Influence of magnetic reluctances of magnetic elements on servo valve torque motors
作者： Changhai Liu , Hongzhou Jiang
DOI: 10.3901/CJME.2015.1204.142
关键词:
摘要: The current research of electro-hydraulic servo valves mainly focuses on the vibration, pressure oscillating and source noise. Unfortunately, literatures relating to study influence magnetic reluctances elements are rarely available. This paper aims analyze torque motor. Considering these ignored in previous literatures, a new mathematical model valve motor is developed proposed based fundamental laws electromagnetism. By using this models, electromagnetic constant spring stiffness evaluated for given set parameters. A computer simulation by AMESim software also performed same parameters verify model. theoretical results render closer agreement with than those models. In addition, an experimental measurement flux densities air-gaps carried out SFL218 Compared show better data. shows motor, offers modified analytical expressions stiffness. These could provide guidance more accurately linear control design approach sensitivity analysis expressions.
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