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

Qiu, Lemiao; He, Ci; Yi, Guodong; Zhang, Shuyou; Wang, Yang; Rao, Yong; Zhang, Lichun

doi:10.3390/en13184821

Cited by 13 publications

(5 citation statements)

References 39 publications

(60 reference statements)

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“…Zhang et al [17] have investigated the horizontal vibration dynamics of an elevator car under the infuence of the airfow. Qiu et al [18] have proposed an energy-based vibration model to investigate the coupling vibration characteristics of an elevator, and it was concluded that its accuracy is better than that of the conventional diferential equation-based vibration model.…”

Section: Introductionmentioning

confidence: 99%

Response Characteristics and Suppression of Transverse Vibrations of Mine Hoisting Conveyances Excited by Multiple Faults

Yao,

Liu,

Deng

2023

Shock and Vibration

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The failures of steel guides can excite complex and intense transverse oscillations of hoisting containers in the mine hoisting process. The present paper mainly contributes to reveal the response characteristics of the transverse oscillations of mine conveyances excited by various faults such as interface misalignment, local bulge, orbital gap, bending deformation, and orbital tilt. First, a rigid-flexible coupled virtual prototype model between the conveyance and the steel guide was established. Subsequently, the vibration response characteristics of the container under various single and coupling excitations were simulated and analyzed. Eventually, a new type of roller cage shoe with a magnetorheological damper was put forward to decrease the transverse impact responses. Based on the hyperbolic tangent model of magnetorheological dampers, a semiactive fuzzy PID method was studied to explore the vibration suppression of the container. The results showed the fuzzy PID method can play a good role in the vibration reduction. This paper can give a fine scheme for the virtual simulation and semiactive vibration control of the mine hoisting system.

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Section: Introductionmentioning

confidence: 99%

Response Characteristics and Suppression of Transverse Vibrations of Mine Hoisting Conveyances Excited by Multiple Faults

Yao,

Liu,

Deng

2023

Shock and Vibration

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“…The weight applied to the rope by the traveling cable varies depending on the position of the car-the higher the height of the building, the greater the weight variation. Therefore, it is difficult to compensate for the optimal equivalent weight using the count weight [8,9]. The removal of the traveling cable can reduce the load applied to the rope, thereby increasing the speed and energy efficiency of the elevator [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

High-Speed Tracking Controller for Stable Power Control in Discontinuous Charging Systems

Lim,

Park,

Jun

et al. 2023

Electronics

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The global population is rapidly increasing, and the urban population is on an even faster trend; therefore, the population density is expected to rise. As the number of people in cities grows, the demand for high-rise buildings is anticipated to increase to address the problem of limited land resources. Therefore, efficient energy management using distributed resources has become increasingly important. Elevators are a vital vertical means of transportation in high-rise buildings, and reducing the weight of their components can lead to favorable conditions for energy utilization and increased speed. Therefore, this study presents an elevator system that supplies power inside an elevator car by eliminating the traveling cable and applying a small-capacity energy storage system (ESS). Additionally, we propose a charging algorithm suitable for the proposed system. Generally, batteries have sensitive electrical properties among the distributed energy resources (DERs). Therefore, controlling the stable maintenance of the transient state of the charging current—even when the DC power is unstable or the load changes rapidly in a system requiring fast charging—is crucial. Owing to the nature of the elevator system to be applied, discontinuous charging is frequent, and the active and efficient management of the battery state of charge (SOC) may be challenging. In addition, since it is necessary to be able to charge as much as possible during a short discontinuous charging time, a current control algorithm with a stable and high-speed response is required. The proposed transient high-speed tracking controller (THSTC) is a method for tracking the time of applying an inductor’s excitation voltage without pulse–width modulation (PWM) switching, which is less sensitive to the controller gain values and has fast responsiveness as well as stable transient response characteristics. The proposed method has good dynamic characteristics with a simple control structure without a complex design, which is useful for systems with repeated discontinuous charging. We validate the performance and effectiveness of the proposed controller through simulations and experiments.

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“…However, the increase of operating speed not only increases the energy consumption of elevators, but also reduces the comfort and safety of riding elevators. [2][3][4]. Therefore, it is important to study the pneumatic characteristics of elevators under different speed operating conditions and design the structure of elevators.…”

Section: Introductionmentioning

confidence: 99%

Research on aerodynamic characteristics and energy consumption of elevator deflectors under different speed conditions

Chen

et al. 2022

J. Phys.: Conf. Ser.

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In order to improve the aerodynamic performance of high-speed elevators, it is necessary to design a reasonable deflector for the elevator car. In this paper, five types of typical deflectors are designed, and the elevator system model including the car, the counterweight and the hoistway is established. Using Fluent computational fluid software, the dynamic grid analysis method is used to carry out transient numerical simulation of the aerodynamic characteristics of the elevator. The variation law of performance parameters such as aerodynamic drag, energy consumption. The research shows that the influence of different deflectors on the aerodynamic performance of the elevator varies greatly under different speed conditions, and different types of deflectors have their own optimal applications. The research work provides a useful reference for the design and selection of the elevator deflector.

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

Cited by 13 publications

References 39 publications

Response Characteristics and Suppression of Transverse Vibrations of Mine Hoisting Conveyances Excited by Multiple Faults

Response Characteristics and Suppression of Transverse Vibrations of Mine Hoisting Conveyances Excited by Multiple Faults

High-Speed Tracking Controller for Stable Power Control in Discontinuous Charging Systems

Research on aerodynamic characteristics and energy consumption of elevator deflectors under different speed conditions

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