Abstract
Aservovalve/cylinderposition control system is studied for the case when a simplified first-order transfer function may be considered a sufficiently accurate representation of the system dynamics.Digital filters are then included in the feedback and error loop of the system, and the new closed-loop transient responseis theoretically derived. Filter coefficients, are then determined by an explicit solution to the closed-loopresponseequationby specifying the first three desired response values. The stability of this approach is also investigated for variations in the electrohydraulic system parameters.An excellent comparison between measurement and theory is established.
