Abstract
The paper presents new concept of control of the linear hydraulic actuator. Linear hydraulic actuators are used in the industry mainly for manipulation with heavy products and in the technologies which requires high forces, dynamic movements and high accuracy. Due to the design of the production equipment's the differential cylinders are used for the realization of the linear hydraulic servo drives controlled by the servovalves. The real properties of the classical concept of the hydraulic servo drive will be summarized and new concept of control based on the full hydraulic resistance bridge will be presented in the paper. Finally, the realization of the integrated actuator will be shown and results from the laboratory testing of the digital closed loop control using the embedded control system will be demonstrated.
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