Accelerator pedal sensor minimum voltage learning method and device as well as vehicle control unit

Abstract

The application proposes an accelerator pedal sensor minimum voltage learning method and device as well as a vehicle control unit, wherein the method comprises the following steps of acquiring a sensor voltage value corresponding to an accelerator pedal mechanical minimum value when a vehicle key is at an ACC position; and according to the sensor voltage value corresponding to the accelerator pedal mechanical minimum value, the accelerator pedal sensor minimum voltage stored in the vehicle control unit (VCU) EEPROM, and the status of an accelerator pedal sensor, judging in real time whether the sensor voltage value corresponding to the accelerator pedal mechanical minimum value needs to be adjusted, and performing learning adjustment according to a minimum value learning method, so that a sensor voltage corresponding to the accelerator pedal mechanical minimum value can be accurately learned in real time, and travelling safety and driving operation sense can be improved. The initial value of the VCU EEPROM, namely the upper limit of the sensor voltage corresponding to the accelerator pedal mechanical minimum value, is set, so that the accelerator pedal sensor minimum voltage learning method disclosed by the invention can be adapt to different types of accelerator pedals from different manufacturers.

Description

technical field [0001] The present application relates to the technical field of automotive electronics, in particular to a method and device for learning the minimum voltage of an accelerator pedal sensor and a vehicle controller. Background technique [0002] New energy vehicles have become the development trend of today's automobile industry. The accelerator pedal is the main part of the driver's control of the vehicle. In the control of new energy vehicles, the accelerator pedal is the most important input of the vehicle torque, and the accelerator pedal signal directly reflects the driver's acceleration demand for the vehicle, which has a major impact on the safe operation of the vehicle. [0003] At present, most of the two-channel sensor signals of the accelerator pedal of new energy vehicles are directly collected by the vehicle controller. However, with the passage of ambient temperature and time, the sensor voltage corresponding to the minimum mechanical value of...

AI Technical Summary

Problems solved by technology

However, with the passage of ambient temperature and time, the sensor voltage corresponding to the minimum mechanical value of the accelerator pedal will shift, resulting in a voltage difference between the sensor voltage corresponding to the minimum mechanical value of the accelerator pedal and the original sensor voltage, resulting in the output of the accelerator pedal. Or unexpected opening, affecting driving safety and driving sense

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