APPLICATION OF BILINEAR SYSTEM MODELS AND DESIGN METHODS TO HYDROSTATIC DRIVES

摘要

This paper deals with the control of hydrostatic drives on the basis of bilinear models. It is shown that by using bilinear models a considerably better approximation of the nonlinear behavior of hydraulic drives can be achieved compared with common linear models. The bilinear model approach gives rise to control results valid not only for fixed operating points but for the complete operation range of the drives. Part of the paper is also the presentation of methods to bilinearize the nonlinear dynamic models for hydraulic drives and of some approved control schemes.