级联RTAC系统动态神经网络辨识与分散镇定控制  

Dynamic neural network identification and decentralized stabilization control of cascade RTAC system

作　　者：张宇[1,2] 程开新 竺俊杰 武国勋 姚熊亮 ZHANG Yu;CHENG Kai-xin;ZHU Jun-jie;WU Guo-xun;YAO Xiong-liang(Qingdao Innovation and Development Center of Harbin Engineering University,Qingdao Shandong 266400,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin Heilongjiang 150001,China;School of Electrical Engineering,Dalian University of Technology,Dalian Liaoning 116024,China)

机构地区：[1]青岛哈尔滨工程大学创新发展中心,山东青岛266400 [2]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [3]大连理工大学电气工程学院,辽宁大连116024

出　　处：《控制理论与应用》2022年第8期1451-1459,共9页Control Theory & Applications

基　　金：国家自然科学基金项目(5197090325,51809054);黑龙江省自然科学基金项目(LH2020E075)资助.

摘　　要：针对含不确定关联项的级联RTAC系统的镇定控制问题,提出了一种基于动态神经网络辨识的分散控制方案.应用拉格朗日方程建立起了考虑不确定非线性作用力的级联RTAC系统数学模型,采用动态神经网络实现级联RTAC系统中不确定关联项的在线辨识,通过构造含神经网络权值矩阵迹的Lyapunov函数,证明了辨识误差的一致有界性.通过动态神经网络辨识不确定关联项、补偿系统建模误差,建立级联RTAC系统分层滑模控制算法,以实现级联RTAC系统的高精度分散镇定控制.数值仿真验证了动态神经网络的引入对级联RTAC系统分散镇定控制系统瞬态幅值抑制、稳态精度提升的效果.A dynamic neural network based decentralized control scheme is proposed for the stabilization of cascade RTAC system.The mathematical model of the cascade RTAC with uncertain interconnected forces is derived.The dynamic neural network is adopted for identification of uncertain interconnected terms in the mathematical model,and uniform boundedness theorem of identification errors is proved,via introducing Lyapunov function including the trace of weight matrix of dynamic neural network.Then,a decentralized stabilization control scheme of cascade RTAC system is designed using the hierarchical sliding mode algorithm to precisely stabilize the cascade RTAC system,based on dynamic neural network identification and compensation of modeling error.Numerical simulations are conducted to prove the effectiveness of the proposed control scheme with the introduction of dynamic neural network identification in suppression of vibration amplitude and control precision.

关 键 词：级联RTAC 动态神经网络 分散控制 不确定关联项 辨识 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] TP183[自动化与计算机技术—控制科学与工程]