Qi-chang Duan, Jiajun Leng, Pan Duan, Bei Hu, Mingxuan Mao
In the case of partially shading PV array would appear multi-peak characteristics of the P-U curve, and it is difficult to track the maximum power point with the conventional method. Therefore, this paper proposes an improved variable step PO (perturb and observe) and Global scanning method (VSPO&GS) to achieve the maximum power point tracking. This algorithm is guaranteed not to fall into local optimum, and to make the power oscillation less. This scheme is divided into two steps: 1) The improved variable step size PO is used to track the local optimum, 2) Then the global scanning is used to obtain the global optimum. Finally, the proposed algorithm is compared with a conventional fixed step size PO algorithm and validated for sudden changes in the irradiance. The simulation results show the proposed algorithm can accurately track the maximum power point (MPP) to avoid the power loss and improve the efficiency of PV array under partial shaded conditions.
{"title":"An Improved Variable Step PO and Global Scanning MPPT Method for PV Systems under Partial Shading Condition","authors":"Qi-chang Duan, Jiajun Leng, Pan Duan, Bei Hu, Mingxuan Mao","doi":"10.1109/IHMSC.2015.173","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.173","url":null,"abstract":"In the case of partially shading PV array would appear multi-peak characteristics of the P-U curve, and it is difficult to track the maximum power point with the conventional method. Therefore, this paper proposes an improved variable step PO (perturb and observe) and Global scanning method (VSPO&GS) to achieve the maximum power point tracking. This algorithm is guaranteed not to fall into local optimum, and to make the power oscillation less. This scheme is divided into two steps: 1) The improved variable step size PO is used to track the local optimum, 2) Then the global scanning is used to obtain the global optimum. Finally, the proposed algorithm is compared with a conventional fixed step size PO algorithm and validated for sudden changes in the irradiance. The simulation results show the proposed algorithm can accurately track the maximum power point (MPP) to avoid the power loss and improve the efficiency of PV array under partial shaded conditions.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"52 1","pages":"382-386"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82714751","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 describes a new unsupervised approach for identifying the main themes of any text document with the aid of Wikipedia. In contrast to others, the proposed algorithm relies on merely two main aspects of Wikipedia, namely its articles titles and categories structure. The inner content of the articles of Wikipedia are not employed in our algorithm. We describe in this paper how to build a Term-Categories vector that defines how strong a term is associated to a Wikipedia concept. We also explain how this vector is employed when processing a text document to discover its main themes. We report the performance of our method by attempting to predict the most representative categories for a subset of Wikipedia articles.
{"title":"Using Wikipedia Categories for Discovering the Themes of Text Documents","authors":"Abdullah Bawakid","doi":"10.1109/IHMSC.2015.68","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.68","url":null,"abstract":"This paper describes a new unsupervised approach for identifying the main themes of any text document with the aid of Wikipedia. In contrast to others, the proposed algorithm relies on merely two main aspects of Wikipedia, namely its articles titles and categories structure. The inner content of the articles of Wikipedia are not employed in our algorithm. We describe in this paper how to build a Term-Categories vector that defines how strong a term is associated to a Wikipedia concept. We also explain how this vector is employed when processing a text document to discover its main themes. We report the performance of our method by attempting to predict the most representative categories for a subset of Wikipedia articles.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"96 1","pages":"452-455"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90842953","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}
In order to improve the precision of remote eye tracking system, we propose an arc length compensation algorithm for gaze point which is based on the algorithm of gaze point with double light source in space similar triangles. First is the analysis of the influence of ocular cornea surface to the deviation of gaze point, according to the human eyeball physiological model and visual features, we presented to employ the plane triangle whose sides are the arc length of ocular cornea to compensate the gaze point. Then we got the final gaze point benefited from the further compensation using the nonlinear polynomial model to fit the deviation between the eye visual axis and optical axis. The result of our experiment shows that the deviation of this method is less than 1 centimeter both in horizontal and vertical directions and the effectiveness of the method.
{"title":"Research of Gaze Point Compensation Method in Eye Tracking System","authors":"C. Jin, Yaping Li","doi":"10.1109/IHMSC.2015.122","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.122","url":null,"abstract":"In order to improve the precision of remote eye tracking system, we propose an arc length compensation algorithm for gaze point which is based on the algorithm of gaze point with double light source in space similar triangles. First is the analysis of the influence of ocular cornea surface to the deviation of gaze point, according to the human eyeball physiological model and visual features, we presented to employ the plane triangle whose sides are the arc length of ocular cornea to compensate the gaze point. Then we got the final gaze point benefited from the further compensation using the nonlinear polynomial model to fit the deviation between the eye visual axis and optical axis. The result of our experiment shows that the deviation of this method is less than 1 centimeter both in horizontal and vertical directions and the effectiveness of the method.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"118 3 1","pages":"12-15"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73168434","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}
To solve the accuracy degeneracy of traditional high-degree cubature Kalman filter (HCKF) with cross-correlation between process noises and measurement noises at the same time, this paper proposes the improved HCKFs. Through fifth-degree cubature rule and different decor related principles, the frames of proposed filters in the approximated minimum mean square error sense are derived. The air-traffic maneuvering target tracking simulations are performed among the improved filters and traditional HCKF. Simulations results demonstrate the proposed filters not only can achieve almost the same accuracy as the traditional HCKF with independent white noise sequences, but also have superior performance to traditional HCKF while the noises are cross-correlated at the same time.
{"title":"High Degree Cubature Kalman Filters for Nonlinear Systems with Correlated Noises","authors":"Sisi Wang, Guoqing Qi, Lijun Wang","doi":"10.1109/IHMSC.2015.216","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.216","url":null,"abstract":"To solve the accuracy degeneracy of traditional high-degree cubature Kalman filter (HCKF) with cross-correlation between process noises and measurement noises at the same time, this paper proposes the improved HCKFs. Through fifth-degree cubature rule and different decor related principles, the frames of proposed filters in the approximated minimum mean square error sense are derived. The air-traffic maneuvering target tracking simulations are performed among the improved filters and traditional HCKF. Simulations results demonstrate the proposed filters not only can achieve almost the same accuracy as the traditional HCKF with independent white noise sequences, but also have superior performance to traditional HCKF while the noises are cross-correlated at the same time.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"23 1","pages":"57-61"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81984077","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}
In the process of using Chaotic Neural Network to resolve QoS (Quality of Service) multicast routing, this paper adds new constraint items on the basis of the original energy function and presents a new energy function, which solves the problem that the traditional algorithm is easy to fall into local minima and invalid solutions for not strictly restricting "row" and "column" items in the energy function. Simulation results show that, compared with the original energy function, the newly constructed energy function can avoid the chaotic neural network converging to the invalid solution and local optimal solution in a certain extent, and can improve the convergent speed of the network.
在利用混沌神经网络求解QoS (Quality of Service)组播路由的过程中，本文在原有能量函数的基础上增加了新的约束项，提出了一种新的能量函数，解决了传统算法由于对能量函数中的“行”和“列”项没有严格限制而容易陷入局部极小和无效解的问题。仿真结果表明，与原能量函数相比，新构造的能量函数在一定程度上避免了混沌神经网络收敛到无效解和局部最优解，提高了网络的收敛速度。
{"title":"An Improved QoS Multicast Routing Algorithm Based on Chaotic Neural Network","authors":"Ming Sun, Qingliang Zhang, Wei Cao","doi":"10.1109/IHMSC.2015.240","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.240","url":null,"abstract":"In the process of using Chaotic Neural Network to resolve QoS (Quality of Service) multicast routing, this paper adds new constraint items on the basis of the original energy function and presents a new energy function, which solves the problem that the traditional algorithm is easy to fall into local minima and invalid solutions for not strictly restricting \"row\" and \"column\" items in the energy function. Simulation results show that, compared with the original energy function, the newly constructed energy function can avoid the chaotic neural network converging to the invalid solution and local optimal solution in a certain extent, and can improve the convergent speed of the network.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"8 1","pages":"139-143"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81790296","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}
Small faults are difficult to be detected under noisy conditions. And the small sensor faults will introduce modeling errors in the observation equations. Therefore, small faults need be detected successfully and quickly. A novel small fault detection (FD) method is proposed using the residuals generated by the unscented Kalman filter (UKF) for a fifth-order two-phase nonlinear motor. Firstly, the introduction of the UKF is given. Secondly, on the basis of the UKF, a fault detection scheme based on a local approach is proposed. The local approach is used to detect small faults from residuals obtained from the UKF. Besides, the comparison between local approach and generalized likelihood test approach is introduced to illustrate the effectiveness of the proposed method. Finally, the proposed fault detection method is applied to detect faults of a fifth-order two-phase nonlinear motor system.
{"title":"A Novel Fault Detection Method Based on the UKF and Its Application to a Fifth-Order Two-Phase Nonlinear Motor System","authors":"Chang Liu, Honglun Wang","doi":"10.1109/IHMSC.2015.177","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.177","url":null,"abstract":"Small faults are difficult to be detected under noisy conditions. And the small sensor faults will introduce modeling errors in the observation equations. Therefore, small faults need be detected successfully and quickly. A novel small fault detection (FD) method is proposed using the residuals generated by the unscented Kalman filter (UKF) for a fifth-order two-phase nonlinear motor. Firstly, the introduction of the UKF is given. Secondly, on the basis of the UKF, a fault detection scheme based on a local approach is proposed. The local approach is used to detect small faults from residuals obtained from the UKF. Besides, the comparison between local approach and generalized likelihood test approach is introduced to illustrate the effectiveness of the proposed method. Finally, the proposed fault detection method is applied to detect faults of a fifth-order two-phase nonlinear motor system.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"20 1","pages":"304-307"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80588620","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}
In this paper, one important type of generalized convex functions termed as strongly quasi α-preinvex functions is studied. The relationships among strongly quasi α-preinvex functions, quasi α-preinvex functions, strictly quasi α-preinvex functions and semi strictly quasi α-preinvex functions have been discussed. Three important theorems of properties have been obtained for it on the middle point strongly quasi α-preinvexity. Finally, strongly quasi α-preinvex functions are used in the study of optimization problems.
{"title":"Characterizations and Applications of Quasi A-Preinvex Functions","authors":"Wang Haiying, Fu Zu-feng","doi":"10.1109/IHMSC.2015.161","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.161","url":null,"abstract":"In this paper, one important type of generalized convex functions termed as strongly quasi α-preinvex functions is studied. The relationships among strongly quasi α-preinvex functions, quasi α-preinvex functions, strictly quasi α-preinvex functions and semi strictly quasi α-preinvex functions have been discussed. Three important theorems of properties have been obtained for it on the middle point strongly quasi α-preinvexity. Finally, strongly quasi α-preinvex functions are used in the study of optimization problems.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"3 1","pages":"345-348"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83094441","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}
Cooperation is not only essential but favorable to human societies, animals and even molecules. Altruistic punishment is affirmed as one of solutions to elevate collaborative efforts, nonetheless, we can't ignore the inherent deficiency. Hence selfish punishment is put forward, the spatial public goods game (PGGs) with retaliation comprises of unconditional defectors, pure co operators, and retaliative co operators who retrieve part of payoffs which are created by their own from defectors except to contribute. This inhibits second-order free-riders and conquers the limitation of costly punishment. As is known to all selfishness is human nature. In human a typical human society, restitution against selfish behavior can be achieved through legal or arbitration proceedings, or perhaps ultra-legal means such as hiring gangsters, maybe the ways are resemblance to peer-punishment. This study invokes some interesting phenomenon like fault age and that all-C and all-D status change alternately. In addition to a dazzling visual graph of rock-paper-scissors type, the three strategies often appear as "mantis catching cicada yellowbird behind". Our conclusions indicate that retaliation is highly dependent on the synergy factor.
{"title":"The Spatial Public Goods Game with Selfish Punishment","authors":"Nan Si, Juan Li, Jianzhou Mao","doi":"10.1109/IHMSC.2015.142","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.142","url":null,"abstract":"Cooperation is not only essential but favorable to human societies, animals and even molecules. Altruistic punishment is affirmed as one of solutions to elevate collaborative efforts, nonetheless, we can't ignore the inherent deficiency. Hence selfish punishment is put forward, the spatial public goods game (PGGs) with retaliation comprises of unconditional defectors, pure co operators, and retaliative co operators who retrieve part of payoffs which are created by their own from defectors except to contribute. This inhibits second-order free-riders and conquers the limitation of costly punishment. As is known to all selfishness is human nature. In human a typical human society, restitution against selfish behavior can be achieved through legal or arbitration proceedings, or perhaps ultra-legal means such as hiring gangsters, maybe the ways are resemblance to peer-punishment. This study invokes some interesting phenomenon like fault age and that all-C and all-D status change alternately. In addition to a dazzling visual graph of rock-paper-scissors type, the three strategies often appear as \"mantis catching cicada yellowbird behind\". Our conclusions indicate that retaliation is highly dependent on the synergy factor.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"8 1","pages":"134-138"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90373557","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}
By eliminating the mechanical connection between the steering wheel and the wheels, the steer-by-wire system is completely out of the traditional variety of restrictions. The steering gear ratio of the vehicle can be designed freely according to demand, and good steering characteristics will obtain. This paper applies Fuzzy-PID controller, uses the target torque and the actual torque of the motor as input, and uses fuzzy control strategy, to get Kp, KI and KD values, uses these values as the PID controller's input, to control the body lateral acceleration. Comparing with non-controlled steering system, the simulation results show that the body lateral acceleration of the steer-by-wire system with Fuzzy-PID controller is smaller than that of non-controlled steering system, and the phase lag is also smaller, indicating that it has good tracking performance and better steering stability. The simulation results with the real vehicle test data are in good agreement, indicating the correctness and effectiveness of the simulation model.
{"title":"Design and Simulation for Steer-by-Wire System Based on Fuzzy-PID","authors":"Yang Nianjiong, Liao Qifeng","doi":"10.1109/IHMSC.2015.43","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.43","url":null,"abstract":"By eliminating the mechanical connection between the steering wheel and the wheels, the steer-by-wire system is completely out of the traditional variety of restrictions. The steering gear ratio of the vehicle can be designed freely according to demand, and good steering characteristics will obtain. This paper applies Fuzzy-PID controller, uses the target torque and the actual torque of the motor as input, and uses fuzzy control strategy, to get Kp, KI and KD values, uses these values as the PID controller's input, to control the body lateral acceleration. Comparing with non-controlled steering system, the simulation results show that the body lateral acceleration of the steer-by-wire system with Fuzzy-PID controller is smaller than that of non-controlled steering system, and the phase lag is also smaller, indicating that it has good tracking performance and better steering stability. The simulation results with the real vehicle test data are in good agreement, indicating the correctness and effectiveness of the simulation model.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"127 5 1","pages":"291-294"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87758055","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}
To improve the unilization ratio of covering search by multiple missiles, a novel search method based on virtual aiming points is proposed. The models of the area covering search method for different number of missiles are presented and meanwhile, a statistical simulation model of the method is presented. The unilization ratio is introduced for comparison and analysis between the traditional parallel search method and the novel. The results showed that, comparing with the parallel search method, the interception probability and the unilization ratio are both obviously improved by conducting the novel method presented in this paper with the same number of missiles.
{"title":"Research on Area Covering Search Based on Virtual Aiming Points by Multiple Missiles","authors":"Shukan Liu, Hangyu Wang, Faxing Lu, Yang Lu","doi":"10.1109/IHMSC.2015.35","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.35","url":null,"abstract":"To improve the unilization ratio of covering search by multiple missiles, a novel search method based on virtual aiming points is proposed. The models of the area covering search method for different number of missiles are presented and meanwhile, a statistical simulation model of the method is presented. The unilization ratio is introduced for comparison and analysis between the traditional parallel search method and the novel. The results showed that, comparing with the parallel search method, the interception probability and the unilization ratio are both obviously improved by conducting the novel method presented in this paper with the same number of missiles.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"29 1","pages":"509-513"},"PeriodicalIF":0.0,"publicationDate":"2015-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87865193","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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