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APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems最新文献

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On the design of a power conversion circuit 关于电源转换电路的设计
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746080
Mei Jiao, Yongsheng Yin, Shangquan Liang, Honghui Deng
{"title":"On the design of a power conversion circuit","authors":"Mei Jiao, Yongsheng Yin, Shangquan Liang, Honghui Deng","doi":"10.1109/APCCAS.2008.4746080","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746080","url":null,"abstract":"A kind of power conversion circuit, which converts positive voltage into negative one is presented according to the principle of negative voltage charge pump, so the DC output voltage is doubled. Factors affecting the speed and accuracy of MOS switches are fully considered, and a charge pump with MOS switches working in linear region is designed, avoiding the problem of threshold voltage drop. By single positive power supply, a non-overlapping clock is generated skillfully by changing switching threshold voltage of the inverters, to drive the MOS switches correctly with positive and negative voltage. The simulation results based on CMOS 0.35 mum technology show that, at 1 MHz refresh frequency, the circuit converts +1.5 V to -1.5 V, with error less than 0.2%, and setup time less than 20 mus. Besides, the circuit is less limited by the supply voltage and refresh frequency, and is not sensitive to the variations of process.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121999925","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: 3
Image spatial diffusion on GPUs gpu上的图像空间扩散
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746097
Lihua Zhu, Charles Wang, Guangfei Zhu, Bo Han, Heng Wang, Pei Huang, Enhua Wu
{"title":"Image spatial diffusion on GPUs","authors":"Lihua Zhu, Charles Wang, Guangfei Zhu, Bo Han, Heng Wang, Pei Huang, Enhua Wu","doi":"10.1109/APCCAS.2008.4746097","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746097","url":null,"abstract":"Image spatial diffusion targets on blurring small discontinuities while sharpening distinct edges. We propose two GPU-based methods to efficient generate content-aware spatial diffused images. In the first method, we apply an enhanced bilateral filter on the input image. Our filter adopts a spatial weight kernel in the form of an inverted Gaussian. This inverted-Gaussian-spatial bilateral filter (IGSB) can remove small spots in large smooth areas more efficiently than Gaussian bilateral filter that are commonly used. In the second method, we present a fast approximation of mean-shift algorithm on GPUs. Considering the parallel nature of GPUs, the process of mean-shift kernel density estimation is modified and improved to achieve satisfied color image diffusion effects.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122112585","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: 4
Adjustable low consumption circuit for monitorization of power source voltages in a SoC 用于监控SoC电源电压的可调低功耗电路
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746038
Rodrigo Duarte, J. Paisana, Marcelino B. Santos, Floriberto A. Lima
{"title":"Adjustable low consumption circuit for monitorization of power source voltages in a SoC","authors":"Rodrigo Duarte, J. Paisana, Marcelino B. Santos, Floriberto A. Lima","doi":"10.1109/APCCAS.2008.4746038","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746038","url":null,"abstract":"This paper proposes an architecture for a power good comparator (PGC) designed to be used in the monitorization of supply voltages of a system-on-chip (SoC). The architecture includes a string of resistors, a comparator, a programmable debouncer and two multiplexers. This architecture was design for very low power consumption and to monitor 4 VDDs. I was implemented using TSMC 65 nm CMOS technology for VDD values of 0.9, 1.2, 1.8 and 3.3 V, with 8 programmable levels of debouncing from 3.2 mus to 32.4 mus. The PGC maximum consumption is 3.54 muA. The output signal presents a digitally adjustable hysteresis curve, with a high threshold voltage of 93% and a low threshold voltage of 90% of VDD. Practical implementation details are presented, namely the requirement for level-converters and for a bulk bias selector in the input multiplexer.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122198818","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
Dynamic secondary arc analysis and simulation research under different line model 不同线路模型下的动态二次电弧分析与仿真研究
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746005
Lixia Zhou, Z. Yin, Xiangning Xiao, Y. Tan
{"title":"Dynamic secondary arc analysis and simulation research under different line model","authors":"Lixia Zhou, Z. Yin, Xiangning Xiao, Y. Tan","doi":"10.1109/APCCAS.2008.4746005","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746005","url":null,"abstract":"In the extra high voltage (EHV) transmission system, the transient single-phase to ground faults are the most frequent to occur. Even after the opening of breakers in the two sides of the fault line, an induced current still exists in the arc because of the electrostatic and the electromagnetic coupling from the other two sound phases. Along with the enhancement of the voltage grade, the influence of the secondary arc becomes more and more, and may probably lead to the failure of the reclosing if the secondary arc is not extinguished promptly. In this paper, the dynamic secondary arc model (including recovery voltage and the secondary arc current) in single-phase asymmetric breaking is established based on the distribution parameters of EHV long-line. The method of twice-mode transformation is adopted to calculate the steady-state value of the secondary arc current and recovery voltage. Furthermore, the affects of different overhead line models on the secondary arc current are also analyzed through the real time digital simulation.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128746157","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
A novel inter-area oscillation damping design based on wide area measurements 基于广域测量的新型区域间振荡阻尼设计
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746137
Zhuxin Li, Bonian Shi, Yingduo Han
{"title":"A novel inter-area oscillation damping design based on wide area measurements","authors":"Zhuxin Li, Bonian Shi, Yingduo Han","doi":"10.1109/APCCAS.2008.4746137","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746137","url":null,"abstract":"Based on modal analysis, this paper analyzes the shortcoming existing in the modal observability of the control performance of traditional PSS (power system stabilizer). This is further explained by transfer function zero action. To tackle this problem, wide area measurement is adopted as feedback signals to improves the modal observability, and thus damp the inter-area oscillation. Finally, eigenvalue analysis is made on a typical three area interconnected power system to test the performance of different controller and wide area measurement based controller is proved to be effective.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128681349","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
Visualization tool for transient stability monitoring of bulk power systems based on DSR 基于DSR的大容量电力系统暂态稳定监测可视化工具
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746416
Yuan Zeng, Wei Wei, Jinli Zhao, H. Jia
{"title":"Visualization tool for transient stability monitoring of bulk power systems based on DSR","authors":"Yuan Zeng, Wei Wei, Jinli Zhao, H. Jia","doi":"10.1109/APCCAS.2008.4746416","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746416","url":null,"abstract":"Dynamic security region (DSR) gives power system engineers systematic and global information about the feasible operation region. This paper is a result of an investigation into the use of DSR concept and its effective application in bulk power systems. It particularly concerns with developing a software-based tool for the transient stability monitoring in the on-line operation environment. A practical DSR solving method based on massively parallel computer clusters is described, and a new software package, named power system dynamic security region (PSDSR) is developed. Following a brief discussion about the main requirements, the paper gives a summary of the development of PSDSR from both the software architecture and the function implementation. A most distinctive character, the practical application in monitoring the cut-set power flows, with result visualization is emphasized.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129350284","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
Current controlled fully balanced current conveyor 电流控制全平衡电流输送机
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746207
Chunhua Wang, Qiujing Zhang
{"title":"Current controlled fully balanced current conveyor","authors":"Chunhua Wang, Qiujing Zhang","doi":"10.1109/APCCAS.2008.4746207","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746207","url":null,"abstract":"This paper presents a current controlled fully balanced second-generation current conveyor circuit (CFBCCII). The proposed circuit with the fully balanced structure can restrain odd order harmonic distortion and common-mode disturbing signal effectively. Furthermore, the circuit has the property of current controllability, which can adjust its interior parameter via tuning bias current. PSPICE simulation confirms the performance of the proposed circuit.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129483679","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 capacitive-coupled transformerless active power filter with coupling current feedback control 具有耦合电流反馈控制的电容耦合无变压器有源电力滤波器
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746199
C. Lam, M. Wong
{"title":"A capacitive-coupled transformerless active power filter with coupling current feedback control","authors":"C. Lam, M. Wong","doi":"10.1109/APCCAS.2008.4746199","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746199","url":null,"abstract":"This paper presents a low rating capacitive-coupled transformerless active power filter (APF) for reactive power, current harmonics and neutral current compensation in three-phase four-wire distribution power system. Besides the benefits of APFpsilas rating and initial cost reduction, it can lessen the switching loss and electromagnetic interference (EMI) problems, without significantly deteriorates the compensation capability. A novel control strategy is also proposed to strengthen the system damping and stability. Thus, the capacitive-coupled APF is characterized by low capacity, economical cost, stable and good filtering performance. Finally, simulation results are given to verify the viability and effectiveness of the APF and its control.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130325292","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: 3
A new iterative reconstruction scheme for signal reconstruction 一种新的信号重构迭代方案
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746028
Honglin Huang, A. Makur
{"title":"A new iterative reconstruction scheme for signal reconstruction","authors":"Honglin Huang, A. Makur","doi":"10.1109/APCCAS.2008.4746028","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746028","url":null,"abstract":"Projection Onto Convex Sets (POCS) is an iterative method to obtain the information from one domain using the information available in other domains, and it has been widely used in image restoration problems and block-based DCT compression standards as a post-processing scheme. In this paper, we study an iterative signal reconstruction method for signal reconstruction and sparse signal compression. This method is similar to POCS method. From known partial time-domain samples and partial frequency-domain coefficients, it iteratively projects the signal onto the known samplespsila subspaces and the known coefficientspsila subspaces. Finally the signal can recover closely by using this iterative reconstruction scheme. Some experiments show this method can correctly and effectively reconstruct the underlying signals.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130526297","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: 3
A RSSI-based environmental-adaptive dynamic radiation power management for Wireless Sensor Networks 基于rssi的无线传感器网络环境自适应动态辐射功率管理
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems Pub Date : 2008-11-01 DOI: 10.1109/APCCAS.2008.4746203
Joe-Air Jiang, Cheng-Long Chuang, Chia-Pang Chen, Tzu-Shiang Lin
{"title":"A RSSI-based environmental-adaptive dynamic radiation power management for Wireless Sensor Networks","authors":"Joe-Air Jiang, Cheng-Long Chuang, Chia-Pang Chen, Tzu-Shiang Lin","doi":"10.1109/APCCAS.2008.4746203","DOIUrl":"https://doi.org/10.1109/APCCAS.2008.4746203","url":null,"abstract":"Wireless sensor network (WSN) is one of the active research topics in the field of computer network since it provides three types of basic services: sensing, processing, and disseminating. Ad-hoc and multi-hop WSNs are commonly used in many applications; therefore, maintaining stability of WSN is an essential issue in present days. However, node failures are not exceptions in WSN. Many factors may cause sensor nodes to fail, such as energy exhaustion, out of communication range, or node module damage. These damages are usual incidents in practical WSN applications. Except node module damages that we are unable to look after, we propose an energy-efficient routing algorithm to prolong the lifetime of nodes in WSN. Another feature of the proposed algorithm is that each node routes network packets independently throughout the entire WSN. It makes that algorithm to provide autonomic management of the links in WSN.","PeriodicalId":344917,"journal":{"name":"APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127016100","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: 8
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