Eksploatacja i Niezawodność – Maintenance and Reliability最新文献_第10页

Multi-level health degree analysis of vehicle transmission system based on PSO- Indexed by:BP neural network data fusion 基于PSO-索引的BP神经网络数据融合车辆传动系统多层次健康度分析

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.4

Jianpeng Wu, Jiahao Cui, Yuechao Shu, Yuxin Wang, Ruihan Chen, Liyong Wang

{"title":"Multi-level health degree analysis of vehicle transmission system based on PSO- Indexed by:\u0000BP neural network data fusion","authors":"Jianpeng Wu, Jiahao Cui, Yuechao Shu, Yuxin Wang, Ruihan Chen, Liyong Wang","doi":"10.17531/ein.2023.1.4","DOIUrl":"https://doi.org/10.17531/ein.2023.1.4","url":null,"abstract":"In order to realize the evaluation of the vehicle transmission system\u0000health degree, a prediction model by multi-level data fusion method is\u0000established in this paper. The prediction model applies PSO(Particle\u0000Swarm Optimization)-BP(Back Propagation) neural network algorithm,\u0000calculates the whole machine health degree and each module respective\u0000weights from the test data. On this basis, it analyzes the error between\u0000the model calculated health degree and theoretical health degree. Then\u0000the research verifies the validity and prediction model accuracy. The\u0000health degree which is obtained by the single module feature parameters\u0000fusion, and the vehicle transmission system health degree is investigated,\u0000which is less effective compared to the three-level fusions. After that, by\u0000analyzing the vehicle transmission system multi-parameter feature\u0000weights, it is found that the mechanical module accounted for the largest\u0000damage rate, and the three modules influenced the vehicle transmission\u0000system health degree in the order of mechanical module, hydraulic\u0000module, and electric control module. The study has played a guiding role\u0000in the health management of complex equipment.","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127840120","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

Evaluation of the efficiency of the delivery process in the technical object of transport infrastructure with the application of a simulation model 基于仿真模型的交通基础设施技术对象交付过程效率评价

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.1

Aleksandra Zabielska, M. Jacyna, M. Lasota, Karol Nehring

{"title":"Evaluation of the efficiency of the delivery process in the technical object of \u0000transport infrastructure with the application of a simulation model","authors":"Aleksandra Zabielska, M. Jacyna, M. Lasota, Karol Nehring","doi":"10.17531/ein.2023.1.1","DOIUrl":"https://doi.org/10.17531/ein.2023.1.1","url":null,"abstract":"The article presents the issue of assessing the effectiveness of the\u0000implementation of a logistics process with the use of a simulation model\u0000and queue theory. The process that has been analyzed is the process of\u0000goods’ delivery at the technical object. Firstly, a literature review was\u0000carried out. Next, the authors described the process using the QT\u0000(Queueing Theory). This was possible due to the fact that QT is widely\u0000used in the analysis of systems as well as the assessment of their\u0000effectiveness, maintenance, and reliability. The description,\u0000characteristics and graphic presentation of the system in which the\u0000process is carried out have been included in the study too. Then the\u0000process was implemented in the computer simulation environment.\u0000Simulations were carried out and four variants of the system operation\u0000were analyzed. The comparison of the operating parameters of the\u0000system for each variant allowed for a detailed analysis of its operation\u0000and the influence of selected factors on the implementation of the\u0000process as well as it effectiveness or reliability","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122699912","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: 4

Intelligent fault diagnosis of rolling bearings based on continuous wavelet transform-multiscale feature fusion and improved channel attention mechanism 基于连续小波变换-多尺度特征融合和改进通道关注机制的滚动轴承故障智能诊断

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.16

Jiqiang Zhang, Xiangwei Kong, Liu Cheng, Haochen Qi, Mingzhu Yu

{"title":"Intelligent fault diagnosis of rolling bearings based on continuous wavelet \u0000transform-multiscale feature fusion and improved channel attention mechanism","authors":"Jiqiang Zhang, Xiangwei Kong, Liu Cheng, Haochen Qi, Mingzhu Yu","doi":"10.17531/ein.2023.1.16","DOIUrl":"https://doi.org/10.17531/ein.2023.1.16","url":null,"abstract":"Accurate fault diagnosis is critical to operating rotating machinery safely\u0000and efficiently. Traditional fault information description methods rely on\u0000experts to extract statistical features, which inevitably leads to the\u0000problem of information loss. As a result, this paper proposes an\u0000intelligent fault diagnosis of rolling bearings based on a continuous\u0000wavelet transform(CWT)-multiscale feature fusion and an improved\u0000channel attention mechanism. Different from traditional CNNs, CWT\u0000can convert the 1-D signals into 2-D images, and extract the wavelet\u0000power spectrum, which is conducive to model recognition. In this case,\u0000the multiscale feature fusion was implemented by the parallel 2-D\u0000convolutional neural networks to accomplish deeper feature fusion.\u0000Meanwhile, the channel attention mechanism is improved by converting\u0000from compressed to extended ways in the excitation block to better\u0000obtain the evaluation score of the channel. The proposed model has been\u0000validated using two bearing datasets, and the results show that it has\u0000excellent accuracy compared to existing methods.","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122634007","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: 2

Operational risk assessment model for city buses 城市公交运行风险评估模型

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.14

A. Niewczas, Łukasz Mórawski, Joanna Rymarz, E. Dębicka, P. Hołyszko

{"title":"Operational risk assessment model for city buses","authors":"A. Niewczas, Łukasz Mórawski, Joanna Rymarz, E. Dębicka, P. Hołyszko","doi":"10.17531/ein.2023.1.14","DOIUrl":"https://doi.org/10.17531/ein.2023.1.14","url":null,"abstract":"The development of public transport systems presently focuses on\u0000sustainability. In this situation, the issue of user (passenger) migration\u0000has become important to the transport company as a service provider.\u0000This paper presents an integrated model of the operational risk of vehicle\u0000incapacity, including the following: costs of incidental repairs, costs of\u0000unplanned downtime and costs resulting from potential user migration.\u0000The paper presents the results of operational research on buses of two\u0000makes over a period of 6 years, in the mileage range of 0–420 000 km.\u0000The authors have determined the risk as a regression function of\u0000operational mileage to estimate the optimum life cycle. The quality of\u0000the vehicle was assessed using the criterion of the maximum cost of the\u0000operational incapacity risk being equal to the current residual value of\u0000the vehicle. The research results confirmed the suitability of the\u0000integrated risk model for a comparison of vehicle makes and assessment\u0000of their reasonably foreseeable life cycle in a balanced carrier-vehicleuser system.","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126940364","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: 4

Optimal allocation of reliability improvement target based on multiple correlation failures and risk uncertainty 基于多关联故障和风险不确定性的可靠性改进目标优化分配

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.8

Shuoguo Jia, C. Yan, Jianxiong Kang, Heping Xie, Yongqiao Wei

{"title":"Optimal allocation of reliability improvement target based on multiple \u0000correlation failures and risk uncertainty","authors":"Shuoguo Jia, C. Yan, Jianxiong Kang, Heping Xie, Yongqiao Wei","doi":"10.17531/ein.2023.1.8","DOIUrl":"https://doi.org/10.17531/ein.2023.1.8","url":null,"abstract":"Optimal allocation of the reliability improvement target is essential for\u0000the system optimization design. In order to solve the problems that the\u0000optimization model is with loss of generality and the validity of the\u0000optimal solution is weakened, an optimal allocation method is proposed\u0000by considering multiple correlation failures and risk uncertainty in this\u0000paper. Two new concepts are presented, such as independent failure\u0000results in basic risk, and correlation failure leads to disturbance risk.\u0000A risk assessment machinery of “actual risk = basic risk + disturbance\u0000risk” is proposed. The action mechanisms of the three correlation failures\u0000are studied based on the cooperation game theory, and the generalized\u0000risk models are given under probability measure. Considering the\u0000improvement cost, the expectation and the variance of the reduction of\u0000system risk, a multi-objective optimal allocation model is developed,\u0000which is solved by using the PSO algorithm. Finally, the proposed\u0000optimal allocation is implemented at the 2-stage NGW planetary reducer,\u0000and the results show that it is more efficient and feasible for engineering\u0000practice.","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"137 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126049739","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

Using an LSTM network to monitor industrial reactors using electrical capacitance and impedance tomography – a hybrid approach 使用LSTM网络使用电容和阻抗断层扫描-一种混合方法来监测工业反应堆

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.11

G. Kłosowski, T. Rymarczyk, K. Niderla, M. Kulisz, Łukasz Skowron, M. Soleimani

引用次数: 6

New approach of model based detection of early stages of fuel injector failures 基于模型的喷油器早期故障检测新方法

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.6

J. Mączak, K. Wieclawski, K. Szczurowski

{"title":"New approach of model based detection of early stages of fuel injector failures","authors":"J. Mączak, K. Wieclawski, K. Szczurowski","doi":"10.17531/ein.2023.1.6","DOIUrl":"https://doi.org/10.17531/ein.2023.1.6","url":null,"abstract":"The aim of the work was to develop a method of real time diagnosing\u0000electromagnetic fuel injectors using the observation of electric current\u0000parameters available in the engine control unit. Performing this task\u0000required finding a precise criterion for assessing the correct operation of\u0000an electromagnetic injector. For this purpose, a mathematical model\u0000describing the individual phases of the injector's operation was used,\u0000allowing the simulation of the occurrence of typical failures. On its basis,\u0000symptoms of particular failures were determined based on the\u0000observation of electric current parameters in the control circuit.\u0000Observation of voltage and current waveforms allows to locate both\u0000electrical and mechanical damages to the injectors and to assess the\u0000correctness of the power system components. The presented diagnostic\u0000method allows the detection of the described damages in the early stages\u0000of their development, which prevents damage to the catalytic converter\u0000and other engine systems (valves, piston rings or cylinder surfaces), i.e.\u0000damages resulting from an incorrect fuel mixture.","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131706097","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: 1

Variable-speed drive with series-excited motors in dynamic braking mode 采用串联励磁电机变速驱动，采用动态制动模式

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.9

Perizat Kenessova, V. Kaverin, Galiya Tatkeyeva

{"title":"Variable-speed drive with series-excited motors in dynamic braking mode","authors":"Perizat Kenessova, V. Kaverin, Galiya Tatkeyeva","doi":"10.17531/ein.2023.1.9","DOIUrl":"https://doi.org/10.17531/ein.2023.1.9","url":null,"abstract":"Variable-speed DC drives with series-excited motors are widely used in\u0000the mining industry, transport and lifting equipment. The purpose of the\u0000study is to determine the dynamic characteristics of a variable direct\u0000current (DC) drive with a series-excited motor in the dynamic braking\u0000mode. In the article, there have been developed schematic diagrams of\u0000the power section that ensure stable braking of a variable-speed electric\u0000drive with a series-excited motor. The requirements for the braking mode\u0000have been developed. The studies have been carried out for a saturated\u0000and unsaturated magnetic circuit of an electric motor. The scientific\u0000novelty of the work consists in determining the zone of stable operation\u0000of the dynamic braking mode. As a result, there has been proposed\u0000technical implementation of the power section of a variable-speed\u0000electric drive with a series-excited motor that ensures stable braking.\u0000A special place in the study is the development of two models of an\u0000electric motor with subsequent excitation taking into account the\u0000saturation of the magnetic circuit - mathematical and simulation. Thus,\u0000the article has not only theoretical but also visual and practical\u0000significance in the context of already conducted studies on the subject.\u0000Options for the technical implementation of the braking regime were\u0000also considered in the course of the sequential implementation of the\u0000planned stages of the study.","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126391743","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

Study of transitional phenomena in rail vehicle dynamics in relation to the reliability and operational state of the continuous welded rail track in terms of rail joints 从钢轨接头角度研究轨道车辆动力学过渡现象与连续焊接轨道可靠性和运行状态的关系

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.7

W. Groll, B. Sowiński, R. Konowrocki

{"title":"Study of transitional phenomena in rail vehicle dynamics in relation to the \u0000reliability and operational state of the continuous welded rail track in terms of \u0000rail joints","authors":"W. Groll, B. Sowiński, R. Konowrocki","doi":"10.17531/ein.2023.1.7","DOIUrl":"https://doi.org/10.17531/ein.2023.1.7","url":null,"abstract":"This paper presents the results of experimental and numerical studies on\u0000reliability and monitoring issues of railway infrastructure in terms of\u0000safety and operation. The state of knowledge concerning methods of\u0000assessing track condition, in particular rail joints used in continuous\u0000welded rail track of railway lines is described. Experimental results of\u0000rail joints used in track transition zones and the results of numerical\u0000studies/tests of the rail vehicle-track model are outlined. It is\u0000demonstrated, basing on the analyses of the experimental results, that not\u0000only should the rail joints used in continuous welded rail track be\u0000diagnosed during their acceptance, but also during their operation. It is\u0000proven that the currently used methodology for testing welded rail joints\u0000applied during acceptance testing of contact track is not fully correct and\u0000leads to misinterpretation of the measurement results. Moreover, the\u0000results of numerical simulation tests presented in this paper confirm the\u0000possibility of diagnosing the condition of rail joints by any vehicle\u0000passing over such a track equipped with a suitable system.","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124285549","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: 1

The vertical screw conveying characteristics of cohesive particle and optimization of design parameters 粘性颗粒垂直螺旋输送特性及设计参数优化

Eksploatacja i Niezawodność – Maintenance and Reliability Pub Date : 2023-01-27 DOI: 10.17531/ein.2023.1.13

Suifan Chen, Xiaomeng Zhang, Qipeng Li, Ce Shen, Yongchang Shi

{"title":"The vertical screw conveying characteristics of cohesive particle and optimization \u0000of design parameters","authors":"Suifan Chen, Xiaomeng Zhang, Qipeng Li, Ce Shen, Yongchang Shi","doi":"10.17531/ein.2023.1.13","DOIUrl":"https://doi.org/10.17531/ein.2023.1.13","url":null,"abstract":"The purpose of this paper is to solve the problem of low conveying\u0000efficiency and serious blade wear during vertical screw conveying of\u0000cohesive particles. Firstly, the reliability of DEM simulation was verified\u0000by comparing the simulated and theoretical values and the influence\u0000regularity of different design parameters (rotational speed, pitch, and\u0000clearance) on screw conveying characteristics were analyzed based on\u0000DEM. In addition, the effect of design parameters on the screw\u0000conveying characteristics is identified by ANOVA. Then, the multiobjective optimization model with the both of maximizing the average\u0000mass flow rate and minimizing the maximum wear depth of the blade\u0000was established using the polynomial fitting regression, which was\u0000solved by the non-dominated sorting genetic algorithm (NSGA-II).\u0000Finally, the comprehensive evaluation was used to determine the best\u0000design parameters. The above research results provide a certain\u0000reference for the study of cohesive particle’s vertical screw conveying\u0000characteristics and equipment optimization design.","PeriodicalId":335030,"journal":{"name":"Eksploatacja i Niezawodność – Maintenance and Reliability","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127532152","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