Zero Deviation Characterization of Jet Pipe Servo Valve in
ThreeDimensional Centrifugal Environment

doi:10.16183/j.cnki.jsjtu.2017.08.013

Abstract

Abstract: In view of the zero deviation problem of jet pipe servo valve under centrifugal environment, a mathematic model of the zero deviation characterization of the jet pipe servo valve under threedimensional centrifugal environment was built. The factors to zero deviation of the jet pipe servo valve including armature component eccentricity, electromagnetic torque coefficient, feedback rod stiffness and moving part quality were analyzed. The measures for decreasing zero deviation value of the jet pipe servo valve under threedimensional centrifugal environment were put forward. The result shows that the zero deviation value has a linear relation with the centrifugal acceleration value. Armature component eccentricity, electromagnetic torque coefficient and moving part quality are the main affecting factors while feedback rod stiffness has little effect. The centrifugal zero deviation can be 0 at each centrifugal acceleration by adjusting appropriate armature component eccentricity or the ratio of spool quality to armature component quality. The verification experiment was carried out by using some type of the jet pipe servo valve. The theoretical result is in good agreement with the experimental data.

Key words: threedimensional centrifugal environment, jet pipe servo valve, zero deviation characterization, centrifugal acceleration, linear relationship

CLC Number:

YIN Yaobao,WANG Yu. Zero Deviation Characterization of Jet Pipe Servo Valve in
ThreeDimensional Centrifugal Environment[J]. Journal of Shanghai Jiaotong University, 2017, 51(8): 984-991.

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