Design and simulation of an electromagnetic microactuator of fuze safety and arming device

This research is developed and aims at a new microactuator, which is used in the fuze safety and arming device (S&A) with a planar structure fabricated by the MEMS technology. In order to satisfy its engineering application requirements of the fuze service, which are small volume with S&A barrier dimension of 25 mmtimes25 mmtimes2 mm, large force, long stroke as well as non-contactable, and a complex fuze system environment, a disk-type electromagnet microactuator prototype was designed and developed. Then, some main parameters of the designed electromagnetism microactuator had been estimated and optimized. Numerical simulation for three typical of microactuator had been also done, including their outputting force and generating heats, and their anti-interference performances in magnetic field. In order to test their movements, driving forces and performances of the developed microactuators, a suit of testing platform was designed and developed. The experimental results showed their overall performances of the developed microactuators under operating conditions could meet the engineering application requirements of a fuze system.