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Improvement in thrust force estimation of solenoid valve considering minor hysteresis loop

Title
Improvement in thrust force estimation of solenoid valve considering minor hysteresis loop
Author
홍정표
Keywords
MAGNETIC-PROPERTIES; TORQUE
Issue Date
2017-06
Publisher
AMER INST PHYSICS
Citation
AIP ADVANCES, v. 7, no. 5, Article no. 056607
Abstract
Solenoid valve is a very important hydraulic actuator for an automatic transmission in terms of shift quality. The same form of pressure for the clutch and the input current are required for an ideal control. However, the gap between a pressure and a current can occur which brings a delay in a transmission and a decrease in quality. This problem is caused by hysteresis phenomenon. As the ascending or descending magnetic field is applied to the solenoid, different thrust forces are generated. This paper suggests the calculation method of the thrust force considering the hysteresis phenomenon and consequently the accurate force can be obtained. Such hysteresis occurs in ferromagnetic materials, however the hysteresis phenomenon includes a minor hysteresis loop which begins with an initial magnetization curve and is generated by DC biased field density. As the core of the solenoid is ferromagnetic material, an accurate thrust force is obtained by applying the minor hysteresis loop compared to the force calculated by considering only the initial magnetization curve. An analytical background and the detailed explanation of measuring the minor hysteresis loop are presented. Furthermore experimental results and finite element analysis results are compared for the verification. (C) 2016 Author(s).
URI
https://aip.scitation.org/doi/10.1063/1.4973388https://repository.hanyang.ac.kr/handle/20.500.11754/114586
ISSN
2158-3226
DOI
10.1063/1.4973388
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > AUTOMOTIVE ENGINEERING(미래자동차공학과) > Articles
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