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Monday, August 30, 2021 | History

3 edition of Semi-active control algorithms for structures with variable dampers found in the catalog.

Semi-active control algorithms for structures with variable dampers

Semi-active control algorithms for structures with variable dampers

  • 24 Want to read
  • 15 Currently reading

Published by U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology in Gaithersburg, MD .
Written in English

    Subjects:
  • Structural control (Engineering) -- Mathematical models.,
  • Seismic waves -- Damping -- Mathematical models.

  • Edition Notes

    StatementFahim Sadek and Bijan Mohraz.
    ContributionsMohraz, Bijan., National Institute of Standards and Technology (U.S.)
    The Physical Object
    FormatMicroform
    Paginationxi, 29 p.
    Number of Pages29
    ID Numbers
    Open LibraryOL18116629M

      In practice, semi-active suspensions provide better tradeoffs between performances and costs than passive or active damping. Many different semi-active control .   This paper attempts to reduce the seismic hazards of building structure with an intelligent material called piezoelectric ceramics (PC). Specifically, the author .   [12] Y.-J. Cha and A. K. Agrawal, "Velocity based semi-active turbo-Lyapunov control algorithms for seismically excited nonlinear smart structures," Structural .


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Semi-active control algorithms for structures with variable dampers Download PDF EPUB FB2

Semi-active control algorithms for structures with variable dampers (u. ) national inst. of standards and technology (bfrl) gaithersburg, md oct 97 u. They include: (1) Active variable stiffness, where the stiffness of the structure is adjusted to establish a nonresonant condition between the structure and Cited by: SEMIACTIVE CONTROL ALGORITHMS FOR STRUCTURES WITH VARIABLE DAMPERS.

Semiactive control systems combine the features of active and passive control to reduce. Abstract. Semi-active coupling control of a building complex, which consists of a main building and a podium structure, using variable friction dampers is Cited by: In the current decade, semi-active control of structures against earthquake achieved by variable damping (especially by devices such as dampers containing.

A brief and succinct overview of control fundamentals (PID, adaptive and robust control) is firstly provided, then robust control algorithms will be analysed.

Semi-active control of structures. The shortcoming of an active control system is its requirement for a considerable power source. A semi-active control Cited by: The structure of the book follows a classical path of control-system design; it discusses the actuator or the variable-damping shock absorber, models and.

the force of a viscous damper by controlling its ori_ce area 4[ The appeal of semi!active control is that performance levels rivalling fully active control can. This paper presents the results of a study to evaluate the performance of a number of recently proposed semiactive control algorithms for use with multiple Cited by: The time-invariant active control algorithm relies on the rapid and low-power response capability available from magnetorheological (MR) fluid dampers, which.

In the last years, much work has been done on the theoretical development of control algorithms, but the implementation of the semi-active control strategy to Estimated Reading Time: 5 mins.

Control polices with semi-active and active devices such as magnetorheological (MR) damper, magnetorheological isolator, magnetorheological mount. A semi-active control strategy is developed to suppress vibration of flexible structures by on-line varying the characteristics of variable dampers.

This novel Cited by: 8. Discusses a methodology of semi-active structural control using a variable friction damper. In the presented algorithm only the slipping level of the friction. Semi-Active Control of Structures Using a Neuro-Inverse Model of MR Dampers A. Khaje-Karamodin1, based on the same nominal controller as used in the NIMR Cited by:   The structure of the book follows a classical path of control-system design; it discusses the actuator or the variable-damping shock absorber, models and Appendix A Control Method Comparisons:   The present study investigates the performance of fixed parameter control algorithms on wind-excited high-rise structures equipped with semi-active tuned mass Cited by:   Summary Much research has been conducted on structural control systems to improve the seismic performance of structures under earthquakes and, Improved.

The implementation of variable friction dampers for vibration mitigation of seismic structures generally requires an efficient semi-active control law. In this Cited by:   Semi-active control of buildings and structures with magnetorheological (MR) dampers for earthquake hazard mitigation represents a relatively new research by:   In general, these techniques provide enhanced control performance when compared to traditional passive techniques and lower energy consumption if compared to active.

The structure of the book follows a classical path of control-system design; it discusses the actuator or the variable-damping shock absorber, models and Price:   A semiactive control method for a seismically excited nonlinear benchmark building equipped with a magnetorheological (MR) damper is presented and evaluated.

A Cited by: Inaudi Hayen [1] proposed a simple control logic for a semi-active control system (Figure 1). The semi-active device, which can be considered an extension of a. This paper investigates the effectiveness of the MR damperbased control systems for seismic protection of baseisolated building structures employing some Cited by: Numerous semi-active control algorithms for friction-type variable dampers have been proposed in literature, such as, bang-bang control (Kannan et al.

To date, various types of semi-active devices have been invented, such as MR dampers (Ying et al. ), variable friction dampers (Chen and ChenKori and. structures []. The MR damper is a smart semi-active control device that generates force in response to velocity and applied voltage.

Consequently. In this study, a new semiactive control algorithm with minimum control parameters is developed to drive the hydraulic damper for effective control of the.

built novel double semi-active damper against a conventional semi-active single damper. Different performance metrics were analyzed, and the performance of the Author: Anish Gorantiwar, Rajvardhan Nalawade, Arash Nouri, Saied Taheri.

Magneto- Rheological (MR) damper is a new generation of dampers, filled up with a MR fluid. This fluid, when exposed to a magnetic field, will transform regularly Cited by: 2. Active tuned mass damper (ATMD) have been explored widely for applications in damping response control of bridges under construction.

This paper presents a new Cited by: 1. Hybrid variable structure- fuzzy control of a magnetorheol ogical damper A series of tests was conducted to measur e the response of the damper under Estimated Reading Time: 6 mins. Active Tendon 4 Semi-active Control Magnetorheological Fluid Damper Semi-active TMD Semi-active Base Isolation Other Semi-active.

This paper presents a state-of-the-art review of recent articles published on active, passive, semi-active and hybrid vibration control systems for structures Cited by:   Magnetorheological Fluid Damper Semi-active TMD Semi-active Base Isolation Other Semi-active Dampers 5 Current Trends in Optimization of.

For implementation of structural control algorithms passive, semi-active and active devices are used. Passive devices use the energy of structural motion to.

Semi-Active Vibration Control of Adaptive Structures Using Magnetorheological Dampers. Wavelet Network for Semi-Active Control. Journal of Engineering Cited by:   Pnevmatikos NG, Gantes JC (b) Design and control algorithm for structures equipped with active variable stiffness devices.

J Struct Control Health Monit. Iemura H, Igarashi A, Nakata N. Semi-active optimal control test of full-scale structural steel frames with the variable joint damper system.

Proceedings of the. The structure of the book follows a classical path of control-system design; it discusses the actuator or the variable-damping shock absorber, models and .The effectiveness of the semi-active control strategies using fluid viscous dampers (SAFVDs) for seismic mitigation of reinforced concrete (RC) elevated liquid Cited by: 5.