A permanent magnet contactor speed tracking self-optimizing control system

Abstract

The application discloses a permanent magnet contactor speed tracking self-optimization control system and relates to the field of permanent magnet contactor control. The system comprises a closing and opening driving circuit module, a speed tracking prediction module and a strategy self-optimization module. According to the structure parameters of the permanent magnet contactor, the permanent magnet suction force is obtained by using the finite element method, the mechanical motion equation is established to build a speed monitor to obtain the speed of the moving iron core, the real-time speed of the moving iron core in the closing and opening process is accurately tracked, the speed predictor is built by taking the moving iron core running speed under the hybrid control as sample data, the speed prediction curve is constructed, the speed turning point is sought and the coil excitation is controlled according to the strategy optimization control mode, the suction force and the repulsion force are dynamically adjusted, the intelligent closed-loop control in the closing and opening process is realized, the control system has the online correction ability, the system is more stable and reliable in operation, the moving speed of the moving iron core is dynamically adjusted, the contact bounce is reduced and the mechanical and electrical life of the permanent magnet contactor is improved.