Error self-learning method and device for brake pedal travel sensor

Abstract

The invention discloses an error self-learning method of a brake pedal travel sensor, belonging to the automobile electronic control field. Determining a current error self-learning value, the error self-learning value being used to correct the voltage value determined by the brake pedal stroke sensor; The error self-learning value is subtracted from the current voltage proportion value to obtaina correction value; If the correction value exceeds the set range, the error self-learning value is corrected by the set value until the correction value corresponding to the corrected error self-learning value does not exceed the set range; The error self-learning value is updated to the corrected error self-learning value. The error self-learning method can self-learn that the brake pedal travelsensor will have the error of precision in the manufacturing, installation and debugging process, so as to efficiently and accurately control the recovery of the brake energy of the automobile.

Description

technical field [0001] The invention relates to the field of automotive electronic control, in particular to an error self-learning method and device for a brake pedal stroke sensor. Background technique [0002] As a fast-paced and efficient means of transportation in life, the number of new energy vehicles has been increasing year by year in recent years. New energy vehicles include pure electric vehicles and hybrid vehicles and other vehicles with various power forms. Each vehicle with different power forms has a braking energy recovery function. The braking energy recovery function means that when the vehicle is coasting or braking, it will The power on the wheels is transmitted to the motor in the car to drive the motor to generate electricity. [0003] At present, in order to accurately control the braking energy recovery function, the brake pedal stroke sensor is usually used to obtain the braking stroke of the pedal, and different energy recovery strategies are set ...

AI Technical Summary

Problems solved by technology

[0005] The accuracy of the brake pedal travel sensor will be deviated during the manufacture, installation and commissioning of the brake pedal travel sensor, which will affect the setting of the energy recovery strategy of the brake energy recovery function, and cannot efficiently and accurately control the brake pedal. The recovery of kinetic energy, which leads to the problem of increased energy consumption of vehicles

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