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contributor authorWu, Shuai
contributor authorJiao, Zongxia
contributor authorYan, Liang
contributor authorDong, Wenhao
date accessioned2017-05-09T01:16:31Z
date available2017-05-09T01:16:31Z
date issued2015
identifier issn0022-0434
identifier otherds_137_06_061010.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/157539
description abstractHigh flow rate electrohydraulic servo valve is widely applied in hydraulic servo systems. Typical high flow rate servo valve is threestage nozzle flapper pilot structure which is complicated, unreliable, and highly costly. This study proposed a new twostage structure high flow rate and quick response electrohydraulic spiral pilot servo valve (ESPV) using a novel hydraulic full bridge spiral pilot stage (FBSPS) as hydraulic amplifier. Its structure is simpler than traditional servo valve which could increase reliability. A design parameters optimization method for servo valve is proposed. It is using an optimization objective function which can balance dynamic performance, static performance, and pilot state efficiency for different design objectives. The particle swarm optimization (PSO) method was applied to get the best key design parameters of ESPV. A research prototype was developed based on the optimized parameters for fast response. The experimental results indicated that the frequency bandwidth (−3 dB amplitude attenuation and −90 deg phase lag) of the ESPV is up to 150 Hz at 20% of full range. This frequency response performance is competitive with existing servo valves, and the simpler structure can improve reliability and reduce cost. Thus, it may have great potential in hydraulic servo system with high reliability requirement, such as aircraft hydraulic servo control system.
publisherThe American Society of Mechanical Engineers (ASME)
titleA High Flow Rate and Fast Response Electrohydraulic Servo Valve Based on a New Spiral Groove Hydraulic Pilot Stage
typeJournal Paper
journal volume137
journal issue6
journal titleJournal of Dynamic Systems, Measurement, and Control
identifier doi10.1115/1.4029356
journal fristpage61010
journal lastpage61010
identifier eissn1528-9028
treeJournal of Dynamic Systems, Measurement, and Control:;2015:;volume( 137 ):;issue: 006
contenttypeFulltext


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