一种基于遗传算法的非线性PID控制器

A nonlinear PID controller based on genetic tuning algorithm

基于PID控制器各增益参数与偏差信号之间呈现非线性关系,拟合各参数的非线性函数可分别对控制器的P/I/D各部分实施单独调节的思想,提出根据控制与误差之间的调节规律,给定一组增益参数的非线性函数,并采用遗传算法来优化和构造此非线性PID调节器.典型系统的仿真结果表明,该控制器可在一定程度上兼顾系统的动态和静态性能.

The relationship between the error signal and gain parameters of PID controller is nonlinear , fitting and constructing the nonlinear function of each parameter can be used respectively for the individual tuning each part of PID controller. In this article, it is described that based on the tuning law between the control and error, and (formulating) the nonlinear function of each gain parameter, the nonlinear PID controller could be optimized and (constructed) by adopting genetic algorithm. The simulate results of typical system shows that the dynamic and static (performances) of the system can be both attended to at a certain degree.