| 摘要 |
A 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 shift position of the control device, a speed detecting unit for detecting a shifting speed of the control device, and a controller for generating a control signal to control the flow control valve based on the shift position and shifting speed of the control device, and outputting this control signal to the flow control valve. The controller includes a first signal computing unit for determining a first control signal value based on a shift of the control device, a second control signal computing unit for determining a second control signal value based on lapse of time from start of the shift of the control device and the shifting speed of the control device, and a comparing unit for comparing the first control signal value and the second control signal value and selecting the value providing the smaller opening amount of the flow control valve to act as the control signal. The control signal generated is such that the lower the shifting speed is, the smaller amount the flow control valve is opened, whereby the slower the control device is shifted, the slower the hydraulic actuator is operated. |
