Vibration Control of Ultra High Speed Elevator by Active Mass Damper. 1st Report. Study by Optimal Control Theory.

順彦, 豊嶋; 晃正, 上村; 正夫, 永井; 春浩, 江; 崇義, 鎌田

doi:10.1299/kikaic.65.3479

Cited by 9 publications

(4 citation statements)

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“…In consideration of the Leibnitz's rule and the partial integration method, Equations (14) and (15) could be achieved.…”

Section: Basic Energy-based Vibration Model (Evm)mentioning

confidence: 99%

“…Vibration cannot be eliminated totally and thoroughly, but could be controlled and reduced to increase riding comfortability for passengers. A reduced order control model of the ultra high speed elevator was generated in [14], and the performance was proved through numerical simulations. Lateral vibrations of the traction rope caused by wind perturbation were studied in [15] considering the rope stretch, with the assumption that the axial, vertical velocity was treated constant.…”

Section: Introductionmentioning

confidence: 99%

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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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“…In consideration of the Leibnitz's rule and the partial integration method, Equations (14) and (15) could be achieved.…”

Section: Basic Energy-based Vibration Model (Evm)mentioning

confidence: 99%

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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“…Active vibration control is a major method for suppressing the vibration. To isolate the cabin from horizontal vibrations caused by the roughness of the rails which guide the elevator cabin, a control system using a servo-motor (4), (5) , an active mass damper system (6), (7) and active roller guides (8) were trialed. The performances of these systems were examined and some of them were already being used in practice.…”

Section: Introductionmentioning

confidence: 99%

Active Vibration Control of an Elevator Car Using Two Rotary Actuators

Nakano

Hayashi

Suda

et al. 2011

JSDD

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A new control device is proposed to isolate an elevator cabin from irregularities on a guide rail. The device consists of two rotary electric motors with disks and eccentric masses. One motor produces torque to rotate the eccentric mass according to the command signals from the controller for horizontal control, while the other rotates the mass to eliminate the unwanted vertical force. To design the optimal controller to reduce the horizontal vibration of the cabin, the dynamics of the cabin, including the proposed control device, are described by a linear equation. The performance of the proposed control system is examined through numerical simulations taking into consideration the nonlinear characteristics of the rotating masses, which are neglected in designing the controller, and through experiments with a miniature elevator cabin carrying the proposed actuator. The results indicate the proposed control device reduces the horizontal vibration without producing the unwanted vertical vibration.

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“…Wind and road vibration caused by passing vehicles can cause a lighting pole to vibrate (2) . Vibration in an elevator cage, meanwhile, can be caused by the cable-hoisting motor and curved guide rails (3) .…”

Section: Introductionmentioning

confidence: 99%

59155 Simultaneous Vibration Control in Two Directions Using an Impact Damper System(Contact, Impact, and Friction)

Nagashima

Sato²,

Tanaka³

2010

ACMD

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A vibration model for a beam having impact damper on one end was created and damping characteristics when vibrating that model in two directions simultaneously was examined. An impact damper, which consists of walls and an impactor installed in a vibration system, is a type of damping device that makes use of collision phenomena.In the experimental equipment, a plate was attached to one end of a cantilever beam and a container was placed at each end of that plate. Each side of the container was equipped with a wall so that the impactor would collide with the walls and base surface when the container vibrated in the horizontal direction and vertical direction. Such a collision results in an exchange of energy reducing the vibrational energy of the device (container). The first mode of vibration (about 2 Hz) of the equipment corresponds to vibration in the horizontal direction and its second mode of vibration (about 20 Hz) corresponds to vibration in the vertical direction.These two vibration modes were excited simultaneously so that the container vibrated in two directions simultaneously. It was found that vibration in the vertical direction reduced the damping effect in the horizontal direction. The mechanical energy of the vibration system was calculated by numerical simulation and the mechanism behind this reduced damping effect in the horizontal direction due to vertical vibration was examined.

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Vibration Control of Ultra High Speed Elevator by Active Mass Damper. 1st Report. Study by Optimal Control Theory.

Cited by 9 publications

References 0 publications

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

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

Active Vibration Control of an Elevator Car Using Two Rotary Actuators

59155 Simultaneous Vibration Control in Two Directions Using an Impact Damper System(Contact, Impact, and Friction)

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