Noname

The control system of motion of an aviation simulator's platform with six degrees of freedom consists of six identical electrohydraulic servo drives with differential hydraulic cylinders. Loads on the rods of the hydraulic cylinders change when the position and orientation of the platform change. So to achieve a robust control of the platform s electrohydraulic servo drives with concerning the load changing on their cylinders rods, an optimum controller has been selected considering the nonlinearities of the electrohydraulic servo drive. The adaptation algorithms in the controller have been derived by using the reference model method and the coefficients of the controller have been calculated with the help of function Lypanov. As a result, optimum step response characteristic are received for every electrohydraulic servo drive at various platform positions.