Dual – loop force – displacement mixed control strategy and its application on the quasi – static test

Authors

  • Cong Zeng Harbin Institution of Technology, Harbin, China
  • Bin Wu Harbin Institution of Technology, Harbin, China
  • Guoshan Xu Harbin Institution of Technology, Harbin, China
  • Zheng Wang Harbin Institution of Technology, Harbin, China
  • Tianlin Pan School of Civil Engineering and Architecture, Northeast Electric Power University, Jilin, China

Keywords:

dual-loop force-displacement control method, mixed control strategy, control of servo-hydraulic actuator, quasi-static test, coupling of actuator and specimen

Abstract

The Quasi-static test is a well-known powerful methodology to evaluate the seismic performance of structural components and systems. One of the most important challenges in the Quasi-static testing is to achieve precise boundary conditions, especially for the axial loading of vertical components. The requirement of synchronized displacement loading and target axial force formed a pair of contradiction. A dual-loop force-displacement mixed control strategy is proposed. The presented approach is successfully verified through the quasi-static testing for a full-scale concrete filled steel tube column. The control targets are achieved with an excellent control performance.

Author Biographies

Cong Zeng, Harbin Institution of Technology, Harbin, China

Key Lab of Structures and Dynamic Behavior and Control, Ministry of Education;School of Civil Engineering

Bin Wu, Harbin Institution of Technology, Harbin, China

Key Lab of Structures and Dynamic Behavior and Control, Ministry of Education;School of Civil Engineering

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Published

2018-06-11