Innovative Actuator with Two Controlled Degrees of Freedom for Precision Technology Applications

The paper presents the integrated topology of the innovative actuator with two-controlled degrees of freedom (translation and rotation). For the purposes of analysis, design and optimization the analytical description of the actuator is proposed. The model is based on the theory of magnetic equivalent circuit (MEC). It yields values of magnetic field that are needed for the force and torque calculation by the Lorentz equation. The magnetic field, force and torque of the actuator are verified by a precise finite element (FE) model as well as by experiment. The comparison of the results shows that the predictive analysis of the actuator by the suggested MEC model estimates the magnetic field in the air gap, total force and torque of the actuator with acceptable accuracy.