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Smart Structures and Systems
  Volume 15, Number 3, March 2015 , pages 831-846

An innovative hardware emulated simple passive semi-active controller for vibration control of MR dampers
Jianqiu Zhang and Anil K. Agrawal

    Magneto-Rheological (MR) dampers are being used increasingly because of their adaptability to control algorithms and reliability of passive systems. In this paper, an extensive investigation on performance of MR dampers in semi-active and passive modes has been carried out. It is observed that the overall energy dissipation by MR dampers in passive-on modes is higher than that in semi-active modes for most of the competitive semi-active controllers. Based on the energy dissipation pattern, a novel semi-active controller, termed as \"Simple Passive Semi-Active Controller\", has been proposed for MR dampers. This controller can be emulated by a simple passive hardware proposed in this paper. The proposed concept of controller \"hardware emulation\" is innovative and can also be implemented for other semi-active devices for control algorithms of certain form. The effectiveness and reliability of the proposed controller has been investigated extensively through numerical simulations. It has been demonstrated that the proposed controller is competitive to or more effective than other widely used / investigated semi-active controllers.
Key Words
    structural response control; passive dampers; semi-active dampers; MR dampers
Jianqiu Zhang: Noise, Vibration and Hardness Expert, HELLA Group, Lippstadt, Germany
Anil K. Agrawal: Department of Civil Engineering, The City College of New York, NY 10031, USA

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