ABSTRACT
Many different modeling and simulation software packages were created to perform studies in the fields of automotive, aerospace, robotics, offshore, and general hydraulics engineering, but none of them offered the full range of capabilities needed for practice. This chapter presents the stability computation method of the dual moving piston hydraulic servomechanisms and the numerical simulation by Amesim of the dynamics of a single moving body hydraulic servomechanism. The hybrid electromechanical and hydrostatic integrated servomechanisms offer a good level of security in special conditions due to the lack of the servovalves and the lack of the hydraulic power supply. The chapter also presents modeling, simulation, design, and experimental identification of a new electrohydraulic valve train drive system for internal combustion engines patented by the authors. It provides a demonstration showing Amesim capability to model electrohydrostatic actuators (EHA) in a multiscale approach. Functional model of an EHA was divided into two parts: electromechanical and electrohydraulic.
