Sensitivity Analysis and Design of Univariate Alarm System Based on Delay Timer Considering Measurement Errors

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Mohammad Zadeh Eivaghi v.; Aliyari Shooredeli m.

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Journal: Modares Mechanical Engineering Year:2019 | Volume:19 | Issue:5 Page(s): 1155-1165

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Title

Sensitivity Analysis and Design of Univariate Alarm System Based on Delay Timer Considering Measurement Errors

Author(s)

Mohammad Zadeh Eivaghi v. | Aliyari Shooredeli m. | Issue Writer Certificate

Keywords

Optimal Adaptive ThresholdQ1

Delay TimerQ1

Gas Turbine V94.2Q1

Measurement ErrorQ2

Monte Carlo SimulationQ1

Abstract

An alarm threshold plays an important role in an industrial fault detection system and directly contributes the False Alarm Rate (FAR) and Missed Alarm Rate (MAR). A crucial consideration for designing a threshold is estimating the Probability Density Function (PDF) of both normal and abnormal state based on recorded samples. The existence of Measurement Error in samples will be the contributors to an inaccurate estimation, following that, the alarm threshold will also be inaccurate. Therefore, grasping and recognizing Measurement Errors is highly important; in this paper, this problem will be investigated. For this purpose, firstly, a mathematical closedform of statistical parameters will be estimated, and, then, based on error propagation rule, the computation error of estimated parameters will be explored. It is assumed the high limit and low limit values of the Measurement Error are known or computable. Secondly, an approach is introduced to design a varying alarm threshold adapting to the current value of Measurement Error computing based on change detection algorithm. The proposed method is confirmed via a Monte Carlo Simulation and it is finally applied to an industrial benchmark, Gas Turbine V94. 2, experiencing fouling fault.

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APA: Copy

Mohammad Zadeh Eivaghi, v., & Aliyari Shooredeli, m.. (2019). Sensitivity Analysis and Design of Univariate Alarm System Based on Delay Timer Considering Measurement Errors. MODARES MECHANICAL ENGINEERING, 19(5 ), 1155-1165. SID. https://sid.ir/paper/178045/en

Vancouver: Copy

Mohammad Zadeh Eivaghi v., Aliyari Shooredeli m.. Sensitivity Analysis and Design of Univariate Alarm System Based on Delay Timer Considering Measurement Errors. MODARES MECHANICAL ENGINEERING[Internet]. 2019;19(5 ):1155-1165. Available from: https://sid.ir/paper/178045/en

IEEE: Copy

v. Mohammad Zadeh Eivaghi, and m. Aliyari Shooredeli, “Sensitivity Analysis and Design of Univariate Alarm System Based on Delay Timer Considering Measurement Errors,” MODARES MECHANICAL ENGINEERING, vol. 19, no. 5 , pp. 1155–1165, 2019, [Online]. Available: https://sid.ir/paper/178045/en

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