Two degree-of-freedom dual-stage actuator controller design for hard disk drives

摘要

This paper presents a new controller design method for dual-stage actuators. The controller consists of two stabilizing controllers for VCM and MEMS actuators and two main controllers (slave and master). The slave and master controllers are used to shape the sensitivity of the closed loop system at low and high frequency, respectively. With the proposed method satisfactory sensitivity and complementary sensitivity are achieved.