非线性轧机机电系统电机速度鲁棒非脆弱控制  

Speed robust and non-fragile control on motor of rolling mill's nonlinear mechanical and electrical system

作　　者：韩东颖[1] 时培明[2] 赵东伟[2] 

机构地区：[1]燕山大学车辆与能源学院,河北秦皇岛066004 [2]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《电机与控制学报》2015年第3期82-87,95,共7页Electric Machines and Control

基　　金：国家自然科学基金(51005196);河北省自然科学基金(E2012203194)

摘　　要：针对轧机机电系统电机速度鲁棒跟踪非脆弱控制问题,建立了含非线性、不确定性、负载转矩轧机机电传动系统动力学模型。将系统的非线性按参数不确定性处理,通过H∞理论、Lyapunov稳定性理论和线性矩阵不等式(linear maxtrix inequality,LMI)方法得到了通过状态反馈使得系统满足二次稳定、抑制外界干扰的充分条件。为了实现给定速度信号跟踪非脆弱控制,设计了前馈补偿器。结果表明所设计控制器的非脆弱性表现为控制器参数的鲁棒性,即可以通过控制器参数的直接选取达到非脆弱控制效果,能够实现电机速度鲁棒跟踪非脆弱控制及对外界干扰的抑制。实例仿真验证了该方法的可行性和有效性。For the problem of motor speed robust tracking and non-fragile control on the electromechanical system of rolling mill, considering nonlinearity, uncertainty and load torque, the dynamic model of elec-tromechanical transmission system of rolling mill was built. As the nonlinearity was dealt with parameter uncertainty, the sufficient condition which lets the system attain quadratic stability and the outside dis-turbance attenuation was got based on H∞ theory, Lyapunov stability theory and the method of LMI （Line-ar Maxtrix Inequality（LMI））. In order to achieve the given speed signal tracking and non-fragile control, the feedforward and compensatory controller was designed. The results show that the non-fragile of the controller reflected as the parameter robustness of the controller, so the effect of the non-fragile control could be fulfilled via choosing the parameters of the controller directly. The feasibility and validity of the method was verified by the simulation examples.

关 键 词：轧机 机电系统 非线性 鲁棒 非脆弱 

分 类 号：TM341[电气工程—电机]