变参数PID控制器设计

Design of variable parameter PID controller

提出了一种变参数PID控制器,它是由一个传统的PID控制外环和一个参数调节内环组成的一种双环分级式结构,能依据系统工况变化实时调节PID参数,克服系统非线性影响,使系统在每一工况点均处于相对最优。仿真结果表明它与传统的PID系统相比具有更好的动态品质和系统的稳定性。

Variable parameter PID controller is a dual ring with layered structure,which consists of an outside ring of traditional PID control and an inside ring of parameter governing.It can adjust PID parameter to make it updated according to working systems and overcome the effects resulting from the no linearity of systems.It can make the conditions relatively best.It is indicated by simulation results that variable parameter PID has better dynamic behaviors and stability of system than traditional PID.