Remaining Useful Life Modelling With an Escalator Health Condition Analytic System

Inez M. Zwetsloot; Yu Lin; Jiaqi Qiu; Lishuai Li; William Ka Fai Lee; Edmond Yin San Yeung; Colman Yiu Wah Yeung; Chris Chun Long Wong

doi:10.1002/qre.70049

Remaining Useful Life Modelling With an Escalator Health Condition Analytic System

Inez M. Zwetsloot
, Yu Lin
, Jiaqi Qiu
, Lishuai Li
, William Ka Fai Lee
, Edmond Yin San Yeung
, Colman Yiu Wah Yeung
, Chris Chun Long Wong

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

4 Downloads (CityUHK Scholars)

Abstract

An escalator's refurbishment is usually linked with its design life as recommended by the manufacturer. However, the actual useful life of an escalator should be determined by its operating condition, which is affected by the runtime, workload, maintenance quality and vibration, rather than age only. The objective of this project is to develop a comprehensive health condition analytic system for quality management of escalators to support refurbishment decisions. This quality management system consists of the following four parts: (1) online data gathering and processing; (2) a dashboard for condition monitoring; (3) a health index model and (4) remaining useful life (RUL) prediction. The results can be used for (a) predicting the RUL of the escalators, in order to support asset replacement planning and (b) monitoring the real-time condition of escalators; including alerts when vibration exceeds the threshold and signal diagnosis, giving an indication of possible root cause (components) of the alert signal. © 2025 The Author(s).

Original language	English
Pages (from-to)	3746-3758
Journal	Quality and Reliability Engineering International
Volume	41
Issue number	8
Online published	3 Sept 2025
DOIs	https://doi.org/10.1002/qre.70049
Publication status	Published - Dec 2025

Funding

The work in this paper was supported by a grant from the Innovation and Technology Fund (ref: PRP-008-20FX) and MTR Corporation Limited. This work is related to Hong Kong Short-Term Patent Application No.32023068734.7.

Research Keywords

condition-based maintenance
data-driven quality
escalator
quality management
remaining useful life

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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title = "Remaining Useful Life Modelling With an Escalator Health Condition Analytic System",

abstract = "An escalator's refurbishment is usually linked with its design life as recommended by the manufacturer. However, the actual useful life of an escalator should be determined by its operating condition, which is affected by the runtime, workload, maintenance quality and vibration, rather than age only. The objective of this project is to develop a comprehensive health condition analytic system for quality management of escalators to support refurbishment decisions. This quality management system consists of the following four parts: (1) online data gathering and processing; (2) a dashboard for condition monitoring; (3) a health index model and (4) remaining useful life (RUL) prediction. The results can be used for (a) predicting the RUL of the escalators, in order to support asset replacement planning and (b) monitoring the real-time condition of escalators; including alerts when vibration exceeds the threshold and signal diagnosis, giving an indication of possible root cause (components) of the alert signal. {\textcopyright} 2025 The Author(s). ",

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author = "Zwetsloot, \{Inez M.\} and Yu Lin and Jiaqi Qiu and Lishuai Li and Lee, \{William Ka Fai\} and Yeung, \{Edmond Yin San\} and Yeung, \{Colman Yiu Wah\} and Wong, \{Chris Chun Long\}",

year = "2025",

month = dec,

doi = "10.1002/qre.70049",

language = "English",

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T1 - Remaining Useful Life Modelling With an Escalator Health Condition Analytic System

AU - Zwetsloot, Inez M.

AU - Lin, Yu

AU - Qiu, Jiaqi

AU - Li, Lishuai

AU - Lee, William Ka Fai

AU - Yeung, Edmond Yin San

AU - Yeung, Colman Yiu Wah

AU - Wong, Chris Chun Long

PY - 2025/12

Y1 - 2025/12

N2 - An escalator's refurbishment is usually linked with its design life as recommended by the manufacturer. However, the actual useful life of an escalator should be determined by its operating condition, which is affected by the runtime, workload, maintenance quality and vibration, rather than age only. The objective of this project is to develop a comprehensive health condition analytic system for quality management of escalators to support refurbishment decisions. This quality management system consists of the following four parts: (1) online data gathering and processing; (2) a dashboard for condition monitoring; (3) a health index model and (4) remaining useful life (RUL) prediction. The results can be used for (a) predicting the RUL of the escalators, in order to support asset replacement planning and (b) monitoring the real-time condition of escalators; including alerts when vibration exceeds the threshold and signal diagnosis, giving an indication of possible root cause (components) of the alert signal. © 2025 The Author(s).

AB - An escalator's refurbishment is usually linked with its design life as recommended by the manufacturer. However, the actual useful life of an escalator should be determined by its operating condition, which is affected by the runtime, workload, maintenance quality and vibration, rather than age only. The objective of this project is to develop a comprehensive health condition analytic system for quality management of escalators to support refurbishment decisions. This quality management system consists of the following four parts: (1) online data gathering and processing; (2) a dashboard for condition monitoring; (3) a health index model and (4) remaining useful life (RUL) prediction. The results can be used for (a) predicting the RUL of the escalators, in order to support asset replacement planning and (b) monitoring the real-time condition of escalators; including alerts when vibration exceeds the threshold and signal diagnosis, giving an indication of possible root cause (components) of the alert signal. © 2025 The Author(s).

KW - condition-based maintenance

KW - data-driven quality

KW - escalator

KW - quality management

KW - remaining useful life

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U2 - 10.1002/qre.70049

DO - 10.1002/qre.70049

M3 - RGC 21 - Publication in refereed journal

SN - 0748-8017

VL - 41

SP - 3746

EP - 3758

JO - Quality and Reliability Engineering International

JF - Quality and Reliability Engineering International

IS - 8

ER -

Remaining Useful Life Modelling With an Escalator Health Condition Analytic System

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Remaining Useful Life Modelling With an Escalator Health Condition Analytic System

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