Dynamic modeling and experiments on the coupled vibrations of building and elevator ropes

Yang, Dong-Ho; Kim, Ki‐Young; Kwak, Moon Kyu; Lee, Seungjun

doi:10.1016/j.jsv.2016.10.045

Cited by 46 publications

(33 citation statements)

References 11 publications

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“…Coupled vibrations of buildings and elevator ropes with a focus on the analysis of the car side are studied in [32] . An experimental test rig is used to validate the results predicted from the theoretical model.…”

Section: /2/3mentioning

confidence: 99%

Modelling and simulation of a stationary high-rise elevator system to predict the dynamic interactions between its components

Crespo

Kaczmarczyk

Picton

et al. 2018

International Journal of Mechanical Sciences

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Example citation: Sánchez Crespo, R., Kaczmarczyk, S., Picton, P. and Su, H. (2018) Modelling and simulation of a stationary high-rise elevator system to predict the dynamic interactions between its components. International Journal of Mechanical Sciences. 137, It is advisable to refer to the publisher's version if you intend to cite from this work. In a high-rise elevator system lateral vibrations of the suspension and compensating ropes, coupled with vertical motions of the car and counterweight are induced by the building structure motions. When the frequency of the building coincides with the fundamental natural frequency of the ropes, large resonance whirling motions of the ropes result. This phenomenon leads to impacts of the ropes on the elevator walls, large displacements of the car and counterweight making the building and elevator system unsafe. This paper presents a comprehensive mathematical model of a high-rise elevator system taking into account the combined lateral stiffness of the roller guides and guide rails. The results and analysis presented in the paper demonstrate frequency curve veering phenomena and a wide range of resonances that occur in the system. A case study is presented when the car is parked at a landing level where the fundamental natural frequencies of the car, suspension and compensating rope system coincide with one of the natural frequencies of the high-rise building. The results show a range of nonlinear dynamic interactions between the components of the elevator system that play a significant role in the operation of the entire installation.Crown

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Section: /2/3mentioning

confidence: 99%

Modelling and simulation of a stationary high-rise elevator system to predict the dynamic interactions between its components

Crespo

Kaczmarczyk

Picton

et al. 2018

International Journal of Mechanical Sciences

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show abstract

“…The following four cases were carried out in numerical results, to compare and validate the effect of the proposed control: (1) Without input; (2) The control law Equation (34); (3) The control law Equation (47); (4) The classical proportional-integral-derivative (PID) control [36]:…”

Section: Different Casesmentioning

confidence: 99%

“…The control law Equation (47); (4) The classical proportional-integral-derivative (PID) control[36]: For the proposed controls, the appropriate parameters were chosen as follows: PID control has same saturation restriction on control input. The boundary disturbances were assumed as…”

mentioning

confidence: 99%

Modeling and Control for a Multi-Rope Parallel Suspension Lifting System under Spatial Distributed Tensions and Multiple Constraints

et al. 2018

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The modeling and control of the multi-rope parallel suspension lifting system (MPSLS) are investigated in the presence of different and spatial distributed tensions; unknown boundary disturbances; and multiple constraints, including time varying geometric constraint, input saturation, and output constraint. To describe the system dynamics more accurately, the MPSLS is modelled by a set of partial differential equations and ordinary differential equations (PDEs-ODEs) with multiple constraints, which is a nonhomogeneous and coupled PDEs-ODEs, and makes its control more difficult. Adaptive boundary control is a recommended method for position regulation and vibration degradation of the MPSLS, where adaptation laws and a boundary disturbance observer are formulated to handle system uncertainties. The system stability is rigorously proved by using Lyapunov's direct method, and the position and vibration eventually diminish to a bounded neighborhood of origin. The original PDEs-ODEs are solved by finite difference method, and the multiple constraints problem is processed simultaneously. Finally, the performance of the proposed control is demonstrated by both the results of ADAMS simulation and numerical calculation.

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“…Moreover, the optimal control parameters had not been considered in the researches. Yang et al (2017) investigated the couple vibrations of building and elevator ropes with the theoretical and the experimental verification. The proposed model was then used to predict the sways of practical building and elevator ropes.…”

Section: Introductionmentioning

confidence: 99%

Optimal design of control device to reduce elevator ropes responses against earthquake excitation using Genetic Algorithms

Nguyen

Miura

Sone

2019

JAMDSM

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In this paper, the reduction of the displacement responses of the elevator ropes under earthquake excitation has been investigated. The simultaneous vibrations of main rope and compensation rope in a high-rise building under earthquake excitation have been simulated. The varying length of rope is considered that caused the variation of other rope parameters such as mass, damping and stiffness. In order to reduce displacement responses of the compensation rope and the main rope, an actuator device which will change the tension of the ropes is applied at the compensation sheave. The vibrations of both ropes are analyzed by solving numerically the governing equations. A controller is proposed to restrain the displacement responses of the both ropes. A Genetic Algorithm which minimizes the displacement of the ropes and optimizes the control parameters, is introduced and applied to the high-rise elevator rope under earthquake excitations. The expected parameters are provided by standard deviation method. By using the expected control parameters, the proposed method is applied to control the vibrations of both ropes under some cases of earthquakes which are different with the earthquakes in Genetic Algorithm process. The results of the simulation validate the effectiveness of the proposed control method for reducing the displacement responses of the ropes.

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Dynamic modeling and experiments on the coupled vibrations of building and elevator ropes

Cited by 46 publications

References 11 publications

Modelling and simulation of a stationary high-rise elevator system to predict the dynamic interactions between its components

Modelling and simulation of a stationary high-rise elevator system to predict the dynamic interactions between its components

Modeling and Control for a Multi-Rope Parallel Suspension Lifting System under Spatial Distributed Tensions and Multiple Constraints

Optimal design of control device to reduce elevator ropes responses against earthquake excitation using Genetic Algorithms

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