A hydraulic system comprising: a hydraulic fluid pressure source, a hydraulic fluid reservoir, a hydraulically driven actuator having a first chamber and a second chamber, and a valve assembly having a first pilot-operated directional control valve and a second pilot-operated directional control valve, each including: an inlet port fluidly connected for receiving high-pressure hydraulic fluid from the hydraulic fluid pressure source, an outlet port fluidly connected for draining hydraulic fluid to the hydraulic fluid reservoir, a first actuator port fluidly coupled with the first chamber of the hydraulically driven actuator, a second actuator port fluidly coupled with the second chamber of the hydraulically driven actuator; first to fourth fail-safe solenoid-controlled pilot valves; and a pilot pressure fluid supply system.
A REDUNDANT HYDRAULIC SYSTEM
2024-11-21
Patent
Electronic Resource
English