Long seek control of hard disk drives using reference governor: An improved result

Abstract

In this paper, we propose to use combination of the reference governor with outer feedback and model following control method for long seek control problem of hard disk drive. The real hard disk drive is a very high dimensional system and it is not adequate to use it as a control model. In the model following control scheme, a lower dimensional system is used as a control model to generate the control input and the reference input for the real hard disk drive. By using the reference governor with outer feedback for the control model, we can keep the constraint condition and get a good response. Moreover, we examine the effectiveness of the proposing method through the simulation for the benchmark problem.