|Table of Contents|

Research on fuzzy control algorithm of cryogenic propellant-tank pressurization(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2008年02期
Page:
7-12
Research Field:
研究与设计
Publishing date:

Info

Title:
Research on fuzzy control algorithm of cryogenic propellant-tank pressurization
Author(s):
Wang ZanshelGu Zhaolin2Zhao Hongxuan3Wang Guangbiao3
1 School of Energy and Power Engineering,Xi7an Jiaotong University,Xi'an 710049,China; 2 School of Human Settlements and Civil Engineering,Xi7an Jiaotong University,Xi'an 710049,China; 3 Xi7an Aerospace Propulsion Test Technique Institute,Xi'an 710100,Chi
Keywords:
tank pressurizationfuzzy control algorithmmaximum degree of membership
PACS:
V434
DOI:
-
Abstract:
In the rocket engine ground experiments,the cryogenic propellant tank ressurization is associated with complex heat transfer,mass transfer and turbulent flow.Characterized by the nonlinear and real—time system with considerable uncertainty,the accurate mathematic model of the control system of tank pressurization is quite difficult to be established.Based on steady pressure in the tank,the pressure in the air cushion is set as the control target parameter in the system of tank pressurization with multi-pipes of different sizes.Using the algorithm of maximum degree of membership,the fuzzy control table of multi—pipes pressurization is set up;the fuzzy controller of pressure parameter is built.Furthermore,two work condition of prep—pressurization and retain pressurization were simulated,the new fuzzy control system of tank pressurization can improve the control precision and the response speed significantly,and therefore,satisfy the strict demands on the pressure and net suction head in the entrance of the rocket engine.

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