基于迭代反馈调整的滞后系统调节算法仿真研究  

Simulation of regulation algorithm of lagging system based on iterative feedback tuning

作　　者：鞠云鹏[1] 常德功[1] 

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《机电工程》2016年第2期242-246,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(50975147)

摘　　要：针对大滞后系统在响应过程中动态性能指标差的问题,对一阶惯性加滞后环节的控制方法进行了研究,对滞后系统的控制器参数的经典调节方法进行了对比和归纳,提出了一种基于PID控制器结构的迭代反馈调整算法(IFT),利用被控对象与控制器构成系统方框图的前向通道传递函数并组成了负反馈闭环系统,通过闭环系统输入输出数据以及线性二次高斯判据得出了PID控制器参数整定值。以Matlab/Simulink作为仿真软件,将该优化方法 IFT与Ziegler-Nichols(ZN)调节方法、内模控制方法(IMC)、误差平方积分法(ISE)3种经典调节方法在相同噪声情况下进行了对比分析,并分别给出仿真效果图。研究结果表明:该方法可以缩短调节时间,减小超调量,增强系统的鲁棒性。因此,该设计方法对于改善滞后系统的响应效果具有重要意义。Aiming at the problem of poor dynamic performance indicators of time-delay system in response process,control method of the first order inertia lag link was researched. Classical adjustment methods of controller parameters were compared and summarized. An iterative feedback adjustment algorithm based on the structure of the PID controller was put forward. The controlled object and the PID controller were used as the forward channel transfer function of system block diagram. PID controller parameter setting value was obtained by the input and output data of closed-loop system as well as the linear quadratic Gaussian criterion. This optimization method was compared with ZieglerNichols（ ZN） regulation,internal model control（ IMC） method and error square integral method（ ISE） under the condition of the same noise. The results indicate that the IFT method can shorten adjustment time,reduce overshoot and improve robustness. Therefore,the design method is meaningful for improving response effect of time-delay system.

关 键 词：滞后系统 迭代反馈调整 PID MATLAB/SIMULINK 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TH39[自动化与计算机技术—控制科学与工程]