检索结果-内蒙古大学图书馆

14th International Conference on Quality, reliability, Risk, Maintenance, and Safety engineering, QR2MSE 2024

作者： Liu, Bo Yu, Haoren Zou, Jiawei Yang, Tonggou Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781837242672

Supercapacitors are increasingly utilized in the new energy automotive industry, favored for their long cycle life, high power density, and environmental sustainability. Accurately predicting the Remaining Useful Life (RUL) of supercapacitors is crucial for timely replacement and avoiding losses associated with unexpected failures. This paper introduces a novel cycle life prediction method for supercapacitors, employing a Genetic Algorithm-Long Short-Term Memory (GA-LSTM) approach. Initially, a Moving Average Filter (MAF) is applied to the degradation data of 20 different supercapacitors for noise reduction. Subsequently, a multi-task learning strategy is implemented, training the LSTM model multiple times to enhance its predictive accuracy. The Genetic Algorithm is then utilized to optimize the LSTM's hyperparameters, significantly refining the prediction model. By inputting only 10% of the test data, the trained model successfully predicts the supercapacitor’s RUL. To validate the method's efficacy, performance tests on eight diverse datasets were conducted. The results indicate that the Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) of this method are maintained within 0.0041 and 0.0032, respectively, showcasing a more precise RUL prediction for supercapacitors compared to traditional LSTM approaches and those without noise reduction. © The Institution of engineering & Technology 2024.

关键词： Automotive industry

来源：评论

学校读者我要写书评

暂无评论

Radar reliability modeling approach in the repressive electromagnetic environment 7

Radar reliability modeling approach in the repressive electr...

引用

7th International Conference on Communication, Image and Signal Processing, CCISP 2022

作者： Shang, Dapeng Liang, Le Fang, Xiaotong Sun, Yongquan Center for Quality and Reliability China Institute of Marine Technology Economy Beijing China Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin China

ISBN: (数字)9781665459594

ISBN: (纸本)9781665459594

The ability of radars to detect targets is affected by the electromagnetic interference. Aiming at the problem of estimating radar reliability under a repressive electromagnetic environment, this study analyzed the influences of suppressive jamming on the maximum detection range from the perspective of energy domain, then the quantitative method of radar reliability under electromagnetic interference was proposed. With the help of the Monte-Carlo technology, the simulation of jamming and working signals were carried out, then the maximum detection range was estimated, and finally, the degradation process of detection range of the radar among the changing electromagnetic interference was modeled based on the Normal degeneration distribution. It is helpful to predict the probability of radar to complete the specified task in the electromagnetic environment when the performance threshold is determined, which is beneficial to equipment configuration and task arrangement in actual scenes. © 2022 IEEE.

关键词： reliability

来源：评论

学校读者我要写书评

暂无评论

reliability Assessment for Complex Systems by Fusing Multi-Stage Test Information 8

Reliability Assessment for Complex Systems by Fusing Multi-S...

引用

8th International Conference on Communication, Image and Signal Processing, CCISP 2023

作者： Xue, Shufei Deng, Chenhui Lu, Wei Xiang, Jiaxin Qi, Jia Sun, Yongquan China Institute of Marine Technology & Economy Center of Quality and Reliability Beijing China China State Shipbuilding Corporation Limited Beijing China Marine Design and Research Institute of China Beijing China Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin China

ISBN: (纸本)9798350305838

To solve the problem that the reliability assessment of complex systems was difficult due to the lack of reliability information in the development stage, a hybrid Bayesian assessment method based on KL divergence was proposed in this paper. The probability distribution of the failure rate at each test stage was calculated using reliability test data from the previous development stages, which were transferred as the prior distribution in the final test stage, and then Bayesian theory was used to calculate the posterior distribution of the system's failure rate. Considering the difference between the posterior distribution of the failure rate and the probability distribution of the failure rate in the current test stage, the mixed probability distribution of the failure rate was constructed by introducing the similarity factor based on the KL divergence method, and then the integrated posterior distribution of failure rate was calculated by normalizing the mixed probability distribution of each failure rate. Based on the relationship between failure rate and reliability and MTBF, the probability distributions of the system's failure rate, reliability, and MTBF were established, and the Bayesian confidence limits of the system's reliability measures were estimated. © 2023 IEEE.

关键词： Failure rate

来源：评论

学校读者我要写书评

暂无评论

Early prediction of cycle life of supercapacitors based on GA-LSTM

Early prediction of cycle life of supercapacitors based on G...

引用

14th International Conference on Quality, reliability, Risk, Maintenance, and Safety engineering (QR2MSE 2024)

作者： Bo Liu Haoren Yu Jiawei Zou Tonggou Yang Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin People's Republic of China

ISBN: (数字)9781837241958

关键词：

来源：评论

学校读者我要写书评

暂无评论

reliability Assessment for Complex Systems by Fusing Multi-Stage Test Information

Reliability Assessment for Complex Systems by Fusing Multi-S...

引用

Communication, Image and Signal Processing (CCISP), International Conference on

作者： Shufei Xue Chenhui Deng Wei Lu Jiaxin Xiang Jia Qi Yongquan Sun Center of Quality and Reliability China Institute of Marine Technology & Economy Beijing China China State Shipbuilding Corporation Limited Beijing China Marine Design and Research Institute of China Beijing China Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin China

关键词：

来源：评论

学校读者我要写书评

暂无评论

Consistency and degradation of electrochemical double layer capacitors under calendar ageing

Consistency and degradation of electrochemical double layer ...

引用

2020 Global reliability and Prognostics and Health Management, PHM-Shanghai 2020

作者： Liu, Bo Qi, Jia Yin, Xitong Sun, Yongquan Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781728159454

Calendar ageing is one of the most important degradation behaviors for electrochemical double layer capacitors (EDLCs) in many engineering applications which severely impacts EDLC's life and reliability. EDLCs from model A, B, and C degraded under room temperature and 0 V, the capacitance and direct current resistance (DCR) of EDLC samples were measured at room temperature, based on which the consistency and degradation behaviors of samples were analyzed. From histograms and coefficients of variance, the distributions of capacitance and DCR were obtained. It can be concluded that samples' capacitance generally decreased and DCR remain relatively constant during the two years calendar ageing. The results can provide theory references for engineering application. © 2020 IEEE.

关键词： Capacitance

来源：评论

学校读者我要写书评

暂无评论

Consistency and degradation of electrochemical double layer capacitors under calendar ageing

Consistency and degradation of electrochemical double layer ...

引用

Prognostics and System Health Management Conference (PHM-Qingdao)

作者： Bo Liu Jia Qi Xitong Yin Yongquan Sun Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin China

ISBN: (数字)9781728159461

ISBN: (纸本)9781728159478

关键词： Temperature measurement Degradation Resistance Capacitors Aging reliability theory Capacitance

来源：评论

学校读者我要写书评

暂无评论

Research on the recognition method of blood circulation system based on pulse wave 3

Research on the recognition method of blood circulation syst...

引用

3rd International Conference on Biological Information and Biomedical engineering, BIBE 2019

作者： Su, Zimei Yao, Junyi Deng, Bin Shen, Zhanqiu Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin150080 China

ISBN: (纸本)9783800750269

This paper proposes a recognition method of the blood circulation system on the basis of pulse wave: the Expectation- Maximization algorithm(EM) is used to solve the Gaussian Mixture Model to obtain the pulse wave characteristic parameters by the Gaussian Mixture Model fits the pulse wave, and the pulse wave feature date set is established. The Gradient Boosting Decision Tree algorithm identifies the operating state of the blood circulation system. The following two questions are studied by using the pulse wave feature date set. 1:When the pulse wave is fitted with several Gaussian components, the blood circulation system recognition is the best. 2: Which of the pulse wave characteristic parameters represented by the Gaussian Mixture Model is most closely related to the blood circulation system operating state. © VDE VERLAG GMBH · Berlin · Offenbach.

关键词： Maximum principle

来源：评论

学校读者我要写书评

暂无评论

Failure Modes and Effects Analysis for Domestic Electric Energy Meter Using In-Service Data

引用

IOP Conference Series: Earth and Environmental Science 2018年第5期108卷

作者： Ning Li Jincheng Yang Yongquan Sun Gang Wang Jiahai Zhang Chun Liu Xinjiang Institute of State Grid Electric Power Research Wulumuqi 830000 China. Institute of Sensor and Reliability Engineering Harbin University of Science and Technology Harbin 150080 Heilongjiang China. Yantai Dongfang Wisdom Electric Co. Ltd Yantai 264000 Shandong China.

Field operation data for domestic electric energy meters are valuable for both manufactures and users, from this point of view, the main failure modes, failure numbers, installed time, and lifetime were analysed based on in-service data. The result could provide a reference for maintenance and reliability improvements.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Mud Pump System Fault Tree Analysis

Mud Pump System Fault Tree Analysis

引用

International Conference on Instrumentation, Measurement, Computer, Communication and Control (IMCCC)

作者： Dandan Hu Yongquan Sun Jian Fu Junzhong Li Enjing Zhang Institute of Sensor and Reliability Engineering of Heilongjiang Province Harbin University of Science and Technology Harbin China

Fault tree analysis is an important method in reliability engineering. In order to assess drilling mud pump reliability, system fault tree is established based on collecting its main failure modes, and then the qualit... 详细信息

ISBN: (纸本)9781479965762

关键词： Fault trees Pumps Pistons reliability engineering Probability Logic gates

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：