2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)最新文献

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Speaker models reduction for optimized telephony text-prompted speaker verification 扬声器模型减少优化电话文本提示扬声器验证
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-06-25 DOI: 10.1109/CCECE.2015.7129497
Elaheh Kalantari, H. Sameti, Hossein Zeinali
{"title":"Speaker models reduction for optimized telephony text-prompted speaker verification","authors":"Elaheh Kalantari, H. Sameti, Hossein Zeinali","doi":"10.1109/CCECE.2015.7129497","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129497","url":null,"abstract":"In this article a new scheme is proposed to use mean supervector in text-prompted speaker verification system. In this scheme, for each month name a subsystem is constructed and a final score based on passphrase is computed by the combination of the scores of these subsystems. Results from the telephony dataset of Persian month names show that the proposed method significantly reduces EER in comparison with the-State-of-the-art State-GMM-MAP method. Furthermore, it is shown that based on training set and testing set we can use 12 models per speaker instead of 220. Therefore, this scheme reduces EER and computational burden. In addition, the use of HMM instead of GMM as words' model improves the performance of the system. In the best case, EER is reduced by 32.3%.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133068763","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}
引用次数: 1
Using a hybrid LDO regulator and a switching regulator circuit to reduce the power consumption in the light load operation of a server motherboard 采用混合LDO稳压器和开关稳压器电路,降低服务器主板轻负载运行时的功耗
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-06-25 DOI: 10.1109/CCECE.2015.7129334
Ying-Wen Bai, Cheng-Hung Lin
{"title":"Using a hybrid LDO regulator and a switching regulator circuit to reduce the power consumption in the light load operation of a server motherboard","authors":"Ying-Wen Bai, Cheng-Hung Lin","doi":"10.1109/CCECE.2015.7129334","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129334","url":null,"abstract":"In this paper we propose a hybrid LDO regulator and switching regulator circuit design that uses an LDO regulator instead of a switching regulator to operate in light load. By means of this method our design reduces the power consumption of a switching regulator in light load at the input terminal, and then reduces the power consumption of the server motherboard during the operation. This design includes a microcontroller Unit (MCU) which is able to initialize, detect, judge and control both regulator operations. In addition, the MCU controls both the LDO regulator and the switching regulator in order to transition between light load and heavy load.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123554491","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}
引用次数: 1
A parameter-robust sliding mode observer for speed sensorless torque control of PMSG in wind power generation system 风电系统无速度传感器PMSG转矩控制的参数鲁棒滑模观测器
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-06-25 DOI: 10.1109/CCECE.2015.7129425
Shuying Yang, Leilei Guo, L. Qi, Liuchen Chang, Xing Zhang
{"title":"A parameter-robust sliding mode observer for speed sensorless torque control of PMSG in wind power generation system","authors":"Shuying Yang, Leilei Guo, L. Qi, Liuchen Chang, Xing Zhang","doi":"10.1109/CCECE.2015.7129425","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129425","url":null,"abstract":"With the capacity of wind turbine developing towards high power, permanent magnet synchronous generator (PMSG) based direct-drive wind power generation system (WPGS) is drawing more and more attentions. In order to improve the reliability and efficiency, as well as the cost-performance ratio of this type of WPGS, speed sensorless torque control is usually demanded. The conventional mathematic models used to develop sliding mode observers (SMOs) are complicated for engineering practices and the electromagnetic torque (EMT) estimation based on current models are very sensitive to parameter mismatches. In this paper, a novel simplified mathematic model is proposed to develop an improved SMO, by which the rotor position orientation and the EMT estimation are realized conveniently and robustly. With the observer, a speed sensorless torque closed-loop control system is established. The accuracy of the observed values and the performance of the total dual-loop control system are verified with simulation and experiments.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"804 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117041522","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}
引用次数: 2
A sociality-aware online AP association algorithm based on spectral clustering 基于谱聚类的社交感知在线AP关联算法
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-06-25 DOI: 10.1109/CCECE.2015.7129382
Haibo Ni, Lei Wang, Zhenjie Yang, Ming Zhu, Feng Ding, Zhenquan Qin
{"title":"A sociality-aware online AP association algorithm based on spectral clustering","authors":"Haibo Ni, Lei Wang, Zhenjie Yang, Ming Zhu, Feng Ding, Zhenquan Qin","doi":"10.1109/CCECE.2015.7129382","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129382","url":null,"abstract":"Imbalanced load distribution among multiple APs (access points) has become a serious problem in enterprise WLANs. Load imbalance causes inefficiency of network usage and unreasonable resource allocation. We find that users tend to come and leave together, which can lead to fluctuation of network load. We propose a novel online AP allocation scheme (ASC) to keep load balanced when users come and leave together. We study the homophily of users in social network, where users with tight social relationships will have more similar network usage and more opportunity to leave in union. When users come, we collect user data first, then we adopt the spectral clustering to classify users according to the collected user data. The controller distribute users from the same cluster to different APs. Through the simulation, we find that our scheme improve the overall balancing performance by at least 22% compared with the least load first selection algorithm (LLF) and 58% compared with random selection algorithm (RS).","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132527684","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}
引用次数: 1
Quasi-linearizability of various benchmark control mechanical systems 各种基准控制机械系统的准线性化
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-05-03 DOI: 10.1109/CCECE.2015.7129410
D. Chang, Kyung-Hyun Choi
{"title":"Quasi-linearizability of various benchmark control mechanical systems","authors":"D. Chang, Kyung-Hyun Choi","doi":"10.1109/CCECE.2015.7129410","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129410","url":null,"abstract":"A mechanical system is said to be quasi-linearizable if there is a linear transform of velocity that eliminates all terms quadratic in the velocity from the equations of motion of the system. It is known that controller/observer design becomes tractable when the equations of motion of a mechanical system are in quasi-linearized form. In this paper, we examine quasi-linearizability of the following seven benchmark control mechanical systems: a planar PPR robot, the inverted pendulum on a cart, the TORA system, the mass-beam system, the Furuta pendulum, the Pendubot/Acrobot system, and a magnetic suspension system. We show that the first three of them are quasi-linearizable and the rest are not. We envision that this result will be useful in controller/observer synthesis for those quasi-linearizable systems.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117123041","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}
引用次数: 0
Remedial operations for open- and short-circuit faults of permanent magnet fault tolerant motor 永磁容错电动机开路和短路故障的补救操作
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-05-03 DOI: 10.1109/CCECE.2015.7129404
Si Binqiang, Zeng Guangshang, Zhu Jihong, J. Zongxia
{"title":"Remedial operations for open- and short-circuit faults of permanent magnet fault tolerant motor","authors":"Si Binqiang, Zeng Guangshang, Zhu Jihong, J. Zongxia","doi":"10.1109/CCECE.2015.7129404","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129404","url":null,"abstract":"Due to their concentrated windings and modular topology, permanent-magnet fault-tolerant (PMFT) motors inherently offer decoupling phases and fault-tolerant capability. According to open- and short-circuit faults, and in order to keep torque performance invariant during the faulty operation, two relevant fault tolerant strategies are separately presented, derived, analyzed and tested. The effectiveness and validity of fault-tolerance and the strategies of the motor are verified.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125193059","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}
引用次数: 1
A robust classification model with voting based feature selection for diagnosis of epilepsy 基于投票特征选择的鲁棒癫痫诊断分类模型
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-05-03 DOI: 10.1109/CCECE.2015.7129181
Ali Hassan, F. Riaz, A. Basit
{"title":"A robust classification model with voting based feature selection for diagnosis of epilepsy","authors":"Ali Hassan, F. Riaz, A. Basit","doi":"10.1109/CCECE.2015.7129181","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129181","url":null,"abstract":"It is well a known fact that neuropsychiatric disorders cause abnormalities in connectivity patterns of brain regions. Identifying and characterising these abnormalities can be exploited to get better diagnosis of neuropsychiatric diseases with help of resting state functional magnetic resonance imaging (rfMRI) data. But this is not an easy task because rfMRI produces data that has very large dimensions that will lead to curse of dimensionality problem. So it is necessary to reduce the number of features in order to get better classification accuracy. This needs a robust feature selection criterion that best describes the differences between epileptic patients and healthy control group. In this paper we present a classification model in which we introduce a voting based feature selection (VFS) approach that ensures the selection of most discriminative features by combining the capabilities of several feature selection techniques. We used AdaBoost for RBF network as a classifier to avoid over fitting. We applied this model on rfMRI-based data to discriminate between two groups. We correctly classify epileptic patients from healthy controls with 85.33% classification accuracy on a heterogeneous data set using the proposed classification model. The results presented in this paper are better than other reported results in the current literature on this dataset to the best of our knowledge confirming the effectiveness of our classification model.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126167227","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}
引用次数: 1
Photovoltaic multi-level inverters technology 光伏多级逆变器技术
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-05-03 DOI: 10.1109/CCECE.2015.7129351
S. Shehadeh, H. Aly, M. El-Hawary
{"title":"Photovoltaic multi-level inverters technology","authors":"S. Shehadeh, H. Aly, M. El-Hawary","doi":"10.1109/CCECE.2015.7129351","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129351","url":null,"abstract":"In this paper three main types of multi-level inverters are reviewed (diode-clamped, flying capacitor, and cascaded H-Bridge inverters). Different multi-level inverter topologies which are currently available on the market as far as components for the electrical integration of PV systems are also concerned. The new trends of all of these topologies are seeking to reduce the cost, the size of the inverter and the losses by reducing the number of the switches and capacitors and keeping the output voltage steps high enough at least to be similar to the previous topologies.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125500000","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}
引用次数: 9
Intelligent real-time fault diagnosis: Methodology and application 智能实时故障诊断:方法与应用
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-05-03 DOI: 10.1109/CCECE.2015.7129403
H. Marzi
{"title":"Intelligent real-time fault diagnosis: Methodology and application","authors":"H. Marzi","doi":"10.1109/CCECE.2015.7129403","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129403","url":null,"abstract":"This paper presents a methodology for application of Intelligent Systems to Fault Diagnosis for Realtime applications. Following the introduction, design of the Intelligent Diagnostic System is discussed. A case study is then, described and the design methodology is applied to the case under investigation. Results of the application of case study are discussed in detail. In this approach an Intelligent System of Artificial Neural Networks ISANN has been trained to learn malfunctions of the test system as well as healthy or standard operational status. ISANN is capable of testing the system under investigation periodically, on a prescheduled plan or on request. Upon completion of the test, condition of operation will be identified and reported with accuracy as being either under normal operation status, or faulty. In the event of a system fault, the diagnostic test identifies the exact cause of failure and the degree of system deterioration with a precision in excess of 98%. The study provides provisions for optimization of training set resulting in an expedited training stage of ISANN.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115216625","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}
引用次数: 0
Activation detection of intracardiac electrogram during atrial fibrillation based on the variance equality test 基于方差相等检验的房颤心内电图激活检测
2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE) Pub Date : 2015-05-03 DOI: 10.1109/CCECE.2015.7129308
M. H. Shariat, J. Hashemi, S. Gazor, D. Redfearn
{"title":"Activation detection of intracardiac electrogram during atrial fibrillation based on the variance equality test","authors":"M. H. Shariat, J. Hashemi, S. Gazor, D. Redfearn","doi":"10.1109/CCECE.2015.7129308","DOIUrl":"https://doi.org/10.1109/CCECE.2015.7129308","url":null,"abstract":"Performance of the algorithms which process intracardiac electrograms (IEGMs) highly depends on the accuracy of estimating the times that electrical waves pass the area under the electrodes. Estimating these activation times (ATs) from IEGMs during atrial fibrillation (AF) is extremely challenging as electrical activities of atria are very complex, non-stationary, and irregular. In this paper, we propose a new activation detector which is based on the test of the equality of variance of two sets of data. At any time t, we consider two sets of IEGM data: 1) data in a bounded interval around t, 2) data in bounded intervals around the first interval. We show that the activation zone can be extracted by comparing the variance of these two sets, i.e., we introduce a new preprocessing approach and show that it can effectively highlight activation zones of IEGMs. Our simulation results on bipolar atrial IEGMs gathered during AF confirm the efficiency of the proposed preprocessing method.","PeriodicalId":218111,"journal":{"name":"2015 IEEE 28th Canadian Conference on Electrical and Computer Engineering (CCECE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115260890","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}
引用次数: 11
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