{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T20:37:31Z","timestamp":1777927051881,"version":"3.51.4"},"reference-count":21,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2016,2,21]],"date-time":"2016-02-21T00:00:00Z","timestamp":1456012800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering"],"published-print":{"date-parts":[[2016,5]]},"abstract":"<jats:p>The traditional parameter design rule for the nozzle\u2013flapper valves has always followed the maximum control pressure sensitivity criterion; however, this article queries the validity of this traditional parameter design theory for the comprehensive performance characteristics of a flapper\u2013nozzle valve. Accordingly, a new parameter design rule, which involves symmetry, linearity and sensitivity of the control pressure, was constructed from a detailed and rigorous mathematical derivation that employs a non-dimensional analysis method. Then, an effect verification of the new criterion and a comparison between the pressure\u2013flow curves and three key valve coefficients, which are dominated by the traditional rule and the new criterion, respectively, are performed. Finally, the comprehensive performance characteristics of the flapper\u2013nozzle valve, such as the reliability, response, accuracy, sensitivity, efficiency, anti- disturbance and control pressure range, which are produced by the two parameter design rules, are compared. The results indicate that the performance of nozzle\u2013flapper valve followed by the new parameter design criteria is superior to the performance directed by the traditional one with respect to various indexes, such as the reliability, response, accuracy and anti-disturbance. In addition, for the design of nozzle\u2013flapper valves, the studies have also revealed that the optimal values of the structural parameter are dependent on the actual flapper motion ranges and the priority of the above-mentioned performance indexes. All these new findings can develop and supplement the existing design theory of nozzle\u2013flapper valve and can also be beneficial to the design of double-nozzle\u2013flapper electro-hydraulic servo valves.<\/jats:p>","DOI":"10.1177\/0959651816628718","type":"journal-article","created":{"date-parts":[[2016,2,22]],"date-time":"2016-02-22T21:04:20Z","timestamp":1456175060000},"page":"452-466","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Design criterion involving comprehensive performance characteristics of nozzle\u2013flapper valves"],"prefix":"10.1177","volume":"230","author":[{"given":"Yuchuan","family":"Zhu","sequence":"first","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China"},{"name":"Department of Aerospace Engineering, University of Maryland, College Park, MD, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shangshu","family":"Fei","sequence":"additional","affiliation":[{"name":"College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2016,2,21]]},"reference":[{"key":"bibr1-0959651816628718","first-page":"2447","volume-title":"Proceedings of the eighth international conference on electrical machines and systems (ICEMS)","volume":"3","author":"Li 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