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Testing and Evaluation of Pure Electric Vehicle Pedal Control Characteristics based on single Pedal Control Strategy
F2018/F2018-EHV-059

Authors

Peng WANG
China Automotive Engineering Research Institute Co., Ltd., China

Qin BAI, Guoqiang TANG, Yang OU, Lei XU, Zhou ZHOU

Abstract

Single pedal control strategy integrates energy regeneration in accelerator pedal operation. This paper monitors the "mechanical-electrical-hydraulic" state of the electric driving system, designs a test matrix based on the varying conditions such as vehicle speed, pedal operation, and driving mode, and studies the pedal control characteristics of a pure electric vehicle. The analysis shows that the single pedal control characteristics integrates the driving and braking operation of the vehicle well, while changing the traditional driving habits simultaneously. By operating the accelerator pedal skilfully, it is possible for the driver to meet the power requirements under driving condition, and obtain -0.05g to -0.2g deceleration by releasing accelerator pedal. Therefore, a linear pedal feeling is obtained, while fully fulfilling the typical urban cycle and the driving and braking intention of the main driving cycle. The driving operation is simplified by reducing the using frequency of the brake pedal realized by the single pedal control characteristics which cover coasting and low intensity braking operation of conventional regenerative braking systems.

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