Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839872
Wason Somkaew, Somchai Thepphaeng, C. Pirak
In this paper, the data security for advanced metering infrastructure (AMI) systems has been investigated and implemented. Specifically, this paper mainly focuses on the data security over the ZigBee network because this network part is very vulnerable, and it directly connects with the consumer's premises. Based on the recent advances in a protocol standard for AMI systems, i.e. the DLMS/COSEM protocol standard, the data security implementation guideline has been released, and it illustrates that the 128-bit AES GCM cryptography is recommended. Therefore, the implementation and performance evaluation of the 128-bit AES GCM cryptography have been conducted in this research work by using the advanced security IC. Specifically, the data encryption and decryption scheme are experimentally verified, and the performance comparison between the hardware-based and software-based crypto-engines is examined. The experimental results show that data encryption and decryption process are consistent, and the hardware-based crypto-engine is superior to the software-based crypto-engine in terms of processing time, in which the hardware-based scheme spends less processing time than software-based scheme. Furthermore, the power consumption of such security IC in the smart meter prototype is very low making it suitable and attractive for the deployment of millions of smart meter in the field.
{"title":"Data security implementation over ZigBee networks for AMI systems","authors":"Wason Somkaew, Somchai Thepphaeng, C. Pirak","doi":"10.1109/ECTICON.2014.6839872","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839872","url":null,"abstract":"In this paper, the data security for advanced metering infrastructure (AMI) systems has been investigated and implemented. Specifically, this paper mainly focuses on the data security over the ZigBee network because this network part is very vulnerable, and it directly connects with the consumer's premises. Based on the recent advances in a protocol standard for AMI systems, i.e. the DLMS/COSEM protocol standard, the data security implementation guideline has been released, and it illustrates that the 128-bit AES GCM cryptography is recommended. Therefore, the implementation and performance evaluation of the 128-bit AES GCM cryptography have been conducted in this research work by using the advanced security IC. Specifically, the data encryption and decryption scheme are experimentally verified, and the performance comparison between the hardware-based and software-based crypto-engines is examined. The experimental results show that data encryption and decryption process are consistent, and the hardware-based crypto-engine is superior to the software-based crypto-engine in terms of processing time, in which the hardware-based scheme spends less processing time than software-based scheme. Furthermore, the power consumption of such security IC in the smart meter prototype is very low making it suitable and attractive for the deployment of millions of smart meter in the field.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125445662","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 : 2014-05-14DOI: 10.1109/ECTICON.2014.6839775
A. Sharma, N. Gupta
An impedance matching technique for RF-MEMS switch based microstrip patch antenna is considered in this paper to improve the return loss and impedance bandwidth. It is observed that the impedance matching can be improved by using a lumped element based matching network. The impedance matching technique is performed by using Smith Chart and verified through Ansoft HFSS simulations. An inductor of 1.62 nH in series with CPW transmission line can be used as a lumped element matching network to improve the return loss upto -18dB at resonant frequency of 5 GHz with adequate impedance bandwidth.
{"title":"Impedance matching for RF-MEMS based microstrip patch antenna","authors":"A. Sharma, N. Gupta","doi":"10.1109/ECTICON.2014.6839775","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839775","url":null,"abstract":"An impedance matching technique for RF-MEMS switch based microstrip patch antenna is considered in this paper to improve the return loss and impedance bandwidth. It is observed that the impedance matching can be improved by using a lumped element based matching network. The impedance matching technique is performed by using Smith Chart and verified through Ansoft HFSS simulations. An inductor of 1.62 nH in series with CPW transmission line can be used as a lumped element matching network to improve the return loss upto -18dB at resonant frequency of 5 GHz with adequate impedance bandwidth.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121707329","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 : 2014-05-14DOI: 10.1109/ECTICON.2014.6839902
Sora Son, Sangwook Bae, Shimin Sun, Sunyoung Han
IPv6 has been developed to deal with the increase in number of hosts in the Internet. IPv6 address can be assigned to any network devices. IPv6 provides new function called SLAAC (Stateless Address Auto Configuration). SLAAC is a significant feature for host itself generating and configuring own addresses to enable communication. But this feature has drawbacks in term of security and management of networks. In this paper, we propose a blocking mechanism for malicious hosts using the feature of RA message in ICMPv6 (Internet Control Message Protocol version 6). It was experimented using Emulab testbed environment. And the result show that it can block malicious hosts successfully.
IPv6的发展是为了应对互联网中主机数量的增加。IPv6地址可以分配给任何网络设备。IPv6提供了名为SLAAC(无状态地址自动配置)的新功能。SLAAC是主机本身生成和配置自己的地址以启用通信的重要特性。但是这种特性在网络的安全性和管理方面存在缺陷。本文利用ICMPv6 (Internet Control message Protocol version 6)中的RA消息特性，提出了一种针对恶意主机的拦截机制，并在Emulab测试平台环境下进行了实验。实验结果表明，该算法能够成功拦截恶意主机。
{"title":"An address management mechanism for blocking external communications in IPv6 networks","authors":"Sora Son, Sangwook Bae, Shimin Sun, Sunyoung Han","doi":"10.1109/ECTICON.2014.6839902","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839902","url":null,"abstract":"IPv6 has been developed to deal with the increase in number of hosts in the Internet. IPv6 address can be assigned to any network devices. IPv6 provides new function called SLAAC (Stateless Address Auto Configuration). SLAAC is a significant feature for host itself generating and configuring own addresses to enable communication. But this feature has drawbacks in term of security and management of networks. In this paper, we propose a blocking mechanism for malicious hosts using the feature of RA message in ICMPv6 (Internet Control Message Protocol version 6). It was experimented using Emulab testbed environment. And the result show that it can block malicious hosts successfully.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123763358","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 : 2014-05-14DOI: 10.1109/ECTICON.2014.6839810
Supaporn Tantanasiriwong, C. Haruechaiyasak
Recommending information across domains has recently gained much attention among research and academic communities. Traditionally, a cross-domain recommender system has emerged to assist users in finding relevant information from the target domain given the initial information from the source domain. However, in the area of citation recommendation, mapping terms across different domains could be problematic due to the term mismatch. In this paper, we propose a cross-domain citation recommendation framework to suggest relevant research publications given a patent as the source domain. Two main approaches are implemented and compared in this study. The first is a baseline approach which is based on simple keyword mapping technique. The second approach, Co-Citation Selection (CCS), is based on the collaborative filtering in which neighboring papers is selected and weighted into publication citation prediction. To compare between two approaches, we adopt the Cosine, Jaccard, and KL-Divergence as the similarity measurement. The evaluation results are reported in terms of mean precision, recall, F-measure, and reciprocal rank. The best improvement of 22.6% in mean reciprocal rank was achieved with the Jaccard similarity.
{"title":"Cross-domain citation recommendation based on Co-Citation Selection","authors":"Supaporn Tantanasiriwong, C. Haruechaiyasak","doi":"10.1109/ECTICON.2014.6839810","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839810","url":null,"abstract":"Recommending information across domains has recently gained much attention among research and academic communities. Traditionally, a cross-domain recommender system has emerged to assist users in finding relevant information from the target domain given the initial information from the source domain. However, in the area of citation recommendation, mapping terms across different domains could be problematic due to the term mismatch. In this paper, we propose a cross-domain citation recommendation framework to suggest relevant research publications given a patent as the source domain. Two main approaches are implemented and compared in this study. The first is a baseline approach which is based on simple keyword mapping technique. The second approach, Co-Citation Selection (CCS), is based on the collaborative filtering in which neighboring papers is selected and weighted into publication citation prediction. To compare between two approaches, we adopt the Cosine, Jaccard, and KL-Divergence as the similarity measurement. The evaluation results are reported in terms of mean precision, recall, F-measure, and reciprocal rank. The best improvement of 22.6% in mean reciprocal rank was achieved with the Jaccard similarity.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123746645","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}
This paper presents a preliminary study of quality of experience (QoE) of VoIP that are provided as social network services using Perceptual Evaluation of Speech Quality (PESQ) with Thai and Chinese speech samples. This study focuses on VoIP quality of the free call feature from Facebook and LINE, which are the popular social network site and the popular social network application for Thai users respectively. From this study, it has been found no significant difference between VoIP quality from Facebook and LINE when connected Internet via WLAN. However, it has been found that LINE tends to provide better VoIP quality than Facebook with significant difference (p-value <; 0.05) when connected 3G networks in three forth test conditions, including two test conditions with Thai speech.
{"title":"Quality of experience of VoIP for social network services: Facebook vs LINE over 3G networks in North Bangkok","authors":"Pongpisit Wuttidittachotti, Kiattisak Yochanang, Narumon Chumkot, Tuul Triyason, Therdpong Daengsi","doi":"10.1109/ECTICON.2014.6839876","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839876","url":null,"abstract":"This paper presents a preliminary study of quality of experience (QoE) of VoIP that are provided as social network services using Perceptual Evaluation of Speech Quality (PESQ) with Thai and Chinese speech samples. This study focuses on VoIP quality of the free call feature from Facebook and LINE, which are the popular social network site and the popular social network application for Thai users respectively. From this study, it has been found no significant difference between VoIP quality from Facebook and LINE when connected Internet via WLAN. However, it has been found that LINE tends to provide better VoIP quality than Facebook with significant difference (p-value <; 0.05) when connected 3G networks in three forth test conditions, including two test conditions with Thai speech.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122532865","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 : 2014-05-14DOI: 10.1109/ECTICON.2014.6839830
N. Soontranon, Panu Srestasathiern, P. Rakwatin
In this paper, a software program is developed to monitor rice growing stages. Images are required as input data for the software. Using field server equipment, the images are obtained from two rice fields located in Suphanburi and Roi Et provinces, Thailand. Each daily image covers approximately 100 × 100 m2 recorded by 720 × 480 pixels. Typically, a rice growing cycle is separated by three stages; seedling, tillering and heading. To define each stage, vegetation index is used for monitoring and analysing. In the prototype software, the vegetation index is computed from visible RGB channels. Our proposed diagram is described by three steps. a) Rice field segmentation is an initial step used to segment rice field region from the other regions (landscape, sky). b) Vegetation index computation is a measurement, which measures the levels of live green plants on the rice field region. c) Graph analysis is an algorithm used to determine and separate the rice growing stages. The experiments compared three vegetation indices; ExG-Excessive Green, NGRDI-Normalized Green Red Difference Index and ExGR-difference of ExG and ExR (Excessive Red). Relying on the images obtained from the field server, we found that the rice growing stages are able to monitor by using ExG index which is more efficient than the other two.
{"title":"Rice growing stage monitoring in small-scale region using ExG vegetation index","authors":"N. Soontranon, Panu Srestasathiern, P. Rakwatin","doi":"10.1109/ECTICON.2014.6839830","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839830","url":null,"abstract":"In this paper, a software program is developed to monitor rice growing stages. Images are required as input data for the software. Using field server equipment, the images are obtained from two rice fields located in Suphanburi and Roi Et provinces, Thailand. Each daily image covers approximately 100 × 100 m2 recorded by 720 × 480 pixels. Typically, a rice growing cycle is separated by three stages; seedling, tillering and heading. To define each stage, vegetation index is used for monitoring and analysing. In the prototype software, the vegetation index is computed from visible RGB channels. Our proposed diagram is described by three steps. a) Rice field segmentation is an initial step used to segment rice field region from the other regions (landscape, sky). b) Vegetation index computation is a measurement, which measures the levels of live green plants on the rice field region. c) Graph analysis is an algorithm used to determine and separate the rice growing stages. The experiments compared three vegetation indices; ExG-Excessive Green, NGRDI-Normalized Green Red Difference Index and ExGR-difference of ExG and ExR (Excessive Red). Relying on the images obtained from the field server, we found that the rice growing stages are able to monitor by using ExG index which is more efficient than the other two.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122568068","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 : 2014-05-14DOI: 10.1109/ECTICON.2014.6839792
Nuttakron Keratipaiboon, S. Sirisukprasert
This paper presents a power transfer technique for Inductively Coupling Power Transfer (ICPT) Systems by searching suitable switching frequency based on the maximum DC power supply current. To verify the proposed control strategy, an ICPT system is implemented by a full-bridge resonant inverter that is compensated its switching losses by capacitors on both primary and secondary sides. The analysis and design techniques for the ICPT system are presented. By using the proposed control method, the maximum power transfer can be accomplished, even though the shape of coil, the capacitor compensation topologies and air-gap are changed. The experimental results prove that the maximum power transfer can be successfully achieved.
{"title":"A control technique for Inductively Coupling Power Transfer systems","authors":"Nuttakron Keratipaiboon, S. Sirisukprasert","doi":"10.1109/ECTICON.2014.6839792","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839792","url":null,"abstract":"This paper presents a power transfer technique for Inductively Coupling Power Transfer (ICPT) Systems by searching suitable switching frequency based on the maximum DC power supply current. To verify the proposed control strategy, an ICPT system is implemented by a full-bridge resonant inverter that is compensated its switching losses by capacitors on both primary and secondary sides. The analysis and design techniques for the ICPT system are presented. By using the proposed control method, the maximum power transfer can be accomplished, even though the shape of coil, the capacitor compensation topologies and air-gap are changed. The experimental results prove that the maximum power transfer can be successfully achieved.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128216375","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 : 2014-05-14DOI: 10.1109/ECTICON.2014.6839765
Kornkanok Khaoampai, K. N. Nakorn, K. Rojviboonchai
Mobile phone has played an important role in daily life. Many applications on mobile phone can provide location service to user. A GPS sensor provides highly accurate localization system in outdoor environment but low accuracy over an indoor scenario because obstacles and mainly infrastructure of building block a GPS signal from GPS satellites. Moreover, GPS cannot determine a current floor that mobile phone is located on. Many indoor localization approaches have been proposed to address this problem. The approaches require back-end servers, which have high cost of hardware, software and maintenances to support localization processing. In this paper, we propose a low complexity floor localization algorithm. Our floor localization can be done on mobile phone and does not need any support from back-end server. The algorithm uses Wi-Fi access points that the mobile phone can detect as an input to determine current floor of the mobile phone. In addition, our proposed floor localization algorithm provides up to 90.83% of accuracy.
{"title":"Low complexity floor localization algorithm for mobile phone","authors":"Kornkanok Khaoampai, K. N. Nakorn, K. Rojviboonchai","doi":"10.1109/ECTICON.2014.6839765","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839765","url":null,"abstract":"Mobile phone has played an important role in daily life. Many applications on mobile phone can provide location service to user. A GPS sensor provides highly accurate localization system in outdoor environment but low accuracy over an indoor scenario because obstacles and mainly infrastructure of building block a GPS signal from GPS satellites. Moreover, GPS cannot determine a current floor that mobile phone is located on. Many indoor localization approaches have been proposed to address this problem. The approaches require back-end servers, which have high cost of hardware, software and maintenances to support localization processing. In this paper, we propose a low complexity floor localization algorithm. Our floor localization can be done on mobile phone and does not need any support from back-end server. The algorithm uses Wi-Fi access points that the mobile phone can detect as an input to determine current floor of the mobile phone. In addition, our proposed floor localization algorithm provides up to 90.83% of accuracy.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131191711","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 : 2014-05-14DOI: 10.1109/ECTICON.2014.6839891
Pumipong Duangtang, P. Krachodnok, R. Wongsan
This paper presents the study of the new exciting method for improving gain of the conventional conical horn at C-band frequency by using mushroom-like Electromagnetic Band Gap (EBG). The important technique of this paper is to use the basic mushroom-like Electromagnetic Band Gap (EBG) on circular plate and connected to waveguide/coaxial adapter. From the study, we found that such technique can provide the better gain and small size when compare to the conventional conical horn antenna. From the simulated results by using the licensed Computational Simulation Software (CST), we found that this technique provides the gain around 19.3 dBi.
{"title":"Gain improvement for conventional conical horn by using mushroom-like electromagnetic band gap","authors":"Pumipong Duangtang, P. Krachodnok, R. Wongsan","doi":"10.1109/ECTICON.2014.6839891","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839891","url":null,"abstract":"This paper presents the study of the new exciting method for improving gain of the conventional conical horn at C-band frequency by using mushroom-like Electromagnetic Band Gap (EBG). The important technique of this paper is to use the basic mushroom-like Electromagnetic Band Gap (EBG) on circular plate and connected to waveguide/coaxial adapter. From the study, we found that such technique can provide the better gain and small size when compare to the conventional conical horn antenna. From the simulated results by using the licensed Computational Simulation Software (CST), we found that this technique provides the gain around 19.3 dBi.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129438482","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 : 2014-05-14DOI: 10.1109/ECTICON.2014.6839874
Sekiya Noro, T. Funato, S. Aoi, K. Nakano, K. Tsuchiya
Human generates very slow (<;1[Hz]) and large (>20[mm]) body sway. This sway is considered to reflect the characteristic of human neural control. We propose a human control model with nonlinearlity and the effect of nonlinearlity is considered by mathematical analysis and simulation. As a result, we found that the proposed model has bifurcation structure with the magnitude of control gain. We consider that body sway is caused by this bifurcation structure. In order to verify the existence of such a nonlinear nature in human, we performed human experiment with two floor environments: fix and rotate floors. As a result, we verified the existence of nonlinearlity in human body sway and showed the potential existence of bifurcation structure.
{"title":"Experimental validation of nonlinear PID model for human standing with large body sway","authors":"Sekiya Noro, T. Funato, S. Aoi, K. Nakano, K. Tsuchiya","doi":"10.1109/ECTICON.2014.6839874","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839874","url":null,"abstract":"Human generates very slow (<;1[Hz]) and large (>20[mm]) body sway. This sway is considered to reflect the characteristic of human neural control. We propose a human control model with nonlinearlity and the effect of nonlinearlity is considered by mathematical analysis and simulation. As a result, we found that the proposed model has bifurcation structure with the magnitude of control gain. We consider that body sway is caused by this bifurcation structure. In order to verify the existence of such a nonlinear nature in human, we performed human experiment with two floor environments: fix and rotate floors. As a result, we verified the existence of nonlinearlity in human body sway and showed the potential existence of bifurcation structure.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128761723","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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