无刷直流直线电机鲁棒定位控制研究  

Research of Brushless Direct Circuit Linear Motor Robust Set-point Control

作　　者：刘爱民[1] 林莘[1] 梁亚茹[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110023

出　　处：《组合机床与自动化加工技术》2008年第7期74-76,80,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然基金项目(50577043);辽宁省自然基金项目(20062041)

摘　　要：鲁棒L2控制是用一个结构和参数固定不变的控制器,保证在不确定性对系统影响最严重的情况下,也能满足性能要求,这是鲁棒L2控制的突出特点。由于无刷直流直线电机(BLDCLM)数学模型具有非线性的特点,因此,对直线电机有针对性的引入非线性控制可以抑制扰动和实现对输入指令的准确跟踪。本文提出针对具有变化负载和驱动增益变量的BLDCLM的定位控制,进行鲁棒L2控制器的设计,保证在出现时变参数不确定和外部干扰的情况下,使系统定位精确。文章对该系统的控制目标、控制方式进行了分析研究并得出在不同的负载条件下的阶跃响应和相应的电机速度和位移响应曲线。运用MATLAB/SIMULINK仿真,仿真结果证明了任何状态下系统都有最佳的动态响应。Robust L2 control is a controller with constant structure and parameter, it can satisfy performance require when system is heavily affected by uncertainty. It is a prominent feature for Robust L2 control. Because of Brushless Direct Circuit Linear Motor （BLDCLM） mathematical model with nonlinear leading in nonlinear control can restrain destabilization, trace input signal for BLDCLM. The paper presents robust L2 controller design with variable load and driver gain variations and ensure that the system can be setting-point accurate when uncertain time-varying parameter and external disturbance occur. The paper also study the system control object and control mode, and give step response under different load, velocity and position response curve corresponding of motor. MATALB/SIMULINK software is applied in BLDCLM set-point control. The simulink results show that the system with optimum dynamic response are gained under any state.

关 键 词：鲁棒L2控制 BLDCLM 定点控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]