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Hysteresis characteristic modeling and simulation of mechanical centrifugal speed sensitive element
Published:2015-12-10 author:BAI Xiao1, YUN Chao2, BAI Jing hua3 Browse: 4527 Check PDF documents

 Hysteresis characteristic modeling and simulation of 

mechanical centrifugal speed sensitive element
BAI Xiao1, YUN Chao2, BAI Jing hua3
(1. Haidu College Qingdao Agricultural University, Laiyang 265200, China; 2. Robotics Institute, Beihang University,
Beijing 100191, China; 3. Senate Branch, The Chinese People′s Liberation Army in 91206 Military, Qingdao 266108, China)
Abstract: Aiming at the hysteresis of the mechanical centrifugal speed sensitive element, the influencing factors to the element hysteresis and the controlling method which can reduce hysteresis were investigated, and firstly, the working principle of the mechanical centrifugal speed sensitive element was expounded and the mathematical model of aero engine centrifugal speed sensor element was established, and the simulation model was developed based on AMESim. The effect of valve friction force and adjusting spring stiffness difference on the model′s hysteresis characteristic were computed to make comparisons. Finally, test was carried out through choosing valves of different manufactured condition and springs of different hysteresis characteristic. The results indicate that valve friction force and adjusting spring stiffness are important factors that influence the element hysteresis, and the element′s hysteresis characteristic requirement can be met by finishing the sharp edge of accusing oil hole and reducing adjusting spring stiffness.
Key words: mechanical centrifugal speed sensitive element; centrifugal flyweight; alignment spring; hysteresis characteristic; AMESim; mathematical model
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