According to the unstable and nonlinear performances of servo valve-controlled hydraulic motor, classical control methods based on linear theory are gradually unable meet high-performance requirements system. Using motor third-order active disturbance rejection (ADRC) improve dynamic performance system is feasible. The mathematical model simulation ADRC for established respectively. For phase l...

The article presents the problem of synchronization piston rods velocity multi-cylinder electro-hydraulic servo drive. This task was presented on example a heavily loaded mobile caterpillar platform. For levelling platform, four-post support mechanism with proportional valve control system used. A linear external controller to synchronize movement cylinders used and non-linear internal for each...

The rehabilitation exoskeleton is an effective piece of equipment for stroke patients and the aged. However, this complex human–robot system incurs many problems, such as modeling uncertainties, unknown interaction, external disturbance, actuator fault. This paper addresses adaptive fault-tolerant tracking control a lower limb joint driven by electro-hydraulic (EHA). First, model built consider...

Aiming at the problems of low control precision and slow response speed traditional actuators in hydraulic systems, mathematical model valve-controlled cylinder is established as research object, strategy fuzzy RBF neural network proposed to servo valves On basis control, are integrated. According system, a tracking controller designed realize precise real-time feedback system. The simulation r...