Pub Date : 2023-11-08DOI: 10.37394/23203.2023.18.38
Hafid Oubouaddi, Adil Brouri, Abdelmalek Ouannou, Fatima Ezzahra El Mansouri, Ali Bouklata, Laila Gadi
A Switched Reluctance Machine (SRM) is an electric motor that operates based on the principle of magnetic reluctance. In addition, SRMs have several advantages over other types of electric motors. However, SRMs also have some disadvantages. They can produce high noise and vibration levels, especially at high speeds. This paper describes the torque and speed controller for SRM using two techniques, Particle Swarm Optimization (PSO) and Ant Colony Optimization (ACO) combined with a PI corrector. The conventional PI controller is nowadays used in most engineering, being acknowledged for their ability to give up superior control in power electronic systems. Moreover, finding appropriate values for the PI controller is not easy. A solution based on ACO and PSO is used to overcome this problem and simplify tuning the PI controller parameters. Simulation in MATLAB-Simulink was used to demonstrate the effectiveness of the suggested controllers.
{"title":"Switched Reluctance Motor Speed and Torque Control using ACO and PSO Algorithms","authors":"Hafid Oubouaddi, Adil Brouri, Abdelmalek Ouannou, Fatima Ezzahra El Mansouri, Ali Bouklata, Laila Gadi","doi":"10.37394/23203.2023.18.38","DOIUrl":"https://doi.org/10.37394/23203.2023.18.38","url":null,"abstract":"A Switched Reluctance Machine (SRM) is an electric motor that operates based on the principle of magnetic reluctance. In addition, SRMs have several advantages over other types of electric motors. However, SRMs also have some disadvantages. They can produce high noise and vibration levels, especially at high speeds. This paper describes the torque and speed controller for SRM using two techniques, Particle Swarm Optimization (PSO) and Ant Colony Optimization (ACO) combined with a PI corrector. The conventional PI controller is nowadays used in most engineering, being acknowledged for their ability to give up superior control in power electronic systems. Moreover, finding appropriate values for the PI controller is not easy. A solution based on ACO and PSO is used to overcome this problem and simplify tuning the PI controller parameters. Simulation in MATLAB-Simulink was used to demonstrate the effectiveness of the suggested controllers.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"21 24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135390322","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 : 2023-11-08DOI: 10.37394/23203.2023.18.37
Bouafi Nadia, Merabti Nesrine Lamya, Rezzoug Imad
We present in our work the steps of the Hilbert Uniqueness Method (HUM) and characterization of the low regret and no regret control. At the end of this article, we compare these methods.
{"title":"Comparison Between the two HUM and No-regret Control Methods","authors":"Bouafi Nadia, Merabti Nesrine Lamya, Rezzoug Imad","doi":"10.37394/23203.2023.18.37","DOIUrl":"https://doi.org/10.37394/23203.2023.18.37","url":null,"abstract":"We present in our work the steps of the Hilbert Uniqueness Method (HUM) and characterization of the low regret and no regret control. At the end of this article, we compare these methods.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"33 17","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391151","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 : 2023-10-27DOI: 10.37394/23203.2023.18.34
M. I. Garcia-Planas
In this work, the controllability of a class of multi-agent linear systems that are interconnected via communication channels is studied. Condition for controllability have been presented and described in terms of the topology of the followers agents, in the case where the followers agents have the same linear dynamics.
{"title":"Controllability of Leader-following Multi-agent Systems","authors":"M. I. Garcia-Planas","doi":"10.37394/23203.2023.18.34","DOIUrl":"https://doi.org/10.37394/23203.2023.18.34","url":null,"abstract":"In this work, the controllability of a class of multi-agent linear systems that are interconnected via communication channels is studied. Condition for controllability have been presented and described in terms of the topology of the followers agents, in the case where the followers agents have the same linear dynamics.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"46 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136317749","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 : 2023-10-27DOI: 10.37394/23203.2023.18.35
Mario Lefebvre
The problem of reducing the number of customers waiting for service in a modifiedM/G/k queueing model is considered. We assume that the optimizer can decide how many servers are working at any time instant. The optimization problem ends as soon as the objective has been achieved or a time limit has been reached. Cases when dynamic programming can be used to determine the optimal control even if the service time is not exponentially distributed are presented.
{"title":"Reducing the Size of a Waiting Line Optimally","authors":"Mario Lefebvre","doi":"10.37394/23203.2023.18.35","DOIUrl":"https://doi.org/10.37394/23203.2023.18.35","url":null,"abstract":"The problem of reducing the number of customers waiting for service in a modifiedM/G/k queueing model is considered. We assume that the optimizer can decide how many servers are working at any time instant. The optimization problem ends as soon as the objective has been achieved or a time limit has been reached. Cases when dynamic programming can be used to determine the optimal control even if the service time is not exponentially distributed are presented.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262719","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 : 2023-10-27DOI: 10.37394/23203.2023.18.36
Igor Astrov
High-quality computer control of autonomous vehicles in various environments is a priority for cyber-physical systems (CPS), Industry 4.0, and the global economy as a whole. The paper discusses the linearized control model of a Self-Driving Car (SDC) with a weight of 1160 kg. For safe maneuvering with obstacle avoidance, we employ an optimal control by Linear Quadratic Regulator (LQR) using a Simulink/MATLAB environment that is capable to demonstrate the satisfiability of LQR control for this maneuver using a 3D simulation environment under changing urban conditions in a smart city. This controller is easy for engineering implementation.
{"title":"A Model-Based Control of Self-Driving Car Trajectory for Lanes Change Maneuver in a Smart City","authors":"Igor Astrov","doi":"10.37394/23203.2023.18.36","DOIUrl":"https://doi.org/10.37394/23203.2023.18.36","url":null,"abstract":"High-quality computer control of autonomous vehicles in various environments is a priority for cyber-physical systems (CPS), Industry 4.0, and the global economy as a whole. The paper discusses the linearized control model of a Self-Driving Car (SDC) with a weight of 1160 kg. For safe maneuvering with obstacle avoidance, we employ an optimal control by Linear Quadratic Regulator (LQR) using a Simulink/MATLAB environment that is capable to demonstrate the satisfiability of LQR control for this maneuver using a 3D simulation environment under changing urban conditions in a smart city. This controller is easy for engineering implementation.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262559","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 : 2023-10-27DOI: 10.37394/23203.2023.18.33
Marwa Mohamed Ismaeel, Wasan Ajeel Ahmood
In our paper, we are used here two methods to solve non-linear differential equations from a higher order: the first-one is domain decomposition method is used to estimate the Maxi. Abso. Trunc. Error of Adomain series and the second-one proposed numerical (PNM), these types of equations are studied. When we use these methods, an exclusive solution will be provided, and the approximate analyses of this method applied to these types of equations will be overlooked, and the maximum error that has been informed to solve the ADOMIANS series will be classified. A digital example is prepared clarify the impact method provided and significant following of these equations in our paper is Bagley-Torvik equation.
{"title":"Solution of Multi-Dimensional Non-linear Fractional Differential Equations of Higher Orders","authors":"Marwa Mohamed Ismaeel, Wasan Ajeel Ahmood","doi":"10.37394/23203.2023.18.33","DOIUrl":"https://doi.org/10.37394/23203.2023.18.33","url":null,"abstract":"In our paper, we are used here two methods to solve non-linear differential equations from a higher order: the first-one is domain decomposition method is used to estimate the Maxi. Abso. Trunc. Error of Adomain series and the second-one proposed numerical (PNM), these types of equations are studied. When we use these methods, an exclusive solution will be provided, and the approximate analyses of this method applied to these types of equations will be overlooked, and the maximum error that has been informed to solve the ADOMIANS series will be classified. A digital example is prepared clarify the impact method provided and significant following of these equations in our paper is Bagley-Torvik equation.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"233 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136261717","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 : 2023-10-17DOI: 10.37394/23203.2023.18.30
Tomasz Praczyk, Piotr Szymak
The paper presents the application of an evolutionary recurrent neural network to control the swarm of underwater vehicles. In the swarm, one vehicle is the leader and the others are followers. The leader leads the swarm along a predefined trajectory without regard for the followers while the followers follow the leader and avoid collisions with all other vehicles. Avoiding collisions by the swarm with external obstacles is done by changing the depth. The leader is responsible for detecting the obstacles and informing all the followers about the need to change the depth. To follow the leader, the followers use the information about the distance to it. Directional information is unavailable to them. To avoid collisions inside the swarm, the followers use shortrange sensors.
{"title":"Neural Swarm Control Algorithm for Underwater Vehicles","authors":"Tomasz Praczyk, Piotr Szymak","doi":"10.37394/23203.2023.18.30","DOIUrl":"https://doi.org/10.37394/23203.2023.18.30","url":null,"abstract":"The paper presents the application of an evolutionary recurrent neural network to control the swarm of underwater vehicles. In the swarm, one vehicle is the leader and the others are followers. The leader leads the swarm along a predefined trajectory without regard for the followers while the followers follow the leader and avoid collisions with all other vehicles. Avoiding collisions by the swarm with external obstacles is done by changing the depth. The leader is responsible for detecting the obstacles and informing all the followers about the need to change the depth. To follow the leader, the followers use the information about the distance to it. Directional information is unavailable to them. To avoid collisions inside the swarm, the followers use shortrange sensors.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"111 3S 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136033508","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 : 2023-10-17DOI: 10.37394/23203.2023.18.32
Chontita Rattanakul
Apart from the effects on the lungs, COVID-19 caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) also has effects on bone metabolism including the bone remodelling process. The bone remodelling process involves bone formation by bone-forming cells (osteoblasts) and bone resorption by bone-resorbing cells (osteoclasts). The infection with SARS-Cov-2 decreases the inhibiting effects of Angiotensin-converting enzyme 2 (ACE2) on osteoclastic reproduction and inhibits the osteogenic ability of osteoblasts which might lead to the imbalance in the bone remodeling process. In this study, we modify the system of differential equations to investigate the effects of Covid-19 on bone formation and bone resorption. The geometric singular perturbation method is utilized to analyze the modified model theoretically. To illustrate the theoretical results, numerical investigations are also demonstrated. The results indicate that the oscillations in the numbers of osteoclastic cells and osteoblastic cells observed in the clinical evidence could still be expected when the effects of SARS-Cov-2 are incorporated, however, the oscillations occur at the higher level of the number of osteoclasts and hence more bone loss might occur when infected with Covid-19.
{"title":"Bone Remodeling Process and Covid-19: A Modelling Approach","authors":"Chontita Rattanakul","doi":"10.37394/23203.2023.18.32","DOIUrl":"https://doi.org/10.37394/23203.2023.18.32","url":null,"abstract":"Apart from the effects on the lungs, COVID-19 caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) also has effects on bone metabolism including the bone remodelling process. The bone remodelling process involves bone formation by bone-forming cells (osteoblasts) and bone resorption by bone-resorbing cells (osteoclasts). The infection with SARS-Cov-2 decreases the inhibiting effects of Angiotensin-converting enzyme 2 (ACE2) on osteoclastic reproduction and inhibits the osteogenic ability of osteoblasts which might lead to the imbalance in the bone remodeling process. In this study, we modify the system of differential equations to investigate the effects of Covid-19 on bone formation and bone resorption. The geometric singular perturbation method is utilized to analyze the modified model theoretically. To illustrate the theoretical results, numerical investigations are also demonstrated. The results indicate that the oscillations in the numbers of osteoclastic cells and osteoblastic cells observed in the clinical evidence could still be expected when the effects of SARS-Cov-2 are incorporated, however, the oscillations occur at the higher level of the number of osteoclasts and hence more bone loss might occur when infected with Covid-19.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135994990","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 : 2023-10-17DOI: 10.37394/23203.2023.18.31
Altug Iftar
An important problem in control engineering is to design a controller to achieve robust asymptotic tracking of certain reference signals despite certain disturbance inputs. In the present work, this problem, which is known as the robust servomechanism problem, is considered for decentralized linear time-invariant (LTI) neutral systems with distributed time-delay. However, the system is also allowed to have discrete time-delays besides distributed time-delays. The reference signals and the disturbance input are assumed to satisfy a LTI neutral delay-differential equation with distributed and/or discrete time-delays. The necessary and sufficient conditions for the existence of a controller which solves this problem are derived. The structure of this controller (when it exists) is also presented.
{"title":"Robust Tracking and Disturbance Rejection for Decentralized Neutral Distributed-time-delay Systems","authors":"Altug Iftar","doi":"10.37394/23203.2023.18.31","DOIUrl":"https://doi.org/10.37394/23203.2023.18.31","url":null,"abstract":"An important problem in control engineering is to design a controller to achieve robust asymptotic tracking of certain reference signals despite certain disturbance inputs. In the present work, this problem, which is known as the robust servomechanism problem, is considered for decentralized linear time-invariant (LTI) neutral systems with distributed time-delay. However, the system is also allowed to have discrete time-delays besides distributed time-delays. The reference signals and the disturbance input are assumed to satisfy a LTI neutral delay-differential equation with distributed and/or discrete time-delays. The necessary and sufficient conditions for the existence of a controller which solves this problem are derived. The structure of this controller (when it exists) is also presented.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135992958","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 : 2023-10-16DOI: 10.37394/23202.2023.22.74
Miyazaki Shuuji, Zhi-Qiang Liao, Peng Chen
As a compound fault of bearing is characterized by complexity, disproportion, and interaction, its fault diagnostic accuracy tends to decline sharply. To solve this problem, the present study proposes a transient fault-signal extraction scheme for bearing compound fault intelligent diagnosis. First, the single fault vibration and compound fault vibration signals are transformed into the time-frequency domain by wavelet transform. Then, according to the normal condition signal, the transient fault signal of the single signal and compound signal is extracted through the positive k sigma principle. Next, the single fault signal symptom parameters are calculated to build the fault diagnostic model. Thereafter, the symptom parameters of the extracted compound fault transient signal are brought into the diagnostic model to obtain the model output result. Finally, according to the developed fault diagnosis discrimination criterion, the method can diagnose the compound fault successfully. The effectiveness of the proposed method is validated by bearing fault vibration signals under various conditions. The results show that the diagnostic method has superior performance in intelligently diagnosing the bearing compound fault.
{"title":"A Transient Fault-signal Extraction Scheme for Bearing Compound Fault Intelligent Diagnosis based on Vibration Signals","authors":"Miyazaki Shuuji, Zhi-Qiang Liao, Peng Chen","doi":"10.37394/23202.2023.22.74","DOIUrl":"https://doi.org/10.37394/23202.2023.22.74","url":null,"abstract":"As a compound fault of bearing is characterized by complexity, disproportion, and interaction, its fault diagnostic accuracy tends to decline sharply. To solve this problem, the present study proposes a transient fault-signal extraction scheme for bearing compound fault intelligent diagnosis. First, the single fault vibration and compound fault vibration signals are transformed into the time-frequency domain by wavelet transform. Then, according to the normal condition signal, the transient fault signal of the single signal and compound signal is extracted through the positive k sigma principle. Next, the single fault signal symptom parameters are calculated to build the fault diagnostic model. Thereafter, the symptom parameters of the extracted compound fault transient signal are brought into the diagnostic model to obtain the model output result. Finally, according to the developed fault diagnosis discrimination criterion, the method can diagnose the compound fault successfully. The effectiveness of the proposed method is validated by bearing fault vibration signals under various conditions. The results show that the diagnostic method has superior performance in intelligently diagnosing the bearing compound fault.","PeriodicalId":39422,"journal":{"name":"WSEAS Transactions on Systems and Control","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136115156","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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