Data-Driven Multiple Resonant Filter Design Integrating Notch Filters and Peak Filters in Dual-Stage Actuator Hard Disk Drives

Magnetic-head positioning performance of hard disk drives in data center infrastructures is fundamental to the large storage capacity. The aim of this paper is to develop a feedback controller design method for hard disk drives integrating robust stabilization and disturbance rejection simultaneously. Notch filters for resonant mode stabilization and peak filters for disturbance rejection are designed simultaneously by resonant filters in the same structure. Multiple resonant filters are designed by frequency response data-driven iterative convex optimization for robust stabilization and disturbance rejection at the same time. The disturbance rejection performance improvement with robust stability is validated in a dual-stage actuator hard disk drive benchmark problem.