Research on Optimal Sensor Placement Using Effective Two-Step Arrangement Approach
Optimal sensor placement method is very important in structural vibration test. This paper proposes an effective two-step arrangement method for sensors optimization, which is suitable for on-line monitoring scheme. In the first step, we calculate the utmost distance of sensors on a special structure by principle of elastic wave propagation and determine the preliminary number of sensors; in the second step, optimized sensors placement is ultimately determined by Effective Independence Driving-Point Residue (EI-DPR) method which uses the utmost distance above mentioned as a constrained condition. This methodology concentrates the sensor positions in the high energy content regions resulting in the sensors being quasi-uniformly spaced and symmetrically deployed. This paper also compares our new EI-DPR method of sensor placement with the two traditional methods under three different modal criteria. Finally we verify the twostep arrangement approach on an intelligent space truss as a numerical case. The results successfully demonstrated that the proposed method (EI-DPR) is an optimal method better than the other two traditional ones.
Optimal sensor placement elastic wave propagation Modal assurance criterion Independence driving point residue
Ziyan WU Haifeng YANG Yunju YAN
School of Mechanics, Civil and Architecture Northwestern Polytechnical University Xian 710072, China
国际会议
长沙
英文
1410-1413
2009-10-10（万方平台首次上网日期，不代表论文的发表时间）