Research on virtual prototyping technology of dynamic characteristics on the example of hermetically sealed electromagnetic relay

With the development of FEM and other modern numerical analysis methods, simulation analysis methods for hermetically sealed electromagnetic relays(HSER)have developed rapidly. A much more precise simulation analysis can be obtained for the design and analysis of static, dynamic, thermal and mechanical properties of relays in recent year. Taking the simulation method of dynamic and static characteristics of HSER as an example, the application of virtual prototyping technology (VPT) in electromagnetic relay is studied. Firstly, the VPT calculation model of static characteristics for a relay is established, and the attractive force and static data table of HSER are obtained. On the basis of the establishment of flexible part, the VPT model of dynamic characteristics is established. Finally, the parameters of the relay, such as the make time, release time, make voltage, release voltage, dynamic contact resistance, bounce characteristics of make spring and bounce characteristics of release spring, are calculated. The quantitative analysis from design to performance for a relay is realized. Based on this, the VPT model is applied to a certain type of relay. In the parameter design of a HSER, the performance improvement and optimization of relay are realized.