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A STUDY OF IMPULSIVE LOAD IDENTIFICATION IN TIME DOMAIN BASED ON PRECISE TIME-INTEGRATION METHOD |
Wang Jing1、2,Chen Hai Bo1, Wang Jing3 |
1. Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027;2. Department of Basic Courses,Army Officer Academy of PLA,Hefei 230031;3. Beijing electromechanical engineering institute, Beijing 100074 |
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Abstract A new impulsive load identification method in time domain is proposed in this paper in which the dynamic loads are assumed to be linear functions within a time-step and the precise time-integration method is used. In this new algorithm, a precise load identification model is constructed which is not based on the recursion— chain computational format, so the problems of being sensitive to the initial values and the error cumulating are well solved. Furthermore, the TSVD regularization technique is used to overcome the influences of ill-conditioned matrix and measuring noise. Nu-merical example shows the effectiveness of the proposed algorithm.
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Received: 31 May 2012
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