On the optimal sensor placement techniques for a bridge structure

The results showed that the effective independence driving-point residue (EFI-DPR) method provides an effective method for optimal sensor placement to identify the vibration characteristics of the studied bridge. The variance method (VM) developed by the authors gave results very close to the EFI-DPR technique, in terms of the capability to capture the vibration mode shape and signal strength. However, the VM presented unique characteristics in the world of the OSP techniques, which is the indication of the optimal number of sensors (ONS).