Discrete-time H2optimal reset control with application to HDD track-following

  • Authors:

  • Hui Li;Chunling Du;Youyi Wang

  • Affiliations:

  • School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore and Data Storage Institute, A*STAR, Singapore;Data Storage Institute, A*STAR, Singapore;School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore

  • Venue:
  • CCDC'09 Proceedings of the 21st annual international conference on Chinese control and decision conference
  • Year:
  • 2009

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Abstract

This paper proposes a design method of discrete-time reset control systems with the reset time instants pre-specified. With a base linear system designed conventionally, the discrete-time reset law design aims at improving disturbance suppression of the system. The design method can be converted to a standard H2 optimal control problem and the solution of the controller is obtained by solving Riccati equations. The proposed reset controller design method is applied to track following stage of a hard disk drive servo system.