Journal of South China University of Technology (Natural Science Edition) ›› 2019, Vol. 47 ›› Issue (12): 17-24.doi: 10.12141/j.issn.1000-565X.180128

• Mechanical Engineering • Previous Articles     Next Articles

Analysis on the Influence Factors of Pneumatic Servo-Mechanism's Characteristics

YIN Yaobao1 LIANG Junzhe1 YUAN Jiayang1 CAO Jing2   

  1. 1． School of Mechanical and Energy Engineering，Tongji University，Shanghai 201804，China; 2． Nanjing Mechanical and Electrical Hydraulic Engineering Ｒesearch Center，Nanjing 211106，Jiangsu，China
  • Received:2018-03-21 Revised:2019-05-25 Online:2019-12-25 Published:2019-11-02
  • Contact: 訚耀保(1965-)，男，教授，主要从事极限环境下的流体控制、液压、气动基础理论，飞行器能源、舵机与伺服机构，高速气动控制研究． E-mail:y-yin@tongji.edu.cn
  • About author:訚耀保(1965-)，男，教授，主要从事极限环境下的流体控制、液压、气动基础理论，飞行器能源、舵机与伺服机构，高速气动控制研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China( 51775383，51475332) and Shanghai Aerospace Science and Technology Innovation Foundation( SAST2017093)

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Abstract: The principle of the pneumatic servo that composed of pressure reducing valve，solenoid valve，single- flapper valve，single acting cylinder was analyzed，and its mathematical modeling was also built． The influence fac- tors of pneumatic servo-mechanism were analyzed based on the different altitude． The results show that the air sup- ply temperature，ambient temperature and air supply pressure have small influence on the characteristics of the ser- vo-mechanism． When altitude rises，the back pressure of the pneumatic system decreases，resulting in a significant change in the working point of the servo-mechanism．

Key words: pneumatic servo, numerical simulation, mechanism characteristics, influence factors

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