基于鲁棒L_2的无刷直流直线电机定点控制  

Set-point control of brushless direct current linear motor based on robust L_2

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110178

出　　处：《沈阳工业大学学报》2008年第5期494-497,共4页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(50577043);辽宁省自然科学基金资助项目(20062041)

摘　　要：针对无刷直流直线电机(BLDCLM)伺服系统输出能无延迟、无超调地跟踪输入指令的变化,而常规PID控制器很难同时满足系统对输入的跟踪性能和对不确定性的抗扰性能要求这一现状,提出鲁棒L2跟踪控制策略,亦即有针对性的引入非线性控制抑制扰动和实现对输入指令的准确跟踪.对具有变化负载和驱动增益变量的BLDCLM定点控制进行鲁棒L2控制器设计,并运用MATLAB/SIMULINK仿真得出在不同负载条件下的阶跃响应和相应的电机速度、位移响应曲线.仿真结果表明,任何状态下系统都有最佳动态响应,从而证明了该方法的合理性和有效性.The output of brushless direct current linear motor（BLDCLM）servo system is able to track the changes in the input command without delay and overshoot. However, it is difficult to meet both tracking performances to input signal and disturbance resistant performances to uncertainties using conventional PID controller. Therefore, robust La tracking control strategy was proposed to solve the mentioned problems. The nonlinear control was employed to restrain disturbances and trace input signal accurately. For the BLDCLM set-point control with variations of load and driver gain, the robust L2 controller was designed, and velocity and position response curves under different loads were obtained by MATLAB simulation. The simulation results show that the system has optimum dynamic response under any states, and the proposed scheme is reasonable and available.

关 键 词：无刷直流直线电机 鲁棒L2控制 非线性控制 定点控制 MATLAB仿真 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]