Nonlinear state-space control design for displacement-based real-time testing of structural systems

• Author / Creator

  Moosavi Nanehkaran, Seyed Abdol Hadi

• This study presents the nonlinear design of a state space controller to control hydraulic actuators under displacement control, specifically for real-time pseudo-dynamic testing applications. The proposed control design process uses the nonlinear state space model of the dynamics of the system to be controlled; and utilizes state feedback linearization through a transformation of the state variables. Comparisons of numerical simulation results for linear state-space and nonlinear state-space controllers are given. Also robustness of the control design with respect to identified parameters is investigated. It is shown that a controller with improved performance can be designed using nonlinear state space control design techniques, provided that a representative model of the system is available.

• Subjects / Keywords

  • Nonlinear control
  • Displacement based
  • Pseudo dynamic
  • Real time
  • Earthquake
  • Hybrid PSD
  • Structural system
  • PSD
  • State space
  • Simulations
  • Controls

• Graduation date

  Spring 2011

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3X06H

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.