基于逆动力学的汽车最速操纵性能评价与优化

项目名称： 基于逆动力学的汽车最速操纵性能评价与优化

项目编号： No.51505244

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 机械、仪表工业

项目作者： 张丽霞

作者单位： 青岛理工大学

项目金额： 20万元

中文摘要： 目前国产汽车高速行驶性能的提高越来越受到重视。本项目避开驾驶员模型参数不确定性问题，以逆动力学思路研究汽车最速操纵问题中驾驶员方向盘操纵输入，建立最速操纵性能评价指标，优化汽车结构参数。通过把汽车最速操纵问题转化为最优控制，建立最速操纵逆动力学模型，运用直接配置-序列二次规划混合法得到驾驶员对方向盘操纵输入模型；考虑安全性、时间、驾驶员等因素，运用数学建模方法建立最速操纵性能仿真客观评价指标模型，基于实车试验，运用多级模糊综合评判方法对汽车最速操纵性能主观评价，运用回归方法研究其相关性，验证客观评价指标模型合理性，实现以客观评价代替主观评价；运用遗传算法优化反映汽车最速操纵性能的结构参数。成果能为汽车操纵动力学提供新研究思路与方法，为提高国产汽车高速行驶性和安全性提供理论基础，具有重要科学意义；能对赛车驾驶员训练提供理论指导,能应用于高速汽车性能设计，具有良好应用前景。

中文关键词： 最速操纵；逆动力学；性能评价；优化；汽车

英文摘要： People more and more pay attention to improve the national vehicle’s high speed performance in China. This project will avoid the problem of driver model parameter uncertainty, study driver's steering wheel handling input in vehicle minimum time handling problem by inverse dynamics thought, establish the performance evaluation index of vehicle minimum time handling, and optimize the vehicle structural parameters. This study will transform the problem of vehicle minimum time handling into the optimal control, establish the inverse dynamics model of vehicle minimum time handling, and get the handling input model of driver's steering wheel using the direct parallel - Sequential Quadratic Programming mixing. Considering the factors of safety, time, driver, this project will build the simulational objective evaluation index model of minimum time handling performance using mathematical modeling methods, based on real vehicle testing estimate the subjective evaluation model of vehicle minimum time handling performance by multi-level fuzzy comprehensive methods, and verify the rationality of objective and subjective evaluation model adopting regression method to replace the subjective evaluation by objective evaluation, and optimize the structural parameters reflecting the vehicle minimum time handling performance using genetic algorithm. Research results can provide new ideas and methods for vehicle handling dynamics, and provide theoretical basis for improving national vehicle high speed and safety, thus have important scientific significance. Moreover, the results can provide theoretical guidance for the training of race car drivers, and apply to performance design of high-speed vehicles, thus have a good prospect.

英文关键词： Minimum Time Handling;Inverse Dynamics;Performance Evaluation;Optimization;Vehicle