of the one-way clutch in the embodiment of the present application.

[0058] Description of Figure Numbers:

[0059] Active end 1; roller 2; return spring 3; passive end 4.

[0060] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0061] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0062] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0063] The main solution of the embodiment of the present application is: obtaining the active end actual speed and active end target speed of the one-way clutch, the passive end actual speed of the one-way clutch and the functional state of the one-way clutch;

[0064] Determine the failure state of the one-way clutch based on the functional state through at least two of the actual speed of the active end, the actual speed of the passive end, and the target speed of the active end;

[0065] A preset failure processing mechanism is selected according to the failure state, and the failure state is processed according to the preset failure processing mechanism.

[0066] In this embodiment, for the convenience of description, the following description is made by taking the device for identifying the failure state of the one-way clutch and processing the device as the execution subject.

[0067] Since the existing technology is unable to accurately diagnose and process the failure state of the one-way clutch, the present application provides a solution, which adopts technical means to obtain the actual speed and target speed of the active end of the one-way clutch, the actual speed of the passive end and the functional state of the clutch, thereby solving the problem that the existing technology cannot integrate multiple key parameters for accurate failure diagnosis. Compared with the existing technology, a more accurate judgment of the failure state of the one-way clutch is achieved, so that the preset processing mechanism can be selected and executed in time, thereby improving the stability and safety of the automobile transmission system.

[0068] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a one-way clutch failure state determination and processing device, etc. The following takes the one-way clutch failure state determination and processing device as an example to illustrate this embodiment and the following embodiments.

[0069] Based on this, the present application embodiment provides a method for determining and processing the failure state of a one-way clutch, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the method for determining and processing the failure state of a one-way clutch of the present application.

[0070] In this embodiment, the method for determining and processing the failure state of the one-way clutch includes steps S10 to S30:

[0071] Step S10, acquiring the active end actual speed and active end target speed of the one-way clutch, the passive end actual speed of the one-way clutch, and the functional state of the one-way clutch;

[0072] It should be noted that the actual speed of the active end of the one-way clutch refers to the actual current rotation speed of the active end of the one-way clutch, which is usually expressed in revolutions per minute (RPM). If the active end is equipped with a speed sensor, the sensor data is read directly; if there is no sensor, it may need to be calculated indirectly by other means, such as by the speed of the drive connected to the active end, such as a motor or engine.

[0073] Reference Figure 2 , Figure 2 This is a simplified structural diagram of a one-way clutch according to the first embodiment of the method for determining and processing the failure state of the one-way clutch of the present application.

[0074] like Figure 2 As shown, the active end 1 is generally connected to a power source such as an engine or a drive motor, and the passive end 4 is generally connected to the wheel end. The roller 2 can roll in the wedge-shaped groove between the active end and the passive end. The roller 2 is a component that can roll freely in the wedge-shaped groove. The function of the return spring 3 is to pull the roller 2 from the narrow side of the wedge-shaped groove back to the wide side position through its elastic force when the one-way clutch needs to be separated, so that the one-way clutch is converted from the engaged state to the separated state.

[0075] In addition, it should be noted that the active end target speed is the ideal speed that the active end of the one-way clutch should reach under specific operating conditions. The setting of the target speed is usually based on the design parameters and operating requirements of the clutch.

[0076] It should be noted that the actual speed of the passive end indicates the actual speed of the passive end of the one-way clutch at present. If the passive end is equipped with a speed sensor, the sensor data is directly read; if there is no sensor, it may need to be indirectly calculated through the vehicle speed and the relevant transmission ratio.

[0077] In addition, it should be noted that the functional state of the one-way clutch refers to the current working state of the one-way clutch, which is usually divided into an engaged state and a disengaged state.

[0078] Reference Figure 3 , Figure 3 This is a schematic diagram of the one-way clutch engagement state of the first embodiment of the one-way clutch failure state determination and processing method of the present application.

[0079] like Figure 3 As shown, when the roller is at the narrow side of the wedge-shaped groove, the one-way clutch is in a engaged state, and the active end can drive the passive end in one direction.

[0080] Reference Figure 4 , Figure 4 This is a schematic diagram of the disengaged state of a one-way clutch according to the first embodiment of the method for determining and processing the failure state of a one-way clutch of the present application.

[0081] like Figure 4 As shown, when the roller is on the wide side of the wedge-shaped groove, the one-way clutch is in a disengaged state, and the active end and the passive end are in a decoupled state.

[0082] It is understandable that the determination of the combined state is based on whether the difference between the actual current of the drive motor and the target current is within a preset current threshold, and this state is maintained for a certain time threshold. The determination of the separated state is based on whether the actual current of the drive motor is less than another preset current threshold and is maintained for a certain time.

[0083] In a feasible implementation, step S10 may include steps S11 to S15:

[0084] Step S11, acquiring the actual speed of the active end of the one-way clutch, the actual speed of the passive end of the one-way clutch, a third speed threshold, and a functional status instruction of the domain controller;

[0085] It should be noted that the third speed threshold is a preset speed difference, which is usually set to a smaller value to ensure that the speed of the active end of the clutch does not exceed that of the passive end by too much before the clutch is engaged. In this embodiment, the third speed threshold ranges from 5 to 10 RPM.

[0086] In addition, it should be noted that the functional status instruction of the domain controller is an instruction issued by the vehicle's central control unit or domain controller, indicating whether the clutch should be in an engaged state or a disengaged state. The status instruction is issued by the domain controller based on the vehicle's operating requirements and driving conditions.

[0087] In a feasible implementation, step S11 may include steps S111 to S113:

[0088] Step S111, obtaining the rotation speed of the preset driver, the first rotation speed ratio from the preset driver to the active end, the current vehicle speed, the radius of the wheel, and the second rotation speed ratio from the passive end to the wheel;

[0089] It should be noted that the preset drive speed refers to the rotational speed of the drive (such as an engine or motor) connected to the active end of the one-way clutch. This speed is a direct measurement of the drive output and is usually expressed in revolutions per minute (RPM). The first speed ratio is the transmission ratio from the preset drive to the active end of the one-way clutch. The speed ratio is a numerical value that represents the proportional relationship between the drive speed and the active end speed. The current vehicle speed refers to the current driving speed of the vehicle. The radius of the wheel refers to the radius of the vehicle wheel, which is the straight-line distance from the center of the wheel to the edge of the rim. The second speed ratio is the transmission ratio from the passive end of the clutch to the wheel axle.

[0090] Step S112, obtaining the actual rotational speed of the active end of the one-way clutch according to the preset rotational speed of the driver and the first rotational speed ratio;

[0091] It can be understood that the actual speed of the driving end is the ratio of the driver output speed and the speed ratio, which can be expressed as actual speed = driver output speed / speed ratio.

[0092] Step S113, obtaining the actual rotational speed of the passive end of the one-way clutch according to the current vehicle speed, the radius of the wheel and the second rotational speed ratio.

[0093] It can be understood that the product of the current vehicle speed and the second rotation speed ratio is obtained first, and the actual speed of the passive end refers to the ratio of this product and the radius of the wheel, which can be expressed as actual speed of the passive end = vehicle speed * speed ratio / wheel rolling radius.

[0094] Step S12, obtaining a target speed of the active end according to the actual speed of the passive end and the third speed threshold;

[0095] It is understandable that the target speed of the active end is calculated by subtracting the third speed threshold from the actual speed of the passive end to obtain the target speed of the active end, which can be expressed as: target speed of the active end = actual speed of the passive end - third speed threshold.

[0096] Step S13, acquiring an actual current of a driving motor, a target current of a driving motor, a first current threshold, a second current threshold, a second time threshold, and a third time threshold according to the functional status instruction of the domain controller, wherein the first current threshold is greater than the second current threshold;

[0097] It should be noted that the actual current of the drive motor refers to the actual current consumption of the drive motor at a specific moment. The target current of the drive motor is the ideal current level that the motor should reach under specific operating conditions, such as when the clutch is engaged or disengaged. The target current is usually set based on the design parameters and operating requirements of the motor.

[0098] In addition, it should be noted that the first current threshold is a preset current difference value, which is used to determine the functional state of the one-way clutch, and the second current threshold is another preset current difference value, which is also used to determine the functional state of the one-way clutch, and the second current threshold is usually smaller than the first current threshold value. In this embodiment, the range of the first current threshold is 0.1A to 0.2A; the range of the second current threshold is 0.05A to 0.08A.

[0099] It should be noted that the second time threshold and the third time threshold are time parameters used to determine the length of time that the current deviation or a specific state needs to be maintained. If a condition persists within a set time, further action may be taken. In this embodiment, the range of the second time threshold is 0.2s to 0.5s; the range of the third time threshold is 0.3s to 0.5s.

[0100] Step S14, obtaining a current current deviation according to the actual current and the target current, and determining that the functional state of the one-way clutch is a coupled state when the current current deviation is less than or equal to the first current threshold and lasts for the second time threshold;

[0101] It should be noted that the current deviation refers to the difference between the actual current and the target current. The current deviation is an important indicator for judging whether the working state of the motor meets expectations.

[0102] It can be understood that when the difference between the actual current of the driving motor and the engagement target current is within the first current threshold and the maintenance time is greater than the second time threshold, the one-way clutch is in the engagement state.

[0103] Step S15: when the actual current is less than the second current threshold and lasts for the third time threshold, determining that the functional state of the one-way clutch is a disengaged state.

[0104] It can be understood that when the actual current of the driving motor is less than the third time threshold and the maintenance time is greater than the third time threshold, the one-way clutch is in a disengaged state.

[0105] Step S20, determining the failure state of the one-way clutch based on the functional state through at least two of the active end actual speed, the passive end actual speed, and the active end target speed;

[0106] It should be noted that the failure state of the one-way clutch refers to the situation where the one-way clutch cannot work normally according to the design requirements. The failure states of the one-way clutch include engagement failure and disengagement failure. Engagement failure means that when the actual working state of the clutch is engagement, the roller cannot be driven to the narrow side of the wedge groove, or the roller abnormally returns to the wide side of the wedge groove. Disengagement failure means that when the actual working state of the clutch is disengagement, the roller cannot return to the wide side of the wedge groove, or the roller is abnormally driven to drive the narrow side of the wedge groove. The causes of the failure of the one-way clutch include but are not limited to groove blockage, excessive load on both ends of the clutch, abnormal power failure or unexpected drive of the clutch drive motor, return spring elasticity failure, and excessive load on both ends of the clutch.

[0107] In addition, it can be understood that when the following conditions are met, the failure state judgment is entered: the clutch drive motor supply voltage is greater than a certain threshold, the relevant sensor for calculating the clutch speed has no faults, and the clutch actual state signal has no abnormalities.

[0108] In a feasible implementation, step S20 may include steps A21 to A24:

[0109] Step A21, when the functional state is a separation state, obtaining a first speed threshold and a first time threshold;

[0110] It should be noted that the first speed threshold is the upper limit of the speed difference used to determine whether the clutch is successfully disengaged. If the speed difference between the active end and the passive end is less than or equal to this threshold, the clutch may be considered to be fully disengaged. The first time threshold is a time parameter used to determine the length of time that the speed difference is lower than the first speed threshold. This time threshold ensures that the clutch is not disengaged instantaneously, but is stable and continuous.

[0111] Step A22, obtaining a first speed difference according to the active end target speed and the passive end actual speed;

[0112] It should be noted that the first speed difference refers to the difference between the target speed of the active end and the actual speed of the passive end.

[0113] Step A23, when the first speed difference is greater than the first speed threshold, comparing the actual speed of the active end with the actual speed of the passive end;

[0114] Step A24, when the actual speed of the active end is less than or equal to the actual speed of the passive end and the duration is the first time threshold, determining that the failure state of the one-way clutch is a separation failure state.

[0115] It is understandable that, as in step A23 to step A24, if the first speed difference is greater than the first speed threshold, the actual speed of the active end and the actual speed of the passive end will be directly compared. If the actual speed of the active end is less than or equal to the actual speed of the passive end, it will continue to monitor whether this state continues for the time length set by the first time threshold. If the actual speed of the active end continues to be less than or equal to the actual speed of the passive end within the time set by the first time threshold, the failure state of the one-way clutch will be determined to be a separation failure state.

[0116] In a feasible implementation, step S20 may include steps B21 to B23:

[0117] Step B21, when the functional state is the combined state, obtaining a second rotation speed threshold;

[0118] It should be noted that the second speed threshold is the upper limit of the speed difference used when judging whether the clutch is successfully engaged. If the speed difference between the active end and the passive end is less than or equal to this threshold, the clutch may be considered to be fully engaged.

[0119] Step B22, obtaining a second speed difference according to the actual speed of the active end and the actual speed of the passive end;

[0120] It should be noted that the second speed difference refers to the difference between the actual speed of the active end and the actual speed of the passive end.

[0121] Step B23: When the second speed difference is greater than the second speed threshold, determining that the failure state of the one-way clutch is a coupled failure state.

[0122] It can be understood that the calculated second speed difference is compared with the preset second speed threshold, and if the second speed difference is greater than the second speed threshold, the system will determine that the failure state of the one-way clutch is a combined failure state.

[0123] Step S30: selecting a preset failure processing mechanism according to the failure state, and processing the failure state according to the preset failure processing mechanism.

[0124] It should be noted that the preset failure handling mechanism is a predefined operation procedure used to take action when a failure state is detected to reduce the impact of the failure and protect the system.

[0125] It can be understood that selecting a preset failure handling mechanism according to the failure state, and handling the failure state according to the preset failure handling mechanism means actually executing the operation steps defined in the preset failure handling mechanism to respond to and alleviate the problems caused by the failure state.

[0126] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 5 The step S30 of the method for determining and processing the failure state of the one-way clutch includes steps S31 to S34:

[0127] Step S31, when the failure state is a combined failure state, selecting a first preset failure processing mechanism;

[0128] It should be noted that the first preset failure handling mechanism is a type of preset failure handling mechanism, which is a set of predefined operating steps or measures for taking actions when a combined failure state is detected.

[0129] Step S32, obtaining a first preset input torque and a first preset vehicle speed of the active end according to the first preset failure processing mechanism;

[0130] It should be noted that the first preset input torque is the torque upper limit set for the active end in the failure handling mechanism. The first preset vehicle speed is the vehicle speed upper limit set for the vehicle in the failure handling mechanism, and the control is combined with the failure state.

[0131] Step S33, controlling the input torque of the active end to be less than the first preset input torque, controlling the vehicle speed to be less than the first preset vehicle speed, and opening the one-way clutch at the same time;

[0132] It is understood that the torque transmitted to the active end of the clutch is less than the first preset input torque and the vehicle speed is reduced through the braking system or engine control, and the clutch control system is operated so that the one-way clutch is opened, thereby interrupting the power transmission between the active end and the passive end. Through such control measures, the clutch and the transmission system can be effectively protected to avoid further damage caused by coupling failure, and ensure that the vehicle runs at a safe speed until the clutch can be repaired or replaced.

[0133] Step S34, generating a preset combination failure reason and sending a prompt to the user.

[0134] It should be noted that the preset engagement failure reasons are a list of possible reasons that may lead to clutch engagement failure, determined based on preset diagnostic logic and historical data. These reasons usually include but are not limited to groove blockage, excessive load on both ends of the clutch, abnormal power failure or unexpected drive of the clutch drive motor, and return spring elasticity failure.

[0135] It is understood that prompting the user means providing information and suggestions about clutch engagement failure to the driver through the vehicle's user interface, such as the instrument panel, information display, or audio prompt system. These prompts are intended to notify the driver that there is a problem and may provide some basic guidance or suggestions.

[0136] In a feasible implementation manner, step S30 may further include steps A31 to A35:

[0137] Step A31, when the failure state is a separation failure state, selecting a second preset failure processing mechanism;

[0138] It should be noted that the second preset failure handling mechanism is a type of preset failure handling mechanism, which is a set of predefined operating steps or measures for taking actions when a separation failure state is detected.

[0139] Step A32, obtaining a second preset input torque and a second preset vehicle speed of the active end according to the second preset failure processing mechanism;

[0140] It should be noted that the second preset input torque is the torque upper limit set for the active end in the failure handling mechanism. The second preset vehicle speed is the vehicle speed upper limit set for the vehicle in the failure handling mechanism, which is used to control the separation failure state.

[0141] Step A33, controlling the input torque of the active end to be less than the second preset input torque, and controlling the vehicle speed to be less than the second preset vehicle speed;

[0142] It is understandable that the input torque of the active end is controlled to be less than the second preset input torque, and the vehicle speed is controlled to be less than the second preset vehicle speed. The purpose of these control measures is to reduce the load on the clutch and prevent damage caused by separation failure.

[0143] Step A34, determining the type of the driver, and if the type is an engine, shutting down the engine;

[0144] It is understandable that, by determining the category of the drive, if the drive is an engine, an operation of shutting down the engine will be performed. This is to prevent further damage to the already failed clutch due to continued operation of the engine.

[0145] Step A35, generating a preset separation failure reason and sending a prompt to the user.

[0146] It should be noted that the preset engagement failure reasons are a list of possible reasons that may lead to clutch engagement failure, determined based on preset diagnostic logic and historical data. These reasons usually include but are not limited to groove blocking, return spring elastic force failure, unexpected driving of the clutch drive motor, etc.

[0147] It is understood that prompting the user means providing information and suggestions about clutch engagement failure to the driver through the vehicle's user interface, such as the instrument panel, information display, or audio prompt system. These prompts are intended to notify the driver that there is a problem and may provide some basic guidance or suggestions.

[0148] This embodiment accurately monitors and analyzes the key parameters of the active and passive ends of the one-way clutch, such as the rotation speed and current threshold, and adopts a preset processing mechanism when a coupling failure or a separation failure is detected, including technical means to adjust the torque input, vehicle speed control and clutch operation, thereby solving the technical problem that the traditional one-way clutch cannot respond promptly and effectively in a failed state. By implementing these measures, this embodiment can reduce further damage to the clutch, ensure that the vehicle operates under safe conditions, and promptly notify the driver to take corresponding actions, thereby achieving the beneficial effect of improving the reliability, safety and driving experience of the vehicle transmission system. At the same time, this active prevention and response mechanism helps to reduce potential maintenance costs and avoid more serious mechanical failures, providing more comprehensive and intelligent protection for the vehicle.

[0149] For example, in order to help understand the implementation process of the one-way clutch failure state determination and processing method obtained by combining this embodiment with the above-mentioned embodiment 1, please refer to Figure 6 , Figure 6 A brief flow chart of a method for determining and handling a failure state of a one-way clutch is provided, specifically:

[0150] First, the diagnostic entry conditions are judged, then the target speed and actual speed of the clutch active end and the actual speed of the passive end are calculated, and the actual working state of the clutch is determined; then it is determined whether the one-way clutch has failed; if the diagnostic results indicate that the clutch has failed, the downgrade processing mechanism will be executed.

[0151] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the failure state determination and processing method of the one-way clutch of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0152] The present application also provides a one-way clutch failure state determination and processing device, please refer to Figure 7 , the one-way clutch failure state determination and processing device comprises:

[0153] An acquisition module 10 is used to acquire an actual speed of the active end of the one-way clutch and an active end target speed, an actual speed of the passive end of the one-way clutch, and a functional state of the one-way clutch;

[0154] A determination module 20, configured to determine the failure state of the one-way clutch based on the functional state through at least two of the actual speed of the active end, the actual speed of the passive end, and the target speed of the active end;

[0155] The processing module 30 is used to select a preset failure processing mechanism according to the failure state, and process the failure state according to the preset failure processing mechanism.

[0156] The one-way clutch failure state determination and processing device provided by the present application adopts the one-way clutch failure state determination and processing method in the above-mentioned embodiment, which can solve the technical problem of the problem of being unable to accurately diagnose the one-way clutch failure state. Compared with the prior art, the beneficial effects of the one-way clutch failure state determination and processing device provided by the present application are the same as the beneficial effects of the one-way clutch failure state determination and processing method provided by the above-mentioned embodiment, and other technical features in the one-way clutch failure state determination and processing device are the same as the features disclosed in the above-mentioned embodiment method, which will not be repeated here.

[0157] In one embodiment, the determination module 20 is also used to obtain a first speed threshold and a first time threshold when the functional state is a disengaged state; obtain a first speed difference according to the target speed of the active end and the actual speed of the passive end; when the first speed difference is greater than the first speed threshold, compare the actual speed of the active end with the actual speed of the passive end; when the actual speed of the active end is less than or equal to the actual speed of the passive end and the duration is the first time threshold, determine that the failure state of the one-way clutch is a disengaged failure state.

[0158] In one embodiment, the determination module 20 is also used to obtain a second speed threshold when the functional state is the engaged state; obtain a second speed difference according to the actual speed of the active end and the actual speed of the passive end; when the second speed difference is greater than the second speed threshold, determine that the failure state of the one-way clutch is the engaged failure state.

[0159] In one embodiment, the processing module 30 is also used to select a first preset failure processing mechanism when the failure state is a combined failure state; obtain a first preset input torque and a first preset vehicle speed of the active end according to the first preset failure processing mechanism; control the input torque of the active end to be less than the first preset input torque, and control the vehicle speed to be less than the first preset vehicle speed, and open the one-way clutch at the same time; generate a preset combination failure reason, and issue a prompt to the user.

[0160] In one embodiment, the processing module 30 is further used to select a second preset failure processing mechanism when the failure state is a separation failure state; obtain a second preset input torque and a second preset vehicle speed of the active end according to the second preset failure processing mechanism; control the input torque of the active end to be less than the second preset input torque, and control the vehicle speed to be less than the second preset vehicle speed; determine the category of the drive, and when the category is an engine, shut down the engine; generate a preset separation failure reason, and issue a prompt to the user.

[0161] In one embodiment, the acquisition module 10 is also used to acquire the actual speed of the active end of the one-way clutch, the actual speed of the passive end of the one-way clutch, the third speed threshold and the functional status instruction of the domain controller; obtain the target speed of the active end according to the actual speed of the passive end and the third speed threshold; obtain the actual current of the drive motor, the target current of the drive motor, the first current threshold, the second current threshold, the second time threshold and the third time threshold according to the functional status instruction of the domain controller, and the first current threshold is greater than the second current threshold; obtain the current current deviation according to the actual current and the target current, and when the current current deviation is less than or equal to the first current threshold and lasts for the second time threshold, determine that the functional state of the one-way clutch is in the engaged state; when the actual current is less than the second current threshold and lasts for the third time threshold, determine that the functional state of the one-way clutch is in the disengaged state.

[0162] In one embodiment, the acquisition module 10 is also used to obtain the rotational speed of a preset drive, a first rotational speed ratio from the preset drive to the active end, the current vehicle speed, the radius of the wheel, and the second rotational speed ratio from the passive end to the wheel; based on the rotational speed of the preset drive and the first rotational speed ratio, the actual rotational speed of the active end of the one-way clutch is obtained; based on the current vehicle speed, the radius of the wheel and the second rotational speed ratio, the actual rotational speed of the passive end of the one-way clutch is obtained.

[0163] The present application provides a device for determining and processing the failure state of a one-way clutch, and the device for determining and processing the failure state of the one-way clutch includes: 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 so that the at least one processor can execute the method for determining and processing the failure state of the one-way clutch in the above-mentioned embodiment one.

[0164] Reference below Figure 8, which shows a schematic diagram of the structure of the one-way clutch failure state determination and processing device suitable for implementing the embodiment of the present application. The one-way clutch failure state determination and processing device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 8 The illustrated one-way clutch failure state determination and processing device is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0165] like Figure 8 As shown, the one-way clutch failure state determination and processing device may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the one-way clutch failure state determination and processing device are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the one-way clutch failure state determination and processing device to communicate wirelessly or wired with other devices to exchange data. Although the figure shows the one-way clutch failure state determination and processing device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have instead.

[0166] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0167] The one-way clutch failure state determination and processing device provided by the present application adopts the one-way clutch failure state determination and processing method in the above-mentioned embodiment, which can solve the technical problem of the problem of being unable to accurately diagnose the one-way clutch failure state. Compared with the prior art, the beneficial effects of the one-way clutch failure state determination and processing device provided by the present application are the same as the beneficial effects of the one-way clutch failure state determination and processing method provided by the above-mentioned embodiment, and other technical features in the one-way clutch failure state determination and processing device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0168] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0169] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0170] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, the computer-readable program instructions being used to execute the method for determining and processing the failure state of the one-way clutch in the above-mentioned embodiment.

[0171] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0172] The computer-readable storage medium may be included in the one-way clutch failure state determination and processing device; or may exist independently without being assembled into the one-way clutch failure state determination and processing device.

[0173] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the one-way clutch failure state determination and processing device, the one-way clutch failure state determination and processing device: obtains the active end actual speed and active end target speed of the one-way clutch, the passive end actual speed of the one-way clutch, and the functional state of the one-way clutch;

[0174] Determine the failure state of the one-way clutch based on the functional state through at least two of the actual speed of the active end, the actual speed of the passive end, and the target speed of the active end;

[0175] A preset failure processing mechanism is selected according to the failure state, and the failure state is processed according to the preset failure processing mechanism.

[0176] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0177] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0178] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0179] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned method for determining and processing the failure state of the one-way clutch, and can solve the technical problem of being unable to accurately diagnose the failure state of the one-way clutch. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the method for determining and processing the failure state of the one-way clutch provided by the above-mentioned embodiment, and will not be repeated here.

[0180] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for determining and processing the failure state of the one-way clutch.

[0181] The computer program product provided by the present application can solve the technical problem of being unable to accurately diagnose the failure state of the one-way clutch. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the method for determining and processing the failure state of the one-way clutch provided by the above embodiment, and will not be elaborated here.

[0182] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for determining and processing the failure state of a one-way clutch, characterized in that: The method comprises: Acquire the active end actual speed and active end target speed of the one-way clutch, the passive end actual speed of the one-way clutch, and the functional state of the one-way clutch; Determine the failure state of the one-way clutch based on the functional state through at least two of the actual speed of the active end, the actual speed of the passive end, and the target speed of the active end; A preset failure processing mechanism is selected according to the failure state, and the failure state is processed according to the preset failure processing mechanism.

2. The method according to claim 1, characterized in that The step of determining the failure state of the one-way clutch based on the functional state through at least two of the active end actual speed, the passive end actual speed, and the active end target speed comprises: When the functional state is a separation state, obtaining a first rotation speed threshold and a first time threshold; Obtaining a first speed difference according to the active end target speed and the passive end actual speed; When the first speed difference is greater than the first speed threshold, comparing the actual speed of the active end with the actual speed of the passive end; When the actual speed of the active end is less than or equal to the actual speed of the passive end and the duration is the first time threshold, it is determined that the failure state of the one-way clutch is a separation failure state.

3. The method according to claim 1, characterized in that The step of determining the failure state of the one-way clutch based on the functional state through at least two of the active end actual speed, the passive end actual speed, and the active end target speed, further includes: When the functional state is a combined state, obtaining a second rotation speed threshold; Obtaining a second speed difference according to the actual speed of the active end and the actual speed of the passive end; When the second speed difference is greater than the second speed threshold, it is determined that the failure state of the one-way clutch is a coupled failure state.

4. The method according to claim 1, characterized in that The step of selecting a preset failure processing mechanism according to the failure state and processing the failure state according to the preset failure processing mechanism includes: When the failure state is a combined failure state, selecting a first preset failure processing mechanism; According to the first preset failure processing mechanism, obtaining a first preset input torque and a first preset vehicle speed of the active end; Controlling the input torque of the active end to be less than the first preset input torque, controlling the vehicle speed to be less than the first preset vehicle speed, and opening the one-way clutch at the same time; Generate presets combined with failure causes and issue prompts to users.

5. The method according to claim 1, characterized in that The step of selecting a preset failure processing mechanism according to the failure state and processing the failure state according to the preset failure processing mechanism includes: When the failure state is a separation failure state, selecting a second preset failure processing mechanism; According to the second preset failure processing mechanism, obtaining a second preset input torque and a second preset vehicle speed of the active end; Controlling the input torque of the active end to be less than the second preset input torque, and controlling the vehicle speed to be less than the second preset vehicle speed; determining a category of the driver, and shutting down the engine when the category is an engine; Generates preset separation failure reasons and issues prompts to the user.

6. The method according to claim 1, characterized in that The step of obtaining the active end actual speed and active end target speed of the one-way clutch, the passive end actual speed of the one-way clutch, and the functional state of the one-way clutch comprises: Acquire an actual speed of the active end of the one-way clutch, an actual speed of the passive end of the one-way clutch, a third speed threshold, and a functional status instruction of a domain controller; Obtaining a target speed of the active end according to the actual speed of the passive end and the third speed threshold; According to the functional status instruction of the domain controller, an actual current of the driving motor, a target current of the driving motor, a first current threshold, a second current threshold, a second time threshold and a third time threshold are acquired, wherein the first current threshold is greater than the second current threshold; Obtaining a current current deviation according to the actual current and the target current, and determining that the functional state of the one-way clutch is a coupled state when the current current deviation is less than or equal to the first current threshold and lasts for the second time threshold; When the actual current is less than the second current threshold and lasts for the third time threshold, it is determined that the functional state of the one-way clutch is a disengaged state.

7. The method according to claim 6, characterized in that The step of obtaining the actual speed of the active end of the one-way clutch and the actual speed of the passive end of the one-way clutch comprises: Obtaining a rotation speed of a preset driver, a first rotation speed ratio from the preset driver to the active end, a current vehicle speed, a radius of a wheel, and a second rotation speed ratio from the passive end to the wheel; Obtaining an actual rotational speed of the active end of the one-way clutch according to the rotational speed of the preset driver and the first rotational speed ratio; The actual rotational speed of the passive end of the one-way clutch is obtained according to the current vehicle speed, the radius of the wheel and the second rotational speed ratio.

8. A device for determining and processing the failure state of a one-way clutch, characterized in that: The device comprises: An acquisition module, used to acquire an actual speed of the active end of the one-way clutch and a target speed of the active end, an actual speed of the passive end of the one-way clutch, and a functional state of the one-way clutch; A determination module, configured to determine the failure state of the one-way clutch based on the functional state through at least two of the active end actual speed, the passive end actual speed, and the active end target speed; A processing module is used to select a preset failure processing mechanism according to the failure state, and process the failure state according to the preset failure processing mechanism.

9. A device for determining and processing the failure state of a one-way clutch, characterized in that: The device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the method for determining and processing the failure state of the one-way clutch as claimed in any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the method for determining and processing the failure state of the one-way clutch as described in any one of claims 1 to 7 are implemented.

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