TY - JOUR
T1 - A detailed dynamic model of a six-axis shaking table
AU - Plummer, Andrew R
PY - 2008
Y1 - 2008
N2 - This article describes the modeling of a 5 m x 5 m 6 degree-of-freedom (DOF) shaking table and the subsequent computer simulation of the system's dynamic characteristics. The simulation model is required to aid the development of a closed-loop controller with a bandwidth specified up to 120 Hz, and thus high order dynamics including valve response and structural effects are included. Significant nonlinearities associated with the hydraulic and mechanical components are also included (e.g., spool slew rate and saturation limits, valve overlap, manifold and valve body pressure losses, friction, and geometric nonlinearities). Some model parameters are found from physical knowledge; others are determined experimentally, and methods for estimating key parameters from experimental data are developed. The simulation is implemented using Simulink® and its multi-body mechanical simulation tool SimMechanics®. The simulated response compares well with the measured response of the table.
AB - This article describes the modeling of a 5 m x 5 m 6 degree-of-freedom (DOF) shaking table and the subsequent computer simulation of the system's dynamic characteristics. The simulation model is required to aid the development of a closed-loop controller with a bandwidth specified up to 120 Hz, and thus high order dynamics including valve response and structural effects are included. Significant nonlinearities associated with the hydraulic and mechanical components are also included (e.g., spool slew rate and saturation limits, valve overlap, manifold and valve body pressure losses, friction, and geometric nonlinearities). Some model parameters are found from physical knowledge; others are determined experimentally, and methods for estimating key parameters from experimental data are developed. The simulation is implemented using Simulink® and its multi-body mechanical simulation tool SimMechanics®. The simulated response compares well with the measured response of the table.
UR - http://www.scopus.com/inward/record.url?scp=47549111540&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1080/13632460701457264
U2 - 10.1080/13632460701457264
DO - 10.1080/13632460701457264
M3 - Article
SN - 1363-2469
VL - 12
SP - 631
EP - 662
JO - Journal of Earthquake Engineering
JF - Journal of Earthquake Engineering
IS - 4
ER -