H. Schwarz, OUTPUT-FEEDBACK STABILIZATION OF HYDRAULIC DRIVES BASED ON BILINEAR APPROXIMATIONS AND CANONICAL OBSERVERS, Proceedings of the Institution of Mechanical Engineers. Part I, Journal of systems and control engineering, 212(I2), 1998, pp. 79-85
Citations number
11
Categorie Soggetti
Robotics & Automatic Control","Robotics & Automatic Control
This paper deals with the control of hydrostatic drives on the basis o
f bilinear models. It is shown that by using bilinear models a conside
rably better approximation of the non-linear behaviour of hydraulic dr
ives 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 also for the complete operation range of the driv
es. In particular, an output feedback using a canonical observer and q
uadratic state feedback is proposed. A separation theorem for this non
-linear control scheme similar to that for linear systems is proved, i
.e. the dynamics of the observer and of the controlled plant are adjus
table separately.