International Journal of Reliability, Risk and Safety: Theory and Application最新文献

Integrating Second Order Sliding Mode Control and Anomaly Detection Using Auto-Encoder for Enhanced Safety and Reliability of Quadrotor UAVs 集成二阶滑模控制和自编码器异常检测提高四旋翼无人机的安全性和可靠性

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2023-06-26 DOI: 10.30699/ijrrs.5.2.11

Saman Yazdannik, Shamime Sanisales, Morteza Tayefi, R. Esmaelzadeh, M. Khazaee

{"title":"Integrating Second Order Sliding Mode Control and Anomaly Detection Using Auto-Encoder for Enhanced Safety and Reliability of Quadrotor UAVs","authors":"Saman Yazdannik, Shamime Sanisales, Morteza Tayefi, R. Esmaelzadeh, M. Khazaee","doi":"10.30699/ijrrs.5.2.11","DOIUrl":"https://doi.org/10.30699/ijrrs.5.2.11","url":null,"abstract":"This paper presents a comprehensive framework for enhancing the safety and reliability of quadrotor UAVs by integrating second-order sliding mode control (2-SMC) and an advanced anomaly detection and prediction system based on machine learning and AI. The paper addresses the challenges of designing controllers for quadrotors by proposing a novel sliding manifold approach divided into two subsystems for accurate position and attitude tracking. The paper also provides a detailed analysis of the nonlinear coefficients of the sliding manifold using Hurwitz stability analysis. It demonstrates the effectiveness of the proposed method through extensive simulation results. To further assess the safety and reliability of the quadrotor, an anomaly detection and prediction system is integrated with the position and attitude tracking control. The system utilizes machine learning and AI techniques to identify and predict abnormal behaviours or faults in real time, enabling the quadrotor to quickly and effectively respond to critical situations. The proposed framework provides a promising approach for designing robust and safe controllers for quadrotor UAVs. It demonstrates the potential of advanced machine learning and AI techniques for enhancing the safety and reliability of autonomous systems.","PeriodicalId":395350,"journal":{"name":"International Journal of Reliability, Risk and Safety: Theory and Application","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129726527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predictable Maintenance: A Bayesian Network-based Model 可预测维护:基于贝叶斯网络的模型

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2023-06-03 DOI: 10.30699/ijrrs.5.2.10

Mohammad Partovi, Mohsen Amra, Mohammadjavad Pahlevanzadeh, Abbas Alwardi, Mohammad Reza Fathi

引用次数: 0

A Reliable Method for Determining the Tapered Minimum Magnitude in a Probabilistic Seismic Hazard Analysis 概率地震灾害分析中确定最小震级的可靠方法

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2023-05-12 DOI: 10.30699/ijrrs.5.2.9

S. Motaghed, Ahmadreza Fakhriyat

{"title":"A Reliable Method for Determining the Tapered Minimum Magnitude in a Probabilistic Seismic Hazard Analysis","authors":"S. Motaghed, Ahmadreza Fakhriyat","doi":"10.30699/ijrrs.5.2.9","DOIUrl":"https://doi.org/10.30699/ijrrs.5.2.9","url":null,"abstract":"One of the inputs of probabilistic seismic hazard analysis (PSHA) is the minimum magnitude ( m min ) of damaging earthquakes. Recent studies have shown that the choice of m min can affect the results of PSHA. That is, if the m min value is low, the PSHA will be overestimated. Therefore, it is important to choose the m min value in such a way that earthquakes with greater magnitude than m min have the capability to damage the structure. Obviously, the m min depends on the characteristics of the structure and the earthquake. The mechanism of occurrence of earthquakes in each region is such that earthquakes with different characteristics can occur. Therefore, earthquakes with the same magnitude cause different levels of damage to the structure. This paper uses a tapered line instead of the cut-off magnitude for m min . In this regard, we model The 3, 5, and 8-story intermediate concrete frame using Opensees software and perform time history dynamic analysis based on 246 earthquake accelerograms. The structural damage is assumed based on the drift ratio. The drift ratio of 0.004 is assumed as the limit state for the operational performance (OP) level. Using the non-uniform distance number, the m min taper line is obtained as [4.5, 5.5]. This number can be used as the integral lower bound in the PSHA.","PeriodicalId":395350,"journal":{"name":"International Journal of Reliability, Risk and Safety: Theory and Application","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129775247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct Quantile Function Estimation Using Information Principles and Its Applications in Reliability Analysis 信息原理直接分位数函数估计及其在可靠性分析中的应用

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2023-02-24 DOI: 10.30699/ijrrs.5.2.7

Jian Deng

{"title":"Direct Quantile Function Estimation Using Information Principles and Its Applications in Reliability Analysis","authors":"Jian Deng","doi":"10.30699/ijrrs.5.2.7","DOIUrl":"https://doi.org/10.30699/ijrrs.5.2.7","url":null,"abstract":"Jaynes's information principle, i.e., maximum entropy principle (MEP), constrained by probability weighted moments (PWM), has been well established as an alternative method to directly estimate quantile functions (QF) from samples of a random variable. The existence, unbiasedness, and efficiency of the maximum entropy QFs have been illustrated in the literature. However, the issue of how many orders of PWMs is optimal for a given sample of data remains unsolved, and applications of the maximum entropy QFs to reliability analysis in civil engineering are still obscure. This paper serves four main purposes: (1) a new general formulation is developed for the PWM-based MEP without sample normalization; (2) the optimal order of PWMs in MEP is determined by another information principle, i.e., Akaike information criterion; (3) The feasibility of the proposed maximum entropy QFs is illustrated by two case studies in probabilistic modeling of the soil undrained shear strength and the flood frequency; (4) applications of the proposed maximum entropy QFs are substantiated in QF-based first order reliability analysis of a cantilever steel beam with uncorrelated random variables and with correlated random variables. The maximum entropy QFs are compared to common empirical probability distributions, such as normal and lognormal distributions, in reliability analysis to demonstrate the advantages and disadvantages of the method developed.","PeriodicalId":395350,"journal":{"name":"International Journal of Reliability, Risk and Safety: Theory and Application","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130639350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Copula-Based Approach to Reliability Analysis of Phased-Mission Systems 基于copula的分阶段任务系统可靠性分析方法

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2023-02-05 DOI: 10.30699/ijrrs.5.2.6

P. Srivastava, S. Padma Rani

引用次数: 0

Reliability Modeling and Performance Evaluation of Sachet Water Production System Using Gumbel- Hougaard Family Copula 基于Gumbel- Hougaard家族关联的小袋采水系统可靠性建模与性能评价

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2022-12-01 DOI: 10.30699/ijrrs.5.2.2

A. Maihulla, I. Yusuf

引用次数: 0

Optimal Multi-Level Redundancy Allocation Using a New Modified Bat Algorithm 基于改进Bat算法的多级冗余优化分配

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2022-12-01 DOI: 10.30699/ijrrs.5.2.5

M. Farsi

引用次数: 0

Optimising System Continuity in Preventive Maintenance Schedules Based on Integrated Failure Mode and Spare Part Inventory Modelling 基于集成故障模式和备件库存模型的预防性维修计划系统连续性优化

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2022-12-01 DOI: 10.30699/ijrrs.5.2.3

Theyab O. Alamri, J. Mo

{"title":"Optimising System Continuity in Preventive Maintenance Schedules Based on Integrated Failure Mode and Spare Part Inventory Modelling","authors":"Theyab O. Alamri, J. Mo","doi":"10.30699/ijrrs.5.2.3","DOIUrl":"https://doi.org/10.30699/ijrrs.5.2.3","url":null,"abstract":"Systems with multiple components and various configurations are classified as complex. Unless failure modes are carefully considered, the replacement of components or breakdown can lead to the shutdown of the whole system. Because of this, maintaining a complex system output can be challenging, especially if the right preventive maintenance schedule is not determined. In order to support replacement activities, a sufficient supply of spare parts is required. Based on the failure mode identified and effects analysis, this research presents an integrated preventive maintenance scheduling methodology for complex systems. Components and subsystems in the system can be modelled, such that failures in different parts of the system can be predicted based on expected life. To maintain a high level of production during PM, the need to analyse failure modes that result in only partial system failures is necessary. For determining the required number of spare parts, we factor in preventive replacements for each FMEA block. Optimal replacement intervals and spare part quantities are determined using the genetic algorithm. In order to demonstrate the application of the proposed method, numerical experiments are conducted. The developed method in this paper not only improves system reliability and minimises costs but also maintains the continuity of system outcomes during replacement activities.","PeriodicalId":395350,"journal":{"name":"International Journal of Reliability, Risk and Safety: Theory and Application","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131051960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implementation of AI for The Prediction of Failures of Reinforced Concrete Frames 钢筋混凝土框架失效预测的人工智能实现

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2022-12-01 DOI: 10.30699/ijrrs.5.2.1

S. Motaghed, mohammad sadegh Shahid zadeh, ali khooshecharkh, M. Askari

引用次数: 1

Safety assessment of people in public building fire incidents using harmony search algorithm 基于和谐搜索算法的公共建筑火灾事故人员安全评价

International Journal of Reliability, Risk and Safety: Theory and Application Pub Date : 2022-12-01 DOI: 10.30699/ijrrs.5.2.4

Mostafa Abbasi Kia, M. Nadjafi, Adel Nadjafi

{"title":"Safety assessment of people in public building fire incidents using harmony search algorithm","authors":"Mostafa Abbasi Kia, M. Nadjafi, Adel Nadjafi","doi":"10.30699/ijrrs.5.2.4","DOIUrl":"https://doi.org/10.30699/ijrrs.5.2.4","url":null,"abstract":"As we know, people are primarily at risk of different incidents during their life, especially when they encounter unpredictable accidents. For example, fires in public places such as governmental or trade centers during their daily activities make them obliged to evacuate the building rapidly. This research deals with the fire safety of mentioned people by means of the probabilistic method. For this purpose, fire safety is addressed by modeling the egress of the people from the fire to a safe zone. A trade center building with a common layout has been chosen for safety analysis and a limit state function has been developed according to the timeline evacuation model and fire scenario. To define the safety of building visitors, the safety index method has been selected for computing the probability of trapping in fire (fatality) and safety index (beta index). The harmony search algorithm has been used to obtain Hasfoer and Lind reliability index. A sensitivity analysis of the model’s variables has been done to find the most important and effective parameters for fire safety. Results show response time to the fire, area of buildings and length of escape route are more critical in buildings. In other words, the safety of people will improve with decreasing response time and length of evacuation route and increasing dimensions of interior space of buildings.","PeriodicalId":395350,"journal":{"name":"International Journal of Reliability, Risk and Safety: Theory and Application","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125679437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0