Pub Date : 2020-09-23DOI: 10.23919/SICE48898.2020.9240301
N. D. Tuyen, Le Viet Thinh, Vu Xuan Son Huu
Partial shading conditions (PSCs) is the most common phenomenon among photovoltaic (PV) modules of a PV array, causing significant power losses in the PV array as well as reducing lifespan of the PV array. Rearranging the interconnection of PV modules of a PV array can equalize the irradiance in each row of PV modules, which improves the output power of the PV array. This paper proposes a simple and effective method to reconfigure the interconnection of a large-scale PV array. The power-voltage (P-V) characteristic of a PV array is drawn under four typical shading patterns, short narrow, short wide, long narrow, and long wide. The effectiveness of the rearrangement method is verified by an investigation conducted on a polycrystalline PV panel. Since the power loss is minimized in a range from 3.80 % to 10.59 % in four considering cases, proposed method could be a promising solution in reducing the effects of PSCs on the PV arrays.
{"title":"On the Sudoku-based Arrangement in Reconfiguring a Large-scale Photovoltaic Array","authors":"N. D. Tuyen, Le Viet Thinh, Vu Xuan Son Huu","doi":"10.23919/SICE48898.2020.9240301","DOIUrl":"https://doi.org/10.23919/SICE48898.2020.9240301","url":null,"abstract":"Partial shading conditions (PSCs) is the most common phenomenon among photovoltaic (PV) modules of a PV array, causing significant power losses in the PV array as well as reducing lifespan of the PV array. Rearranging the interconnection of PV modules of a PV array can equalize the irradiance in each row of PV modules, which improves the output power of the PV array. This paper proposes a simple and effective method to reconfigure the interconnection of a large-scale PV array. The power-voltage (P-V) characteristic of a PV array is drawn under four typical shading patterns, short narrow, short wide, long narrow, and long wide. The effectiveness of the rearrangement method is verified by an investigation conducted on a polycrystalline PV panel. Since the power loss is minimized in a range from 3.80 % to 10.59 % in four considering cases, proposed method could be a promising solution in reducing the effects of PSCs on the PV arrays.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130754467","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 : 2019-09-01DOI: 10.23919/SICE.2019.8859855
V. Khoa, S. Takayama
Topology Control (TC) is one of the most important techniques in Wireless Sensor Network (WSN). As WSN is customized base on application, the algorithm for TC can be designed to suit the target system. However, the main purpose of TC is to reduce the resource consumption and optimize the data transmission efficiency. In this paper, we focus on controlling the communication between nodes in the network to create desired topology. We aim to create a more flexible connection between nodes in both no-landslide situation, and emergency when landslide occurs in the monitoring area.
{"title":"Topology Control for Wireless Sensor Network in Landslide Monitoring","authors":"V. Khoa, S. Takayama","doi":"10.23919/SICE.2019.8859855","DOIUrl":"https://doi.org/10.23919/SICE.2019.8859855","url":null,"abstract":"Topology Control (TC) is one of the most important techniques in Wireless Sensor Network (WSN). As WSN is customized base on application, the algorithm for TC can be designed to suit the target system. However, the main purpose of TC is to reduce the resource consumption and optimize the data transmission efficiency. In this paper, we focus on controlling the communication between nodes in the network to create desired topology. We aim to create a more flexible connection between nodes in both no-landslide situation, and emergency when landslide occurs in the monitoring area.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116652282","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 : 2015-10-01DOI: 10.1109/SICE.2015.7285499
L. Ota, Hironori Hashiguchi, Ken-ichiro Ogawa, S. Orimo, Y. Miyake
We have developed Walk-Mate (WM) training using interactive rhythmic auditory cue, which is a new rehabilitation method concerning gait rhythm. Also, we have proposed the new evaluation method for gait rhythm generation disorders, which is often observed in Parkinson's disease (PD) patients. However, the recovery process by rehabilitation for gait rhythm was not yet evaluated from a viewpoint of gait rhythm generation disorders. In this paper, we aim to evaluate the recovery process by rehabilitation for gait rhythm by evaluation method for gait rhythm generation disorders in PD patients. For this purpose, we evaluated the effect of WM training compared to conventional Rhythmic Auditory Stimulation (RAS) training using fixed-tempo rhythmic auditory cue. To evaluate the rehabilitation effect, we hypothesized a transition probability model of discrete states in views of gait rhythm generation disorders. In detail, the state transition probability matrices of WM training, was compared with the probability matrices of RAS training. Thirty-one PD patients walked for approximately 2 minutes. We used the gait states constructed in previous study to evaluate the disease severity for gait rhythm generation disorders. Then we made state transition probability matrices from pre-WM training to post-WM training, and that from pre-RAS training to post-RAS training. The result showed the difference in effect between two training. Specifically, the WM training showed better gait state transition of the patients in severer states of gait rhythm generation disorders, compared to the RAS training. This suggests that this transition model is useful to identify the appropriate treatment of gait rhythm generation disorders.
{"title":"Gait state transition by gait training using interactive rhythmic auditory cue in development process of gait rhythm generation disorders","authors":"L. Ota, Hironori Hashiguchi, Ken-ichiro Ogawa, S. Orimo, Y. Miyake","doi":"10.1109/SICE.2015.7285499","DOIUrl":"https://doi.org/10.1109/SICE.2015.7285499","url":null,"abstract":"We have developed Walk-Mate (WM) training using interactive rhythmic auditory cue, which is a new rehabilitation method concerning gait rhythm. Also, we have proposed the new evaluation method for gait rhythm generation disorders, which is often observed in Parkinson's disease (PD) patients. However, the recovery process by rehabilitation for gait rhythm was not yet evaluated from a viewpoint of gait rhythm generation disorders. In this paper, we aim to evaluate the recovery process by rehabilitation for gait rhythm by evaluation method for gait rhythm generation disorders in PD patients. For this purpose, we evaluated the effect of WM training compared to conventional Rhythmic Auditory Stimulation (RAS) training using fixed-tempo rhythmic auditory cue. To evaluate the rehabilitation effect, we hypothesized a transition probability model of discrete states in views of gait rhythm generation disorders. In detail, the state transition probability matrices of WM training, was compared with the probability matrices of RAS training. Thirty-one PD patients walked for approximately 2 minutes. We used the gait states constructed in previous study to evaluate the disease severity for gait rhythm generation disorders. Then we made state transition probability matrices from pre-WM training to post-WM training, and that from pre-RAS training to post-RAS training. The result showed the difference in effect between two training. Specifically, the WM training showed better gait state transition of the patients in severer states of gait rhythm generation disorders, compared to the RAS training. This suggests that this transition model is useful to identify the appropriate treatment of gait rhythm generation disorders.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127592224","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 : 2015-10-01DOI: 10.1109/SICE.2015.7285426
T. Yamazaki, T. Sugiyama
In order to protect fruits, preharvest bagging is usually used for fruit growth including apples, peaches, grapes and pears. Characteristic and performance of the fruit bag used for the preharvest bagging have an important role to improve quality of the fruits. Effects of preharvest bagging have been studied by surveying postharvested fruits. However, studies on the inner-bag environment including temperature and humidity have been hardly studied during fruit growing so far. In this paper, it is proposed to measure temperature and humidity inside different fruit bags to clarify difference of the bags. Targeting at pears ‘Le Lectier’, a small sensing logger is used to carry out the measurement for three different types of bags. Based on 130 days continuous measurement, the difference of the bags are figured and visualized.
{"title":"Temperature and humidity measurement inside pear (Pyrus Communis) bags during preharvest bagging","authors":"T. Yamazaki, T. Sugiyama","doi":"10.1109/SICE.2015.7285426","DOIUrl":"https://doi.org/10.1109/SICE.2015.7285426","url":null,"abstract":"In order to protect fruits, preharvest bagging is usually used for fruit growth including apples, peaches, grapes and pears. Characteristic and performance of the fruit bag used for the preharvest bagging have an important role to improve quality of the fruits. Effects of preharvest bagging have been studied by surveying postharvested fruits. However, studies on the inner-bag environment including temperature and humidity have been hardly studied during fruit growing so far. In this paper, it is proposed to measure temperature and humidity inside different fruit bags to clarify difference of the bags. Targeting at pears ‘Le Lectier’, a small sensing logger is used to carry out the measurement for three different types of bags. Based on 130 days continuous measurement, the difference of the bags are figured and visualized.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133138166","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 : 2015-10-01DOI: 10.1109/SICE.2015.7285333
F. Kojima, T. Usami
This paper is concerned with uncertain qualifications of resonance wavenumbers of composite dielectric materials. The relative permittivity with a single resonance is described by the Lorentz model. Taking into account that the reflection coefficents indirectly measurable, the signal response model is given by a complex reflectance at the interface between free space and a dielectric medium. Our inverse problem is then formulated for estimating the resonance wavenumbers under noisy observations. Applying stochastic Galerkin method to the associated likelihood ratio, an approximate posteriori function is derived. A Bayesian inversion of resonance wavenumbers is implemented with the aid of the stochastic algorithm based on Hamiltonian Monte Carlo method.
{"title":"Estimation of dielectric parameters in composite materials using stochastic Galerkin method","authors":"F. Kojima, T. Usami","doi":"10.1109/SICE.2015.7285333","DOIUrl":"https://doi.org/10.1109/SICE.2015.7285333","url":null,"abstract":"This paper is concerned with uncertain qualifications of resonance wavenumbers of composite dielectric materials. The relative permittivity with a single resonance is described by the Lorentz model. Taking into account that the reflection coefficents indirectly measurable, the signal response model is given by a complex reflectance at the interface between free space and a dielectric medium. Our inverse problem is then formulated for estimating the resonance wavenumbers under noisy observations. Applying stochastic Galerkin method to the associated likelihood ratio, an approximate posteriori function is derived. A Bayesian inversion of resonance wavenumbers is implemented with the aid of the stochastic algorithm based on Hamiltonian Monte Carlo method.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130716469","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 : 2015-10-01DOI: 10.1109/SICE.2015.7285417
Takamitsu Matsubara, Kenji Sugimoto
In this paper, we consider a hand motion recognition problem using surface Electromyography signals (EMGs). Most previous studies commonly assume that the relationship between the EMG signal (or feature) and the motion intention is invariant. However, such an assumption cannot be satisfied for hand motion recognition if the user changes the posture of the arm (e.g., pronation angle) that affects on the relative positions of the sensors from the target muscles. We propose a robust motion classifier for such a postural change using pattern matching techniques. The effectiveness of our proposed method is validated by experiments with five subjects.
{"title":"Hand motion recognition with postural changes using surface EMG signals","authors":"Takamitsu Matsubara, Kenji Sugimoto","doi":"10.1109/SICE.2015.7285417","DOIUrl":"https://doi.org/10.1109/SICE.2015.7285417","url":null,"abstract":"In this paper, we consider a hand motion recognition problem using surface Electromyography signals (EMGs). Most previous studies commonly assume that the relationship between the EMG signal (or feature) and the motion intention is invariant. However, such an assumption cannot be satisfied for hand motion recognition if the user changes the posture of the arm (e.g., pronation angle) that affects on the relative positions of the sensors from the target muscles. We propose a robust motion classifier for such a postural change using pattern matching techniques. The effectiveness of our proposed method is validated by experiments with five subjects.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123977873","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 : 2015-10-01DOI: 10.1109/SICE.2015.7285509
Daichi Ishihara, K. Kikuchi, Kazuya Yokoi, D. Morioka
In this study, we have developed a variable stiffness ionic polymer-metal composite (IPMC) integrated with a shape memory polymer (SMP) the stiffness of which is controlled by environmental temperature. The experimental results show that the proposed actuator enabled to control and maintain its deformation by changing the stiffness. Therefore, the usability of the proposed actuator was confirmed.
{"title":"Development of a prototype of variable stiffness ion conductive polymer actuator with a shape memory polymer","authors":"Daichi Ishihara, K. Kikuchi, Kazuya Yokoi, D. Morioka","doi":"10.1109/SICE.2015.7285509","DOIUrl":"https://doi.org/10.1109/SICE.2015.7285509","url":null,"abstract":"In this study, we have developed a variable stiffness ionic polymer-metal composite (IPMC) integrated with a shape memory polymer (SMP) the stiffness of which is controlled by environmental temperature. The experimental results show that the proposed actuator enabled to control and maintain its deformation by changing the stiffness. Therefore, the usability of the proposed actuator was confirmed.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130339990","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 : 2015-10-01DOI: 10.1109/SICE.2015.7285583
Takashi Iwagaya, C. Schmitke, Allan Wittlopf
Recently, due to the complexity and its increase of the product specifications in automotive industry, the Model — Based — Development (MBD) is introduced to make the development more efficient. Especially, in the control design, Hardware — In — the — Loop — Simulation (HILS) which is automatic testing system for ECU is applied to decrease the verification and validation time because it is increased by the complexity of the controller.
{"title":"Event handling for real-time simulation with hybrid systems","authors":"Takashi Iwagaya, C. Schmitke, Allan Wittlopf","doi":"10.1109/SICE.2015.7285583","DOIUrl":"https://doi.org/10.1109/SICE.2015.7285583","url":null,"abstract":"Recently, due to the complexity and its increase of the product specifications in automotive industry, the Model — Based — Development (MBD) is introduced to make the development more efficient. Especially, in the control design, Hardware — In — the — Loop — Simulation (HILS) which is automatic testing system for ECU is applied to decrease the verification and validation time because it is increased by the complexity of the controller.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132089264","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 : 2015-07-28DOI: 10.1109/SICE.2015.7285338
M. Koike, Yoshihiro Tagawa, T. Ishizaki, T. Sadamoto, J. Imura
The purpose of this study is to obtain a day-ahead schedule of model predictive power generation for multiple generators considering the uncertainty of PV power and demand prediction. Expressing the prediction uncertainty as interval prediction, we calculate the regulating capacity of multiple generators that is sufficient to tolerate a given amount of prediction uncertainty. The regulating capacity is decided by solving an interval valued allocation problem. We give a solution by taking an approach based on the monotonicity analysis.
{"title":"Day-ahead scheduling for model predictive power generation based on interval prediction of photovoltaics — generalization to multiple generators","authors":"M. Koike, Yoshihiro Tagawa, T. Ishizaki, T. Sadamoto, J. Imura","doi":"10.1109/SICE.2015.7285338","DOIUrl":"https://doi.org/10.1109/SICE.2015.7285338","url":null,"abstract":"The purpose of this study is to obtain a day-ahead schedule of model predictive power generation for multiple generators considering the uncertainty of PV power and demand prediction. Expressing the prediction uncertainty as interval prediction, we calculate the regulating capacity of multiple generators that is sufficient to tolerate a given amount of prediction uncertainty. The regulating capacity is decided by solving an interval valued allocation problem. We give a solution by taking an approach based on the monotonicity analysis.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123075121","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 : 2015-07-28DOI: 10.1109/SICE.2015.7285588
Sunkil Yun, H. Nishimura
Concerns about limited petroleum supplies and global warming drive the demand of fuel-efficient vehicles. Thus, in recent years, interest in development of small electric vehicles for 1 or 2 passengers is getting stronger than ever. Small electric vehicles are more vulnerable to vehicle handling and stability under emergency maneuvering conditions such as side wind [1] because small electric vehicles, which is compact size and lightweight, respond to steering induced maneuvers more quickly with greater amplitude.
{"title":"Integrated vehicle dynamics control of rear steering angle and driving/braking torque to improve vehicle handling and stability of a small four in-wheel-motors vehicle","authors":"Sunkil Yun, H. Nishimura","doi":"10.1109/SICE.2015.7285588","DOIUrl":"https://doi.org/10.1109/SICE.2015.7285588","url":null,"abstract":"Concerns about limited petroleum supplies and global warming drive the demand of fuel-efficient vehicles. Thus, in recent years, interest in development of small electric vehicles for 1 or 2 passengers is getting stronger than ever. Small electric vehicles are more vulnerable to vehicle handling and stability under emergency maneuvering conditions such as side wind [1] because small electric vehicles, which is compact size and lightweight, respond to steering induced maneuvers more quickly with greater amplitude.","PeriodicalId":405766,"journal":{"name":"Annual Conference of the Society of Instrument and Control Engineers of Japan","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127439112","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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