Abstract: “Mechatronic equipments such as a head positioning system of hard disks have been required to provide fast and accurate positioning. To achieve these requirements, a mode switching control (MSC), which encompasses such diverse structures and functions of the controller is switching to that was used extensively. To achieve to a desired position in this matter, the model a controller parameters are assessed by some evolutionary algorithms like genetic, patter search and simulated annealing. The obtained parameters show that the values of these algorithms have good effect on their output. In this paper, the best algorithm, could be proper is introduced.”

Keywords: Disk drives, mode switching control, genetic algorithm, pattern search algorithm, simulated annealing algorithm.