Application Research of Contactless Solenoid Valve Detection Technology Based on Magnetic Flux Leakage Theory
Zhang Zi-jian;Wang Di;Gong Bo;Jia Rui;Yang Xiu-shan;Beijing Institute of Astronautical Systems Engineering;China Academy of Launch Vehicle Technology Logistics Center;
Solenoid valve is an important controller unit and it is used widely in serious of aerospace crafts. According to the characters of valve element and the present research results of solenoid valve detection technology, this paper proposes a method of contactless solenoid valve detection based on the theory of magnetic flux leakage. The purpose of the method is to test the polarity of solenoid valve and a polarity detector system is designed. It analyzes the application of the detection system and verifies the feasibility and accuracy of magnetic flux leakage detection technology applied on the polarity testing on aerospace craft. The result indicate: Contactless detection technology based on magnetic flux leakage theory apply on solenoid valve working test, compared with control command, the test result is accurate and credible.