Abstract
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-Loeve 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.
Original language | English |
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Pages (from-to) | 1629-1634 |
Journal | Procedia Engineering |
Volume | 199 |
Early online date | 12 Sept 2017 |
DOIs | |
Publication status | E-pub ahead of print - 12 Sept 2017 |
Keywords
- Elevator systems
- nonlinear dynamics
- uncertainty quantification
- polynomial chaos