Design of Explicit Model-Following Control for the Spindle Motor in CD-ROM Drives

The design method of explicit model-following control theory is presented in this paper, which is applied to the speed control and responses improvement of a spindle motor of CD-ROM drives. The technique of command generator tracker is applied to convert the model-following control into a regulator problem. The model mismatch error is minimized by means of linear quadratic optimal control. Computer simulation demonstrates that the speed controller possesses robustness against model uncertainty and external disturbances.