An Efficient Electromagnetic Model for Operational Behavior Predictions of a Non-contacting Industrial Steel Plate Conveyance System

摘要

Linear machines are electromechanical devices that can provide direct linear motions without the use of converting mechanism. The benefits over conventional rotary-to-linear counterparts are the absence of gears and transmission systems, which results in a better dynamic performance and improved reliability. Hence, more and more attentions have been addressed in the industrial servo applications with such direct-driven capability. To reduce operational noise and enhance production steadiness in a steel mill, by integrating the structural design with the linear induction motor, a non-contacting steel plate conveyance system has been proposed [1]. In such a system prototype, as shown in Fig. 1, proper stator windings are arranged to generate the desired forces, and the steel plate is performed as the movable part to be conveyed to the objective directions. For system operations, detailed analytical model that can provide fast and accurate enough information regarding the electromagnetic characteristics of the motor system is a prerequisite for the relative structure designs and drive controls.