Design of electric hydrostatic actuator

Power electric actuation technology is the inevitable demand of the new generation of aircraft energy optimization and management. It is an important key technology of multi / full electric aircraft, and it is an important guarantee for improving aircraft safety and improving maintainability. Over the past twenty years, theoretical and practical researches have proved that the use of power and electric actuators instead of hydraulic actuators is an inevitable trend. With the increasing maturity of multi electric and all electric actuators, it will speed up this development. As an important component of the power electric actuation system, the electric hydrostatic actuator technology is a typical representative of the successful application of the distributed hydraulic system. This paper will introduce the difficulties and key points of the comparison of EHA control technology, high speed wet-type PMSM's design and control in the development of EHA, and at the end of the article, give the dynamic and static test results of the EHA actuation system.