University of Illinois Urbana-Champaign

Model-Based Feedforward-Feedback Tracking Control for Real-Time Hybrid Simulation

Phillips, Brian M.; Spencer, Billie F., Jr.

Permalink

https://hdl.handle.net/2142/25933

Description

Title
Model-Based Feedforward-Feedback Tracking Control for Real-Time Hybrid Simulation
Author(s)
  • Phillips, Brian M.
  • Spencer, Billie F., Jr.
Issue Date
2011-08
Keyword(s)
  • real-time hybrid simulation
  • large-scale
  • hydraulic actuator control
  • MR damper
  • experimental testing
Abstract
Substructure hybrid simulation is a powerful, cost-effective alternative for testing structural systems, closely coupling numerical simulation and experimental testing to obtain the complete response of a structure. In this approach, well-understood components of the structure are modeled numerically, while the components of interest are tested physically. Generally, an arbitrary amount of time may be used to calculate and apply displacements at each step of the hybrid simulation. However, when the ratedependent behavior of the physical specimen is important, real-time hybrid simulation (RTHS) must be employed. Computation, communication, and servo-hydraulic actuator limitations cause delays and lags which lead to inaccuracies and potential instabilities in RTHS. This report proposes a new model-based servo-hydraulic tracking control method including feedforward-feedback links to achieve accurate tracking of the desired displacement in real-time. The efficacy of the proposed approach is demonstrated through RTHS of a nine-story steel building employing a 200 kN large-scale magnetorheological (MR) damper as the rate-dependent physical specimen.
Publisher
Newmark Structural Engineering Laboratory. University of Illinois at Urbana-Champaign.
Series/Report Name or Number
Newmark Structural Engineering Laboratory Report Series 028
ISSN
1940-9826
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/25933
Copyright and License Information
Copyright held by the authors. All rights reserved.

Owning Collections

Newmark Structural Laboratory Report Series (NSEL Report Series ISSN 1940-9826) PRIMARY
Report series highlights research conducted at the Newmark Structural Engineering Laboratory