摘要
电子节气门的精确控制对提高汽车的动力性、经济性和排放性起着非常重要的作用。针对汽车电子节气门的精确跟踪控制问题,建立了电子节气门数学模型。基于电子节气门的非线性特点,设计了非线性观测器,非线性观测器实时估计系统中的摩擦及复位弹簧力矩,并给予补偿。仿真实验表明,该控制器能够很好地实现电子节气门快速跟踪控制。系统上升时间约为40ms,稳定时间约为80ms,且无超调。与未加观测器的滑模控制器相比,上升时间提高了60%,稳定时间提高了47%。同时,观测器能快速跟踪且较为准确地估计非线性的大小,能够实现较为精确的补偿。
The precise control of electronic throttle plays an important role in improving the power,economy and emission of automobiles.The mathematical model of electronic throttle is established for the accurate tracking control of automotive electronic throttle.Based on the nonlinear characteristics of the electronic throttle,a nonlinear observer is designed to estimate the friction and the reset spring torque in the system,and gives compensation in real-time.The simulation results show that the controller can realize the electronic throttle fast tracking control well.The rise time of the system is about 40 ms,the stable time is about 80 ms,and there is no overshoot.The rise time of the sliding mode controller with the observer is increased by 60%,and the stable time is increased by 47%.At the same time,the observer can quickly track and estimate the nonlinear accurately,and can give more accurate compensation.
作者
孙建民
韦智元
SUN Jianmin, WEI Zhiyuan(School of Mechanical-Electronic and Vehicle Engineering, Beijing University of CivilEngineering and Architecture, Beijing 100044, China)
出处
《中国科技论文》
CAS
北大核心
2018年第5期542-546,共5页
China Sciencepaper
关键词
载运工具运用工程
电子节气门
观测器
滑模控制器
非线性
vehicle application engineering
electronic throttle
observer
sliding mode controller
nonlinear
