Optimal control of structures under earthquake excitation based on the colonial competitive algorithm

Abstract

The active control of engineering structures is one of the best methods to reduce structural responses under seismic excitation for the best performance of structures. This study presents an effective approach for the optimal control of structures under strong ground motion using the colonial competitive algorithm. The colonial competitive algorithm was developed over the last few years in an attempt to overcome the inherent limitations of traditional optimize method. The colonial competitive algorithm has been applied due to its ideal performance in optimal control problem. The effectiveness and performance of the proposed method have been investigated through two numerical examples for the response control of earthquake-excited structures. The obtained results have been compared with the Linear Quadratic Regulator (LQR) control algorithm, and the performance of the proposed control approach has been found to be better than the LQR controller.

Technical Note: Active and Semi-Active Strategies to Control Building Structures Under Large Earthquake Motion

“…In the study, several control algorithms-including decentralized bang-bang controller, Lyapunov controller, modulated homogeneous friction controller, maximum energy dissipation controller, and clipped-optimal controller-are used for validation purposes; Chae et al [2012] evaluated four different semi-active control algorithms (LQR, SMC, DBB, and PAC) in the controlled seismic response of a 3-storey steel frame building using large-scale MR dampers. Is it worth noting that the performance of control strategies based on new control algorithms is usually compared against LQG and LQR algorithms [Amini and Bagheri, 2012;Bagheri and Amini, 2013;Bitaraf et al, 2012;Ozbulut et al, 2011]. Nevertheless, LQR control algorithms are based on full-state feedback, i.e., including the displacements and velocities.…”

Time domain damage localization and quantification in seismically excited structures using a limited number of sensors

“…Like other optimization methods, the optimum solution is found through an iterative process. Readers can find more information about this optimization algorithm in (Atashpaz-Gargari and Lucas, 2007;Bagheri et al, 2012;Amini and Bagheri, 2014;Bagheri et al, 2014).…”

کنترل بهینه‌ی ارتعاشات سازه‌ها با استفاده از تبدیل موجک و الگوریتم رقابت استعماری

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