DOI of the published article https://doi.org/10.1016/j.proeng.2017.09.083
On dynamic analysis and control of an elevator system using polynomial chaos and Karhunen-Loève approaches
DOI:
https://doi.org/10.31224/3893Keywords:
elevator systems, Nonlinear dynamics, uncertainty quantification, polynomial chaos expansionAbstract
The paper deals with the quantification of uncertainties in an elevator system, subjected to lateral vibration induced by the car guide rail irregularities, with and without a feedback control system. A mathematical model for the elevator system is derived, and a stochastic model for the rail profile irregularities is constructed. This model of uncertainties describes the rail profile as a random field, which is represented by means of Karhunen-Loève expansion. Polynomial chaos is employed to compute the propagation of uncertainties through the stochastic model, in order to evaluate the disturbance rejection properties and robustness of the closed-loop system.
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Copyright (c) 2024 Diego Colón, Americo Cunha Jr, Stefan Kaczmarczyk, José Manoel Balthazar
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