Zhu Mingqing
CAD Centre, Huazhong University of Science and Technology, Wuhan, China
Xie Gang
CAD Centre, Huazhong University of Science and Technology, Wuhan, China
Shao Jinato
Suzhou Tongyuan Software&Control Tech. Co., Suzhou, China
Chen Lipiing
CAD Centre, Huazhong University of Science and Technology, Wuhan, China
Zhou Fanli
Suzhou Tongyuan Software&Control Tech. Co., Suzhou, China
Ladda ner artikel
http://dx.doi.org/10.3384/ecp15118557Ingår i: Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015
Linköping Electronic Conference Proceedings 118:60, s. 557-563
Publicerad: 2015-09-18
ISBN: 978-91-7685-955-1
ISSN: 1650-3686 (tryckt), 1650-3740 (online)
The fault simulation is an important method in the design of liquid rocket and fault injection is necessary for fault simulation. In this paper, we present a new fault injection method for liquid rocket pressurization and feed system (PFS) without modifying the system structure. Firstly, we develop a physics-based model of a pressurization and feed system based on Modelica, which describes both nominal and faulty behaviors in a unified way. Then, a new fault injection method is discussed, which uses the fault mode library and constructs association between the Modelica model and the fault mode by customized Modelica annotation in MWorks®. Consequently, several typical fault modes such as leakage and clogging are simulated to verify this method. The result shows that this new method could be easily used to simulate various kinds of fault modes in liquid rocket pressurization and feed system and the new fault simulation process indeed plays a role in the system design and could give some reference to ongoing fault detection and diagnoses.
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