Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (2): 279-284.DOI: 10.12068/j.issn.1005-3026.2016.02.027

• Resources & Civil Engineering • Previous Articles     Next Articles

Wind-induced Response Suppression of Transmission Tower-Line System Using a Robust and Semi-active Controller

MA Yong-quan, QIU Hong-xing   

  1. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China.
  • Received:2014-06-04 Revised:2014-06-04 Online:2016-02-15 Published:2016-02-18
  • Contact: MA Yong-quan
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Abstract: The robust H2/Hcontroller designed by multi-objective optimization theory was applied to suppress the wind-induced dynamic response (WIDR) of the transmission tower-line system (TTLS). The uncertain parameters (mass, damping and stiffness) were introduced into perturbed matrixes in vibration (both in-plane and out-plane of the TTLS) state equations, and the H2/H∞_MCO semi-active control strategy was proposed by the linear matrix inequalities (LMI) tool box in the MATLAB and modified clipped-optimal (MCO) control algorithm. An cat’s head-type TTLS with ultra high voltage was used as an example, and the WIDRs of the example under non-control (NC), passive control (PC), constant increment (CI) semi-active control and H2/H∞_MCO semi-active control were computed, respectively. The consequences indicate that the vibration suppression effects of the H2/H∞_MCO on tower displacements, tower accelerations and tower bottom internal forces (shear forces and bending moments) are obviously superior to those of NC, PC and CI.

Key words: transmission tower, damper, dynamic response, vibration control, robustness

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