Time Optimal Seek Trajectories for a Dual Stage Optical Disc Drive Actuator

A closed form solution for the time optimal control of a dual actuator disc drive system that takes into account the physical constraint limiting the relative motion of the fine and coarse actuator has been derived. The result is useful for determining track seeking strategies for high performance optical discs. The application of the necessary conditions to a simplified model of the compound actuator is presented and a solution derived.