硬盘读写磁头定位数字控制器的设计  

The Design of a Computer Harddisk Read/Write Headposition Controller

作　　者：梅志千[1] 

机构地区：[1]河海大学机械学院机电工程学院

出　　处：《河海大学机械学院学报》1997年第2期12-17,共6页

摘　　要：本文首先建立了磁头定位系统的数学模型——能观的状态标准型,然后用Tustin法求得了离散化的Z变换传递函数.根据根轨迹走向,引入相位超前的数字校正.最后用MATLAB进行了数字仿真.In this paper, a model for read/write head is presented at first, i. e. , the standard state space system of observability, and then, the continuous-time state-space is converted to discrete time G(z) by means of Tustin method. According to the orientation of the locus of the roots, a phase lead digital controller with some zeros is introduced. Finally , a numerical example is given to show the robustness of this design with MATLAB.

关 键 词：鲁棒性 计算机 读写磁头 数字控制器 硬盘 

分 类 号：TM571.65[电气工程—电器] TP332.302[自动化与计算机技术—计算机系统结构]