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�������պ����ѧѧ�� 2005, Vol. 31 Issue (05) :548-551    DOI:
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Grey relational analysis of fuzzy comprehesive evaluation of air quality in manned spacecraft
Pang Liping, Wang Jun*
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The habitation module in manned spacecraft is a closed-chamber, and its air quality is increasingly attached importance along with longer time missions because it greatly influences the health of crew. It is necessary to put forward a new evaluation method of air quality. Based on the grading fuzzy membership functions of the trace contaminant being bought forward, a grey relational analysis of fuzzy comprehesive evaluation was adopted to assess the air quality in manned spacecraft. In addition, the membership functions of fuzzy grade of some important trace contaminants were firstly proposed. This assessment method merges the merits of the fuzzy evaluation and the grey one. It less depends on distributing rule and can analyze the trend of development. It can present fuzzy comprehensive evaluation matrix and grey relational grade at the same time, therefore reflect well air quality status and trend in development. The analysis shows it can more reasonably reflect actual air quality in manned spacecraft, and be used to assess the working performance of the trace contaminant control system.
Keywords�� manned spacecraft   air quality   fuzzy comprehensive evaluation   degree of gray relationship     
Received 2003-12-22;
About author: ����Ƽ(1973-),Ů,������������,��ʿ��, plpbuaa@163.com.
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����Ƽ, ����.���˺�������������ģ���ۺ����ۻҹ�������[J]  �������պ����ѧѧ��, 2005,V31(05): 548-551
Pang Liping, Wang Jun.Grey relational analysis of fuzzy comprehesive evaluation of air quality in manned spacecraft[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(05): 548-551
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2005/V31/I05/548
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