2015 23rd Iranian Conference on Electrical Engineering最新文献_第10页

A novel low power high CMRR pseudo-differential CMOS OTA with common-mode feedforward technique 采用共模前馈技术的一种新型低功率高CMRR伪差分CMOS OTA

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146415

M. Shahabi, Roya Jafarnejad, J. Sobhi, Ziaeddin Daei Kouzehkanani

{"title":"A novel low power high CMRR pseudo-differential CMOS OTA with common-mode feedforward technique","authors":"M. Shahabi, Roya Jafarnejad, J. Sobhi, Ziaeddin Daei Kouzehkanani","doi":"10.1109/IRANIANCEE.2015.7146415","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146415","url":null,"abstract":"This paper presents a novel low-power (LP) pseudo-differential (PD) CMOS operational transconductance amplifier (OTA). The proposed OTA is based on a feedforward cancellation of the input common mode signal at the output nodes in order to enhance the common-mode rejection ratio (CMRR) with the minimum cost of area, the power consumption and the parasitic components. By means of the proposed configuration of the common-mode feedforward (CMFF) technique, the transconductance gain of this OTA is almost two times and four times the transconductance gain of the traditional CMFF OTAs. It also reduces the power needed in comparison with the traditional CMFF OTAs to achieve the same transconductance gain. The post-simulation results shows that the proposed OTA has a 46.4 dB DC gain, a 14.5 MHz gain bandwidth (GBW) and a 85° phase margin for 2 PF capacitive loads. The proposed OTA achieved 110.1 dB CMRR. The OTA consumes only 28.6 μW under a 1.2 V single supply voltage and occupies a very small area of 33 × 10-5 mm2. This OTA is designed and simulated by the TSMC 0.18 μm CMOS process.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"502 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133268961","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: 7

Preemption-delay aware self-triggered controller: A scheduler-controller codesign approach 抢占-延迟感知自触发控制器:调度-控制器协同设计方法

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146306

V. Panahi, M. Mohaqeqi, M. Kargahi

{"title":"Preemption-delay aware self-triggered controller: A scheduler-controller codesign approach","authors":"V. Panahi, M. Mohaqeqi, M. Kargahi","doi":"10.1109/IRANIANCEE.2015.7146306","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146306","url":null,"abstract":"Digital control systems traditionally are implemented using real-time periodic tasks, which periodically perform the sampling, computation, and actuation steps. Periods are usually chosen pessimistically too short to guarantee the control system stability and/or control performance. However, most of the times, the control system might be stable, accommodating in an appropriate state, and hence, there is no need to execute some control jobs. Self-triggered controllers have been introduced to address this issue through releasing less jobs, depending on the current state of the system. As a result, fewer jobs are executed during the system life time, leading to less energy consumption in the sensor, processing, actuator, and communicating devices. Stability and control performance of self-triggered controllers are sensitive to I/O delays, namely delays happening between samplings and actuations, which are mostly affected by the interferences between different tasks. This paper presents a scheduler-controller co-design approach by first showing how a predictable preemptive scheduling algorithm can provide an upper-bound on the I/O delay, and then presenting an I/O delay-aware self-triggered controller which can tolerate the bounded delays.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133885061","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

Filter-and-forward relay design in cognitive two-way relay networks 认知双向中继网络中的滤波转发中继设计

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146275

M. Maleki, V. Vakili

引用次数: 0

A combined "probability" and "LMI" Method for determining the range of parameter variation in the VS-FP wind turbine LPV model 一种确定VS-FP型风力机LPV模型参数变化范围的“概率”与“LMI”相结合的方法

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146451

N. Afshari, M. Dehghani

引用次数: 0

ECG based detection of left ventricular hypertrophy using higher order statistics 基于ECG的左心室肥厚高阶统计量检测

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146172

R. Afkhami, M. Tinati

引用次数: 10

A novel fuzzy-based smoke detection system using dynamic and static smoke features 一种基于动态和静态烟雾特征的新型模糊烟雾探测系统

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146309

Yashar Deldjoo, Fatemeh Nazary, A. Fotouhi

引用次数: 12

Using embodiment theory to train a set of actuators with different expertise to accomplish a duty: An application to train a quadruped robot for walking 运用具身理论训练一组具有不同专业知识的执行器来完成任务:一个训练四足机器人行走的应用

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146284

Aliasghar Mortazi, S. Shouraki

{"title":"Using embodiment theory to train a set of actuators with different expertise to accomplish a duty: An application to train a quadruped robot for walking","authors":"Aliasghar Mortazi, S. Shouraki","doi":"10.1109/IRANIANCEE.2015.7146284","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146284","url":null,"abstract":"In recent years, there have been many efforts for distributing a big and complex duty among some agents in order to do it more simply. One of the theories that has received attention recently is called Embodiment. According to this theory, in cooperation of a set of agents for performing a particular task, expertise might not be integrated in a centralized controller; rather it gradually spreads to component and agents. Based on this theory and despite the fact that the human brain is the main controller, expertise is integrated in the body organs gradually. In multi-agent systems a central controller controls and programs whole duties and jobs that agents should perform, this leads to have a very complicated central controller. While in embodiment systems, initially each agent with different structures are fed with some knowledge in the specific duty and then are placed together to accomplish a common task. Now, we will examine this issue that how much improvement is earned when every agent has got a specific amount of partial knowledge separately in comparison with whole structure is defined beforehand. We try to implement embodied system on legs of a quadruped and compare result with the multi-agent system.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"839 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116423147","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

IM3 injection technique for improving the linearity of an RF power amplifier 提高射频功率放大器线性度的IM3注入技术

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146379

Z. Fahimi, R. Dehghani

引用次数: 1

Realization of self-bias humidity sensor, based on ZnO nanosheets 基于ZnO纳米片的自偏置湿度传感器的实现

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146386

E. Modaresinezhad, S. Darbari

引用次数: 3

Introduction of dimensional approach to evaluation of distribution transformer short circuit forces 介绍了配电变压器短路力评估的量纲法

2015 23rd Iranian Conference on Electrical Engineering Pub Date : 2015-05-10 DOI: 10.1109/IRANIANCEE.2015.7146464

A. Moradnouri, M. Vakilian, P. Elhaminia, M. Bahrami

{"title":"Introduction of dimensional approach to evaluation of distribution transformer short circuit forces","authors":"A. Moradnouri, M. Vakilian, P. Elhaminia, M. Bahrami","doi":"10.1109/IRANIANCEE.2015.7146464","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2015.7146464","url":null,"abstract":"In this paper the radial and axial forces developed under windings short circuit conditions in two different designs of a 630 kVA distribution transformer (using analytic and finite element method) are determined and compared. The simulation results using FEM software verify the results of the employed analytic method. These results show that although the transformer with larger dimensions have a better operating performance and lower total owning cost with respect to one with smaller sizes (assuming the same mechanical strength for winding and support structures of both), the risk of failure due to its related short circuit forces elevates in the former. Additionally, this paper presents some analytical expressions which demonstrate the relationships between short circuit forces and transformer geometrical parameters. These relationships help transformer designers to choose the best dimensional parameters to improve the transformer performance in such a way that risk of failure of transformer due to short circuit forces doesn't increase or increase in a lower paste if compared with the other sample.","PeriodicalId":187121,"journal":{"name":"2015 23rd Iranian Conference on Electrical Engineering","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115175957","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