HYDRAULIC CONTROL SYSTEM

A hydraulic control system for controlling a flow control valve to drive a hydraulic actuator in response to operation of a control device. This system includes a position detecting sensor for detecting a displacement of the control device, an operation detecting sensor for detecting an operating state of the flow control valve, and a hydraulic control unit for receiving detection signals from the position detecting sensor and the operation detecting sensor. The hydraulic control unit includes a control signal generator for generating a control signal to control the flow control valve to an opening degree corresponding to the displacement of the control device, a corrector for establishing, as a bias, a value of the control signal occurring when the operation detecting sensor detects start of an operation of the flow control valve, and for applying the bias to the control signal generated by the control signal generator, and a control signal output for outputting a corrected control signal produced by the corrector to the flow control valve.