Research of Detecting System on Aneroid Capsule of Height Control Module of Automatic Unlocking Device

Abstract:

Function detecting method on height control module of automatic unlocking device for parachute are explored, principle scheme and framework of the function detecting system for height control module are developed. Intelligent testing method for displacement of aneroid capsule that is the most important key component in the height control module of automatic unlocking device is put forwarded. Displacement sensor based on differential transformer is adopted to acquire the displacement information of the aneroid capsule. Sensor testing circuit and the signal processing circuit are designed. In order to make the high altitude simulation test of displacement variability of capsule stack, experimental chamber of pressure control and test based on SCM control technique is developed, furthermore, experimental data of pressure and displacement are analyzed and processed. It is shown that accuracy of displacement is lower than 0.05mm, and pressure resolution is controlled within 0.06hPa. The detecting system can be used for reliability test for height control module of Automatic Unlocking Device, and the testing and controlling methods above can be also applied for displacement and pressure measurement of other similar mechanical components.

• Periodical: Applied Mechanics and Materials (Volumes 513-517)
• Pages: 3536-3542
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.513-517.3536
• Online since: February 2014
• Authors: Yu Jun Wang*, Li Jie Wang, Zhen Zhou, Yong Qing, Jin Ying Yin
• Keywords: Aneroid Capsule, Automatic Unlocking Device, Displacement, Pressure, Reliability

References

[1] Guo Kui Rong, Wei Xie Huai. Spacecraft Recovery & Remote Sensing: Integration Evaluation for Parachute Reliability. Vol. 04 (2008), pp.1-2.

[2] Ren Zhanyong. Wang Xin . Wei Lai. Aeronautic Standardization & Quality: Necessity and Feasibility Analysis of Comprehensive Evaluation of Aviation Products Reliability. Vol. 06 (2008), pp.14-16.

[3] Feng Gonghe, Han Dexiang, Chen Peifeng, et al. Optical Instruments: A Microcomputer Automatical Measuring System with Laser Holographic Grating of Deformation for Aviation Sylphon. Vol. 18(5) (1996), pp.1-5.

[4] Ma Hongfa, Zhang Zhenzhou, Wu Hong, et al. Pipeline Technique and Equipment: Elastic Part Characteristic Parameter Reflectoscope Reflector Development. Vol. 4 (2008), pp.29-30.

[5] ZHU Yan. Aviation Precision Manufacturing Technology: Design and Realization of Aviation Instrument Auto-testing System for a Membrane-box. Vol. 47 (2) (2011), pp.26-29.

[6] Jiang Xiuzhen. Basic Combined Training Atlas of Mechanics (Science Press. The third edition, Beijing 2010).

[7] Wang Yuansheng, Lu Guiying, Peng Youxin. Journal of Harbin Institute of Technology: Design and Practice of Automatic Pen-Parachute-device. Vol. 37(04) (2005), pp.571-573.

[8] Li Keyi, Lin Guoxin, Shi Wenbin, et al. Development Review of Automatic Unlocking Device. The 10th National Safety Rescue Academic Communication of Chinese Society of Aeronautics and Astronautics. 2006, pp.72-73.

[9] Wei Qiji, Liu Liansheng. Journal of Aeronautical Materials: Anelastic Study of Beryllium Bronze and Other Several Materials. Vol. 02 (1984), pp.9-17.