Pub Date : 2011-06-21DOI: 10.1109/ICIEA.2011.5975559
Tai Nguyen Huu, H. Thi, Chon-Tam Le Dinh
In this paper, Advanced Adaptive Image Coding (AAIC) is proposed to increase compression performance for frame delay memory applications. The AAIC contains two techniques to improve the quality of decompressed images. The first is a Mean Adaptive Image Coding (MAIC) to reduce the impact of noise on image compression. The second is a Content-based Bit Exchange Technique (CBBET) to provide an adaptive bit distribution which improves the image quality while preserving fixed word length compression feature. Experimental results show that the proposed AAIC outperforms other coding algorithms used in the same type of application.
{"title":"Content-based bit exchange techniques for frame delay memory application","authors":"Tai Nguyen Huu, H. Thi, Chon-Tam Le Dinh","doi":"10.1109/ICIEA.2011.5975559","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975559","url":null,"abstract":"In this paper, Advanced Adaptive Image Coding (AAIC) is proposed to increase compression performance for frame delay memory applications. The AAIC contains two techniques to improve the quality of decompressed images. The first is a Mean Adaptive Image Coding (MAIC) to reduce the impact of noise on image compression. The second is a Content-based Bit Exchange Technique (CBBET) to provide an adaptive bit distribution which improves the image quality while preserving fixed word length compression feature. Experimental results show that the proposed AAIC outperforms other coding algorithms used in the same type of application.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121300585","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 : 2011-06-21DOI: 10.1109/ICIEA.2011.5975898
Y. Zhao, Chunyan Miao, M. Ma
Medium access control (MAC) protocol plays a crucial role in energy-efficiency, latency reduction and throughput for sensor networks. However, it is nontrivial to achieve good performance in different facets of metrics at the same time. In this paper, we present the performance of an Adaptive Scheduling MAC (AS-MAC) protocol with different Adaptive Scheduling period (AS-period) in multi-hop networks. AS-MAC achieves very good performance in energy-efficiency, end-to-end delay and packet delivery ratio (PDR) in different traffic loads, especially in the scenario of high traffic load. AS-MAC also exhibits adaptability to the different traffic loads with an adjustable AS-period.
{"title":"Performance of Adaptive Scheduling MAC (AS-MAC) protocol with different AS-period in multi-hop networks","authors":"Y. Zhao, Chunyan Miao, M. Ma","doi":"10.1109/ICIEA.2011.5975898","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975898","url":null,"abstract":"Medium access control (MAC) protocol plays a crucial role in energy-efficiency, latency reduction and throughput for sensor networks. However, it is nontrivial to achieve good performance in different facets of metrics at the same time. In this paper, we present the performance of an Adaptive Scheduling MAC (AS-MAC) protocol with different Adaptive Scheduling period (AS-period) in multi-hop networks. AS-MAC achieves very good performance in energy-efficiency, end-to-end delay and packet delivery ratio (PDR) in different traffic loads, especially in the scenario of high traffic load. AS-MAC also exhibits adaptability to the different traffic loads with an adjustable AS-period.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121424040","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 : 2011-06-21DOI: 10.1109/ICIEA.2011.5975755
Xingming Wu, Fanghong Guo, Weihai Chen, Jingmeng Liu
This paper presents an open-loop control system design for a permanent magnet spherical motor (PMSM). The proposed spherical motor consists of a ball-shaped rotor with a full circle of 8 permanent magnet (PM) poles and a spherical-shell-like stator with two layers of circumferential 24 air-core coils. Based on the torque model of the PMSM, the relationship between current input and torque output can be demonstrated. We design the open-loop controller by decoupling the spinning motion control, which is based on the torque equilibrium theory, from the inclination motion control. Two types of spinning motion control models are proposed and analyzed. The open-loop controller can make the PMSM have the ability to spin continuously and tilt to certain angle. The experiment of open-loop control system based on a personal computer and current controller is designed to validate the control method at last.
{"title":"Design of open-loop controller for permanent magnet spherical motor","authors":"Xingming Wu, Fanghong Guo, Weihai Chen, Jingmeng Liu","doi":"10.1109/ICIEA.2011.5975755","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975755","url":null,"abstract":"This paper presents an open-loop control system design for a permanent magnet spherical motor (PMSM). The proposed spherical motor consists of a ball-shaped rotor with a full circle of 8 permanent magnet (PM) poles and a spherical-shell-like stator with two layers of circumferential 24 air-core coils. Based on the torque model of the PMSM, the relationship between current input and torque output can be demonstrated. We design the open-loop controller by decoupling the spinning motion control, which is based on the torque equilibrium theory, from the inclination motion control. Two types of spinning motion control models are proposed and analyzed. The open-loop controller can make the PMSM have the ability to spin continuously and tilt to certain angle. The experiment of open-loop control system based on a personal computer and current controller is designed to validate the control method at last.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121621812","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}
A novel power converter configuration of a three-phase soft-switching rectifier comprising four main switches and four auxiliary switches is proposed in this paper. The reduction in number of main switches can also increase the reliability because the control circuits and the auxiliary circuits are thereby reduced to two sets. All main switches in the proposed rectifier operate at zero voltage switching (ZVS) turn-on, while the auxiliary switches operate at zero current switching (ZCS) turn-off. Moreover, the proposed rectifier achieves a near unity power factor, sinusoidal input currents, a regulated output voltage and a bidirectional power flow capability. Finally, a small-signal model is derived and a feed-forward control is presented to achieve almost zero output impedance and zero audio susceptibility. Some experimental results of the proposed soft-switching rectifier, rated 400 W and operated at 40 kHz, are presented for verification.
{"title":"Analysis and design of a novel three-phase soft-switching rectifier","authors":"Maoh-Chin Jiang, Shyh-Shing Perng, Geng-Bin Tu, Jing-Jhu Jhan, Wei-Shiang Wang, Huang-Kai Fu","doi":"10.1109/ICIEA.2011.5975768","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975768","url":null,"abstract":"A novel power converter configuration of a three-phase soft-switching rectifier comprising four main switches and four auxiliary switches is proposed in this paper. The reduction in number of main switches can also increase the reliability because the control circuits and the auxiliary circuits are thereby reduced to two sets. All main switches in the proposed rectifier operate at zero voltage switching (ZVS) turn-on, while the auxiliary switches operate at zero current switching (ZCS) turn-off. Moreover, the proposed rectifier achieves a near unity power factor, sinusoidal input currents, a regulated output voltage and a bidirectional power flow capability. Finally, a small-signal model is derived and a feed-forward control is presented to achieve almost zero output impedance and zero audio susceptibility. Some experimental results of the proposed soft-switching rectifier, rated 400 W and operated at 40 kHz, are presented for verification.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126491682","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 : 2011-06-21DOI: 10.1109/ICIEA.2011.5975551
Chih‐Hong Lin, R. Wu, C. Chong
In this paper an adaptive backstepping control system is proposed to control the rotor position of a permanent magnet synchronous motor (PMSM) drive using recurrent fuzzy neural network (RFNN). First, the field-oriented mechanism is applied to formulate the dynamic equation of the PMSM servo drive. Then, an adaptive backstepping approach is proposed to compensate the uncertainties in the motion control system. With the proposed adaptive backstepping control system, the rotor position of the PMSM drive possesses the advantages of good transient control performance and robustness to uncertainties for the tracking of periodic reference trajectories. Moreover, to further increase the robustness of the PMSM drive, a RFNN uncertainty observer is proposed to estimate the required lumped uncertainty in the adaptive backstepping control system. In addition, an on-line parameter training methodology, which is derived using the gradient descent method, is proposed to increase the learning capability of the RFNN. The effectiveness of the proposed control scheme is verified by experimental results.
{"title":"Adaptive backstepping control for a PMSM drive using RFNN uncertainty observer","authors":"Chih‐Hong Lin, R. Wu, C. Chong","doi":"10.1109/ICIEA.2011.5975551","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975551","url":null,"abstract":"In this paper an adaptive backstepping control system is proposed to control the rotor position of a permanent magnet synchronous motor (PMSM) drive using recurrent fuzzy neural network (RFNN). First, the field-oriented mechanism is applied to formulate the dynamic equation of the PMSM servo drive. Then, an adaptive backstepping approach is proposed to compensate the uncertainties in the motion control system. With the proposed adaptive backstepping control system, the rotor position of the PMSM drive possesses the advantages of good transient control performance and robustness to uncertainties for the tracking of periodic reference trajectories. Moreover, to further increase the robustness of the PMSM drive, a RFNN uncertainty observer is proposed to estimate the required lumped uncertainty in the adaptive backstepping control system. In addition, an on-line parameter training methodology, which is derived using the gradient descent method, is proposed to increase the learning capability of the RFNN. The effectiveness of the proposed control scheme is verified by experimental results.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122308889","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 : 2011-06-21DOI: 10.1109/ICIEA.2011.5975724
Y. Hsieh, C. Moo, Tsung-Jung Tsai, K. Ng
This paper investigates the high-frequency discharging characteristics for the lithium iron phosphate battery. The investigation focuses on the effect of the high-frequency current on the dischargeable capacity of the battery. Included are the current profiles of triangle, saw-tooth, and trapezoidal waves, which are produced from commonly used DC-DC converters. Experimental results show that the discharging current with a higher frequency or a sharper uprising waveform has less dischargeable capacity. On the other hand, the converter current resonating into and out from the battery results in additional losses.
{"title":"High-frequency discharging characteristics of LiFePO4 battery","authors":"Y. Hsieh, C. Moo, Tsung-Jung Tsai, K. Ng","doi":"10.1109/ICIEA.2011.5975724","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975724","url":null,"abstract":"This paper investigates the high-frequency discharging characteristics for the lithium iron phosphate battery. The investigation focuses on the effect of the high-frequency current on the dischargeable capacity of the battery. Included are the current profiles of triangle, saw-tooth, and trapezoidal waves, which are produced from commonly used DC-DC converters. Experimental results show that the discharging current with a higher frequency or a sharper uprising waveform has less dischargeable capacity. On the other hand, the converter current resonating into and out from the battery results in additional losses.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125713623","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 : 2011-06-21DOI: 10.1109/ICIEA.2011.5975713
Xiaobin Zhang, Y. Zhong
According to the defect of the instantaneous reactive power theory under nonsinusoidal voltage condition, the rotating frame detection algorithm is proposed. The reactive current can be detected accurately under nonsinusoidal voltage condition by the detection algorithm. Compared with other rotating frame detection algorithms, the algorithm only need the voltage and current instantaneous values instead of the voltage phase angle. This effectively simplifies the hardware detection circuit.
{"title":"A new approach to the reactive current detection in three-phase systems under nonsinusoidal voltage condition","authors":"Xiaobin Zhang, Y. Zhong","doi":"10.1109/ICIEA.2011.5975713","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975713","url":null,"abstract":"According to the defect of the instantaneous reactive power theory under nonsinusoidal voltage condition, the rotating frame detection algorithm is proposed. The reactive current can be detected accurately under nonsinusoidal voltage condition by the detection algorithm. Compared with other rotating frame detection algorithms, the algorithm only need the voltage and current instantaneous values instead of the voltage phase angle. This effectively simplifies the hardware detection circuit.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"19 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126071725","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 : 2011-06-21DOI: 10.1109/ICIEA.2011.5975933
Wei Wang
For the purpose of rejecting uncertainty and/or disturbance and regulating the system with high accuracy, we propose a double-mechanism method. The method can be summarized as follows: Firstly, for the system which contains uncertainties and/or disturbances, we design the integral feedback mechanism with a variable gain so that the disturbances and uncertainties can be rejected. Secondly, for the remaining part of the system, we choose the proper state feedback mechanism to ensure the required performance. Theoretical analysis is provided to guarantee the stability or even optimization of the relevant control system. Comparative analysis is also provided to show the advantages of the method. And simulation results for certain kinds of industrial systems indicate the effectiveness of the method.
{"title":"A double-mechanism strategy of control systems for improving the accuracy of output regulation","authors":"Wei Wang","doi":"10.1109/ICIEA.2011.5975933","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975933","url":null,"abstract":"For the purpose of rejecting uncertainty and/or disturbance and regulating the system with high accuracy, we propose a double-mechanism method. The method can be summarized as follows: Firstly, for the system which contains uncertainties and/or disturbances, we design the integral feedback mechanism with a variable gain so that the disturbances and uncertainties can be rejected. Secondly, for the remaining part of the system, we choose the proper state feedback mechanism to ensure the required performance. Theoretical analysis is provided to guarantee the stability or even optimization of the relevant control system. Comparative analysis is also provided to show the advantages of the method. And simulation results for certain kinds of industrial systems indicate the effectiveness of the method.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"8 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114111820","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 : 2011-06-21DOI: 10.1109/ICIEA.2011.5975932
Yong-yu Wang, Q. Sun
This paper proposes a sliding-mode cloud hybrid controller for nonlinear systems with uncertainty and disturbance. The proposed sliding-mode cloud hybrid controller is a combination of sliding-mode controller (SMC) and cloud controller, which inherits the benefits of these two methods. The cloud controller, with the sliding-mode function as its input, is used to replace the discontinuous switch control part in SMC to alleviate the chattering phenomenon effectively. The design procedure of the proposed controller is described in detail. The Lyapunov stability method is adopted to guarantee the convergence condition. A Genesio chaotic system is used to illustrate the feasibility and effectiveness of the proposed method. The simulation results show that the proposed controller drives the chaotic system to a desired state trajectory in spite of system uncertainties and external disturbances.
{"title":"Design of sliding-mode cloud hybrid controller for uncertain nonlinear systems","authors":"Yong-yu Wang, Q. Sun","doi":"10.1109/ICIEA.2011.5975932","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975932","url":null,"abstract":"This paper proposes a sliding-mode cloud hybrid controller for nonlinear systems with uncertainty and disturbance. The proposed sliding-mode cloud hybrid controller is a combination of sliding-mode controller (SMC) and cloud controller, which inherits the benefits of these two methods. The cloud controller, with the sliding-mode function as its input, is used to replace the discontinuous switch control part in SMC to alleviate the chattering phenomenon effectively. The design procedure of the proposed controller is described in detail. The Lyapunov stability method is adopted to guarantee the convergence condition. A Genesio chaotic system is used to illustrate the feasibility and effectiveness of the proposed method. The simulation results show that the proposed controller drives the chaotic system to a desired state trajectory in spite of system uncertainties and external disturbances.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116706443","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 : 2011-06-21DOI: 10.1109/ICIEA.2011.5975875
Renjie He, S. Luo, Zhanrong Jing, Yangyu Fan
Image enhancement is one of the most important techniques in digital imaging processing fields. Traditional global histogram equalization usually causes excessive contrast enhancement while local histogram equalization may cause block effect. To overcome these problems, a new method for image contrast enhancement is developed. The novelty is that the weighted average of histogram equalization and exponential transformation are combined and the level of the contrast improvement is adjustable by changing the weighting coefficients. The proposed algorithm not only achieved adjustable contrast enhancement, for color image, it also weakened the situation of lacking color due to the risen of intensity, thus increasing the image saturation. Experimental results show that the proposed algorithm has good performance on enhancing contrast and color for a majority of images mostly taken by the authors.
{"title":"Adjustable weighting image contrast enhancement algorithm and its implementation","authors":"Renjie He, S. Luo, Zhanrong Jing, Yangyu Fan","doi":"10.1109/ICIEA.2011.5975875","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975875","url":null,"abstract":"Image enhancement is one of the most important techniques in digital imaging processing fields. Traditional global histogram equalization usually causes excessive contrast enhancement while local histogram equalization may cause block effect. To overcome these problems, a new method for image contrast enhancement is developed. The novelty is that the weighted average of histogram equalization and exponential transformation are combined and the level of the contrast improvement is adjustable by changing the weighting coefficients. The proposed algorithm not only achieved adjustable contrast enhancement, for color image, it also weakened the situation of lacking color due to the risen of intensity, thus increasing the image saturation. Experimental results show that the proposed algorithm has good performance on enhancing contrast and color for a majority of images mostly taken by the authors.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125299450","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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