Liner quadratic optimal control in active control of structural vibration systems

Jiang, Bo Yu; Wei, Xinjiang; Guo, Yiping

doi:10.1109/ccdc.2010.5498552

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…Among optimal control strategies, the linear quadratic regulator (LQR) and linear quadratic Gaussian (LQG) techniques are the most frequently discussed ones. The latest approaches include LQR controllers that use genetic algorithms for an optimization of the weighting matrix (Jiang et al, 2010). Other types of state space controllers have been employed, such as the delayed state feedback controller (Wang and Hu, 2006).…”

Section: Introductionmentioning

confidence: 99%

A fractional order controller for seismic mitigation of structures equipped with viscoelastic mass dampers

Muresan

Dulf

Prodan

2014

Journal of Vibration and Control

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In this paper a fractional order (FO) controller is proposed for solving the vibration suppression problem in civil structures. A laboratory scaled steel structure, with one floor, modeled as a single degree-of-freedom system is used as a case study. Two passive control solutions are proposed: a tuned mass damper (TMD) and a viscoelastic damper (VED), the latter being modeled using fractional derivatives. The simulation results show that the VED is able to further reduce the vibrations induced as forced oscillations or due to seismic excitation inputs, as compared to the passive TMD. The FO controller is then tuned using a new approach based on imposing a magnitude condition for the closed-loop system at the structural resonance frequency. The resulting FO active control strategy, together with the VED, ensures an increased seismic mitigation. Structural modeling errors are also considered, with the proposed active FO control strategy behaving robustly in terms of vibration suppression. The novelty of the paper resides in the tuning approach, as well as in the proposed active control strategy that is based upon combing VEDs, described using an FO model, and an FO controller.

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Section: Introductionmentioning

confidence: 99%

A fractional order controller for seismic mitigation of structures equipped with viscoelastic mass dampers

Muresan

Dulf

Prodan

2014

Journal of Vibration and Control

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“…Engineers and researchers have successfully integrated all these methodologies into the control systems employed in civil structures (Soong, 1988). The linear quadratic regulator (LQR) controller has been extensively used by many researchers such as Chang and Soong (1980), Guclu and Yazici (2008), Jiang et al (2010), and Kim et al (2013). A Linear Quadratic Gaussian (H 2 /LQG) controller has been implemented to a structure equipped with active devices (Asai, 2014; Bitaraf, 2011; Dyke and Spencer, 1996; Ohtori et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Vibration control by active integrated control system under bidirectional ground motions

Akyürek

Suksawang

2020

Advances in Structural Engineering

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To improve the safety and security of the structures with irregular plan configuration, the new torsionally effective passive control system (ICS) was first proposed by the author, which utilizes a new design configuration to dissipate the unwanted energy from the structures in the lateral and torsional directions. In this research, a new active structural control approach, which is the active form of the ICS (or active integrated control system, AICS), is introduced as an alternative active control system, especially for the buildings with torsional sensitivity. In the design of active system configurations, two actuators driven by the linear quadratic regulator (LQR) are implemented and used to apply the optimum control forces to the ATMDs and AICS. For examining the performance of the proposed system configuration, the ﬁnal design is applied to the 9-story Benchmark steel structure subjected to bidirectional three historical earthquakes. The obtained results show the overall performance of structural performance by using the AICS is substantially improved as compared to conventional ones (ATMDs) under selected ground accelerations with a 3% to 6% improvement in the lateral directions and by nearly 20% in the torsional direction in terms of the peak and root mean square response reduction.

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Optimization‐based design of sliding sector control for active seismic protection of structures

Saadatfar,

Emami,

Khatibinia

et al. 2023

Structural Design Tall Build

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SummaryThe active tuned mass damper (ATMD) is a reliable energy‐dissipating device to effectively protect structures from serious damages due to earthquake excitations. This study proposes the optimal design of sliding sector control (SSC) for the seismic protection of an 11‐story shear building structure equipped with ATMD. First, the SSC controller is optimally designed for the seismic control of the structure subjected to an artificial earthquake. Then, the effectiveness of the optimized SSC (OSSC) is assessed in reducing the seismic responses of the structure subjected to four near‐ and far‐fault earthquake excitations. The efficient performance of the OSSC technique is also validated and compared with that of a number of the control techniques such as linear quadratic regulator (LQR), fuzzy logic control (FLC), proportional‐integral‐derivative (PID), and optimal sliding mode control (OSMC). Comparative results demonstrate the efficiency and robustness of the proposed OSSC in comparison with those of the other controllers.

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Liner quadratic optimal control in active control of structural vibration systems

Cited by 7 publications

References 7 publications

A fractional order controller for seismic mitigation of structures equipped with viscoelastic mass dampers

A fractional order controller for seismic mitigation of structures equipped with viscoelastic mass dampers

Vibration control by active integrated control system under bidirectional ground motions

Optimization‐based design of sliding sector control for active seismic protection of structures

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