基于壁面加热功率回归模型的车用电子水泵控制策略研究  

Research on Control Strategy of Vehicle Electronic Water Pump Based on Regression Model of Engine Wall Heating Power

作　　者：李嘉轶 邢叶荣 徐元利[1,3] 孟祥飞 Li Jiayi;Xing Yerong;Xu Yuanli;Meng Xiangfei(Tianjin University of Science and Technology,Tianjin 300222;Shanxi Datong University,Datong 037009;Tianjin Key Laboratory of Integrated Design and on-Line Monitoring of Light Industry and Food Engineering Machinery and Equipment,Tianjin 300222)

机构地区：[1]天津科技大学,天津300222 [2]山西大同大学,大同037009 [3]天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津300222

出　　处：《汽车技术》2022年第2期48-54,共7页Automobile Technology

基　　金：天津大学内燃机燃烧学国家重点实验室开放基金项目(k2016-6);天津市科技特派员项目(16JCTPJC48700)。

摘　　要：为了提高车用电子水泵对发动机温度控制效果的稳定性,提出了一种基于温差的PID控制与壁面加热功率回归模型补偿的控制策略。通过对影响发动机当前工况产热量的相关参数进行分析,建立非线性回归模型作为水泵转速的实时补偿值,以改善温度响应延迟的缺点,在AMESim中建立整车和冷却系统模型并进行了仿真验证,结果表明:相比于单一的温差PID控制和模糊PID控制,提出的策略能有效提高水温的控制精度,同时,整车燃油经济性提高了约0.4%,预计在实车测试中的长时间大范围工况运行中将获得更明显的节油效果。In order to improve the stability of the engine temperature control effect of the vehicle electronic water pump,a control strategy based on temperature difference PID control and wall heating power regression model compensation for electronic water pump are proposed.By analyzing the related parameters that affect the heat production of the engine under current working conditions,a nonlinear regression model is established as the real-time compensation value of the pump speed,to improve the disadvantage of temperature response delay.Vehicle and cooling system models are established in AMESim and verified by simulation.The results show that compared with single temperature difference PID control and fuzzy PID control,the proposed strategy can effectively improve the control accuracy of water temperature.Moreover,vehicle fuel economy is improved by about 0.4%,and it is expected that more remarkable fuel saving effect will be obtained in the long-term and large-scale operation in the real vehicle test.

关 键 词：电子水泵控制策略 混合动力汽车 AMESIM 不确定延迟 非线性回归分析 

分 类 号：U463[机械工程—车辆工程]