汽车电子节气门系统自适应固定时间预设性能控制

Adaptive fixed-time prescribed performance control of automotive electronic throttle system

中文关键词  电子节气门  位置跟踪  预设性能  固定时间收敛  自适应技术

英文关键词  electronic throttle  position tracking  prescribed performance  fixed-time convergence  adaptive technique

中文摘要

      针对汽车电子节气门系统对暂稳态性能的较高要求以及系统固有的非线性和参数不确定性特性, 将预设性能控制策略与固定时间稳定性理论相结合, 应用自适应技术对系统参数的在线调节能力, 提出了一种自适应固定时间预设性能控制策略. 通过固定时间收敛理论与改进的预设性能函数设定及控制参数的实时调节, 保障了闭环控制系统对节气门开度任意参考信号的高性能位置跟踪及对运行过程中参数变化和负载扰动的鲁棒性. 控制器的有效性和优势通过MATLAB/Simulink仿真和基于dSPACE的硬件在环实验平台的实验得到验证.

英文摘要

      In the light of the high requirements of transient and static performance of automotive electronic throttle systems and the characteristics of nonlinearity and parameter uncertainty, an adaptive fixed-time prescribed performance control strategy is proposed by integrating the prescribed performance control with the fixed-time stability theory and utilizing adaptive online adjustment technique. By defining the improved prescribed performance, the fixed-time convergence, and the real-time adjustment of control parameters, the closed-loop control system possesses the high-performance position tracking to an arbitrary reference signal and the robustness to parameter perturbations and load disturbance. The effectiveness and superiority of the designed controller are verified by both the MATLAB/Simulink simulation and the dSPACE-based hardware-in-the-loop test experiment.