硬盘驱动控制的H_∞鲁棒性能研究  

Research on H_∞ robust control performances of hard disk drive

作　　者：邵岳[1] 郭庆鼎[1] 翟惠萍[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110023

出　　处：《沈阳工业大学学报》2006年第4期409-413,共5页Journal of Shenyang University of Technology

摘　　要：在硬盘驱动系统中,扰动是造成系统伺服性能下降的主要因素,为了提高系统的伺服性能,必须对扰动加以抑制.为了解决这个问题,提出了两种控制方案:一种是PID控制方法,另外一种是高精度的H∞反馈控制方法.在H∞反馈控制器控制方法中,针对被控对象的标称模型,设计了带有前馈补偿的鲁棒内环控制器(RILC),在具有模型摄动及外部扰动的情况下,保证闭环系统的鲁棒稳定和鲁棒性能.通过与PID控制方法相比较,说明带有高精度的H∞反馈控制的效果更佳.仿真结果表明,该控制方法响应速度快,抗干扰能力强,得到的控制系统性能良好,提出的方案合理而且有效.In hard disk drive system, the disturbance is a main factor of making servo performances descend, which must be restrained to improve the servo performances. Two control schemes have been pralineS. One is PID control, the other is high-accuracy H∞ feedback compensator controller. Based on nominal model of the plant, a robust intermal-loop controller with feed forward has been designed to obtain robust stability and performances under the condition of model perturbance and external disturbance, Comparing with PID control, the high-accuracy H∞ feedback control is better. The simulation results show that the proposed controller is reasonable and effective with fast respond speed and strong capadty of disturbance restraint.

关 键 词：PID控制 H∞反馈控制器 鲁棒内环控制器 模型摄动 伺服性能 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]