Pub Date : 2011-12-01DOI: 10.1109/IECON.2011.6119482
K. Ishaque, Z. Salam, Amir Shamsudin
This paper presents the application of particle swarm optimization (PSO) for maximum power point tracking (MPPT) of Photovoltaic (PV) system using the direct control method. The main contribution of the proposed scheme is the elimination of PI control loop which normally exists to manipulate the duty cycle. It is shown that the proposed MPPT controller has a similar structure to the conventional hill climbing method. However, the former exhibits superior dynamic and steady state response. It is also discovered that the controller performs satisfactorily during partial shading conditions of the PV array. It is able to track the global peak (GP) within ten sampling intervals. Simulation results indicate that proposed controller outperforms the hill climbing method for all type of environmental conditions.
{"title":"Application of particle swarm optimization for maximum power point tracking of PV system with direct control method","authors":"K. Ishaque, Z. Salam, Amir Shamsudin","doi":"10.1109/IECON.2011.6119482","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119482","url":null,"abstract":"This paper presents the application of particle swarm optimization (PSO) for maximum power point tracking (MPPT) of Photovoltaic (PV) system using the direct control method. The main contribution of the proposed scheme is the elimination of PI control loop which normally exists to manipulate the duty cycle. It is shown that the proposed MPPT controller has a similar structure to the conventional hill climbing method. However, the former exhibits superior dynamic and steady state response. It is also discovered that the controller performs satisfactorily during partial shading conditions of the PV array. It is able to track the global peak (GP) within ten sampling intervals. Simulation results indicate that proposed controller outperforms the hill climbing method for all type of environmental conditions.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125567409","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119827
M. Ihara, T. Shen, H. Nishi
To cope with global energy-related problems, the effective use of renewable energy such as photovoltaic and wind power is required. As these energy sources are unstable, it is required to introduce batteries into the power grids. Vehicle to grid (V2G) is a technology that is receiving much attention as a method for achieving an efficient energy management system (EMS) by connecting electric vehicles (EVs) to an electric power grid. In this study, we constructed an EMS model using MATLAB/Simulink and determined the optimized capacity of the fixed batteries and EVs based on data sampled at an experimental site in terms of capital cost. Fixed batteries as well as EV batteries were modeled and evaluated using the actual parameters and constraints of the terminal. The main aim was to level the received energy and achieve the recharge level of the battery in one day to maintain a long battery lifetime. Through simulations, we determined the optimized capacity based on actually measured data. We could exploit the management method by considering the relation between fixed batteries and EV batteries. Using this relation, the proposed method could predict the optimized fixed or EV batteries capacity required.
为了应对全球能源相关问题，需要有效利用光伏和风能等可再生能源。由于这些能源不稳定，需要将电池引入电网。汽车到电网(Vehicle to grid, V2G)是将电动汽车(ev)连接到电网，实现高效能源管理系统(EMS)的一种备受关注的技术。在本研究中，我们利用MATLAB/Simulink构建了EMS模型，并根据实验现场的采样数据确定了固定电池和电动汽车在资本成本方面的最优容量。利用终端的实际参数和约束条件对固定电池和电动汽车电池进行了建模和评价。主要目的是使接收的能量达到水平，并在一天内达到电池的充电水平，以保持较长的电池寿命。通过仿真，根据实测数据确定了优化后的容量。考虑固定电池与电动汽车电池之间的关系，开发管理方法。利用这一关系，该方法可以预测优化后的固定或电动汽车电池容量。
{"title":"A simulation study of electric power leveling using V2G infrastructure","authors":"M. Ihara, T. Shen, H. Nishi","doi":"10.1109/IECON.2011.6119827","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119827","url":null,"abstract":"To cope with global energy-related problems, the effective use of renewable energy such as photovoltaic and wind power is required. As these energy sources are unstable, it is required to introduce batteries into the power grids. Vehicle to grid (V2G) is a technology that is receiving much attention as a method for achieving an efficient energy management system (EMS) by connecting electric vehicles (EVs) to an electric power grid. In this study, we constructed an EMS model using MATLAB/Simulink and determined the optimized capacity of the fixed batteries and EVs based on data sampled at an experimental site in terms of capital cost. Fixed batteries as well as EV batteries were modeled and evaluated using the actual parameters and constraints of the terminal. The main aim was to level the received energy and achieve the recharge level of the battery in one day to maintain a long battery lifetime. Through simulations, we determined the optimized capacity based on actually measured data. We could exploit the management method by considering the relation between fixed batteries and EV batteries. Using this relation, the proposed method could predict the optimized fixed or EV batteries capacity required.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124627712","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119829
Kyosuke Funami, H. Nishi
Saving energy is indispensable in the solving of environmental problems such as global warming and resource depletion. In the household and office sectors, which are growing in terms of electric power consumption, it is desired to improve the efficiency of air conditioning because power consumption due to air conditioning is dominant particularly in summer when conditions of electricity usage are tight. However, the drawback with the excessive reduction in power consumption is the consequent reduction in indoor comfort levels and working efficiency. Therefore, it is important to reduce power consumption with comfort in mind. In our study, we carry out experiments on environmental measurement and control of an air conditioner by using the Keio university network oriented intelligent and versatile energy saving system (KNIVES). Three different control methods are used for evaluation of power consumption. The first method involves ON/OFF control of the air conditioner through its demand control terminal; this method is widely used. The second method involves infrared control in changing the temperature of the air conditioner by means of automatic infrared signals. The thirds method involves inverter control that changes the inverter power output of the air conditioner by using a special demand control unit. Power consumption and comfort are compared and evaluated for each of the three methods.
{"title":"Evaluation of power consumption and comfort using inverter control of air-conditioning","authors":"Kyosuke Funami, H. Nishi","doi":"10.1109/IECON.2011.6119829","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119829","url":null,"abstract":"Saving energy is indispensable in the solving of environmental problems such as global warming and resource depletion. In the household and office sectors, which are growing in terms of electric power consumption, it is desired to improve the efficiency of air conditioning because power consumption due to air conditioning is dominant particularly in summer when conditions of electricity usage are tight. However, the drawback with the excessive reduction in power consumption is the consequent reduction in indoor comfort levels and working efficiency. Therefore, it is important to reduce power consumption with comfort in mind. In our study, we carry out experiments on environmental measurement and control of an air conditioner by using the Keio university network oriented intelligent and versatile energy saving system (KNIVES). Three different control methods are used for evaluation of power consumption. The first method involves ON/OFF control of the air conditioner through its demand control terminal; this method is widely used. The second method involves infrared control in changing the temperature of the air conditioner by means of automatic infrared signals. The thirds method involves inverter control that changes the inverter power output of the air conditioner by using a special demand control unit. Power consumption and comfort are compared and evaluated for each of the three methods.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127453434","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119547
S. Okano, K. Kondo
In this paper, an energy control method to decide the engine output power according to the error of the Electric Double Layer Capacitors (EDLCs) energy, instead of the EDLCs voltage. By means of this method, the control system can be dealt with a linear system and the feature enables systematic designing method of the threshold of the EDLCs energy error to decide the engine output power, independent from the EDLCs voltage and the EDLCs capacitance. The proposed methods are verified by numerical simulations, assuming a train operation in a typical rural line.
{"title":"Study on a method by energy management the engine for controlling output power of hybrid powered railway vehicles with Electric Double Layer Capacitors","authors":"S. Okano, K. Kondo","doi":"10.1109/IECON.2011.6119547","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119547","url":null,"abstract":"In this paper, an energy control method to decide the engine output power according to the error of the Electric Double Layer Capacitors (EDLCs) energy, instead of the EDLCs voltage. By means of this method, the control system can be dealt with a linear system and the feature enables systematic designing method of the threshold of the EDLCs energy error to decide the engine output power, independent from the EDLCs voltage and the EDLCs capacitance. The proposed methods are verified by numerical simulations, assuming a train operation in a typical rural line.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128907572","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119305
Kazuaki Okada, Y. Fujimoto
In this paper, we propose a new localization and mapping method using the gridded map and range scan data only. The proposed method is applied to the autonomous wheelchair system. In this method we applied Particle Swarm Optimization (PSO) with appropriate initial values to estimate displacements of position and orientation of the wheelchair. We compared a conventional method that used cross correlation from a previous scan data and a current scan data and our method in some experiments. The experimental results in four situations show the high accuracy estimation and high processing speed of our method.
{"title":"Grid-based localization and mapping method without odometry information","authors":"Kazuaki Okada, Y. Fujimoto","doi":"10.1109/IECON.2011.6119305","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119305","url":null,"abstract":"In this paper, we propose a new localization and mapping method using the gridded map and range scan data only. The proposed method is applied to the autonomous wheelchair system. In this method we applied Particle Swarm Optimization (PSO) with appropriate initial values to estimate displacements of position and orientation of the wheelchair. We compared a conventional method that used cross correlation from a previous scan data and a current scan data and our method in some experiments. The experimental results in four situations show the high accuracy estimation and high processing speed of our method.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115517070","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119357
R. Horie, T. Murakami
This paper describes a master-slave control by force feedback based virtual impedance controller. In proposed method, human operator can design “Operationality” arbitrarily by changing the impedance model. This is one of the remarkable points. And more, motion commands of master and slave are generated by the minimum feedback information in proposed method. To verify the validity of proposed method, the performance of the controller is analyzed and evaluated by using “Reproducibility” and “Operationality”. Furthermore, proposed controller and 4ch bilateral controller are compared experimentally and the validation is conducted with 1-DOF and 2-DOF manipulator.
{"title":"An analysis of a novel master-slave control and its application to MDOF motion systems","authors":"R. Horie, T. Murakami","doi":"10.1109/IECON.2011.6119357","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119357","url":null,"abstract":"This paper describes a master-slave control by force feedback based virtual impedance controller. In proposed method, human operator can design “Operationality” arbitrarily by changing the impedance model. This is one of the remarkable points. And more, motion commands of master and slave are generated by the minimum feedback information in proposed method. To verify the validity of proposed method, the performance of the controller is analyzed and evaluated by using “Reproducibility” and “Operationality”. Furthermore, proposed controller and 4ch bilateral controller are compared experimentally and the validation is conducted with 1-DOF and 2-DOF manipulator.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128427283","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119474
Ryo Kamei, Tae-Woong Kim, A. Kawamura
The calorimetric power loss measurement is introduced for securing both higher accuracy measurement and faster measurement time. To reduce measurement accuracy error, copper leakage loss of wires is taken into consideration. To save measurement time, balancing relation between flow rate and temperature rise is also taken into consideration. Flow rate and temperature rise are largely dependent on sensor resolutions. To satisfy faster measurement time, high resolution sensors are extremely required. By balancing relation between flow rate and temperature rise, the maximized flow rate can be calculated. This effectiveness is verified through theoretical and experimental analyses.
{"title":"Accurate calorimetric power loss measurement for efficient power converters","authors":"Ryo Kamei, Tae-Woong Kim, A. Kawamura","doi":"10.1109/IECON.2011.6119474","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119474","url":null,"abstract":"The calorimetric power loss measurement is introduced for securing both higher accuracy measurement and faster measurement time. To reduce measurement accuracy error, copper leakage loss of wires is taken into consideration. To save measurement time, balancing relation between flow rate and temperature rise is also taken into consideration. Flow rate and temperature rise are largely dependent on sensor resolutions. To satisfy faster measurement time, high resolution sensors are extremely required. By balancing relation between flow rate and temperature rise, the maximized flow rate can be calculated. This effectiveness is verified through theoretical and experimental analyses.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121673534","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119297
K. Iizuka, Tamon Yoshida, T. Kubota
Rovers are one of the most important mission devices for planetary exploration. The Lnar rovers are required to move on rough terrains such as in craters and rear cliffs where it is scientifically very important to explore. Recently, wheel typed rovers are popular for planetary exploration missions. However, there is a problem that the wheel typed rovers have possibility of stack. Because the ground where the rover have to traverse is loose soil called Regolith. When the rover traverse the ground like this, the one have possible doing stack. Therefore the surface of the wheel of the rovers has grouser like fin's form. The running performance of the rover can improve by grouser of the wheel. However, it is not clear on what kind of the form of grouser is appropriate. Therefore, this paper investigates about grouser's form. We carry out experiment that focus on the length and the ratio between radius of the wheel and grouser's length concrete. In experiment, we use the single wheel test equipment. This equipment can measure slip ratio various slope for traversing. We consider the running performance from results using single wheel test.
{"title":"Effect of tractive given by grousers mounted on wheels for lunar rovers on loose soil","authors":"K. Iizuka, Tamon Yoshida, T. Kubota","doi":"10.1109/IECON.2011.6119297","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119297","url":null,"abstract":"Rovers are one of the most important mission devices for planetary exploration. The Lnar rovers are required to move on rough terrains such as in craters and rear cliffs where it is scientifically very important to explore. Recently, wheel typed rovers are popular for planetary exploration missions. However, there is a problem that the wheel typed rovers have possibility of stack. Because the ground where the rover have to traverse is loose soil called Regolith. When the rover traverse the ground like this, the one have possible doing stack. Therefore the surface of the wheel of the rovers has grouser like fin's form. The running performance of the rover can improve by grouser of the wheel. However, it is not clear on what kind of the form of grouser is appropriate. Therefore, this paper investigates about grouser's form. We carry out experiment that focus on the length and the ratio between radius of the wheel and grouser's length concrete. In experiment, we use the single wheel test equipment. This equipment can measure slip ratio various slope for traversing. We consider the running performance from results using single wheel test.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132831709","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119313
T. Shimono, Nobuyuki Togashi, N. Motoi, A. Kawamura
This paper proposes a manipulability servoing control method in null space for redundant bilateral control systems. In order to bi-directionally transmit vivid haptic sensation between motion control systems, both synchronization of position signals and “action and reaction” law of force signals must simultaneously be achieved. The proposed method adopts modal decoupling method based on Hadamard matrix to bilateral workspace control. Then, this paper investigates the possibility that the proposed method realizes the transmission of haptic sensation and the manipulability servoing between redundant haptic motion systems. In this paper, the effectiveness of the proposed method is confirmed by simulation results and experimental results.
{"title":"Manipulability servoing in null space for bilateral motion control of redundant manipulators","authors":"T. Shimono, Nobuyuki Togashi, N. Motoi, A. Kawamura","doi":"10.1109/IECON.2011.6119313","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119313","url":null,"abstract":"This paper proposes a manipulability servoing control method in null space for redundant bilateral control systems. In order to bi-directionally transmit vivid haptic sensation between motion control systems, both synchronization of position signals and “action and reaction” law of force signals must simultaneously be achieved. The proposed method adopts modal decoupling method based on Hadamard matrix to bilateral workspace control. Then, this paper investigates the possibility that the proposed method realizes the transmission of haptic sensation and the manipulability servoing between redundant haptic motion systems. In this paper, the effectiveness of the proposed method is confirmed by simulation results and experimental results.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117283085","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 : 2011-12-01DOI: 10.1109/IECON.2011.6119945
E. Ahmed, M. Shoyama
This paper proposes novel stability analysis for variable step size incremental resistance INR maximum power point tracking MPPT. One important factor which judges system dynamics and steady state performances is the scaling factor (N), which used to update the controlling equation in the tracking algorithm to determine the new duty cycle. The main contribution of this analysis appears in developing the overall small signal model of the PV system, which consists of PV module, DC-DC boost converter, digital INR MPPT, and resistive load. The overall system model has been developed. Therefore by using linear control theory, the boundary value of the scaling factor has been determined. The theoretical analysis and the design principle of the proposed stability analysis have been validated using MATLAB simulation, and experimentally using digital signal processor DSP.
{"title":"Novel stability analysis of variable step size incremental resistance INR MPPT for PV systems","authors":"E. Ahmed, M. Shoyama","doi":"10.1109/IECON.2011.6119945","DOIUrl":"https://doi.org/10.1109/IECON.2011.6119945","url":null,"abstract":"This paper proposes novel stability analysis for variable step size incremental resistance INR maximum power point tracking MPPT. One important factor which judges system dynamics and steady state performances is the scaling factor (N), which used to update the controlling equation in the tracking algorithm to determine the new duty cycle. The main contribution of this analysis appears in developing the overall small signal model of the PV system, which consists of PV module, DC-DC boost converter, digital INR MPPT, and resistive load. The overall system model has been developed. Therefore by using linear control theory, the boundary value of the scaling factor has been determined. The theoretical analysis and the design principle of the proposed stability analysis have been validated using MATLAB simulation, and experimentally using digital signal processor DSP.","PeriodicalId":105539,"journal":{"name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115698185","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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