A control method and system for solving the sticking of a concealed door handle

Abstract

The present application relates to the technical field of vehicle door handle control, in particular to a control method and system for solving the sticking of a hidden door handle. The present application is based on the overall control logic of the vehicle control layer, and performs corresponding control on the hidden door handle actuator in different positions of the vehicle. The present application can effectively solve the problem of door handle asynchronization and inaction caused by motor sticking, and improve the driving experience. The present application comprehensively judges the owner's operation instruction, vehicle speed signal, gear signal and door handle state signal, and then generates a vehicle door handle folding and retracting command. The present application can improve the accuracy of door handle control, prevent door handle damage, and save equipment maintenance cost and time. The control system of the present application does not need to add additional vehicle hardware, and the overall hardware cost is low, which is easy to popularize and implement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle door handle control, in particular to a control method and system for solving the sticking of a hidden door handle. BACKGROUND

[0002] The existing vehicle hidden door handle controller usually uses an open-to-position switch signal, a return-to-position switch signal and corresponding control instructions to control the door handle motor action, realizing the folding and unfolding of the door handle. However, when the ambient temperature is low, the motor cannot act at low temperature, which makes the door handle in the open state unable to close, easily causing bumps; at the same time, when the door handle structure is stuck by iron filings or other small things, the door handle motor will also suddenly stop moving, which is manifested as the door handle stopping moving after moving to the middle state and being unable to recover, unless the open and return commands are re-performed; and when a single door handle is stuck, the four door handles will be out of sync, seriously affecting the driving experience.

[0003] Chinese patent CN116331147A discloses a control method for a hidden door handle. The user inputs palmprint information in advance, and whether the door handle needs to be popped open or returned is identified by a palmprint recognition method. A camera or a scanner is installed on the inner side and the outer side of the door handle to detect whether a hand is detected. When the door handle is unfolded and objects are simultaneously sensed on the inner side and the outer side of the door handle, the anti-pinch function is triggered, and the hidden door handle is not returned. When the door handle is in an unfolded state and no object is sensed on the inner side, the return function is executed according to the palmprint recognition on the outer side of the door handle. When the hidden door handle is returned, the door handle unfolding function is executed according to the palmprint recognition on the outer side of the door handle. The disadvantage of this scheme is that the accuracy of the collection device is required to be high. When the collection device is mis-collected or the collected palmprint is unclear, the door handle may be abnormally folded or unfolded, and the hardware cost of this scheme is high. SUMMARY

[0004] The present application solves the technical problem of the prior art by providing a control method and system for solving the sticking of a hidden door handle, which can effectively solve the problem of out-of-sync and inaction of the door handle caused by motor sticking, improve the driving experience, and reduce the hardware cost, thereby saving equipment maintenance cost and time.

[0005] To solve the above technical problems, the technical solution adopted by the present application is as follows:

[0006] I. A control method for solving the sticking of a hidden door handle

[0007] The present application provides a control method for solving the sticking of a hidden door handle, which includes the following strategies:

[0008] S1, collecting the information of the owner's key operation, the vehicle speed, the gear position, the door status and the door handle status in real time, and determining whether the command of folding back the door handle of the whole vehicle is triggered;

[0009] S2, identifying the initial position state of the motor of each door handle actuator through the whole vehicle controller;

[0010] S3, controlling the motor of each door handle actuator of the vehicle individually according to the command of folding back the door handle of the whole vehicle and the initial position state of the motor of each door handle actuator with preset control parameters;

[0011] S4, dynamically modifying the preset control parameters according to the real-time position state feedback information of the motor of each door handle actuator.

[0012] Preferably, when any of the following conditions is met, the command of folding back the door handle of the whole vehicle is triggered:

[0013] 1) receiving the command of locking the whole vehicle sent by the owner's key;

[0014] 2) the real-time vehicle speed of the current vehicle is greater than the vehicle speed threshold V1 for the automatic folding back of the door handle;

[0015] 3) the current vehicle gear is D / R and the real-time vehicle speed is greater than the vehicle speed threshold V2 for the gear folding back of the door handle;

[0016] 4) the four doors of the current vehicle are all in the closed state and at least one door handle is in the unfolded state, then the timing t0 is started, and t0 is not less than the timing folding back time T0.

[0017] Preferably, the initial position state of the motor of each door handle actuator includes the extended to-position, the folded to-position, the stuck position one and the stuck position two.

[0018] Preferably, when the initial position of the motor of the door handle actuator is the extended to-position, if the command of folding back the door handle is received, the motor is driven to act with the preset duty ratio PWM1; within the driving time t1

[0019] Preferably, when the initial position of the motor of the door handle actuator is the folded to-position, if the command of folding back the door handle is received, it is considered that the folding back is completed and no motor driving action is performed.

[0020] Preferably, when the initial position of the door handle actuator motor is the jam position one or the jam position two, if a door handle folding back command is received, the motor is powered off for 1s and then driven again with full duty cycle PWM3, and the timing t3 is started; if the motor position folding back to position signal is received within t3

[0021] Two, a vehicle hidden door handle control system

[0022] Based on the same inventive concept, the application also provides a vehicle hidden door handle control system using the above-mentioned control method, mainly comprising:

[0023] The vehicle controller is electrically connected with the main driver door handle driving actuator, the co-driver door handle driving actuator, the left rear door handle driving actuator and the right rear door handle driving actuator, respectively, for receiving data sent by the signal module and processing and judging to generate corresponding vehicle door handle control instructions, and then controlling the unfolding and folding actions of the four hidden door handles of the vehicle.

[0024] The signal module specifically comprises a vehicle locking request module, a vehicle speed threshold judgment module, a gear following module and an automatic folding function module.

[0025] 1) The vehicle locking request module is in remote communication with the vehicle owner's key, for receiving the vehicle locking operation command sent by the vehicle owner.

[0026] 2) The vehicle speed threshold judgment module is electrically connected with the vehicle speed controller, for obtaining the current real-time vehicle speed and comparing it with the preset vehicle speed threshold.

[0027] 3) The gear following module is electrically connected with the gear controller of the vehicle, for obtaining the current real-time gear information.

[0028] 4) The automatic folding function module is used for generating a door handle automatic folding command according to the opening and closing state of the vehicle door handle, and controlling the vehicle hidden door handle to automatically fold.

[0029] Compared with the prior art, the application has the following main advantages:

[0030] 1. The application provides a control method for solving the sticking of a hidden door handle, based on the overall control logic of the vehicle control layer, the corresponding control of the hidden door handle actuator at different positions of the vehicle can effectively solve the problem of door handle asynchronization and inaction caused by motor sticking, and improve the driving experience;

[0031] 2. The application comprehensively judges according to the operation instruction of the vehicle owner, the vehicle speed signal, the gear signal and the door handle state signal, and then generates a vehicle door handle folding and retracting command, which can improve the accuracy of door handle control, prevent door handle damage, save equipment maintenance cost and time;

[0032] 3. The application provides a vehicle hidden door handle control system, based on the vehicle controller and the corresponding signal module, without additional vehicle hardware, the overall hardware cost is low, and it is easy to popularize and implement. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The overall logic diagram of the control method in the embodiment of the application;

[0034] Figure 2 The flowchart of the control strategy in the embodiment of the application;

[0035] Figure 3 The system block diagram of the control system in the embodiment of the application. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the application clearer, the application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and are not used to limit the application. In addition, the technical features involved in each embodiment of the application described below can be combined with each other as long as they do not conflict with each other.

[0037] It should be pointed out that according to the needs of implementation, each step / component described in the present application can be split into more steps / components, or two or more steps / components or part of the operation of the steps / components can be combined into a new step / component to achieve the purpose of the application.

[0038] Embodiment one, the embodiment provides a control method for solving the sticking of a hidden door handle, as shown in Figure 1 The main steps include:

[0039] S1, when any of the following conditions is met, the vehicle door handle folding and retracting command is triggered:

[0040] 1) receiving the vehicle locking operation command of the vehicle owner;

[0041] 2) Vehicle speed > V1 (door handle automatic retraction speed threshold);

[0042] 3) Vehicle gear changes to D / R and vehicle speed > V2 (door handle gear retraction speed threshold);

[0043] 4) The four doors of the vehicle are all closed, any of the four door handles is in the unfolded state, then start timing t0, when t0≥T0 (timing retraction time T0).

[0044] Further, the position state of the door handle actuator motor includes:

[0045] Extended to the position: POS1-1; POS2-1;

[0046] Folded to the position: POS1-0; POS2-0;

[0047] Stuck position 1: POS1-0; POS2-1;

[0048] Stuck position 2: POS1-1; POS2-0;

[0049] S2, when the motor position is in the extended to position (POS1-1; POS2-1), if the door handle folding retraction command is received, the motor is driven with a preset duty ratio PWM1 (60%); within the driving time t1 <T1 (the maximum time threshold for driving the motor with the duty ratio PWM1), the folded to position (folded to position POS1-0; POS2-0) signal is received, the motor is driven with a duty ratio PWM2 (PWM2 <PWM1, in this example PWM2 is 30%), and the driving time t2 reaches T2 (motor driving end time threshold) after which the driving is stopped.

[0050] S3, when the motor position is in the folded to position (POS1-0; POS2-0), if the door handle folding retraction command is received, it is considered that the folding retraction is completed, and the motor driving action is not performed.

[0051] S4, when the motor position is in the stuck position 1 / stuck position 2 (POS1-1; POS2-0 / POS1-0; POS2-1), if the door handle folding retraction command is received, the motor is powered off for 1s at this time, then the motor is driven to run with a duty ratio PWM3 (100%), and timing t3 is started; when t3 <T3 time, the folded to position (POS1-0; POS2-0) signal is received, the motor is immediately stopped; when t3≥T3, the folding is still unsuccessful, then the count N0 is started, and the motor is driven to run with a duty ratio PWM3 after being powered off for 1s, the above power-off and counting operations are repeated, when N0≥3, the motor driving is stopped, and a fault code is reported at the same time for replacement processing.

[0052] Embodiment two provides a control method for solving the sticking of a hidden door handle, which mainly comprises the following control strategies: Figure 2

[0053] S1, collecting the operation information of the owner's key, the speed information, the gear information, the door state information and the handle state information in real time, and determining whether the whole vehicle handle folding and retracting command is triggered;

[0054] S2, identifying the initial position state of each door handle actuator motor through the whole vehicle controller;

[0055] S3, controlling each door handle actuator motor of the vehicle separately according to the whole vehicle handle folding and retracting command combined with the initial position state of each door handle actuator motor, with preset control parameters;

[0056] S4, dynamically modifying the preset control parameters according to the real-time position state feedback information of each door handle actuator motor.

[0057] Further, when any of the following conditions is met, the whole vehicle handle folding and retracting command is triggered:

[0058] 1) receiving the whole vehicle locking operation command issued by the owner's key;

[0059] 2) the real-time speed of the current vehicle is greater than the handle automatic retracting speed threshold V1;

[0060] 3) the current vehicle gear is D / R and the real-time speed is greater than the handle gear retracting speed threshold V2;

[0061] 4) the current vehicle has four closed doors and at least one handle is in the unfolded state, then start timing t0, and when t0 is not less than the timing retracting time T0.

[0062] Further, the initial position state of each door handle actuator motor includes: the extended to position, the folded to position, the sticking position one, and the sticking position two.

[0063] Further, when the initial position of the door handle actuator motor is the extended to position, if the handle folding and retracting command is received, the motor is driven to act with a preset duty ratio one PWM1, and if the real-time position of the motor becomes the folded to position within a preset time one T1, the motor continues to be driven to act with a preset duty ratio two PWM2 for a preset time two T2, and then stops, wherein the preset duty ratio one PWM1 is greater than the preset duty ratio two PWM2.

[0064] Further, when the initial position of the door handle actuator motor is the folded to position, if the handle folding and retracting command is received, the motor does not act.​

[0065] Further, when the initial position of the door handle actuator motor is the stuck position one or the stuck position two, if a door handle folding back command is received, the motor is powered off and driven again with full duty cycle PWM3, and if the real-time position of the motor becomes the folding to position within preset time three T3, the motor is immediately stopped driving.

[0066] Further, if the real-time position of the motor still does not become the folding to position within preset time three T3, the motor is powered off again and driven again with full duty cycle PWM3 until the real-time position of the motor becomes the folding to position within preset time three T3 or the total number of times of powering off the motor is greater than the preset number N.

[0067] Embodiment three, based on the same inventive concept, the embodiment also provides a vehicle hidden door handle control system using the control method as described above, as shown in Figure 3 The vehicle control unit is electrically connected with the main driver door handle driving actuator, the co-driver door handle driving actuator, the left rear door handle driving actuator and the right rear door handle driving actuator, respectively, for receiving data sent by each signal module and processing and judging to generate corresponding vehicle door handle control instructions, and then controlling the unfolding and folding actions of the four hidden door handles of the vehicle.

[0068] The vehicle control unit is electrically connected with the main driver door handle driving actuator, the co-driver door handle driving actuator, the left rear door handle driving actuator and the right rear door handle driving actuator, respectively, for receiving data sent by each signal module and processing and judging to generate corresponding vehicle door handle control instructions, and then controlling the unfolding and folding actions of the four hidden door handles of the vehicle.

[0069] The signal module specifically includes: a vehicle locking request module, a vehicle speed threshold judgment module, a gear following module and an automatic folding function module.

[0070] 1) The vehicle locking request module is in remote communication with the vehicle owner's key, for receiving the vehicle locking operation command sent by the vehicle owner;

[0071] 2) The vehicle speed threshold judgment module is electrically connected with the vehicle speed controller, for obtaining the current real-time vehicle speed and comparing it with the preset vehicle speed threshold;

[0072] 3) The gear following module is electrically connected with the gear controller of the vehicle, for obtaining the current real-time gear information;

[0073] 4) The automatic folding function module is used to generate a door handle automatic folding command according to the opening and closing state of the vehicle door handle, and control the vehicle hidden door handle to automatically fold.

[0074] Embodiment four, based on the same inventive concept, the embodiment also provides a manual / automatic vehicle, which is provided with the hidden door handle control system as described above.

[0075] Further, the parts not described in detail in the present application are the same as or realized by using the prior art.

[0076] In summary:

[0077] 1、The application proposes a control method for solving the hidden door handle sticking, based on the overall control logic of the vehicle control layer, the corresponding control is performed on the hidden door handle actuator in different positions of the vehicle, which can effectively solve the problem of door handle out of synchronization and inaction caused by motor sticking, and improve the driving experience;

[0078] 2、The application comprehensively judges according to the owner's operation instruction, vehicle speed signal, gear signal and door handle state signal, and then generates a whole vehicle door handle folding and retracting command, which can improve the accuracy of door handle control, prevent door handle damage, save equipment maintenance cost and time;

[0079] 3、The application proposes a vehicle hidden door handle control system, based on the vehicle controller and the corresponding signal module, without additional vehicle hardware, the overall hardware cost is low, easy to implement.

[0080] Those skilled in the art will readily understand that the above description is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A control method for solving the sticking of a concealed door handle, characterized in that, The method comprises the following strategies: According to the real-time collected key operation information, vehicle speed information, gear information, door state information and door handle state information, it is determined whether to trigger the whole vehicle door handle folding back command; The initial position state of each door handle actuator motor is recognized by the whole vehicle controller; According to the whole vehicle door handle folding back command combined with the initial position state of each door handle actuator motor, the preset control parameters are used to control each door handle actuator motor of the vehicle; The real-time position state feedback information of each door handle actuator motor is used to dynamically correct the preset control parameters; The initial position state of each door handle actuator motor comprises: extended to position, folded to position, stuck position one and stuck position two; When the initial position of the door handle actuator motor is extended to position, if the door handle folding back command is received, the motor is driven to act with a preset duty ratio PWM1, and if the real-time position of the motor becomes folded to position within a preset time T1, the motor is continuously driven to act with a preset duty ratio PWM2 for a preset time T2 and then stopped, wherein the preset duty ratio PWM1 is greater than the preset duty ratio PWM2; When the initial position of the door handle actuator motor is folded to position, if the door handle folding back command is received, the motor does not act; When the initial position of the door handle actuator motor is stuck position one or stuck position two, if the door handle folding back command is received, the motor is powered off and then driven to act with full duty ratio PWM3, and if the real-time position of the motor becomes folded to position within a preset time T3, the motor is immediately stopped; If the real-time position of the motor still does not become folded to position within the preset time T3, the motor is powered off again and then driven to act with full duty ratio PWM3 until the real-time position of the motor becomes folded to position within the preset time T3 or the total number of times of powering off the motor is greater than a preset number N.

2. The control method of claim 1, wherein, When any of the following conditions is met, the whole vehicle door handle folding back command is triggered: The whole vehicle vehicle locking operation command issued by the owner's key is received; The real-time vehicle speed of the current vehicle is greater than the vehicle speed threshold of the door handle automatic folding back; The current vehicle gear is D / R and the real-time vehicle speed is greater than the vehicle speed threshold of the gear following folding back; The current vehicle four doors are all in the closed state and at least one door handle is in the unfolded state, then the timing t0 is started, and t0 is not less than the timing folding back time T0.

3. A concealed door handle control system for a vehicle employing the control method according to any one of claims 1 to 2, characterized by The whole vehicle controller is electrically connected with the main driver door handle driving actuator, the co-driver door handle driving actuator, the left rear door handle driving actuator and the right rear door handle driving actuator, respectively, for receiving the data sent by the signal module and processing and judging to generate the corresponding whole vehicle door handle control instruction, and then controlling the unfolding and folding actions of the four hidden door handles of the vehicle.

4. The concealed door handle control system of claim 3, wherein, The signal module specifically comprises: a vehicle locking request module, a vehicle speed threshold judgment module, a gear following module and an automatic folding function module; The vehicle locking request module communicates with the owner's key remotely, and is used to receive the whole vehicle vehicle locking operation command issued by the owner; The vehicle speed threshold judging module is electrically connected with the vehicle speed controller, and is configured to acquire a current real-time vehicle speed of the vehicle and compare the current real-time vehicle speed with a preset vehicle speed threshold; The gear following module is electrically connected with a gear controller of the vehicle, and is configured to acquire current real-time gear information. The automatic folding function module is configured to generate an automatic folding command of the door handle according to an opening and closing state of the door handle of the vehicle, and control the automatic folding of the concealed door handle of the vehicle.

5. A hybrid vehicle characterized by comprising: The vehicle concealed door handle control system comprises the vehicle concealed door handle control system according to claim 4.

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