Structural Engineering and Mechanics

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Decentralized energy market-based structural control

  • Lynch, Jerome Peter (Department of Civil and Environmental Engineering, University of Michigan) ;
  • Law, Kincho H. (Department of Civil and Environmental Engineering, Stanford University)
  • Received : 2002.10.21
  • Accepted : 2003.06.04
  • Published : 2004.03.25
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Abstract

Control systems are used to limit structural lateral deflections during large external loads such as winds and earthquakes. Most recently, the semi-active control approach has grown in popularity due to inexpensive control devices that consume little power. As a result, recently designed control systems have employed many semi-active control devices for the control of a structure. In the future, it is envisioned that structural control systems will be large-scale systems defined by high actuation and sensor densities. Decentralized control approaches have been used to control large-scale systems that are too complex for a traditional centralized approach, such as linear quadratic regulation (LQR). This paper describes the derivation of energy market-based control (EMBC), a decentralized approach that models the structural control system as a competitive marketplace. The interaction of free-market buyers and sellers result in an optimal allocation of limited control system resources such as control energy. The Kajima-Shizuoka Building and a 20-story benchmark structure are selected as illustrative examples to be used for comparison of the EMBC and centralized LQR approaches.

Keywords

Acknowledgement

Supported by : National Science Foundation

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