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Sinusoidal reference strategy for adaptive feedforward vibration control: numerical simulation and experimental study
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DOI：10.1016/S0022-460X(02)01600-0.png)
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A new control approach named Sinusoidal Reference Strategy is developed for adaptive feedforward structural control. In this approach, the recursive-least-squares algorithm is used and a higher frequency sinusoidal signal is utilized as the reference signal. The present approach is able to overcome some of the shortcomings of the conventional adaptive feedforward control. Numerical simulations are then conducted on reducing wind-induced vibrations of the JIN MAO Building in Shanghai, China, with a height of 420 in. A multiple-degree-of-freedom (m.d.o.f.) aeroelastic model of a general super-tall building and an active mass damper (AMD) actuator are designed and manufactured. Wind tunnel tests are carried out to investigate further the control efficiency and robustness of the present approach. Both the simulation and experimental results show that the approach can reduce vibration of super-tall buildings remarkably, and can adapt to dynamic uncertainties and modelling errors of the buildings. (C) 2003 Elsevier Science Ltd. All rights reserved.
Keyword:
WIND-EXCITED BUILDINGS
ACTIVE CONTROL
NOISE
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4.9
论文数:
1.7W
被引数:
4.8W
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