Traffic analysis of a three-dimensional elevator system

So, Albert; Al-Sharif, Lutfi; Hammoudeh, Ahmad

doi:10.1177/0143624417710106

Cited by 9 publications

(15 citation statements)

References 16 publications

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“…In [8], the concept of a three-dimensional elevator system was introduced in a super-large building. The proposed virtual three-dimensional elevator system assumed that an elevator car can run in three directions (but obviously not at the same time).…”

Section: Innovative Design Of a Vertical And Transverse Elevator In Dmentioning

confidence: 99%

Innovative Design of a Vertical and Transverse Elevator in Double Shafts, Based on TRIZ Theory

Chen¹,

Li²,

Yang³

et al. 2019

SV-JME

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With the rapid growth of urban populations, the scale of modern buildings is expanding, and the span of buildings is increasing. Traditional elevators can only solve the problem of vertical transportation. Passengers still need to spend time walking to their destination after leaving the elevator. Based on the theory of inventive problem solving (TRIZ), this paper uses functional models, causal analysis, conflict analysis, the Su-Field model, and other tools to innovate on the basis of traditional elevators. A vertical and transverse elevator design proposal for double shafts structures and corresponding control strategies is proposed. Based on C#, simulations of the effect of the vertical and transverse elevator on the passenger mobility efficiency are conducted in an 8-story building at different transverse distances and densities. The simulation results show that the vertical and transverse elevator can effectively improve the mobility efficiency of passengers in the horizontal direction in the studied environment, and the mobility efficiency of all passengers also significantly improves. As the transverse distance increases, the mobility efficiency of all passengers using the proposed elevator also increases.

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Section: Innovative Design Of a Vertical And Transverse Elevator In Dmentioning

confidence: 99%

Innovative Design of a Vertical and Transverse Elevator in Double Shafts, Based on TRIZ Theory

Chen¹,

Li²,

Yang³

et al. 2019

SV-JME

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“…But for efficient traffic, during up-peak periods, a car is only allowed to serve two vertical hoistways, at most, because zig-zag movement on the vertical facade is both energy inefficient and very time consuming. Finally, the development was extended to a truly three-dimensional system 18 where a car first moves vertically along designated hoistways outside the building until the destination floor is reached. Then, it can move along horizontal zigzag paths around the floor to reach destination stops.…”

Section: History Of Development Of Ropeless Elevatorsmentioning

confidence: 99%

A study of linear PMSM driven ropeless elevators

Chan

2018

Building Services Engineering Research and Technology

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In recent years, buildings have become taller and wider. The conventional approach of one roped elevator car per hoistway seems increasingly impractical. The idea of ropeless elevators using linear motors was proposed more than 30 years ago, but it was merely treated as wishful thinking by the industry at that time due to lots of safety concerns. And discussion by the industry has mainly been qualitative in nature. In recent years, an international manufacturer announced the development of a prototype and the world's first installation may probably be open to public before the end of 2018. So far, academic studies have mainly focused on the study of linear motors with generic applications, while this paper focuses on the performance of the motor drive from an elevator's point of view. In this paper, we investigate the mechanism of the drive, and the linear permanent magnet synchronous motor and, by discretizing the equations of the full mathematical model, we fine tune the parameters and design suitable controllers. We evaluate its performance by computer simulation, based on the necessary kinematics of a real elevator, so as to arrive at some design guidelines. Finally, the most critical safety concern, i.e. free fall during a total power failure, is quantitatively studied by short circuiting all motor windings. Methods to achieve a reasonably constant and low descending speed, have been studied with parameters estimated analytically, and are verified by simulation. For the sake of illustrating the concept as an initial trial, simplified circuit models, controllers and sensors are all assumed as being ideal. It is hoped that this paper will stimulate the research interest of both the academic world and the industry, while the inclusion of more losses, armature reactions, and imperfections, etc., could be tackled in a further study. Practical application: The application of one roped elevator car in taller and wider buildings seems increasingly impractical. This paper considers the analysis of the application of ropeless elevators using linear motors focusing on the performance of the motor drive from an elevator's point of view. A basic mathematical framework is developed to study and design the controllers and drive of a multi-car elevator system by using linear permanent magnet synchronous motors with emphasis on the elevator performance as a whole system. The paper is aimed at stimulating research interest to drive the appropriate analysis and application of linear permanent magnet synchronous motor driven ropeless elevators.

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“…The end of the second decade of the twenty-first century has witnessed a growing diversity of devices and information processing which smart buildings and cities are introducing into vertical (now also 'two-dimensional' , c.f. thyssenkrupp elevator MULTI [1], and maybe 'three-dimensional' in the future [2]) building transportation systems. A new generation of lift systems has been developed offering increased levels of personal response particularly as a result of supporting destination call registration.…”

Section: Introductionmentioning

confidence: 99%

Standard Elevator Information Schema: Its Origins, Features and Example Applications

Beebe¹,

Hammoudeh²

2021

Smart Cities - Their Framework and Applications

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A generational change is taking place in building transportation systems as manufacturers and maintenance companies begin to integrate their products and services with the technologies of smart buildings and smart cities. Frequently this integration relies on the Internet of Things and cloud services. The diverse and heterogeneous nature of such collaborations requires a common shared semantic understanding of the complex and dense information that may be generated by transportation systems in buildings. The Standard Elevator Information Schema (SEIS) provides this in a format which is both machine and human readable. The role of the schema is to provide the 'vocabulary' for these collaborations. At the same time the schema specifies the properties, relationships and validation rules that define the information model, which could form the foundation upon which all elements of building transportation control and monitoring functions are constructed. SEIS is published under the Collective Commons licence and is free to download and incorporate into any product with the objective of reaching the broadest audience. This chapter discusses the origins and features of SEIS and provides a varied set of example applications. Consideration is also given to the issues of cyber security and data protection.

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Traffic analysis of a three-dimensional elevator system

Cited by 9 publications

References 16 publications

Innovative Design of a Vertical and Transverse Elevator in Double Shafts, Based on TRIZ Theory

Innovative Design of a Vertical and Transverse Elevator in Double Shafts, Based on TRIZ Theory

A study of linear PMSM driven ropeless elevators

Standard Elevator Information Schema: Its Origins, Features and Example Applications

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