Active tendon control of suspension bridges

作者：Preumont Andre^*; Voltan Matteo; Sangiovanni Andrea; Mokrani Bilal; Alaluf David

来源：Smart Structures and Systems, 2016, 18(1): 31-52.

DOI：10.12989/sss.2016.18.1.031

• suspension bridge
• active control
• collocated control
• integral force feedback

The paper first reviews the theory of active tendon control with decentralized Integral Force Feedback (IFF) and collocated displacement actuator and force sensor; a formal proof of the formula giving the maximum achievable damping is provided for the first time. Next, the potential of the control strategy for the control of suspension bridges with active stay cables is evaluated on a numerical model of an existing footbridge; several configurations are investigated where the active cables connect the pylon to the deck or the deck to the catenary. The analysis confirms that it is possible to provide a set of targeted modes with a considerable amount of damping, reaching xi = 15%. Finally, the control strategy is demonstrated experimentally on a laboratory mock-up equipped with four control stay cables equipped with piezoelectric actuators. The experimental results confirm the excellent performance and robustness of the control system and the very good agreement with the predictions.

• 出版日期2016-7