Vibration control method and vibration control system for...

Details Vibration control method and vibration control system for... Vibration control method and vibration control system for...

2007-09-18

2007-09-18

Leslie, Michael (Department: 3745)

Power plants

Pressure fluid source and motor

Having means controlling or attenuating shock vibration,...

C091S429000, C091S454000

Reexamination Certificate

active

11299112

ABSTRACT:
A first fluid channel for operating an actuator and a second fluid channel for operating an actuator are connected to a boom cylinder, including a boom rod side line, a boom head side line. A first and second supply line and a first and second discharge line of each of the first and second fluid channels, respectively, are connected to first and second meter-in control valve and first and second meter-out control valves, respectively. When the boom operating lever is returned an operating position to a neutral position, a pressure vibration generated in each fluid channel for operating the actuators is detected, and respective meter-in control valves and meter-out control valves are controlled to dampen the pressure vibration in each fluid channel.

REFERENCES:
patent: 4923038 (1990-05-01), Lizell
patent: 5582385 (1996-12-01), Boyle et al.
patent: 5732370 (1998-03-01), Boyle et al.
patent: 5832730 (1998-11-01), Mizui
patent: 5943962 (1999-08-01), Birkhahn et al.
patent: 6817277 (2004-11-01), Yoshino

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