摘要
研究了基于比例控制分量非线性方法合成的新型非线性PID控制器(简记为:NPID- PCA)．该控制器将比例控制分量表示为误差信号的非线性函数,并通过三个独立非线性函数构造合成PID控制器．由于比例控制分量具有最简的非线性特征,因此该类控制器在设计上更为简洁,非线性在控制作用方面的物理意义更为明确．采用样条函数生成非线性作用曲线, 用户可以通过图形化交互方式直观地实现非线性设计．通过与文献中的控制实例比较,本文提出的新型非线性PID控制器可以实现更为优良的控制性能指标,包括对带有时延或死区的被控对象．有关NPID-PCA工具箱已经按照“开放源码”方式在网上发布．
In this paper, a nonlinear PID controller is studied based on ＂proportional component approach＂ （called ＂NPID-PCA＂）. While compatible with the conventional PID technique, this type of controllers imposes three independent nonlinear functions between the proportional forces on the error signals to synthesize nonlinear PID controllers. Due to its simplest characteristics in nonlinear proportional forces, the proposed controller provides a better means for designing and tuning of controller＇s nonlinearity. A spline-based function is adopted to realize the nonlinear functions with a graphical interface. Several examples are given in comparison with the other existing nonlinear PID controllers. Simulation results confirm the superior performances of the proposed controllers for plants with time delay or dead zone. The toolbox of NPID-PCA has appeared to the public as ＂open source＂ software.
出处
《自动化学报》
EI
CSCD
北大核心
2006年第2期219-227,共9页
Acta Automatica Sinica
基金
国家自然科学基金项目(60275025)创新集体(60121302)资助~~
关键词
PID控制器
非线性
比例分量方法
时延
死区
PID control, nonlinearity, proportional component approach, time delay, dead zone
