Combining PHM information and system architecture to support aircraft maintenance planning

Ferri, Felipe; Rodrigues, Leonardo Ramos; Gomes, João P. P.; Medeiros, Ivo Paixão de; Galvão, Roberto Kawakami Harrop; Nascimento, Cairo Lúcio

doi:10.1109/syscon.2013.6549859

Cited by 13 publications

(19 citation statements)

References 5 publications

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“…(2) Censoring samples which are supposed to not reach real lifetime are not considered. Therefore, error of standard life table is serious in estimation of sample with high censoring rate.…”

Section: Improved Life Tablementioning

confidence: 99%

“…If right censoring samples are assumed to still have certain probability of being censored or exceeding the maximum of sample and only part of the samples may be converted into complete samples, then I w w P j ð Þ is denoted as Eq. (2). Once the censoring sample is converted into complete sample, frequency r j w of converted censoring sample shall be corrected; otherwise, the total frequencies of samples before and after conversion will be inconsistent.…”

Section: Ideas Of Improved Life Tablementioning

confidence: 99%

“…(3) Right censoring sample at jth interval is converted into interval I w w P j ð Þ and their frequency r j w is obtained by Eqs. (1) or (2). (4) Left censoring samples at jth interval are converted into interval I w w 6 j ð Þand their frequency l j w is calculated by Eq.…”

Section: Steps Of Improved Life Tablementioning

confidence: 99%

“…1,2 In order to enhance the reliability of aileron of Airbus new-generation A350XWB, firstly, it is necessary and helpful to evaluate reliability of elevator in A320 aileron. However, uncertainty of various censored data frequently seen in aileron maintenance increases the difficulty in reliability evaluation.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of aileron actuator reliability with censored data

Zuo

Liu

et al. 2015

Chinese Journal of Aeronautics

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For the purpose of enhancing reliability of aileron of Airbus new-generation A350XWB, an evaluation of aileron reliability on the basis of maintenance data is presented in this paper. Practical maintenance data contains large number of censoring samples, information uncertainty of which makes it hard to evaluate reliability of aileron actuator. Considering that true lifetime of censoring sample has identical distribution with complete sample, if censoring sample is transformed into complete sample, conversion frequency of censoring sample can be estimated according to frequency of complete sample. On the one hand, standard life table estimation and product limit method are improved on the basis of such conversion frequency, enabling accurate estimation of various censoring samples. On the other hand, by taking such frequency as one of the weight factors and integrating variance of order statistics under standard distribution, weighted least square estimation is formed for accurately estimating various censoring samples. Large amounts of experiments and simulations show that reliabilities of improved life table and improved product limit method are closer to the true value and more conservative; moreover, weighted least square estimate (WLSE), with conversion frequency of censoring sample and variances of order statistics as the weights, can still estimate accurately with high proportion of censored data in samples. Algorithm in this paper has good effect and can accurately estimate the reliability of aileron actuator even with small sample and high censoring rate. This research has certain significance in theory and engineering practice. ª 2015 Production and hosting by Elsevier Ltd. on behalf of CSAA & BUAA. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Section: Improved Life Tablementioning

confidence: 99%

Section: Ideas Of Improved Life Tablementioning

confidence: 99%

Section: Steps Of Improved Life Tablementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of aileron actuator reliability with censored data

Zuo

Liu

et al. 2015

Chinese Journal of Aeronautics

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“…when the combined failures of individual components will lead to a system failure). In [9], the authors proposed a method for obtaining the S-RUL distribution on the basis of component level RULs and a Fault Tree representation of the system architecture. This work presents a task assignment algorithm that considers health monitoring information in a system level.…”

Section: Introductionmentioning

confidence: 99%

PHM-based Multi-UAV task assignment

Medeiros

Rodrigues

Santos

et al. 2014

2014 IEEE International Systems Conference Proceedings

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This paper is relating to the application of Integrated Vehicle Health Management (IVHM) concepts based on Prognostics and Health Monitoring (PHM) techniques to Multi-UAV systems. Considering UAV as a mission critical system, it is expected and required to accomplish its operational objectives with minimal unscheduled interruptions. So that, it does make sense for UAV to take advantage of those techniques as enablers for the readiness of multi-UAV. The main goal of this paper is to apply information from a PHM system to support decision making through an IVHM framework. PHM system information, in this case, comprises UAV remaining useful life (RUL) estimations. UAV RUL is computed by means of a fault tree analysis that it is fed by a distribution function from a probability density function relating time and failure probability for each UAV critical components. The IVHM framework, in this case, it is the task assignment based on UAV health condition (RUL information) using the Receding Horizon Task Assignment (RHTA) algorithm. The study case was developed considering a team of electrical small UAVs and pitch control system was chosen as the critical system.

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Prediction of the Remaining Useful Life for Components of Automated Processes

Stetter

2019

Fault-Tolerant Design and Control of Automated Vehicles and Processes

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Combining PHM information and system architecture to support aircraft maintenance planning

Cited by 13 publications

References 5 publications

Evaluation of aileron actuator reliability with censored data

Evaluation of aileron actuator reliability with censored data

PHM-based Multi-UAV task assignment

Prediction of the Remaining Useful Life for Components of Automated Processes

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