engleski

Different Approaches for Hydraulic Servosystem Control

High performance demands in modern controlled mechanical systems, such as fast dynamics, and high accuracy under large operation conditions, require efficient control algorithms. The main problems in the control of high performance mechanisms, particularly if they are controlled by hydraulic servosystems, are due to significant nonlinearities and time variations of system parameters. Such nonlinearities and parameter time variations are the consequences of physical characteristics, disturbances and load variations. This paper presents the results of different control approaches. These are the approach using a PID controller and the one using an inverse dynamics controller. Such controllers are considered as classical approach controllers. Robust control approaches have been tested as well. These are a controller based on disturbance observation and compensation, and a sliding modes controller.

servohydraulics; robust control; sliding modes

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