| Title |
Design and Stability Test of a HDD Hybrid Controller Using Sliding-Mode Control |
| Authors |
변지영(Byun Ji-Young) ; 곽성우(Kwak Sung-Woo) ; 유관호(You Kwan-Ho) |
| Keywords |
HDD (hard disk drive) ; VCM Actuator ; Bang-Bang Control ; Sliding-Mode Control |
| Abstract |
This paper presents the design of a now controller for the read/write head of a hard disk drive. The general controller for seeking is the time-optimal control. However if we use only the time optimal control law, this could be vulnerable to chattering effect. To solve this problem, we propose a modified controller design algorithm in this paper. The proposed controller consists of bang-bang control for seeking and sliding-mode control for tracking. Moreover, to test the robustness and stability of control system, a bounded disturbance is selected to maximize a severity index. Simulation results show the superiority of the proposed controller through comparison with time optimal VSC(variable structure control). |