Multiple degrees of freedom positioning correction for hybrid simulation

Chia Ming Chang, Thomas M. Frankie, Billie F. Spencer, Daniel A. Kuchma

Research output: Contribution to journalArticlepeer-review


This study proposes a high-precision positioning correction method for multiple degree-of-freedom loading units in hybrid simulation. These loading units can impose inaccurate displacements to the specimens due to the elastic deformation at the reaction wall or connections. To compensate for these displacement errors, an online correction method adjusts the displacement command by the difference between the target and achieved displacement. This correction method also accompanies an accurate 6DOF monitoring system to detect the displacement errors. Two examples of hybrid simulation tests are provided to demonstrate the precise displacements attained on the specimens through this control method.

Original languageEnglish (US)
Pages (from-to)277-296
Number of pages20
JournalJournal of Earthquake Engineering
Issue number2
StatePublished - Feb 17 2015


  • 6DOF Displacement Monitoring
  • 6DOF Positioning Control
  • Elastic Deformation
  • Four-span Curved Bridge
  • Hybrid Simulation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology


Dive into the research topics of 'Multiple degrees of freedom positioning correction for hybrid simulation'. Together they form a unique fingerprint.

Cite this