1. School of Mechanical Engineering and Car, Beijing Institute of Technology, Beijing 100081, China 2. Department of Automobile Engineering, Academy of Military Transportation, Tianjin 300161, China 3. Weapons Institute of Science and Technology of China, Beijing 100089，China
Abstract：Spectrometric oil analysis is an important method to study the running state of power-shift steering transmission (PSST). An evaluation model of PSST health state was developed on the basis of the theories of principal component analysis (PCA) and analytic hierarchy process (AHP) using spectrometric oil analysis data. Considering the concept of mechanical equipment and wear elements in spectrometric oil analysis data, the health value was employed to quantitatively describe the running state degree of PSST, and the grades of health state were classified based on the health values. The oil analysis data were studied during the process of choosing principal components. The weight vectors of principal components were obtained by using the AHP method. In the course, the conformation of judgement matrix and the consistency check were also studied. The evaluation model was developed by combining the PCA and AHP methods. This model has been proved to have better accuracy in evaluating the running state of PSST. This work is important for developing state evaluation of PSST.
Key words：Spectral analysis;PCA-AHP methodology;Power-shift steering transmission(PSST);Health state
[1] WEI Hai-jun，SUN Pei-ting，YIN Feng(魏海军，孙培廷, 尹 峰). Transactions of CSICE(内燃机学报), 2005, 23(1): 88. [2] LI Zhu-guo, WEI Shi-ming, YU Wu-quan(李柱国，尉世明，俞五全). Chinese Internal Combustion Engine Engineering(内燃机工程)，2001, 22(1): 66. [3] WANG Yuan-yuan, CHEN Yun-hao, LI Jing(王圆圆，陈云浩，李 京). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2009，29(3)：735. [4] MA Hong-wen, MA Biao(马洪文，马 彪). Journal of Mechanical Strength(机械强度), 2002, 24(4): 489. [5] Yan R Q, Gao, Robert X. Transaction of the ASME, J. Vibr. Acoust., 2008, 130(2): 12. [6] GU Yu-jiong, DONG Yu-liang, YANG Kun(顾煜炯，董玉亮，杨 昆). Proceedings of the CSEE(中国机械工程学报), 2004, 24(6): 189. [7] ZHENG Chang-song, MA Biao, MA Yuan(郑长松，马 彪，马 源). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2009，29(3)：749. [8] ZHENG Chang-song, MA Biao, WAN Yao-qing(郑长松, 马 彪, 万耀青). China Machanical Engineering(中国机械工程), 2006, 17(9): 975. [9] CHEN Shi-wei, LI Zhu-guo, XU Qi-sheng(陈士玮, 李柱国，徐启圣). Chinese Internal Combustion Engine Engineering(内燃机工程)，2006, 27(1): 63. [10] XU Ming-xin(徐明新). Journal of Tongji University(同济大学学报), 2001, 29(12): 1429. [11] FU Zhong-guang, WANG Li-ping, GE Zhi-hua(付忠广，王丽平，戈志华). Journal of Power Engineering(动力工程), 2008, 28(4): 548. [12] LIU Bao-ying, YANG Ren-gang(刘宝英，杨仁刚). Electric Power Automation Equipment(电力自动化设备), 2008, 28(11): 13. [13] Nagahanumaiah Ravi B, Mukherjee N P. International Journal of Production Research, 2007, 45(5): 1161. [14] GU Ying-kui, WU Lu-heng(古莹奎，吴陆恒). China Mechanical Engineering(中国机械工程), 2007, 18(9): 1052. [15] QIN Shou-kang(秦寿康). Principle and Application of Comprehensive Evaluation(综合评价原理与应用). Beijing: Publishing House of Electronics Industry(北京：电子工业出版社), 2003. [16] Lü Zhi-yong, YAN Xin-ping, PENG Ya-fang, et al(吕植勇，严新平，彭雅芳，等). Tribology(摩擦学学报), 2008, 28(5): 453.
