Abstract:

Aiming at the problem that the current existing device for testing the suction force of the relay cannot accurately measure the suction force of the magnetic holding relay near the steady state position,a suction force measurement scheme near the steady state position based on the double dial is proposed.Combined with the specific structure and parameters of a certain type of miniature magnetic holding relay,the mechanical structure design and electronic control system design of the static suction reaction force characteristic device were designed,and the control software was compiled to achieve the accurate measuring of the suction force and the resultant force corresponding to the different action positions of the relay.The test results show that the magnetic holding relay static attraction reaction characteristic test device developed in this paper solves the problem that the original equipment cannot measure the suction force near the steady state position.This equipment is designed for technical personnel to improve the magnetic holding relay products.Manufacturing process quality control laid the foundation for testing.

Key words: electromagnetic relay, suction reaction characteristics, PLC, mechanical structure