Pub Date : 2023-09-30DOI: 10.55579/jaec.202373.428
Pham Tan Hung
This paper investigates the free vibration analysis of the magneto-electro-elastic (MEE) sandwich plates with functionally graded carbon nanotube reinforced composite (FG-CNTRC) core using isogeometric approach (IGA). The sandwich plate is composed of the homogeneous MEE face sheets and FG-CNTRC core with four types of carbon nanotubes (CNTs) distribution, including CNT-UD, CNT-O, CNT-V and CNT-X. The external electric voltage and magnetic potential are applied in the top and bottom layers of the MEE sandwich plate. Employing the refined plate theory (RPT) and Hamilton principle, the governing equation for free vibration of the MEE sandwich plate is derived. The IGA employs Non-Uniform Rational B-Splines (NURBS) basic functions to approximate the displacement fields and the magnetic and electric potentials in the RPT model. The study examines and discusses the impact of different factors on the frequency of the MEE sandwich plate, including parameters like CNTs distributions, CNTs volume fraction, external electric voltage and magnetic potential, and the geometrical parameter of the plate. This research has revealed several important discoveries regarding the fabrication of MEE sandwich structures.
{"title":"Isogeometric vibration of the magneto-electro-elastic sandwich plate with functionally graded carbon nanotube reinforced composite core","authors":"Pham Tan Hung","doi":"10.55579/jaec.202373.428","DOIUrl":"https://doi.org/10.55579/jaec.202373.428","url":null,"abstract":"This paper investigates the free vibration analysis of the magneto-electro-elastic (MEE) sandwich plates with functionally graded carbon nanotube reinforced composite (FG-CNTRC) core using isogeometric approach (IGA). The sandwich plate is composed of the homogeneous MEE face sheets and FG-CNTRC core with four types of carbon nanotubes (CNTs) distribution, including CNT-UD, CNT-O, CNT-V and CNT-X. The external electric voltage and magnetic potential are applied in the top and bottom layers of the MEE sandwich plate. Employing the refined plate theory (RPT) and Hamilton principle, the governing equation for free vibration of the MEE sandwich plate is derived. The IGA employs Non-Uniform Rational B-Splines (NURBS) basic functions to approximate the displacement fields and the magnetic and electric potentials in the RPT model. The study examines and discusses the impact of different factors on the frequency of the MEE sandwich plate, including parameters like CNTs distributions, CNTs volume fraction, external electric voltage and magnetic potential, and the geometrical parameter of the plate. This research has revealed several important discoveries regarding the fabrication of MEE sandwich structures.","PeriodicalId":33374,"journal":{"name":"Journal of Advanced Engineering and Computation","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136280670","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 : 2023-09-30DOI: 10.55579/jaec.202373.414
Hau Huu Vo
The paper deals with an application of sliding mode control (SMC) in speed controller of field oriented controlled permanent magnet synchronous motor (PMSM) for a simplified model of an electrical vehicle. For the simplified one, zero-pole elimination method is utilized to design speed controller because of its simplicity. However, the method brings large integral constant time that makes speed response slow. In order to provide fast and robust-to-noise speed one, the SMC method is utilized to replace the zero-pole elimination (ZPE) one. Simulations at wide range of reference speed and load torque are carried out. Performance indices including steady-state error, overshoot and undershoot are employed to assess the speed controller design methods. Evaluated results confirm that the proposed SMC gives smaller performance indices than the ZPE method.
{"title":"Sliding Mode Speed Controller Design for Field Oriented Controlled PMSM Drive of an Electric Vehicle","authors":"Hau Huu Vo","doi":"10.55579/jaec.202373.414","DOIUrl":"https://doi.org/10.55579/jaec.202373.414","url":null,"abstract":"The paper deals with an application of sliding mode control (SMC) in speed controller of field oriented controlled permanent magnet synchronous motor (PMSM) for a simplified model of an electrical vehicle. For the simplified one, zero-pole elimination method is utilized to design speed controller because of its simplicity. However, the method brings large integral constant time that makes speed response slow. In order to provide fast and robust-to-noise speed one, the SMC method is utilized to replace the zero-pole elimination (ZPE) one. Simulations at wide range of reference speed and load torque are carried out. Performance indices including steady-state error, overshoot and undershoot are employed to assess the speed controller design methods. Evaluated results confirm that the proposed SMC gives smaller performance indices than the ZPE method.","PeriodicalId":33374,"journal":{"name":"Journal of Advanced Engineering and Computation","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136279547","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 : 2023-09-30DOI: 10.55579/jaec.202373.411
Md Isteak Reza, Dhrubo Haque
The paper aims to evaluate the stability of a particular section of the Buriganga River embankment, which is an economically significant river in Bangladesh. The study involved collecting soil samples from the embankment to determine its index properties, grain size distribution, organic matter content, and shear strength parameters. Laboratory tests, including direct shear and consolidated drained shear tests, were conducted with varying water content and normal load to determine the cohesion and angle of internal friction for both disturbed and undisturbed soil samples. Using XSTABL software, slope stability analysis was performed with a 1:1.5 slope based on the soil investigation results. The maximum factor of safety was found to be 1.548 for the undisturbed soil sample and 0.82 for the disturbed soil sample. The study showed that increasing soil cohesion significantly increases stability.
{"title":"SLOPE STABILITY ANALYSIS OF BURIGANGA RIVER BANK","authors":"Md Isteak Reza, Dhrubo Haque","doi":"10.55579/jaec.202373.411","DOIUrl":"https://doi.org/10.55579/jaec.202373.411","url":null,"abstract":"The paper aims to evaluate the stability of a particular section of the Buriganga River embankment, which is an economically significant river in Bangladesh. The study involved collecting soil samples from the embankment to determine its index properties, grain size distribution, organic matter content, and shear strength parameters. Laboratory tests, including direct shear and consolidated drained shear tests, were conducted with varying water content and normal load to determine the cohesion and angle of internal friction for both disturbed and undisturbed soil samples. Using XSTABL software, slope stability analysis was performed with a 1:1.5 slope based on the soil investigation results. The maximum factor of safety was found to be 1.548 for the undisturbed soil sample and 0.82 for the disturbed soil sample. The study showed that increasing soil cohesion significantly increases stability.","PeriodicalId":33374,"journal":{"name":"Journal of Advanced Engineering and Computation","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136279556","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 : 2023-09-30DOI: 10.55579/jaec.202373.417
Anh-Minh Duc Tran, Tri-Vien Vu, Quang-Dung Nguyen
This study introduces a novel approach by representing a multi-input-multi-output (MIMO) differential drive wheel mobile robot (DDWMR) using the standard state space representation for the first time. This representation facilitates the application of analysis and control system design techniques to MIMO systems. Specifically, the investigation delves into stability, controllability, observability, input-output interaction, and the relative gain array of the DDWMR model. To demonstrate the concept, the established methodology employs the conventional pole placement controller design technique to formulate a state feedback control law for trajectory tracking in the DDWMR system, utilizing both a nominal and a generalized model. The generalized model incorporates distinct parameters for the left and right motor-wheel systems, unlike the nominal model where they are assumed to be identical. Simulation results highlight that accounting for the asymmetric characteristics through the controller derived from the generalized model yields superior performance compared to the nominal model-based controller. Furthermore, the proposed model can be served as an illustrative platform for evaluating innovative MIMO control methodologies in prospective studies.
{"title":"A Study on General State Model of Differential Drive Wheeled Mobile Robots","authors":"Anh-Minh Duc Tran, Tri-Vien Vu, Quang-Dung Nguyen","doi":"10.55579/jaec.202373.417","DOIUrl":"https://doi.org/10.55579/jaec.202373.417","url":null,"abstract":"This study introduces a novel approach by representing a multi-input-multi-output (MIMO) differential drive wheel mobile robot (DDWMR) using the standard state space representation for the first time. This representation facilitates the application of analysis and control system design techniques to MIMO systems. Specifically, the investigation delves into stability, controllability, observability, input-output interaction, and the relative gain array of the DDWMR model. To demonstrate the concept, the established methodology employs the conventional pole placement controller design technique to formulate a state feedback control law for trajectory tracking in the DDWMR system, utilizing both a nominal and a generalized model. The generalized model incorporates distinct parameters for the left and right motor-wheel systems, unlike the nominal model where they are assumed to be identical. Simulation results highlight that accounting for the asymmetric characteristics through the controller derived from the generalized model yields superior performance compared to the nominal model-based controller. Furthermore, the proposed model can be served as an illustrative platform for evaluating innovative MIMO control methodologies in prospective studies.","PeriodicalId":33374,"journal":{"name":"Journal of Advanced Engineering and Computation","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136280664","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 : 2023-09-30DOI: 10.55579/jaec.202373.413
CUONG DINH TRAN, Giang Thi Tuyet Lai, Thao Minh Ca, Thong Tien Nguyen, Phuong Duy Nguyen
This paper presents a fault-tolerant control (FTC) solution to enhance the reliability and sustainability of a three-phase induction motor drive (IMD) against open circuit sensor failures (or total sensor faults). The motor speed control in the investigated drive will operate based on a field-oriented control (FOC) strategy. A typical FTC function consists of two main processes: fault detection of feedback signals from the sensors and reconfiguration of the control methods. This paper proposes using two-phase current observers to diagnose various sensor failures, and then the corresponding sensorless methods are applied to the control reconfiguration. Using MATLAB/SIMULINK software, the IMD-integrated FTC function was operated and tested under different fault conditions. Simulation results have proved that the IMD-integrated FTC function has worked stably and sustainably even in sensor failure conditions.
{"title":"A SENSOR FAULT-TOLERANT CONTROL SOLUTION BASED ON CURRENT OBSERVERS APPLIED TO THREE PHASE INDUCTION MOTOR DRIVE","authors":"CUONG DINH TRAN, Giang Thi Tuyet Lai, Thao Minh Ca, Thong Tien Nguyen, Phuong Duy Nguyen","doi":"10.55579/jaec.202373.413","DOIUrl":"https://doi.org/10.55579/jaec.202373.413","url":null,"abstract":"This paper presents a fault-tolerant control (FTC) solution to enhance the reliability and sustainability of a three-phase induction motor drive (IMD) against open circuit sensor failures (or total sensor faults). The motor speed control in the investigated drive will operate based on a field-oriented control (FOC) strategy. A typical FTC function consists of two main processes: fault detection of feedback signals from the sensors and reconfiguration of the control methods. This paper proposes using two-phase current observers to diagnose various sensor failures, and then the corresponding sensorless methods are applied to the control reconfiguration. Using MATLAB/SIMULINK software, the IMD-integrated FTC function was operated and tested under different fault conditions. Simulation results have proved that the IMD-integrated FTC function has worked stably and sustainably even in sensor failure conditions.","PeriodicalId":33374,"journal":{"name":"Journal of Advanced Engineering and Computation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136280663","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 : 2020-04-01DOI: 10.31829/2576-8506/jae2020-3(1)-109
Y. Bahtiar, Oni Yuliani, Arif Basuki, Iyus Rusmana
Face recognition is biometric technology has been awesome and popular in this century. Not only as an identification of a, it can can be used as a medium to secure the privacy data of companies and related agencies, even for someone's personal room. Various types have developed more precisely, either directly using laptops or embedded systems. Raspberry Pi is embedded medium with Picamera is able to detect the presence of a person in a determined area. The algorithm used is haarcascade with a combination of histogram of oriented gradient as database encoding. The database containing the vector of each sample from the respondent will be compared with real time picamera capture. As a result, faces can be recognized as objects and according to the owner's name. The placement of objects varies from 0.5 meters to 3 meters. Light intensity also given effect on detection process. The highest level of compatibility occurs during the day with lux of such a size.
{"title":"Pi Camera Distance Effect on Face Recognition","authors":"Y. Bahtiar, Oni Yuliani, Arif Basuki, Iyus Rusmana","doi":"10.31829/2576-8506/jae2020-3(1)-109","DOIUrl":"https://doi.org/10.31829/2576-8506/jae2020-3(1)-109","url":null,"abstract":"Face recognition is biometric technology has been awesome and popular in this century. Not only as an identification of a, it can can be used as a medium to secure the privacy data of companies and related agencies, even for someone's personal room. Various types have developed more precisely, either directly using laptops or embedded systems. Raspberry Pi is embedded medium with Picamera is able to detect the presence of a person in a determined area. The algorithm used is haarcascade with a combination of histogram of oriented gradient as database encoding. The database containing the vector of each sample from the respondent will be compared with real time picamera capture. As a result, faces can be recognized as objects and according to the owner's name. The placement of objects varies from 0.5 meters to 3 meters. Light intensity also given effect on detection process. The highest level of compatibility occurs during the day with lux of such a size.","PeriodicalId":33374,"journal":{"name":"Journal of Advanced Engineering and Computation","volume":"165 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85002482","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 : 2020-04-01DOI: 10.31829/2576-8506/jae2020-3(1)-108
Growing demand for the saving of electricity. It is based on the principle of providing light when the power is cut off. This is accomplished by the use of automatic charger which gets charged when power supply exists. When the battery is fully charged it stops charging. In case of power failure, the LED glows automatically with the supply provided by the charged battery.
{"title":"Automatic Emergency Light With Led","authors":"","doi":"10.31829/2576-8506/jae2020-3(1)-108","DOIUrl":"https://doi.org/10.31829/2576-8506/jae2020-3(1)-108","url":null,"abstract":"Growing demand for the saving of electricity. It is based on the principle of providing light when the power is cut off. This is accomplished by the use of automatic charger which gets charged when power supply exists. When the battery is fully charged it stops charging. In case of power failure, the LED glows automatically with the supply provided by the charged battery.","PeriodicalId":33374,"journal":{"name":"Journal of Advanced Engineering and Computation","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77559537","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 : 2018-07-18DOI: 10.31829/2576-8506/jae2018-1(2)-107
M. Döse, J. Silfwerbrand
The second largest cause of lung cancer is related to radon (222Rn) and its progenies in our environment. Building materials, such as concrete, contribute to the production of radon gas through the natural decay of 238U from its constituents. The Swedish Cement and Concrete Research Institute (CBI) has examined ten different concrete recipes containing an additive or Supplementary Cementious Material (SCM), such as fly ash, slag or silica and combinations thereof. The SCM´s were added in small to moderate portions and substituted the reference Portland cement (OPC). The inputs of an additive as well as a supplementary cementitious material were made as a mean to investigate their potential influence on the radon exhalation rates of the concrete as well as the radon gas diffusion length (L) that could be expected from the different recipes. Measurements were performed with an ATMOS 33 ionizing pulsation chamber. The results indicate a reduction of the exhalation rate by approximately 10-55 % depending on recipe at an RH of 75 %. The diffusion coefficients, corrected for background subtraction vary in the interval 1.1 x 10-10 – 7.6 x 10-12 m/s2. The diffusion lengths vary between 2 and 9 mm. In the case where the largest reduction of the exhalation rate is achieved, this roughly correspond to >2 mSv per year decrease in effective dose to a human. Consequently, using an additive or a SCM, as part of the mix, would be an option to effectively lower the radon gas exhalation in their initial stage of production. Secondly, the use of additives and SCM´s will contribute to a lower environmental impact (CO2).
肺癌的第二大原因与我们环境中的氡(222Rn)及其子代有关。建筑材料，如混凝土，通过其成分中的238U的自然衰变，有助于产生氡气。瑞典水泥和混凝土研究所(CBI)研究了十种不同的混凝土配方，其中含有添加剂或补充胶凝材料(SCM)，如粉煤灰、矿渣或二氧化硅及其组合。加入少量到中等份量的SCM，取代参考波特兰水泥(OPC)。作为一种手段，研究了添加剂和补充胶凝材料的输入对混凝土的氡呼出率以及不同配方预期的氡气体扩散长度(L)的潜在影响。测量用atmos33电离脉动室进行。结果表明，在75%的相对湿度下，根据配方，呼出率减少约10- 55%。经背景差校正后的扩散系数在1.1 x 10-10 - 7.6 x 10-12 m/s2范围内变化。扩散长度在2到9毫米之间变化。在最大限度地减少呼出率的情况下，这大致相当于人的有效剂量每年减少>2毫西弗。因此，使用添加剂或SCM作为混合物的一部分，将是一种在生产初期有效降低氡气呼出的选择。其次，添加剂和SCM的使用将有助于降低对环境的影响(二氧化碳)。
{"title":"Supplementary Cementitious Materials and Additives – Effective Measures to Hinder Radon in Concrete","authors":"M. Döse, J. Silfwerbrand","doi":"10.31829/2576-8506/jae2018-1(2)-107","DOIUrl":"https://doi.org/10.31829/2576-8506/jae2018-1(2)-107","url":null,"abstract":"The second largest cause of lung cancer is related to radon (222Rn) and its progenies in our environment. Building materials, such as concrete, contribute to the production of radon gas through the natural decay of 238U from its constituents. The Swedish Cement and Concrete Research Institute (CBI) has examined ten different concrete recipes containing an additive or Supplementary Cementious Material (SCM), such as fly ash, slag or silica and combinations thereof. The SCM´s were added in small to moderate portions and substituted the reference Portland cement (OPC). The inputs of an additive as well as a supplementary cementitious material were made as a mean to investigate their potential influence on the radon exhalation rates of the concrete as well as the radon gas diffusion length (L) that could be expected from the different recipes. Measurements were performed with an ATMOS 33 ionizing pulsation chamber. The results indicate a reduction of the exhalation rate by approximately 10-55 % depending on recipe at an RH of 75 %. The diffusion coefficients, corrected for background subtraction vary in the interval 1.1 x 10-10 – 7.6 x 10-12 m/s2. The diffusion lengths vary between 2 and 9 mm. In the case where the largest reduction of the exhalation rate is achieved, this roughly correspond to >2 mSv per year decrease in effective dose to a human. Consequently, using an additive or a SCM, as part of the mix, would be an option to effectively lower the radon gas exhalation in their initial stage of production. Secondly, the use of additives and SCM´s will contribute to a lower environmental impact (CO2).","PeriodicalId":33374,"journal":{"name":"Journal of Advanced Engineering and Computation","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89942269","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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