Pub Date : 2011-06-21DOI: 10.1109/ICIEA.2011.5975946
Bo Sun, N. Dai, U. Chio, M. Wong, Chikong Wong, Sai-Weng Sin, U. Seng-Pan, R. Martins
Decoupled double synchronous reference frame Phase-locked loop (DDSRF-PLL) is able to detect the phase angle of positive sequence when the three-phase voltages are unbalanced and distorted. In this paper, it is applied to the compensation current detection algorithm of shunt active power filter (SAPF) to replace a conventional PLL. Simulation results indicate that the compensation performance could be improved under voltage unbalance and distortion. Besides, DDSRF-PLL implemented on one field-programmable gate array (FPGA) chip is proposed. When compared with widely used digital signal processors (DSPs) in power control, FPGA the proposed structure has the advantages of parallel processing and rich user-defined I/O ports so that it exhibits processing efficiency and flexibility in application.
{"title":"FPGA-based decoupled double synchronous reference frame PLL for active power filters","authors":"Bo Sun, N. Dai, U. Chio, M. Wong, Chikong Wong, Sai-Weng Sin, U. Seng-Pan, R. Martins","doi":"10.1109/ICIEA.2011.5975946","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975946","url":null,"abstract":"Decoupled double synchronous reference frame Phase-locked loop (DDSRF-PLL) is able to detect the phase angle of positive sequence when the three-phase voltages are unbalanced and distorted. In this paper, it is applied to the compensation current detection algorithm of shunt active power filter (SAPF) to replace a conventional PLL. Simulation results indicate that the compensation performance could be improved under voltage unbalance and distortion. Besides, DDSRF-PLL implemented on one field-programmable gate array (FPGA) chip is proposed. When compared with widely used digital signal processors (DSPs) in power control, FPGA the proposed structure has the advantages of parallel processing and rich user-defined I/O ports so that it exhibits processing efficiency and flexibility in application.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"16 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":"129940889","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.2011.5975983
Wei Du, Cong Wang, Zhaohui Liu
In multiphase synchronous buck converters, the parallel structure is used for the voltage and current sharing regulation loops to improve high bandwidth. Mismatch among the multiple regulation loops result in competition among voltage and current regulation loops, until one or more loops goes into saturation. Competition control approaches are designed to keep the loops from saturation and reach to a steady state operating point with all loops active adaptively. Such steady state operation can be reached adaptively even with load transients and environmental variations.
{"title":"Digital control approaches to mitigate the impact of loop competition in multiphase DC-DC converter","authors":"Wei Du, Cong Wang, Zhaohui Liu","doi":"10.1109/ICIEA.2011.5975983","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975983","url":null,"abstract":"In multiphase synchronous buck converters, the parallel structure is used for the voltage and current sharing regulation loops to improve high bandwidth. Mismatch among the multiple regulation loops result in competition among voltage and current regulation loops, until one or more loops goes into saturation. Competition control approaches are designed to keep the loops from saturation and reach to a steady state operating point with all loops active adaptively. Such steady state operation can be reached adaptively even with load transients and environmental variations.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"66-69 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":"131030172","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.2011.5975744
Ming-hao Tan, Ren-lai Yu, Shu-jiang Li, Xiang-dong Wang
In this paper we propose a multipath routing protocol that considers energy saving and wireless interference. We design the linking cost function that considers node remaining energy and number of hops to the destination node. Two paths are established between source and destination nodes, by using the path discovery process that finds the next hop node which minimize the linking cost. In the proposed routing protocol, interfering nodes of the discovered path are marked out and not to take part in subsequent routing. In this way the quality of wireless communication is improved because the effects of wireless interference can be reduced as much as possible. We design the load balancing algorithm that balances the network loads on the established paths. In this way data packets are distributed on many nodes and the node energy consumption is more balanced for entire wireless network. The proposed protocol is simulated in NS2 software. Simulation results are given that compare this protocol to that in the literature. The conclusion is that by using this protocol the total network energy consumption is lower and the network lifetime is longer.
{"title":"Multipath routing protocol with load balancing in WSN considering interference","authors":"Ming-hao Tan, Ren-lai Yu, Shu-jiang Li, Xiang-dong Wang","doi":"10.1109/ICIEA.2011.5975744","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975744","url":null,"abstract":"In this paper we propose a multipath routing protocol that considers energy saving and wireless interference. We design the linking cost function that considers node remaining energy and number of hops to the destination node. Two paths are established between source and destination nodes, by using the path discovery process that finds the next hop node which minimize the linking cost. In the proposed routing protocol, interfering nodes of the discovered path are marked out and not to take part in subsequent routing. In this way the quality of wireless communication is improved because the effects of wireless interference can be reduced as much as possible. We design the load balancing algorithm that balances the network loads on the established paths. In this way data packets are distributed on many nodes and the node energy consumption is more balanced for entire wireless network. The proposed protocol is simulated in NS2 software. Simulation results are given that compare this protocol to that in the literature. The conclusion is that by using this protocol the total network energy consumption is lower and the network lifetime is longer.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"65 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":"130671556","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.2011.5975545
Zhaoxia Wang, C. S. Chang, Yifan Zhang
This paper studies the stator currents collected from several inverter-fed laboratory induction motors and proposes a new feature based frequency domain analysis method for performing the detection of induction motor faults, such as the broken rotor-bar or bearing fault. The mathematical formulation is presented to calculate the features, which are called FFT-ICA features in this paper. The obtained FFT-ICA features are normalized by using healthy motor as benchmarks to establish a feature database for fault detection. Compare with conventional frequency-domain analysis method, no prior knowledge of the motor parameters or other measurements are required for calculating features. Only one phase stator current waveforms are enough to provide consistent diagnosis of inverter-fed induction motors at different frequencies. The proposed method also outperforms our previous time domain analysis method.
{"title":"A feature based frequency domain analysis algorithm for fault detection of induction motors","authors":"Zhaoxia Wang, C. S. Chang, Yifan Zhang","doi":"10.1109/ICIEA.2011.5975545","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975545","url":null,"abstract":"This paper studies the stator currents collected from several inverter-fed laboratory induction motors and proposes a new feature based frequency domain analysis method for performing the detection of induction motor faults, such as the broken rotor-bar or bearing fault. The mathematical formulation is presented to calculate the features, which are called FFT-ICA features in this paper. The obtained FFT-ICA features are normalized by using healthy motor as benchmarks to establish a feature database for fault detection. Compare with conventional frequency-domain analysis method, no prior knowledge of the motor parameters or other measurements are required for calculating features. Only one phase stator current waveforms are enough to provide consistent diagnosis of inverter-fed induction motors at different frequencies. The proposed method also outperforms our previous time domain analysis method.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"115 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":"132500820","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.2011.5975710
Wang Liguo, Wang Nianxing, Deng Hui, X. Dianguo, W. Yi
Considering the influence of surge current and voltage flickering on the distribution power system induced by medium frequency arc furnaces, the Hybrid Active Power Filter (HAPF) is applied to suppress the harmonics and compensate reactive power of 10kV bus of a steel mill. In order to study superiority effect and stability of HAPF, the Graph Theory is used to analyze its complex topology. By Graph Theory (GT) the HAPF can be described by several nodes that are connected by the power flows. Considering the important effect of LCL-filter of APF for suppressing harmonics such as high-frequency switch harmonic, its parameters are calculated by derived dynamic differential equations. Simulation and actual measure results show that the idea of combining the Graph Theory with dynamics modeling method is an effective path to design HAPF.
{"title":"Application of Graph Theory in dynamic analysis of parameters of HAPF","authors":"Wang Liguo, Wang Nianxing, Deng Hui, X. Dianguo, W. Yi","doi":"10.1109/ICIEA.2011.5975710","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975710","url":null,"abstract":"Considering the influence of surge current and voltage flickering on the distribution power system induced by medium frequency arc furnaces, the Hybrid Active Power Filter (HAPF) is applied to suppress the harmonics and compensate reactive power of 10kV bus of a steel mill. In order to study superiority effect and stability of HAPF, the Graph Theory is used to analyze its complex topology. By Graph Theory (GT) the HAPF can be described by several nodes that are connected by the power flows. Considering the important effect of LCL-filter of APF for suppressing harmonics such as high-frequency switch harmonic, its parameters are calculated by derived dynamic differential equations. Simulation and actual measure results show that the idea of combining the Graph Theory with dynamics modeling method is an effective path to design HAPF.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"3 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":"130809051","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.2011.5975563
J. Zhang, W. Huang, J. Zhou, T. Yang, J. Liu, Y. Su, C. Chui, S. Chang
One challenge in laparoscopic cholecystectomy surgery simulation is to construct a fast and accurate deformable gallbladder model. This paper proposed an improved multi-layer mass-spring modeling method which can adapt well to the built-in accelerating algorithms in PhysX-engine of GPU. A multi-layer mass-spring model was constructed based on the surface mesh of a gallbladder. The inner layers of the mass-spring model were generated using more geometrical information than the previous method [17]. The parameters of the springs were configured based on the biomechanical properties of gallbladder to ensure the realism of the deformation results. Preliminary experiments demonstrate that our model can achieve better results in terms of both visual perception and time performance.
{"title":"Gallbladder modeling and simulation in laparoscopic cholecystectomy","authors":"J. Zhang, W. Huang, J. Zhou, T. Yang, J. Liu, Y. Su, C. Chui, S. Chang","doi":"10.1109/ICIEA.2011.5975563","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975563","url":null,"abstract":"One challenge in laparoscopic cholecystectomy surgery simulation is to construct a fast and accurate deformable gallbladder model. This paper proposed an improved multi-layer mass-spring modeling method which can adapt well to the built-in accelerating algorithms in PhysX-engine of GPU. A multi-layer mass-spring model was constructed based on the surface mesh of a gallbladder. The inner layers of the mass-spring model were generated using more geometrical information than the previous method [17]. The parameters of the springs were configured based on the biomechanical properties of gallbladder to ensure the realism of the deformation results. Preliminary experiments demonstrate that our model can achieve better results in terms of both visual perception and time performance.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"92 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":"130827928","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.2011.5975948
Ke Wang, Feng-guang Zhou, Jianye Chen
This paper proposes a novel control strategy for parallel hybrid active power filter (PHAPF) which adopted generalized integrator method to separate specific harmonic. As a result, the active and passive part of PHAPF only compensates their own part of harmonic, avoiding circumfluence between passive part and active part. The passive part only compensates the lower-order harmonic, while the active part compensates the higher-order. Thus, the compensation capacity of active part is greatly reduced, and the probable resonance between passive part and power system would be avoided. Contradistinctive experiments are given to verify the novel control strategy could achieve perfect effect.
{"title":"A novel control strategy of parallel hybrid active power filter","authors":"Ke Wang, Feng-guang Zhou, Jianye Chen","doi":"10.1109/ICIEA.2011.5975948","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975948","url":null,"abstract":"This paper proposes a novel control strategy for parallel hybrid active power filter (PHAPF) which adopted generalized integrator method to separate specific harmonic. As a result, the active and passive part of PHAPF only compensates their own part of harmonic, avoiding circumfluence between passive part and active part. The passive part only compensates the lower-order harmonic, while the active part compensates the higher-order. Thus, the compensation capacity of active part is greatly reduced, and the probable resonance between passive part and power system would be avoided. Contradistinctive experiments are given to verify the novel control strategy could achieve perfect effect.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"41 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":"131692882","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.2011.5975541
A. Fong, B. Fong, G. Hong
The soaring number of diabetes patients in many metropolitan cities makes mass-produced wearable glucose meters a very profit sector of the medical device industry. Two vitally important factors in the manufacturing of consumer medical devices are reliability and safety. These devices need to be manufactured at the lowest possible cost and must operate predictably according to design specifications. Since each device produced from one production line will be subject to different operating environment during its useful lifetime, this paper seeks to explore the methodology for optimizing reliability with condition-based monitoring of an individual device.
{"title":"Environmental impact on the reliability of mass produced consumer glucose meters","authors":"A. Fong, B. Fong, G. Hong","doi":"10.1109/ICIEA.2011.5975541","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975541","url":null,"abstract":"The soaring number of diabetes patients in many metropolitan cities makes mass-produced wearable glucose meters a very profit sector of the medical device industry. Two vitally important factors in the manufacturing of consumer medical devices are reliability and safety. These devices need to be manufactured at the lowest possible cost and must operate predictably according to design specifications. Since each device produced from one production line will be subject to different operating environment during its useful lifetime, this paper seeks to explore the methodology for optimizing reliability with condition-based monitoring of an individual device.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"98 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":"128794083","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.2011.5975762
Heping Chen, Jizhong Xiao
Industrial robots used to perform assembly tasks are still a small portion of total robot sales each year. One of the main reasons is that it is difficult for conventional industrial robots to adjust to any sort of change. This paper describes the development and implementation of a robotic system to perform an assembly task of inserting a printed circuit board (PCB) into an edge connector socket using a robust control strategy. Because the task involves compliant manipulation in which a substantial force is needed to accomplish the insertion operation and there are some dynamic constraints from the environment, this task is quite challenging. A variable structure impedance control algorithm is used to perform the assembly process. The dynamic model of the robotic system is developed and the dynamic parameters are identified. Experiments were performed to validate the methodology. Experimental results shows that the robust control algorithm can deal with parameter uncertainties in the dynamic model, thus achieve better performance than the model based control method. An abnormal case is also investigated to demonstrate that the robust impedance control method can deal with the abnormal situation without damaging the system and part, while pure position control method may cause damage. This strategy can also be used in other similar assembly processes with compliant manipulation.
{"title":"Robust compliant assembly automation using an industrial robot","authors":"Heping Chen, Jizhong Xiao","doi":"10.1109/ICIEA.2011.5975762","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975762","url":null,"abstract":"Industrial robots used to perform assembly tasks are still a small portion of total robot sales each year. One of the main reasons is that it is difficult for conventional industrial robots to adjust to any sort of change. This paper describes the development and implementation of a robotic system to perform an assembly task of inserting a printed circuit board (PCB) into an edge connector socket using a robust control strategy. Because the task involves compliant manipulation in which a substantial force is needed to accomplish the insertion operation and there are some dynamic constraints from the environment, this task is quite challenging. A variable structure impedance control algorithm is used to perform the assembly process. The dynamic model of the robotic system is developed and the dynamic parameters are identified. Experiments were performed to validate the methodology. Experimental results shows that the robust control algorithm can deal with parameter uncertainties in the dynamic model, thus achieve better performance than the model based control method. An abnormal case is also investigated to demonstrate that the robust impedance control method can deal with the abnormal situation without damaging the system and part, while pure position control method may cause damage. This strategy can also be used in other similar assembly processes with compliant manipulation.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"83 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":"126761413","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.2011.5975684
Jun Yao, Yu Xiao, Xin Wang
A new method for optimization control problem based on generalized work principle of optimal control principle is presented. The method of estimating mathematical model with the more precise ballistic parameters is obtained. So solution to optimum control of a non-linear system by criterion of generalized activity is introduced. A universal computing method in construction of optimum control MLRS is an algorithm with forecasting model.
{"title":"Application of generalized activity criterion in optimum control MLRS","authors":"Jun Yao, Yu Xiao, Xin Wang","doi":"10.1109/ICIEA.2011.5975684","DOIUrl":"https://doi.org/10.1109/ICIEA.2011.5975684","url":null,"abstract":"A new method for optimization control problem based on generalized work principle of optimal control principle is presented. The method of estimating mathematical model with the more precise ballistic parameters is obtained. So solution to optimum control of a non-linear system by criterion of generalized activity is introduced. A universal computing method in construction of optimum control MLRS is an algorithm with forecasting model.","PeriodicalId":304500,"journal":{"name":"2011 6th IEEE Conference on Industrial Electronics and Applications","volume":"68 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":"123240376","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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