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Characteristics of Proportional Flow Control Poppet Valve with Pilot Pressure Compensation

Electro-hydraulic proportional flow valves are widely used in hydraulic industry. There are several different structures and working principles. However, flow valves based on the existing principles usually have some shortcomings such as the complexity of the system and additional energy losses. A concept for a two-stage poppet flow valve with pilot pressure drop – pilot spool opening compensation is presented, and the linear relationship between the pilot stage and main stage, the semi-empirical flow equation are used in the electronic flow controller. To achieve the accurate control of the outlet flow, the actual input voltage of the pilot spool valve is regulated according to the actual pilot pressure drop, the desired flow rate and the given input voltage. The results show that the pilot pressure drop – pilot spool opening compensation method is feasible, and the proposed proportional flow control valve with this compensation method has a good static and dynamic performance.

Identiferoai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:29301
Date January 2016
CreatorsHuang, Jiahai, Quan, Long, Gao, Youshan
ContributorsDresdner Verein zur Förderung der Fluidtechnik e. V.
PublisherTechnische Universität Dresden
Source SetsHochschulschriftenserver (HSSS) der SLUB Dresden
LanguageEnglish
Detected LanguageEnglish
Typedoc-type:conferenceObject, info:eu-repo/semantics/conferenceObject, doc-type:Text
Source10th International Fluid Power Conference (10. IFK) March 8 - 10, 2016, Vol. 1, pp. 157-168
Rightsinfo:eu-repo/semantics/openAccess
Relationurn:nbn:de:bsz:14-qucosa-196933, qucosa:29237

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