基于扭矩请求的预见性线控油门控制研究  

Research on Control of Predictive Throttle-by-wire Based on Torque Request

作　　者：胡春雨 于梦阁[1] 郑旭光 王国晖 HU Chun-yu;YU Meng-ge;ZHENG Xu-guang;WANG Guo-hui(College of Mechanical and Electrical Engineering,Qingdao University,Qingdao 266071,China;China Satellite Navigation and Communications Co.Ltd.,Beijing 100094,China;Qingdao Automotive Research Institute,Jilin University,Qingdao 266000,China)

机构地区：[1]青岛大学机电工程学院,青岛266071 [2]中寰卫星导航通信有限公司,北京100094 [3]吉林大学青岛汽车研究院,青岛266000

出　　处：《青岛大学学报（自然科学版）》2023年第2期64-70,共7页Journal of Qingdao University(Natural Science Edition)

基　　金：国家自然科学基金(批准号:51705267)资助。

摘　　要：针对不同车型的ECU(Engine Control Unit)报文协议不同,预见性巡航控制系统(Predictive Cruise Control System,PCC)扭矩请求无法得到应答,不可实现车辆巡航控制的问题,提出了一种PCC请求扭矩—油门电压—实际扭矩的间接反馈控制方法。在PCC模块与发动机ECU之间设计信号处理单元—线控油门控制单元THCU(Throttle Control Unit by Wire),基于车联网高密数据和油门踏板电压与油门开度的线性关系,建立油门电压—实车扭矩先验模型,将模糊自整定(Fuzzy Self-Tuning,FS-T)PID算法融合进PCC扭矩预测程序中,建立扭矩跟踪控制器。实验结果表明,通过THCU模块的信号转换,利用油门电压—实车扭矩先验模型对控制量初步调节,PCC融合算法对扭矩精确跟踪,实现了在平均73.7 km/h的车辆巡航工况下,扭矩跟踪时间误差为0.495 s,行程误差为10.13 m的安全行车要求。Due to the different ECU communication protocols of different vehicles,Predictive Cruise Control System(PCC)cannot receive the response of the torque request of some engine ECUs,so it is impossible for PCC to cruise the vehicle.In order to solve the problem,an indirect feedback control method for PCC request torque to throttle voltage to actual driving torque was proposed.A signal processing unit was designed,called THCU(Throttle Control Unit by Wire),between PCC module and engine ECU,and an empirical model of throttle voltage-actual vehicle torque was established,based on the high-density data of the vehicle network and the linear relationship between the throttle voltage and the throttle opening.And then,a torque tracking controller was established,via combining with Fuzzy Self-Tuning PID algorithm and the torque predictive program of PCC.The research result of real vehicle test shows that the safe driving requirements under high speed conditions are realized,through signal conversion of THCU,preliminary adjustment of controlled quantity by the above empirical model and accurate torque tracking by fuzzy self-tuning PID algorithm.The detailed result is that the time error of real torque tracking target torque is 0.495,and the traveling distance error is 10.13 meters under the cruise condition of 73.7 km/h.

关 键 词：预见性巡航控制系统 扭矩请求 线控油门 先验模型 模糊自整定PID 

分 类 号：U469.7[机械工程—车辆工程]