关键词: 驾驶性分析系统；新能源汽车；信号处理；工况识别；评价指标；MATLAB App Designer

Abstract: In order to solve the problem of the lack of objective quantification in the evaluation of vehicle drivability within the industry, this paper designs an objective analysis system based on the subjective evaluation indicators of vehicle drivability. The codes for working condition recognition, signal processing and drivability index analysis are written through MATLAB App Designer to conduct the analysis of responsiveness, smoothness and differences in driving style for five typical working conditions of the vehicle, namely creep, starting acceleration, constant speed, sudden acceleration and deceleration, and coasting deceleration. The results show that the drivability analysis system has achieved good effects in the practical application of a certain plug-in hybrid electric vehicle (PHEV) model, significantly improving the efficiency of drivability development and contributing to promoting the standardization and automation process of objective analysis of vehicle drivability.

Key words: drivability analysis system; new energy vehicle; signal processing; work condition identification; evaluation index; MATLAB App Designer