针对具有可重复性的一般离散时间非线性系统,在已存在的PID控制系统的基础上,利用重复性的特点,给出了一种学习增强型PID控制方法,严格证明了收敛性,并通过快速路交通系统的仿真验证了该方法的有效性和优越性。该种方法的主要特点是,不需要对已有的PID控制装置和系统做任何改动,只需在PID控制器的外环加上迭代学习控制器即可,是一种模块化的设计。该方法实现了PID与迭代学习控制的优势互补。
Using the repeatability of controlled systems,a learning-enhanced PID control method is presented for a general discrete-time nonlinear system and a rigorous convergence is proved.The effectiveness and advantage of the proposed learning-enhanced PID method is demonstrated through simulations of freeway traffic system.Since this method is of modularize design,in its implementation we need only add a complementary iterative-learning-controller(ILC) to the existing PID feedback control loop,without the need of any system reconfiguration or system redesign.