Modal Parameter Variation of an Earthquake Damaged Building

2012 ◽  
pp. 389-400 ◽  
Author(s):  
Antonio A. Aguilar ◽  
Ruben L. Boroschek ◽  
Leonardo M. Massone
Keyword(s):  
Parameter Variation ◽  
Modal Parameter

scholarly journals Ball shooting tests for identification of modal parameter variation in rotating main spindles

Procedia CIRP ◽  
2018 ◽  
Vol 77 ◽  
pp. 481-484 ◽  
Author(s):  
Dénes Takács ◽  
Richárd Wohlfart ◽  
Ákos Miklós ◽  
Gábor Krajnyák ◽  
András Tóth ◽  
...  
Keyword(s):  
Parameter Variation ◽  
Modal Parameter

COMPARISON OF EMPIRICAL AND THEORETICAL LAWS OF PARAMETER VARIATION OF EXPLOSION WAVES IN THE SEA

1979 ◽  
Vol 40 (C8) ◽  
pp. C8-62-C8-67
Author(s):  
V. E. Fridman
Keyword(s):  
Parameter Variation

Decoupling Stochastic Systems under Plant and Controller Parameter Variation

1986 ◽  
Author(s):  
Gordon K. F. Lee ◽  
Ali H. Bamani
Keyword(s):  
Stochastic Systems ◽  
Parameter Variation ◽  
Controller Parameter

scholarly journals Distinguishing hadronic cascades from hydrodynamic models inPb(160A GeV)+Pbreactions by impact parameter variation

1999 ◽  
Vol 59 (4) ◽  
pp. R1844-R1845 ◽  
Author(s):  
M. Bleicher ◽  
M. Reiter ◽  
A. Dumitru ◽  
J. Brachmann ◽  
C. Spieles ◽  
...  
Keyword(s):  
Impact Parameter ◽  
Parameter Variation ◽  
Hydrodynamic Models

Engineering performance of two analytical methodologies for estimating modal parameter uncertainty for structures

2021 ◽  
Author(s):  
Liang Su ◽  
Xin Huang ◽  
Jing‐quan Zhang ◽  
James Michael LaFave
Keyword(s):  
Parameter Uncertainty ◽  
Modal Parameter

scholarly journals Period-doubling bifurcation analysis and chaos control for load torque using FLC

2021 ◽  
Author(s):  
Eman Moustafa ◽  
Abdel-Azem Sobaih ◽  
Belal Abozalam ◽  
Amged Sayed A. Mahmoud
Keyword(s):  
Floquet Theory ◽  
Chaos Control ◽  
Fuzzy Logic Controller ◽  
Chaotic Behavior ◽  
Period Doubling ◽  
Parameter Variation ◽  
Period Doubling Bifurcation ◽  
Load Torque ◽  
Nonlinear Behaviors ◽  
Scientific Fields

AbstractChaotic phenomena are observed in several practical and scientific fields; however, the chaos is harmful to systems as they can lead them to be unstable. Consequently, the purpose of this study is to analyze the bifurcation of permanent magnet direct current (PMDC) motor and develop a controller that can suppress chaotic behavior resulted from parameter variation such as the loading effect. The nonlinear behaviors of PMDC motors were investigated by time-domain waveform, phase portrait, and Floquet theory. By varying the load torque, a period-doubling bifurcation appeared which in turn led to chaotic behavior in the system. So, a fuzzy logic controller and developing the Floquet theory techniques are applied to eliminate the bifurcation and the chaos effects. The controller is used to enhance the performance of the system by getting a faster response without overshoot or oscillation, moreover, tends to reduce the steady-state error while maintaining its stability. The simulation results emphasize that fuzzy control provides better performance than that obtained from the other controller.

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