Abstract
Enhanced anti-windup (AW) schemes are designed for the dual stage hard disk drive (HDD) system to solve the amplitude saturation problem of the secondary actuator. The sensitivity decoupling approach is used for designing the nominal linear controllers for the dual stage HDD systems. The AW compensators for the system are synthesized by solving a linear matrix inequality optimization. The AW scheme is further enhanced with a filter, which can be designed by the robust control methodologies. The proposed schemes and an existing AW scheme are evaluated and compared by simulation on a dual stage HDD benchmark control problem with white noise vibration disturbance.
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