Highly maneuverable aircraft has redundant electrohydraulic actuators that generate the forces to drive the aircraft control surfaces. Two problems are important in these actuators. First, during reconfiguration of the actuator channels the hydraulic system works in the full range of its parameters. It leads to strongly nonlinear models of the redundant servo. Second, the frequency bandwidth of...

Výskum vlastností hydrostatickej transmisie regulovanej rôznymi regulátormi In this paper the possibility of a uses control system with a signal processor DSP to control hydrostatic transmission was described. A hydrostatic transmission with pump variable efficiency and engine radial with constant working absorptivity was chosen. The control of the efficiency of pump was realized by using the e...

The purpose of this work is to design a neurofuzzy controller, which can be used in a microcomputer to control the position of an electrohydraulic servo actuating primary flight controls. More specifically, an artificial intelligence based neuro-fuzzy controller is synthesized to solve a robust servomechanism problem. Indeed, the artificial intelligence based synthesis of control law provides a...

BACKGROUND AND AIMS Hepatolithiasis is prevalent in south-east Asia and presents a difficult management problem. Intrahepatic strictures with or without awkward ductal angulation of the biliary tree are the main reasons for the reported high incidence of postoperative residual stones. Without proper treatment, biliary strictures and residual stones can lead to repeated episodes of cholangitis, ...