| 摘要 |
A fluid regeneration circuit for a hydraulic system having at least one hydraulic actuating cylinder associated therewith, the present circuit including a control valve connected in fluid communication with the actuating cylinder for controlling the operation thereof, a regeneration valve connected in fluid communication with the control valve and with the head and rod end portions of the cylinder, a position sensor coupled to the actuating cylinder for sensing the position of the piston within the cylinder during movement thereof, and a controller coupled to the position sensor, the control valve and the regeneration valve for controlling fluid flow to and from the actuating cylinder. The controller is operable to receive signals from the position sensor and determine the velocity of the piston based upon the signals outputted by the position sensor, and it is operable to output appropriate signals to the regeneration valve to regenerate fluid flow to the head end portion of the actuating cylinder when the velocity of the piston is determined to be above a first predetermined threshold velocity, and to discontinue fluid flow to the head end portion of the actuating cylinder when the velocity of the piston is below a second predetermined threshold velocity.
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