INFLUENCE OF TIME-DELAY ON ACTIVE CONTROL FOR BRIDGE AND TIME-DELAY COMPENSATION

Qi Xingjun; Rong Mianshui; Song Guofu

doi:10.13204/j.gyjz200802015

Volume 38 Issue 2

Dec. 2014

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Qi Xingjun, Rong Mianshui, Song Guofu. INFLUENCE OF TIME-DELAY ON ACTIVE CONTROL FOR BRIDGE AND TIME-DELAY COMPENSATION[J]. INDUSTRIAL CONSTRUCTION, 2008, 38(2): 49-52. doi: 10.13204/j.gyjz200802015

Citation:

Qi Xingjun, Rong Mianshui, Song Guofu. INFLUENCE OF TIME-DELAY ON ACTIVE CONTROL FOR BRIDGE AND TIME-DELAY COMPENSATION[J]. INDUSTRIAL CONSTRUCTION, 2008, 38(2): 49-52. doi: 10.13204/j.gyjz200802015

Qi Xingjun, Rong Mianshui, Song Guofu. INFLUENCE OF TIME-DELAY ON ACTIVE CONTROL FOR BRIDGE AND TIME-DELAY COMPENSATION[J]. INDUSTRIAL CONSTRUCTION, 2008, 38(2): 49-52. doi: 10.13204/j.gyjz200802015

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INFLUENCE OF TIME-DELAY ON ACTIVE CONTROL FOR BRIDGE AND TIME-DELAY COMPENSATION

doi: 10.13204/j.gyjz200802015

1.
1. School of Civil Engineering,Shandong Jianzhu University,Jinan 250101;
2.
2. Institute of Crustal Dynamics,China Earthquake Administration,Beijing 100085;
3.
3. Shandong Keda Engineering Design and Consultation Corporation Limited,Jinan 250101

Received Date: 2007-08-27
Publish Date: 2008-02-20

Abstract

Abstract

There are some time-delay factors in the systems of active control for bridge.In order to explore the influence laws of time-delay on active control effect for bridge and time-delay compensation method, the bridge finite element model and the seismic mitigation control equation are set.With different lag time of control system, the active control seismic response calculation and analysis for a long-span continuous beam bridge are performed.The results indicate that time-delay can make the vibration-suppressed effectiveness of bridge active control systems worse with lag time longer.It can even make the seismic responses instable.Phase compensation for time-delay of bridge active control can get good control effect.The vibration-suppressed effectiveness of most seismic responses for the bridge with time-delay compensation can be close to the vibration-suppressed effectiveness without time-delay, and some can even exceed the vibration-suppressed effectiveness without time-delay.
- active control,
- time-delay,
- phase compensation,
- vibration-suppressed effectiveness,
- continuous beam bridge