Linear motors for multi mobile systems

Chevailler, Samuel; Jufer, Marcel; Perriard, Yves; Duenser, T.; Kocher, H.

doi:10.1109/ias.2005.1518737

Cited by 9 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(1) Where μ is the friction coefficient between brake pads and brake disc, n is pair number of brake, N is positive pressure. 1 2…”

Section: A Braking System For Ropeless Elevatormentioning

confidence: 99%

“…With the continuous increase in building height, the rope weight may exceed the limit of the strength of the rope itself if the rope length becomes lager than 1,000m. Therefore rope-less elevators are required to realize a high-rise skyscraper elevator system with sufficient transport capacity [1][2][3]. Permanent Magnet Linear Synchronous Motor (PMLSM) has the characteristics of larger thrust, high efficiency, high power factor, is the ideal driving source for rope-less lifting system.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Condition Monitoring of Rope-less Elevator Braking System Based on Wavelet Denoising

Zhang¹,

Yu²,

Wang³

2013

JCP

View full text Add to dashboard Cite

The rope-less elevator driven by Permanent Magnet Linear Synchronous Motor (PMLSM) is a new technology for high-rise buildings. In the practical operation, PMLSM inevitably encounters various kinds of turbulences which directly affect the rope-less elevator's operation. The braking system is important for rope-less elevator safe and steady operation. Usually, the ordinary inspections are not able to detect some early stage faults in the elevator braking system. Based on the analyzing of braking system common faults, the article proposes a rope-less elevator braking system monitoring scheme and presents a method that uses air gap sensor, hydraulic pressure transducer and disc spring pressure sensor in order to detect running condition of braking system. The sampling signals are inevitably influenced by noise, which degrades the accuracy and precision of an analysis. De-noising by soft-thresholding is a new signal inspection method in wavelet analysis. On the base of briefly introducing wavelet de-noising theory, a wavelet de-noising analysis method is presented. The study shows that the useful information reflecting the condition of braking system can be effectively extracted from highly noised signals by soft-thresholding de-noising method.

show abstract

“…(1) Where μ is the friction coefficient between brake pads and brake disc, n is pair number of brake, N is positive pressure. 1 2…”

Section: A Braking System For Ropeless Elevatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Condition Monitoring of Rope-less Elevator Braking System Based on Wavelet Denoising

Zhang¹,

Yu²,

Wang³

2013

JCP

View full text Add to dashboard Cite

show abstract

“…The research on linear motors is new compared to rotational machines [6], and generally is handled in contexts where weight of the mover is not critical to performance which simplifies the design requirements and analysis. Recently however, linear motors for drive of vertical loads in transportation have been also studied [7,8,9,10] where high thrust to weight ratio is required. A strong candidate is permanent magnet linear synchronous motors (PMLSM), which has become feasible in the recent years with the advances in permanent magnet technology where high coercivity permanent magnet material with low cost has become available [8,9,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Recently however, linear motors for drive of vertical loads in transportation have been also studied [7,8,9,10] where high thrust to weight ratio is required. A strong candidate is permanent magnet linear synchronous motors (PMLSM), which has become feasible in the recent years with the advances in permanent magnet technology where high coercivity permanent magnet material with low cost has become available [8,9,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Linear motor for multi--car elevators: design and position measurement

Gürbüz¹,

Kazan²,

Onat³

et al. 2011

Turkish Journal of Electrical Engineering and Computer Sciences

View full text Add to dashboard Cite

Multi-car elevator is an emerging technology consisting of two or more elevator cars moving independently in an elevator hoistway, which has become more appealing as building heights increase. In this paper, the design and drive methodologies for a linear motor driven multi-car elevator system with independently moving cars is introduced together with experimental results. Additionally, a safety method developed for the linear motor elevator and the conditions necessary for its proper operation are discussed. The new results introduced in this paper are in the areas of the design method of the linear motor for multi-car elevator system, and the preliminary results for the position measurement system.

show abstract