Dynamic Simulation of Electromagnetic Actuators Based on the Co-Energy Map

摘要

The development of new and efficient control methodologies demands the availability of mathematical models for the electromagnetic device under control. These models must be solved with great accuracy and speed. The finite element method (FEM) gives truthful results but computational demanding increases with device geometrical complexity. This paper proposes a new method for dynamic behavior simulation that uses FEM software at its early stage, to obtain the co-energy map for devices concerning static positions for different excitation currents. Inductance and force maps are derived from the co-energy map. A numerical model of a case study is built with Matlab to obtain device dynamic response. The software implementation procedure is described in detail. The achieved results are compared with the ones obtained from the FEM tool analysis. The small computation effort required by the proposed analysis method makes possible that complex control methodologies can be developed and tested based on the proposed model.