Model reference adaptive control for time varying hydraulic systems
This paper focus on adaptive control of an electric-hydraulic servo position control system, in which an optical-electric pulse coder is used as the position feedback sensor. The pressure feedback and MRAS controller are introduced to enhance the system damp ratio and proper frequency. Using Matlab as a tool, a theoretic analysis and digital simulation have been made to show that the pressure-feedback MRAS controller has high accuracy, good dynamic character and strong robust while the system parameters changed at different oil temperature.