Exploitation and Application of Analytical Software of Pick-up Torque of Polarized Magnetic System

During the course of designing electromagnetic relay with permanent magnet, relay parameters are determined by association working experience with experimental analysis. But the process obviously is so complex, therefore a long design period is needed. Based on uniform mathematic model deduced from four typical types of polarized magnetic systems, this paper seeks to introduce the software of pick up torque analysis of polarized magnetic systems, programmed by Visual Basic 6.0. The software can be used to study effect of permanent parameters (such as the size,!area of polar front, permanent magnetic starting working point and revertible permeability of permanent magnet etc.) on attractive torque of polarized magnetic systems (including permanent torque, polarized torque and electromagnetic torque). The conclusions of this paper are valuable in theory of optimizing design of electromagnetic relay with permanent magnet.