The choice of steel in a moving coil actuator for disk drives

Abstract

For moving coil actuator (voice coil motor) implemented in disk drives, the access time is computed for different types of steels. For each type of steel used in the actuator a set of optimized dimensions are found, given the mechanical, electrical, and material constraints. A flow chart of the optimization procedure is presented and commented upon. A discussion of the practicality of the results is included.<>