Active tuned mass damper based vibration control for seismic excited adjacent buildings under actuator saturation. Issue 135 (August 2020)

• Record Type: Journal Article
• Authors: Xu, Lanlan; Cui, Yanliang; Wang, Zhenglu
• Is Part Of: Soil dynamics and earthquake engineering. Issue 135(2020)
• Publication Date: 2020-08
• Subjects: Active tuned mass damper -- Active vibration control -- Adjacent buildings -- Actuator saturation -- Convergence rate; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2020.106181
• Languages: English
• ISSNs: 0267-7261

Abstract

Abstract: This paper investigates the active tuned mass damper (ATMD) based active vibration control (AVC) for seismic excited adjacent buildings with actuator saturation. The ATMDs are installed at the top floors and oscillate under the control forces for mitigating the vibration responses. Considering the actuator saturation, an observer-based AVC law is proposed. By the proposed method, the bounded stability of the overall buildings can be achieved, meanwhile, the actuation saturation is guaranteed. The proposed method introduces less off-line computation burden, moreover, it provides a convenient method in regulating the actuator saturations and specifying the sensor locations. For adjacent buildings which are consisted by 10- and 6-storey buildings, the numerical validation reveals that only four sensors are necessary, and by a maximal actuator saturation of 779 kilo-Newton, over 30% vibration response of the taller building can be reduced. When the actuator saturation is amplified to 1000 kilo-Newton, over 50% vibration responses of the two adjacent buildings can be mitigated. Highlights: An ATMD-based active vibration control is proposed to mitigate the vibration of seismic excited adjacent buildings with actuator saturation. Numerical example reveals that only the vibration responses of the ATMDs are necessary to be measured. Under the 1940 El Centro earthquake, with a maximal actuator saturation of 779(kN), over 30% of displacement response of the taller building can be effectively reduced. If the actuator saturation is amplified to 1k(kN), over 51% of displacement responses of the two buildings can be simultaneously mitigated. Under the 2011 Fukushima earthquake, over 52% displacement responses of the two buildings can be mitigated.