Structural resonance analysis of EMA servo system with low frequency modal load

In this paper, a principle of a limit cycle structural resonance is researched, aiming to solve the problem when an Electromechanical Actuator (EMA) Servo System works with a low frequency model load. This paper analyzes a load of an EMA servo system and the load effect modal. An investigation of the way to void the limit cycle structural resonance is proposed, comparing with the experimental results. From the simulation and the test results, this method can enhance the resonance frequency of a load system, and the limit cycle structural resonance will disappear. The dynamic properties of the EMA servo system will be improved efficiently.