Multi-objective Optimization of Linear Proportional Solenoid Actuator

This paper employed a multi-objective Genetic Algorithm(GA) process to optimize the structure parameters of Linear Proportional Solenoid(LPS). And designed objectives include magnitude of static push force, stability of push force with displacement in working range and push force to mass ratio. A two-dimensional finite element analysis model is presented to reduce the large calculation time generated by GA process. The optimization process result of LPS shape parameters is obtained and the optimal LPS is manufactured. Through using a high-precision measuring device in the static push force test, a comparison result between conventional shape and optimal shape shows that the proposed optimization strategy is feasible.