Patent ID: 7269947
Filing Date: 2007-09-18
Classification: F15B

Abstract:
1. A vibration control method for a fluid pressure control circuit having a plurality of actuators, wherein respective fluid channels for operating the actuators are provided with meter-in control valves for controlling fluid supply to the fluid pressure actuators and with meter-out control valves for controlling fluid discharge from the fluid pressure actuators, the method comprising the steps of: controlling the meter-in control valves and meter-out control valves on the basis of an operation command from an operating lever to operate the fluid pressure actuators when the operating lever for the actuators is in an operating position; detecting a pressure vibration generated in the respective fluid channels; and controlling the meter-in control valves and meter-out control valves to dampen the pressure vibration in the respective fluid channels when the operating lever is returned from the operation position to a neutral position.