一类不规则损失输出数据系统的自校正PID控制算法  

Self-tuning PID Control Algorithm for a Class of Irregularly Missing Output Data Systems

作　　者：丁少华 刘艳君[1] 肖永松[1] DING Shao-hua;LIU Yan-jun;XIAO Yong-song(School of Internet of Things Engineering,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡214122

出　　处：《控制工程》2022年第1期70-75,共6页Control Engineering of China

基　　金：国家自然科学基金资助项目(61973137,61803183);江苏省自然科学基金资助项目(BK20180591)。

摘　　要：针对输出误差模型描述的不规则损失输出数据系统,提出一种自校正PID控制算法。首先结合辅助模型辨识思想和最小二乘原理设计参数估计器,在线估计系统参数,并设计一个损失输出估计器来估算采样间损失输出,使控制系统得到一个具有与期望输出相同采样周期的反馈信号;再根据系统参数的估计值实时调整自校正PID控制器参数,使系统实际输出跟踪期望输出,实现自校正PID控制。仿真结果验证了该算法的有效性。A self-tuning PID control algorithm is proposed for irregularly missing output data systems described by the output error model.The basic idea is to estimate the system parameters online by designing a parameter estimator based on the auxiliary model identification and the least square principle,and to estimate the missing output by design a missing output estimator,so that the control system gets a feedback signal with the same sampling period as its expected output.Then,the parameters of the PID controller are adjusted in real time according to the system parameter estimates,so that the actual output of the system can track the expected output and the self-tuning PID control can be realized.The effectiveness of the proposed algorithm is validated by simulation results.

关 键 词：不规则损失输出 输出误差系统 辅助模型 自校正PID控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]