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Research on a novel PID based controller for nonmagnetic hydraulic navigation simulator with AMESim simulation

In this paper we research on the run time characteristics of non-magnetic hydraulic navigation simulator and approach a corresponding control strategy. Since the simulator is designed to be non-magnetic, it consists of long hydraulic pipes separating electric part and mechanical part to avoid the magnetic interference from electric part. Meanwhile the mechanical part is made of non-magnetic materials. Hydraulic motor, instead of electric motor, is used to drive the simulator and it stands varied load at run time. Because of the non-magnetic design, normal control strategy doesn't satisfy the system. We analyze the characteristics of the simulator system both in frequency-domain and time-domain with the help of transfer function and AMESim, which is a modeling environment for simulation of engineering, to make the characteristics clear and finally propose a PID based control strategy (denoted as Dff - PIDD2 in this paper) combining feedforward differential controller (Dff) and 2nd order differential controller (D2) for the system. At last we verify the control strategy with position tracking simulation and obtain a satisfied result.