A New Optimization Approach to Enhance Seismic Performance of Lead Rubber Bearing-Isolated Steel Moment-Resisting Frames Under Extreme Events

Panda, Jagajyoti; Chaudhuri, Shaon Ray

doi:10.18520/cs/v122/i1/77-86

Cited by 10 publications

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“…The real-life implementation of intelligent control systems has been widely explored by the researchers, with the prime objective to control the vibrations of building structures under strong seismic events. Previously, Chung et al [1]; Elias and Matsagar [2]; Panda and Ray-Chaudhuri [3] have discussed an optimal strategy for tuned mass dampers (TMDs) with linear and nonlinear viscous damping to directly estimate its optimal parameters. The efficacy of the proposed strategy was numerically validated for a TMD that is installed in Taipei 101 tower to alleviate the wind induced vibrations.…”

Section: Introductionmentioning

confidence: 99%

Decentralized H2-Based Semi-Active Control To Suppress Transient Vibration Of Structures

Panda,

Adarsh,

Chakraborty

2024

J. Phys.: Conf. Ser.

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This study presents a novel decentralized active control algorithm for vibration mitigation of structures subjected to random seismic excitations. In recent years, the applicability of decentralization technique has gained momentum in the field of control theory to overcome the complexity and computational burden of centralized system. Advancement in instrumentation scheme, i.e., sensors, actuators and computing units in the feedback loop is the reason behind the growing interest of decentralized control concept. In this case, the controller framework is designed through suboptimal H2-based proportional control algorithm. The objective of this optimal strategy is to reduce structural energy and control force simultaneously. Further, the concept of decentralized switched state-feedback control law is incorporated, and the detailed formulations are presented in digital domain for easy implementation. A set of communication channels are considered to exchange the state information between the neighbouring subcontrollers. The performance of the designed control strategy is numerically illustrated for an 8-storey building model with multiple magneto-rheological dampers. Comparative assessment with passive case and standard centralized scheme confirms better adaptiveness of the proposed control scheme.

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Section: Introductionmentioning

confidence: 99%