HYDRAULIC DRIVE CONTROL SYSTEM WITH A STATIC NONLINEARITY COMPENSATION

A. A. Losenkov, S. V. Aranovskiy


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Abstract

A relay-proportional control law supplemented with a static nonlinearity compensation of an electric hydraulic amplifier is proposed to control a position of a hydraulic drive for a linear reference signal tracking. The closedloop stability for suggested control law is shown. Experimental results are carried out on a laboratory prototype of a forestry crane and show high achieved tracking performance.


Keywords: hydraulic drive, relay control, nonlinearity compensation
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