基于含噪声虚拟参考反馈的稳压器压力控制  

Regulator Pressure Control Based Onnoise-containing Virtual Reference Feedback

作　　者：钱虹 陈传奇 张凯文 QIAN Hong;CHEN Chuanqi;ZHANG Kaiwen(Key Laboratory of Shanghai Power Station Automation Technology,Shanghai 200090,China;Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海市电站自动化技术重点实验室,上海200090 [2]上海电力大学,上海200090

出　　处：《上海电力大学学报》2021年第2期105-108,114,共5页Journal of Shanghai University of Electric Power

基　　金：国家自然科学基金(51906133);上海市科学技术委员会地方能力建设项目(18020500900)。

摘　　要：基于稳压器压力系统具有时变性、非线性及稳压器实际运行过程中数据往往含有噪声干扰的特点,提出了一种针对稳压器控制闭环含噪声的虚拟参考反馈整定(NVRFT)方法。首先,在不需要求出被控对象数学模型的情况下,根据控制性能的要求,运用递推最小二乘法在线辨识控制器参数;然后,利用辅助变量法,进一步改善其性能指标以消除噪声干扰的影响;最后,对某核电厂稳压器压力控制系统进行仿真。仿真结果表明:基于NVRFT方法的压力控制系统比传统PID控制器具有更好的控制效果和抗干扰能力。In view of the time-varying,nonlinear characteristics of the pressure system of the regulator and the fact that the data in the actual operation of the regulator often contains noise interference,this paper proposes a closed-loop noise-containing virtual reference feedback tuning method for the regulator control.First,according to the control performance requirements,the controller parameters are identified online by using recursive least squares method without finding the mathematical model of the controlled object.Secondly,the instrumental variable method is used to further improve its performance index to eliminate the influence of noise interference.Finally,simulation of the pressure control system of regulator is conducted in a nuclear power plant.The results show that the closed-loop noise-containing virtual reference feedback tuning method has better control effect and anti-interference ability than the traditional PID controller control.

关 键 词：稳压器 虚拟参考反馈整定 参数辨识 噪声干扰 辅助变量法 

分 类 号：TL361[核科学技术—核技术及应用]