Electrodynamic Modeling of Magnetic Forces of a Spring-Type Microactuator

The electrodynamic model of the spring-type microactuator is studied with the aim of investigating the mechanical torques depending on the physical parameters of the microactuator and the exciting current. In the case of constant electromagnetic flux, an explicit formula for the electromagnetic torque is derived. Numerical calculations demonstrate significant changes in the electromagnetic torque depending on the geometry of the microactuator and the ferromagnetic properties of its constitutive parts.