Pub Date : 2023-01-01DOI: 10.1504/ijmic.2023.133429
Michael T. Todinov
New results related to the reliability of common systems with interchangeable redundancies at a component level have been obtained by deriving and interpreting a new algebraic inequality. It is shown that for systems with interchangeable redundant components, the system reliability can be increased by asymmetrical arrangement of the redundant components. Maximum system reliability is obtained by arranging the main components in ascending order of their probabilities of failure while the redundant components are arranged in descending order of their probabilities of failure. For the inequality of the additive ratios, a novel probabilistic interpretation is provided which resulted in a powerful strategy for improving the probability of an event occurring with mutually exclusive events. Using this result, a counter-intuitive strategy has been developed for improving the probability of purchasing a reliable product from a set of suppliers.
{"title":"Improving system reliability and the probability of selecting reliable components by interpreting algebraic inequalities","authors":"Michael T. Todinov","doi":"10.1504/ijmic.2023.133429","DOIUrl":"https://doi.org/10.1504/ijmic.2023.133429","url":null,"abstract":"New results related to the reliability of common systems with interchangeable redundancies at a component level have been obtained by deriving and interpreting a new algebraic inequality. It is shown that for systems with interchangeable redundant components, the system reliability can be increased by asymmetrical arrangement of the redundant components. Maximum system reliability is obtained by arranging the main components in ascending order of their probabilities of failure while the redundant components are arranged in descending order of their probabilities of failure. For the inequality of the additive ratios, a novel probabilistic interpretation is provided which resulted in a powerful strategy for improving the probability of an event occurring with mutually exclusive events. Using this result, a counter-intuitive strategy has been developed for improving the probability of purchasing a reliable product from a set of suppliers.","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135497195","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}
Pub Date : 2023-01-01DOI: 10.1504/ijmic.2023.10057172
M. E. H. Charaf, A. Addaim, Abdessalam Ait Madi, Anass Deroussi, Imam Alihamidi, L. Charaf
{"title":"An adaptive distributed access control model for IoT and fog computing environments","authors":"M. E. H. Charaf, A. Addaim, Abdessalam Ait Madi, Anass Deroussi, Imam Alihamidi, L. Charaf","doi":"10.1504/ijmic.2023.10057172","DOIUrl":"https://doi.org/10.1504/ijmic.2023.10057172","url":null,"abstract":"","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"51 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79388774","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}
Pub Date : 2023-01-01DOI: 10.1504/ijmic.2023.10059037
Xuemei Luo, Yuancheng Fan, Jing Yang, Xi Chen, Tao Qin, Wei Wei
{"title":"A data transmission protocol for WSN based on multi-strategy improved whale optimisation algorithm","authors":"Xuemei Luo, Yuancheng Fan, Jing Yang, Xi Chen, Tao Qin, Wei Wei","doi":"10.1504/ijmic.2023.10059037","DOIUrl":"https://doi.org/10.1504/ijmic.2023.10059037","url":null,"abstract":"","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135400347","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}
{"title":"Mathematical modelling, bifurcation analysis, circuit design and FPGA implementation of a 5D hyperchaotic weather fluctuation model with a line of equilibrium points","authors":"Samy Abdelwahab Safaan, Ciro Fabian Bermudez Marquez, Aceng Sambas, Irene M. Moroz, Esteban Tlelo Cuautle, Sundarapandian Vaidyanathan","doi":"10.1504/ijmic.2023.10059035","DOIUrl":"https://doi.org/10.1504/ijmic.2023.10059035","url":null,"abstract":"","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135400355","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}
Pub Date : 2023-01-01DOI: 10.1504/ijmic.2023.133171
Kumaril Buts, Lillie Dewan, M.P.R. Prasad
{"title":"PI-based hybrid control for load-stress management of a fuel cell-based hybrid power system","authors":"Kumaril Buts, Lillie Dewan, M.P.R. Prasad","doi":"10.1504/ijmic.2023.133171","DOIUrl":"https://doi.org/10.1504/ijmic.2023.133171","url":null,"abstract":"","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135784047","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}
Pub Date : 2023-01-01DOI: 10.1504/ijmic.2023.133433
Xiufang Zhang, Yujun Zhu, Shuai Wang
{"title":"Unmanned aerial vehicles for touristry purpose - a comprehensive survey on its security and safety aspects","authors":"Xiufang Zhang, Yujun Zhu, Shuai Wang","doi":"10.1504/ijmic.2023.133433","DOIUrl":"https://doi.org/10.1504/ijmic.2023.133433","url":null,"abstract":"","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135497728","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}
Pub Date : 2023-01-01DOI: 10.1504/ijmic.2023.128763
Heman Shamachurn, Sayed Z. Sayed Hassen
The development of models is a major barrier to the fast and widespread adoption of model predictive control for building HVAC systems. This paper proposes the subspace identification technique, refined through the prediction error method, to quickly obtain a model for the accurate indoor temperature prediction, even with little identification data, even in the presence of large unmeasured disturbances and noisy identification data, and even using data which was collected during the regular HVAC operation of a building. The identification issues associated with grey-box models were thoroughly investigated. In particular, the development of a grey-box model was found to be a complex, lengthy and computationally intensive process, even for a single-zone building, and the models were not physically meaningful. The proposed method was found to be much easier and faster, with a potential for direct practical application. Analysis on experimental data from an existing building provided promising results.
{"title":"Development of control-oriented models for a building under regular heating, ventilation and air-conditioning operation - a comparative simulation study and an experimental validation","authors":"Heman Shamachurn, Sayed Z. Sayed Hassen","doi":"10.1504/ijmic.2023.128763","DOIUrl":"https://doi.org/10.1504/ijmic.2023.128763","url":null,"abstract":"The development of models is a major barrier to the fast and widespread adoption of model predictive control for building HVAC systems. This paper proposes the subspace identification technique, refined through the prediction error method, to quickly obtain a model for the accurate indoor temperature prediction, even with little identification data, even in the presence of large unmeasured disturbances and noisy identification data, and even using data which was collected during the regular HVAC operation of a building. The identification issues associated with grey-box models were thoroughly investigated. In particular, the development of a grey-box model was found to be a complex, lengthy and computationally intensive process, even for a single-zone building, and the models were not physically meaningful. The proposed method was found to be much easier and faster, with a potential for direct practical application. Analysis on experimental data from an existing building provided promising results.","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135470409","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}
Pub Date : 2023-01-01DOI: 10.1504/ijmic.2023.133434
Achu Govind K.R., Subhasish Mahapatra
This paper uses frequency domain specifications to design a decentralised PI/PID controller for a benchmark continuously stirred tank reactor (CSTR) industrial system. The primary objective of the work is to control the parameters of CSTR within the operating regions by regulating the temperature and reactor concentration. The decentralised control is designed by considering a decoupled CSTR system in which the diagonal elements are the FOPDT systems. Besides, decouplers are designed to reduce the loop interactions. The controllers are designed based on the frequency domain specifications such as gain margin and phase margin. The robust stability is analysed by considering multiplicative input and output uncertainties. A concise comparison is made between the proposed technique and existing methods to show the efficacious behaviour of the developed control algorithm. It is envisaged that the proposed control algorithm exhibits better servo and regulatory response compared to the existing techniques.
{"title":"Design of decentralised PI/PID control algorithm for a benchmark continuously stirred tank reactor system using frequency domain specifications","authors":"Achu Govind K.R., Subhasish Mahapatra","doi":"10.1504/ijmic.2023.133434","DOIUrl":"https://doi.org/10.1504/ijmic.2023.133434","url":null,"abstract":"This paper uses frequency domain specifications to design a decentralised PI/PID controller for a benchmark continuously stirred tank reactor (CSTR) industrial system. The primary objective of the work is to control the parameters of CSTR within the operating regions by regulating the temperature and reactor concentration. The decentralised control is designed by considering a decoupled CSTR system in which the diagonal elements are the FOPDT systems. Besides, decouplers are designed to reduce the loop interactions. The controllers are designed based on the frequency domain specifications such as gain margin and phase margin. The robust stability is analysed by considering multiplicative input and output uncertainties. A concise comparison is made between the proposed technique and existing methods to show the efficacious behaviour of the developed control algorithm. It is envisaged that the proposed control algorithm exhibits better servo and regulatory response compared to the existing techniques.","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135783826","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}
Pub Date : 2023-01-01DOI: 10.1504/ijmic.2023.133435
Xi Chen, Tao Qin, N.A. Wei, Yuancheng Fan, Xuemei Luo, Jing Yang
{"title":"A data transmission protocol for WSN based on multi-strategy improved whale optimisation algorithm","authors":"Xi Chen, Tao Qin, N.A. Wei, Yuancheng Fan, Xuemei Luo, Jing Yang","doi":"10.1504/ijmic.2023.133435","DOIUrl":"https://doi.org/10.1504/ijmic.2023.133435","url":null,"abstract":"","PeriodicalId":46456,"journal":{"name":"International Journal of Modelling Identification and Control","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135497206","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}
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