CHARACTERISTICS COMPARISON OF SELF-PROPELLED ROTARY ACTUATOR IN CONSIDERATION OF SHAPE AND ROLLING DIRECTION OF STEEL SHEETS

Abstract

In this paper, in order to improve self-propelled rotary actuator, characteristics comparison of the actuator in consideration of shape and rolling direction of steel sheets used for the actuator is reported. A grain-oriented electrical steel sheet is used as the stator core of the actuator. The shape of steel sheets affects the characteristics of the actuator greatly. Moreover, the relation between a rolling direction of steel sheets and a direction of an exciting magnetic field is important for the starting torque and rotational stability of the actuator. Therefore, the relation between the shape and rolling direction of steel sheets in the stator of the actuator is investigated by finite element magnetic field analysis which introduced the complex E&S model which is one of a vector magnetic property utilization technique. Regarding the shape
of steel sheets, a triangle and a rectangle are investigated. As a result, in order to improve the starting torque of the actuator, it is considered that a triangle is better than a rectangle as the shape of the stator core.