PID算法及标准PID算法的改进.doc

PID算法及标准PID算法的改良


摘 要
PID控制器具有结构简单、容易实现、控制效果好、鲁棒性强等特点，是迄今为止最稳定的控制方法。它所涉及的参数物理意义明确，理论分析体系完整，并为工程界所熟悉，因而在工业过程控制中得到了广泛应用。从实际需要出发，一种好的PID控制器参数整定方法，不仅可以减少操作人员的负担，还可以使系统处于最正确运行状态。因此，对PID控制器参数整定法的研究具有重要的实际意义。本文介绍了PID控制技术的开展历史和研究进展。分析了传统的模拟和数字PID控制算法，并对传统的PID控制算法进行微分项和积分项的改良，学习了几种比拟普遍运用的方法，如不完全微分PID控制算法、微分先行、遇限消弱积分PID控制算法等。在学习的根底上，提出了一种自整定参数的专家模糊PID控制算法，由仿真结果可以看到，这种参数自整定方法与一般控制方法〔抗积分饱和控制法〕相比，在调节时间、抑制超调量、稳定性都要好，可以在工业上推广使用。
关键词：PID控制；结构简单；控制算法；参数整定
Abstract
So far, the PID is the most common control arithmetic. Its structure is simple and easy to implement, however, the control effect is perfect and it has a strong robust characteristics. The physical parameters is, meaning of ,theoretical analysis of system is integrity, and it is familiar by the engineering sector, which in the industrial process control has been widely used. For the actual needs, a good parameter PID controller tuning method can not only reduce the burden on operators, but also make the system running at best. Therefore, the fixed PID controller parameter tuning study has important practical significance. In this paper,we will introduce the development history and the research progress of PID control technology，analysis the traditional analog and digital PID control improve the differential and integral of traditional PID control algorithm. Learn several methods we used as not fully differential PID control algorithm, first differential, when limited to weaken the integral PID control algorithm. based on study,we will learn the expert fuzzy control algorithm that can self-tuning PID the simulation results we can see that compared the general (anti-saturation control), this method of parameter self-tuning in regulation time, overshoot suppression and stability well, It can promote be used in industry.
Key words: PID Contro