一种PID多指标优化设计方法及实现

摘要

Many general methods for tuning parameter of PID controller are mostly applied on objects which are only satisfied with experiential formulas and the goal of tuning parameter is also to improve single performance. Taking into account the multi performance of system, a new PID multi-objective optimization design method was proposed, which takes time performances as the optimization objectives and pole placement as constraint condition. The simulative computation was finished with Matlab. Basis on this, the key steps of mixed programming of VB and Matlab through COM technology were expounded and the procedure for PID multi-objective optimization design based on this technology was implemented. Then some examples are simulated by procedure, and the simulation results indicate the effectiveness of the proposed method and the practicability of procedure.%关于控制器优化设计问题,常规的PID参数整定方法大多只适用于满足经验公式条件的对象,整定目标往往针对某一特定指标.为了兼顾系统的多个性能指标,提出了一种多指标约束下的PID参数优化整定方法:将动态性能指标作为优化目标,系统极点位置作为约束条件,采用Matlab仿真计算求解,并阐述了利用COM组件技术实现VB与Matlab混合编程的关键步骤,将其应用到PID多指标优化设计中完成了程序实现,并以实例进行了仿真计算,仿真结果证明了所提方法的有效性以及程序的实用性.