On nonlinear horizontal dynamics and vibrations control for high-speed elevators

Santo,; Balthazar, José Manoel; Tusset, Ângelo Marcelo; Piccirilo, V; Brasil, Reyolando Manoel Lopes Rebello da Fonseca; Silveira, Marcos

doi:10.1177/1077546316667324

Cited by 44 publications

(39 citation statements)

References 42 publications

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“…A equação (3), também pode ser representada pelas equações diferenciais de primeira ordem: na forma de espaços de estados adimensional (SANTO et al, 2016;: 4 6 1 5 2 3 3 6 6 5 5 4 4 1 3 3 5 3 2 1 3 4 4 3 4 3 3 2 1 1 2…”

Section: Modelo Matemáticounclassified

“…Para realizar as simulações numéricas serão considerados os parâmetros utilizados por Santo et al (2014Santo et al ( , 2016, Rivas et al (2014) A é a amplitude de excitação (m), e represente as irregularidades da guia e dos roletes de contato com a guia, Hz f é a frequência de excitação (Hz), e representa a velocidade de deslocamento do elevador. Como pode ser observado nos resultados apresentados na Figura 4, a velocidade do elevador não é o principal fator que afeta a redução de conforto dos passageiros, e sim as irregularidade nas guias ou no roletes em contato com as guias.…”

Section: Simulações Numéricasunclassified

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Análise numérica dos níveis de vibração em elevadores de alta velocidade

Tusset

Lenzi

2020

RSS

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Resumo Com o crescimento acelerado de edifícios cada vez mais altos, também cresce a demanda por elevadores de alta velocidade. Contudo, o aumento da velocidade de deslocamento tem gerado preocupações dos projetistas e engenheiros com o conforto e segurança dos passageiros, e dos profissionais que trabalham como ascensorista. Considerando a importância de analisar os níveis de vibração que possam ser prejudiciais à saúde ou conforto dos passageiros este trabalho tem como objetivo apresentar por meio de simulações numéricas os possíveis níveis de vibrações horizontais que os passageiros e ascensoristas estão expostos dentro da cabine do elevador devido a deformações e desalinhamento dos trilhos de guia e roletes de contado da cabine com os trilhos guia. Para simular, analisar e classificar os níveis de vibração e conforto dos passageiros são realizadas simulações numéricas considerando um modelo matemático que representa o deslocamento lateral da cabine e dos roletes de contato com as guias e uma perturbação externa que representa as deformações e desalinhamento dos trilhos guia e o aumento da velocidade do elevador, associando os níveis de acelerações laterais do elevador com os níveis de conforto sentidos pelos passageiros conforme as normas ISO 2631 e BS 6841. Simulações numéricas demonstraram que imperfeições nos trilhos são os maiores responsáveis pela redução do nível de conforto dos passageiros, e que o aumento da velocidade pode melhorar o nível de conforto retirando a cabine da faixa de ressonância. Palavras-chave: Qualidade de vida, Qualidade de vida no trabalho, Vibração no corpo humano.

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Section: Modelo Matemáticounclassified

Section: Simulações Numéricasunclassified

Análise numérica dos níveis de vibração em elevadores de alta velocidade

Tusset

Lenzi

2020

RSS

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“…ese systems have six actuators that independently activate the guide rollers. Santo et al [20] investigated the horizontal nonlinear response of a three-degree-of-freedom vertical transportation model excited by guide rail deformations. A control strategy based on the state-dependent Riccati equation was proposed.…”

Section: Introductionmentioning

confidence: 99%

A Vibration-Related Design Parameter Optimization Method for High-Speed Elevator Horizontal Vibration Reduction

Qiu

Wang

Zhang

et al. 2020

Shock and Vibration

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High-speed elevator horizontal vibration (HsEHV) is a problem that seriously affects ride comfort. To solve this problem, a design parameter optimization method for HsEHV reduction was studied. A dynamic equation of HsEHV was established, and its response value was calculated using a precise integration method. The influence of the design parameters on horizontal vibration was also analyzed. An optimization model of the design parameters for HsEHV reduction was constructed, and the response surface model of objective function (the peak-to-peak value of horizontal vibration acceleration) was constructed using Latin hypercube sampling. We adopted a multiobjective genetic algorithm to optimize the design parameters for horizontal vibration reduction and used the min-max standardization method to select an optimal solution set. Finally, a KLK2 high-speed elevator made by Canny Elevator Co., Ltd., was utilized as an example to analyze the influencing factors of HsEHV, optimize the design parameters to reduce horizontal vibration, and verify the optimized results using numerical calculation and prototype testing.

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“…The parameters were obtained through the Finite Element Method. A vibration control strategy based on the state-dependent Ricatti equation was proposed in [20] to suppress the horizontal nonlinear behavior after investigating the tilting motion of the lift car. A control device composed of two rotary electric motors was proposed in [21] to limit the irregular horizontal motion of the lift car on the guide rail, while not introducing any additional vertical vibration.…”

Section: Introductionmentioning

confidence: 99%

“…Establishment of a comprehensive vibrational model would construct the theoretic basis of subsequent analysis for vibration patterns, influencing factors, and vibration-control-oriented optimization. Traditionally, vertical [28,31,32] and horizontal [20,33,34] vibrations are treated separately. The coupling effect has not been taken into account properly.…”

Section: Introductionmentioning

confidence: 99%

Energy-Based Vibration Modeling and Solution of High-Speed Elevators Considering the Multi-Direction Coupling Property

Qiu

et al. 2020

Energies

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Vibration of a high-speed elevator is one of the major factors contributing to a safe, stable and comfortable ride. Vibration control and systematic optimization rely on the establishment of an accurate and reliable model. An energy-based vibration model (EVM) is proposed in this paper to describe the multi-directional coupling properties of high-speed elevators. After analyzing the structural and kinematic characteristics, a combination of the kinematic energy, elastic potential energy and virtual works is implemented to describe the vibrational characteristics. The Gaussian precise integration method is implemented to obtain accurate solutions because of the infinite degrees of freedom and the time-varying parameters. An example study is conducted using the KLK2 high-speed elevator. EVM is established to obtain the Max(Pk)/Pk and A95 indices of the X, Y, Z axis vibrational acceleration through simulations. A comparison is proposed between the proposed EVM method, conventional methods based on differential-equation vibration model (DVM) and real prototype experimental data. Results show that the proposed EVM method could achieve more accurate results than the conventional DVM method. Deviations of these indicators are less than 5%, which suggest the efficiency, precision and reliability of the proposed EVM.

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On nonlinear horizontal dynamics and vibrations control for high-speed elevators

Cited by 44 publications

References 42 publications

Análise numérica dos níveis de vibração em elevadores de alta velocidade

Análise numérica dos níveis de vibração em elevadores de alta velocidade

A Vibration-Related Design Parameter Optimization Method for High-Speed Elevator Horizontal Vibration Reduction

Energy-Based Vibration Modeling and Solution of High-Speed Elevators Considering the Multi-Direction Coupling Property

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