一类时变系统中补偿器的功能和设计  

Function and design of compensator for time-variant system

作　　者：开平安 曾世权 邓慧 KAI Ping-an;ZENG Shi-quan;DENG Hui(Energy Research Institute,State Development and Reform Committee of China,Beijing 100055,China;Energy and Electricity Research Center,Jinan University,Zhuhai Guangdong 519070,China)

机构地区：[1]国家发展和改革委员会能源研究所,北京100055 [2]暨南大学能源电力研究中心,广东珠海519070

出　　处：《控制理论与应用》2022年第6期1098-1102,共5页Control Theory & Applications

基　　金：白城发电公司1号机空冷岛冷端优化控制与运行技术研究项目(410011JX20200024)资助。

摘　　要：PID控制器由于其结构简单和参数整定容易,具有良好的控制功能,被广泛应用在工程上的线性确定性系统中.但是,在非线性系统和不确定性系统中,PID控制器由于其固定的控制参数和结构限制,很难克服系统中内外干扰的影响,控制器鲁棒性能较差.本文按照被控对象中的标称模型设计常规PID控制器优化参数,对非线性系统中多个线性化模型和不确定性系统中的不同工作点模型,设计了一类补偿器,使得整个闭环系统具有与标称模型下相同的控制品质.工程应用例子论证了本文提出的补偿器能提高不确定与非线性系统的控制品质和鲁棒性能.The PID controller is widely applied in the liner time-invariant plants for all types of industries,due to the simple structure and easy tuning.However,the poor robustness is found in the application of PID Controller within the timevariant and non-linear plants,because of the fixed structure and parameters.The study presents a compensator to enhance control quality and robust performance in time-variant or non-linear plants for the PID controller based on the transfer function of nominal operation case.Under several optimization criteria,the compensator is designed by the maximum of gap metric within uncertain or non-linear model,it is shown that the outputs of control system for the different operational situations are same as the nominal operation cases.Furthermore,the engineering examples confirm the fine control quality and robust performances of the control systems with the compensator in the time-variant systems.

关 键 词：PID控制器 系统鲁棒性能 补偿器 时变系统 间隙度 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]