Design of a servomechanism with sliding mode for a disk driveactuator

摘要

Considers a servomechanism design with sliding mode for diskdrives. The proposed servomechanism consists of suboptimal time controlfor seek, and sliding mode control for settling and tracking. For fastseek, suboptimal time control with feedforward is used. For settling andtracking, observer based sliding mode control with a fixed linearswitching hyperplane is designed in the discrete time domain. Throughthe results of simulation and experiment, it is shown that the proposedservomechanism is effective to reduce velocity tracking error duringsettling