Robust H∞ stabilization of a hard disk drive system with a single-stage actuator

9th Curtin University of Technology Science and Engineering International Conference 2014

自然科学;工业技术

Harno, Hendra G.^1 ; Woon, Raymond Song Kiin^1

Department of Mechanical Engineering, Faculty of Engineering and Science, Curtin University, Sarawak, Miri

98009, Malaysia^1

关键词: Algebraic Riccati equations;    Differential evolution algorithms;    Disturbance attenuation levels;    Integral quadratic constraints;    Linear time invariant;    Non-convex constraints;    Non-linear optimization problems;    Stabilizing solutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/78/1/012029/pdf
DOI  :  10.1088/1757-899X/78/1/012029

来源: IOP

【 摘 要 】

This paper considers a robust H∞control problem for a hard disk drive system with a single stage actuator. The hard disk drive system is modeled as a linear time-invariant uncertain system where its uncertain parameters and high-order dynamics are considered as uncertainties satisfying integral quadratic constraints. The robust H∞control problem is transformed into a nonlinear optimization problem with a pair of parameterized algebraic Riccati equations as nonconvex constraints. The nonlinear optimization problem is then solved using a differential evolution algorithm to find stabilizing solutions to the Riccati equations. These solutions are used for synthesizing an output feedback robust H∞controller to stabilize the hard disk drive system with a specified disturbance attenuation level.