A concealed door handle control method and automobile

Abstract

The application discloses a hidden door handle control method and a car, which comprises a folding driving step and an unfolding driving step; in the folding driving step, during the folding process, the duty cycle is controlled to perform the folding operation according to the hall value and whether the motor enters the locked rotor; in the unfolding driving step, when unfolding, the ice breaking mode and the obstacle mode are controlled to enter according to the hall value and whether the motor enters the locked rotor. The application provides a hidden door handle control method, which takes the hall signal and the position of the door handle as the control condition, and improves the control precision of the door handle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile air conditioning, in particular to a hidden door handle control method and automobile. BACKGROUND

[0002] The hidden outer door handle can improve the overall vehicle styling, reduce the vehicle driving wind resistance, and improve the technological sense and user experience of the vehicle body. The hidden outer door handle controller receives the instructions of the CEM, drives the unfolding and folding of the four door handles, and the existing hidden door handle has the problems of abnormal handle motor locked-rotor current and hall value in severe cold regions, which causes driving failure, and further affects the customer experience. SUMMARY

[0003] The present application aims to provide a hidden door handle control method to solve the problems in the background art.

[0004] To solve the above technical problems, the present application provides the following technical scheme: a hidden door handle control method, comprising a folding driving step and an unfolding driving step.

[0005] Folding driving step: during the folding process, the duty cycle is controlled to perform the folding operation according to the hall value and whether the motor enters locked-rotor.

[0006] Unfolding driving step: when unfolding, the ice-breaking mode and obstacle mode are controlled according to the hall value and whether the motor enters locked-rotor.

[0007] Preferably, when the total HALL value is greater than or equal to the hall value and the motor enters locked-rotor, the same duty cycle is maintained for a first time period, and if the hall value starts to decrease within the first time period, the folding is normal, and if the hall value remains unchanged beyond the first time period, the duty cycle is increased to 100% driving.

[0008] Preferably, when the folding position is 0 < hall value < 1 / 3 HALL total value, and the motor enters locked-rotor and the hall value does not change, the folding is driven with a duty cycle of 40%, and stopped after reaching the mechanical limit locked-rotor for a second time period.

[0009] Preferably, when the hall value is not equal to 0 and the hall value does not change, the motor does not reach the locked-rotor current, and the hall value remains unchanged after continuous driving for a third time period, then the duty cycle is increased to 100% driving, and after running to the folding inner limit, it runs to the mechanical limit with a duty cycle of 60%, and stops driving after locked-rotor for a third time period.

[0010] Preferably, when hall value ≠ 0, and the hall value does not change, the motor enters the locked-rotor current, and after the fourth time period of continuous driving, the hall value still does not change, then the duty cycle is increased to 100% for driving.

[0011] Preferably, during the unfolding process, when 0 < hall value < 1 / 3 HALL total value, and the motor enters the locked-rotor, the ice-breaking mode is executed.

[0012] Preferably, HALL total value ≥ hall value > 1 / 3 HALL total value, the hall value does not change, and the motor locked-rotor is detected between the folding soft stop inner limit and the unfolding soft stop limit, then the obstacle mode is executed.

[0013] Preferably, in the ice-breaking mode, the door handle is driven according to the 100% duty cycle, when HALL total value ≥ hall value > 1 / 3 HALL total value, it is still driven according to the 100% duty cycle, and if the hall value is detected without change in the fifth time period, and is between the unfolding outer limit and the folding soft stop inner limit, then the obstacle mode is executed.

[0014] Preferably, it further includes a position calibration step: during the running process of unfolding and folding of the door handle once, the hall value is recorded, and the error is compared with the internal calibration hall value of the register, if the error is within 1%, the operation is normally executed, if the error is greater than 1%, a self-learning position calibration is performed once.

[0015] An automobile applies the door handle control method.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] The present application provides a hidden door handle control method, which takes the hall signal and the position of the door handle as control conditions, and improves the control accuracy of the door handle. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The logic diagram for unfolding driving of the present application;

[0019] Figure 2 The logic diagram for folding driving of the present application;

[0020] Figure 3 The schematic diagram of the door handle in different positions Figure 1 ;

[0021] Figure 4 The schematic diagram of the door handle in different positions Figure 2 ;

[0022] Figure 5 The schematic diagram of the door handle position description. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] The embodiment provides a hidden door handle control method, which comprises a folding driving step and an unfolding driving step.

[0025] The folding driving step: in the folding process, the duty cycle is controlled to perform the folding operation according to the hall value and whether the motor enters the locked rotor; when the door handle motor hall value is 0 and the current does not enter the locked rotor, the controller continues for 1500 ms and then stops, and the software flag position is 0. The software flag position is set to 1 when the handle executes the driving instruction, and is set to 0 when the handle table stops driving; the maximum driving time is 5 s, and the controller drives for 5 s and then is forced to be 0.

[0026] When the HALL total value is greater than the hall value and is greater than 1 / 3 of the HALL total value, and the motor enters the locked rotor, the same duty cycle is maintained to continuously drive for a first time period; if the hall value starts to decrease within 500 ms, the folding is normal, if the hall value remains unchanged beyond the first time period, the duty cycle is increased to 100% driving. When the folding position is 0 < hall value < 1 / 3 HALL total value, and the motor enters the locked rotor and the hall value does not change, the folding is driven at a duty cycle of 40%, and stopped after reaching the mechanical limit and locked rotor for 100 ms. hall ≠ 0 and the hall value does not change, at this time the motor does not reach the locked rotor current, the hall value still does not change after continuously driving for a third time period, then the duty cycle is increased to 100% driving, and runs to the folding inner limit position, and then runs to the mechanical limit at a duty cycle of 60%, and stops driving after locked rotor for 100 ms. When the hall value ≠ 0 and the hall value does not change, at this time the motor enters the locked rotor current, the hall value still does not change after continuously driving for 500 ms, then the duty cycle is increased to 100% driving.

[0027] The unfolding driving step: when unfolding, according to the hall value and whether the motor enters the stall, the ice breaking mode and the obstacle mode are controlled. During the unfolding process, when 0 < hall value < 1 / 3 HALL total value, and the motor enters the stall, the ice breaking mode is executed. HALL total value ≥ hall value > 1 / 3 HALL total value, the hall value does not change, and the motor stall is detected between the folding soft stop inner limit and the unfolding soft stop limit, then the obstacle mode is executed. In the ice breaking mode, the door handle is driven according to 100% duty ratio, when HALL total value ≥ hall value > 1 / 3 HALL total value, it is still driven according to 100% duty ratio, if the hall value is detected without change in 500 ms during the continuous driving process, and is between the unfolding outer limit and the folding soft stop inner limit, then the obstacle mode is executed.

[0028] The position calibration step is also included: during the running process of the door handle unfolding and folding once, the hall value is recorded, and the internal calibration hall value of the register is compared. If the error is within 1%, the operation is normally executed, if the error is greater than 1%, a self-learning position calibration is performed once.

[0029] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A concealed door handle control method, characterized by: The method comprises a folding driving step and an unfolding driving step. The folding driving step: during folding, according to the hall value and whether the motor enters the stall, the duty cycle is controlled to perform the folding operation. When the HALL total value ≥ hall value > 1 / 3 HALL total value, and the motor enters the stall, the same duty cycle is maintained for a first time period, if the hall value starts to decrease within the first time period, the folding is normal, if the hall value remains unchanged beyond the first time period, the duty cycle is increased to 100% driving; When the folding position is at 0 < hall value < 1 / 3 HALL total value, and the motor enters the stall, and the hall value does not change, the folding driving is performed at a duty cycle of 40%, and stopped after reaching the mechanical limit stall for a second time period; When the hall value ≠ 0, and the hall value does not change, at this time the motor does not reach the stall current, the hall value still does not change after continuous driving for a third time period, then the duty cycle is increased to 100% driving, and running to the mechanical limit at a duty cycle of 60% after running to the folding inner limit, and stopped driving after stalling for a third time period; When the hall value ≠ 0, and the hall value does not change, at this time the motor enters the stall current, the hall value still does not change after continuous driving for a fourth time period, then the duty cycle is increased to 100% driving; The unfolding driving step: during unfolding, according to the hall value and whether the motor enters the stall, the ice breaking mode and the obstacle mode are controlled. During unfolding, when 0 < hall value < 1 / 3 HALL total value, and the motor enters the stall, the ice breaking mode is executed. When HALL total value ≥ hall value > 1 / 3 HALL total value, the hall value does not change, and the motor stall is detected between the folding soft stop inner limit and the unfolding soft stop limit, the obstacle mode is executed. In the ice breaking mode, the door handle is driven at a duty cycle of 100%, when HALL total value ≥ hall value > 1 / 3 HALL total value, it is still driven at a duty cycle of 100%, if the hall value does not change within a fifth time period during continuous driving, and is between the unfolding outer limit and the folding soft stop inner limit, the obstacle mode is executed.

2. The concealed door handle control method of claim 1, wherein: The position calibration step: during the unfolding and folding of the door handle, the hall value is recorded, and compared with the internal calibration hall value of the register, if the error is within 1%, the operation is normally executed, if the error is greater than 1%, a self-learning position calibration is performed.

3. An automobile characterized by comprising: The automobile applies a hidden door handle control method according to any one of claims 1-2.

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