An improved on-line dynamic testing method

This paper applies a new developed integration method to solve the momentum equations of motion in performing an on-line dynamic test. This integration method is unconditionally stable and explicit. Thus, the difficulty arising from the presence of high frequency modes can be easily overcome and the on-line dynamic tests can still have an explicit implementation, which is much simpler than for an implicit implementation. Error propagation analysis for this explicit on-line dynamic testing method is performed and the improved characteristics in error propagation are thoroughly verified. In addition, both numerical examples and verification tests are conducted to verify the superiority of this on-line dynamic testing method.