北京航空航天大学学报 ›› 2016, Vol. 42 ›› Issue (1): 87-93.doi: 10.13700/j.bh.1001-5965.2015.0020

• 论文 • 上一篇    下一篇

气动式座舱压力调节系统稳定性的分析与优化

郑新华1,2, 谢利理1, 任军学3   

  1. 1. 西北工业大学自动化学院, 西安 710129;
    2. 郑州轻工业学院电气信息工程学院, 郑州 450002;
    3. 北京航空航天大学航空科学与工程学院, 北京 100083
  • 收稿日期:2015-01-08 出版日期:2016-01-20 发布日期:2016-01-28
  • 通讯作者: 谢利理,Tel.:029-88491623E-mail:xielili@nwpu.edu.cn E-mail:xielili@nwpu.edu.cn
  • 作者简介:郑新华女,博士研究生。主要研究方向:气动式座舱压力调节系统的研究与设计。Tel.:029-88491623E-mail:parisz@163.com;谢利理男,博士,教授,博士生导师。主要研究方向:航空电气与作动系统的控制与实时仿真,座舱压力调节系统的设计与仿真。Tel.:029-88491623E-mail:xielili@nwpu.edu.cn;任军学男,博士。主要研究方向:航空发动机及空间电推进。E-mail:rjx_buaa@sina.com
  • 基金资助:
    航空科学基金(20100653006)

Stability analysis and optimization for pneumatic cabin pressure regulating system

ZHENG Xinhua1,2, XIE Lili1, REN Junxue3   

  1. 1. School of Automation, Northwestern Polytechnical University, Xi'an 710129, China;
    2. School of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China;
    3. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2015-01-08 Online:2016-01-20 Published:2016-01-28
  • Supported by:
    Aeronautical Science Foundation of China(20100653006)

摘要: 为了解决气动式座舱压力调节系统装配飞机时出现的座舱压力波动现象,分析了座舱压力控制系统的组成,根据余压段实际参与压力调制的组件,对控制系统进行了简化,以此为例分析系统的稳定性。首先对系统中的非线性环节进行了详细分析,得到其描述函数和负导描述函数曲线。比较了小孔-气容结构在常压、小幅充放气条件下的过渡过程,发现在该使用条件下的充放气时间基本相等,据此将小孔-气容结构的传递函数建模为一阶环节,指出了二者的相同及不同之处。使用描述函数的方法对系统的稳定性进行判断,提出了实现稳定的可行性方法。全物理仿真结果表明,使用该方法可使座舱压力调节系统的性能达到规范所要求的指标。

关键词: 飞机座舱, 压力调节, 气动式, 稳定性, 优化, 描述函数

Abstract: Pressure oscillation arises in cabin of aircraft equipped with the considered pressure regulating system. To solve the problem, the scheme of cabin pressure regulating system was introduced and analyzed. The system in differential pressure flight phase is simplified according to actual components participating in the pressure modulating. The simplified system was taken as an example for stability analysis. The nonlinearity of the system was analyzed in details. The describing function was obtained and the negative inverse describing function curve was plotted. The charging and discharging dynamic of hole-container structure was studied, and it was found that the charging and discharging transient was almost same in the condition. Then the transfer function of hole-container structure was built as first-order element, and the similarities and differences between them were pointed out. Describing function method was employed to analyze stability of the system, and a way of achieving stability was proposed. Full-physical simulation result shows that the required stability is achieved by this way.

Key words: aircraft cabin, pressure regulating, pneumatic, stability, optimization, describing function

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