Active control of wind excited buildings: A frequency domain based design approach

J. Suhardjo, B. F. Spencer, A. Kareem

Research output: Contribution to journalArticlepeer-review


A frequency domain approach to optimal control of wind excited buildings is proposed in which the H2 norm of the transfer function from the external disturbance to the regulated output is minimized. This approach provides a mathematical framework in which floor acceleration measurements can be directly used in optimal control force determination and in which building responses that are not states of the structural model can be minimized. A procedure to account for the frequency dependent nature of the wind excitation in optimal control design is established through factorization of the cross-spectral density matrix of the wind fluctuation. To illustrate the methodology, a numerical example is presented in which the measurements of floor accelerations of a 60-story building under an along wind excitation are employed in the control algorithm to reduce the acceleration response of the building.

Original languageEnglish (US)
Pages (from-to)1985-1996
Number of pages12
JournalJournal of Wind Engineering and Industrial Aerodynamics
Issue number1-3
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering


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