检索结果-内蒙古大学图书馆

IEEE Energy Conversion Congress and Exposition, ECCE

作者： Kehu Yang Qi Zhang Ruyi Yuan Wensheng Yu Jin Wang School of Mechanical Electronic and Information Engineering China University of Mining and Technology Beijing Integrated Information System Research Center Institute of Automation Chinese Academy of Sciences School of Electronic Engineering Beijing University of Posts and Telecommunications Department of Electrical and Computer Engineering The Ohio State University

Selective harmonic elimination technology has been widely used in many medium and high power converters which operating at very low switching frequency, however, it is still a challenging work to solve the switching angles from a group of nonlinear transcendental equations, especially for the multilevel converters. In this paper, an algebraic method is proposed for selective harmonic elimination. First, the order of the SHE equations is reduced by using the symmetric polynomials theory, and then, its Groebner bases is computed. After this two conversions, the solving of multivariable high order SHE equations is converted to solve two univariate equations and a set of univariate linear equations which simplifies the solving procedure dramatically and abandon the requirement on initial values and can find all the solutions. Compared with the existing algebraic method, such as the resultant elimination method, the calculation efficiency is improved. Experimental verification is also shown in this paper.

关键词： Polynomials Mathematical model Harmonic analysis Switches Inverters Modulation Software algorithms

来源：评论

学校读者我要写书评

暂无评论

Repetitive controller with low-pass filter compensation applied to Uninterruptible Power Supplies (UPS) 41

Repetitive controller with low-pass filter compensation appl...

引用

41st Annual Conference of the IEEE Industrial electronics Society, IECON 2015

作者： Lorenzini, Charles Flores, Jeferson Vieira Pereira, Luis Fernando Alves Salton, Aurelio Tergolina Castro, Rafael Silveira Department of Electrical Engineering Universidade Federal Do Rio Grande Do sul Av. Osvaldo Aranha 103 Porto Alegre-RS90035-190 Brazil Automation and System Control Group Pontifícia Universidade Católica Do Rio Grande Do sul Av. Ipiranga 6681 Porto Alegre-RS90619-900 Brazil

ISBN: (纸本)9781479917624

In this paper is proposed a method to improve the tracking performance of repetitive controllers in Uninterruptible Power Supplies (UPS). The main idea is to simultaneously compensate the gain reduction and frequency shift caused by the introduction of a low-pass filter in series with the delay element. Also, an optimization problem based on LMI constraints is presented to determine controller gains that guarantee stability and performance of the closed loop system. Simulation results based on the output stage of 3.5kVA UPS demonstrate the effectiveness of the proposed method. © 2015 IEEE.

关键词： Uninterruptible power systems

来源：评论

学校读者我要写书评

暂无评论

Die-dending of adhesively bonded sheet metals

Die-dending of adhesively bonded sheet metals

引用

12th Asia-Pacific Conference on engineering Plasticity and Its Application, AEPA 2014

作者： Takiguchi, Michihiro Tokuda, Taro Yoshida, Tetsuya Uemori, Takeshi Yoshida, Fusahito Department of Maritime Technology Hiroshima National College of Maritime Technology 4272-1 Higashino Osakikamijima-Cho Toyota-gun Hiroshima 725-0231 Japan Department of Electronic Control Engineering Hiroshima National College of Maritime Technology 4272-1 Higashino Osakikamijima-Cho Toyota-gun Hiroshima 725-0231 Japan Department of Mechanical Engineering Kinki University 1 Takaya-Umenobe Higashi-Hiroshima Hiroshima 739-2116 Japan Department of Mechanical System Engineering Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan

ISBN: (纸本)9783038352266

In this paper, the deformation behavior of adhesive layer in die-Bending for adhesively bonded sheet metals was investigated by experiments and finite element method (FEM). We paid special attention to the bending/unbending shear deformation of the adhesive layer during the die-Bending of adhesively bonded sheet metals by using highly ductile acrylic adhesive. Major results obtained are summarized as follows: (1) The bending/unbending shear deformation of the adhesive layer was observed during the die-Bending. (2) The punch radius has a large influence on the die-Bending in the adhesively bonded sheet metals. (3) It is desirable to perform die-Bending at high speed as well as air-Bending. © (2015) Trans Tech Publications, Switzerland.

关键词： Finite element method

来源：评论

学校读者我要写书评

暂无评论

Observer-Based Robust Coordinated Tracking of Multi-Agent systems with Input Saturation

Observer-Based Robust Coordinated Tracking of Multi-Agent Sy...

引用

IEEE Annual Conference on Decision and control

作者： Xiaoling Wang Housheng Su Xiaofan Wang Department of Automation Shanghai Jiao Tong University and Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai 200240 China Department of Control Science and Engineering Image Processing and Intelligent Control Key Laboratory of Education Ministry of China Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781479978878

This paper addresses the robust semi-global coordinated tracking problem of multiple-input multiple-output (MIMO) multi-agent systems with input saturation and communication noise. A distributed observer-based coordinated tracking protocol is constructed by combining a novel parameterized low-and-high feedback technique with the high-gain observers design approach. It is shown that, under the assumptions that each agent is asymptotically null-controllable with bounded controls and the network is connected, semi-global consensus tracking or semi-global swarm tracking can be attained for left-invertible and minimal-phase systems.

关键词： noise(communication) bounded control tracking high gain Agents

来源：评论

学校读者我要写书评

暂无评论

Bilateral Teleoperation of Multiple Agents with Formation control

引用

IEEE/CAA Journal of Automatica Sinica 2014年第2期1卷 141-148页

作者： Jing Yan Xian Yang Cailian Chen Xiaoyuan Luo Xinping Guan Institute of Electrical Engineering Yanshan University Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Information ProcessingMinistry of Education of China

This paper studies the formation problem for multislave teleoperation system over general communication networks,where multiple mobile slave agents are coupled with a single master robot. The forward and backward network transmission time delays are assumed to be asymmetric and *** to the quantization in the network, a dynamic quantization strategy is provided to quantize the output signals of the master robot and slave agents before transmitting. Then, a novel masterslave protocol is designed to achieve the formation task under variable time delays and quantization. Additionally, the sufficient conditions for stability are presented to show that the formation protocol can stabilize the master-slave system under variable time delays and quantization. Finally, simulation are performed to show effectiveness of the main results.

关键词： Robots Quantization (signal) Delay effects Protocols Stability analysis Delays Multi-agent systems

来源：评论

学校读者我要写书评

暂无评论

Phase angle adjustment for phase advance control of brushless DC motor

Phase angle adjustment for phase advance control of brushles...

引用

2014 5th International Conference on Intelligent and Advanced systems, ICIAS 2014

作者： Syafiq Bin Mohd, Mohd Noh Bin Karsiti, Mohd Syaifuddin Bin Mohd, Mohd Automation and Control System Cluster / MOR Energy Department of Electrical Engineering UniversitiTeknologi PETRONAS Malaysia

ISBN: (纸本)9781479946549

Brushless direct current (BLDC) motor is widely used in small and medium side electric vehicles as it exhibit highest specific power and thermal efficiency compared with induction motor. The permanent magnets in the rotor create a constant magnetic flux, which limit the motor top speed. As the back electromotive force (EMF) voltage increases proportionally with motor rotational speed and it approaches the amplitude of the input voltage, the phase current amplitude will reach zero. By advancing the phase current, it is possible to extend the maximum speed of the BLDC motor beyond the rated top speed. This will allow smaller BLDC motor to be used in small electric vehicles and in larger applications will allow the use of BLDC motor without the use of multispeed transmission unit for high speed operation. Adjusting the phase angle will affect the speed of the motor as the each coil is energized earlier than the corresponding rise in back emf of the coil. Preliminary test results indicated that the motor top speed can be increased at least by 40 percent over the baseline speed at no load condition. © 2014 IEEE.

关键词： Speed

来源：评论

学校读者我要写书评

暂无评论

RETRACTED ARTICLE: Potential of support vector regression for solar radiation prediction in Nigeria

引用

Natural Hazards 2015年第2期77卷 1055-1068页

作者： Olatomiwa, Lanre Mekhilef, Saad Shamshirband, Shahaboddin Petkovic, Dalibor Power Electronics and Renewable Energy Research Laboratory (PEARL) Department of Electrical Engineering Faculty of Engineering University of Malaya Kuala Lumpur Malaysia Department of Electrical and Electronic Engineering Federal University of Technology Minna Nigeria Department of Computer System and Technology Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur Malaysia Department for Mechatronics and Control Faculty of Mechanical Engineering University of Niš Nis Serbia

In this paper, the accuracy of soft computing technique in solar radiation prediction based on series of measured meteorological data (monthly mean sunshine duration, monthly mean maximum and minimum temperature) taking from Iseyin meteorological station in Nigeria was examined. The process, which simulates the solar radiation with support vector regression (SVR), was constructed. The inputs were monthly mean maximum temperature (Tmax), monthly mean minimum temperature (Tmin) and monthly mean sunshine duration ( $$ \bar{n} $$ ). Polynomial and radial basis functions (RBF) are applied as the SVR kernel function to estimate solar radiation. According to the results, a greater improvement in estimation accuracy can be achieved through the SVR with polynomial basis function compared to RBF. The SVR coefficient of determination R 2 with the polynomial function was 0.7395 and with the radial basis function, the R 2 was 0.5877.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Stochastic Packet Scheduling for Optimal Parameter Estimation

Stochastic Packet Scheduling for Optimal Parameter Estimatio...

引用

IEEE Annual Conference on Decision and control

作者： Duo Han Keyou You Lihua Xie Junfeng Wu Ling Shi School of Electrical and Electronic Engineering Nanyang Technological University Singapore Department of Automation Tsinghua University Beijing 100084 China Department of Automatic Control The Royal Institute of Technology (KTH) Stockholm Sweden Electronic and Computer Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong

ISBN: (纸本)9781479978878

In this paper we consider optimal parameter estimation with a constrained packet transmission rate. Due to the limited battery power and the traffic congestion over a large sensor network, each sensor is required to discard some packets and save transmission times. We propose a packet-driven sensor scheduling policy such that the sensor transmits only the important measurements to the estimator. Unlike the existing deterministic scheduler in [1], our stochastic packet scheduling is novelly designed to maintain the computational simplicity of the resulting maximum-likelihood estimator (MLE). This results in a nice feature that the MLE is still able to be recursively computed in a closed form, and the Cramer-Rao lower bound (CRLB) can be explicitly evaluated. Moreover, an optimization problem is formulated and solved to obtain the optimal parameters of the scheduling policy under which the estimation performance is comparable to the standard MLE (with full measurements) even with a moderate transmission rate. Numerical simulations are included to show the effectiveness.

关键词： Packet optimal parameter Parameter estimation packet schedule Battery power supply scheduling policy traffic congestion Sensors Sensor networks closed forms Stochastic

来源：评论

学校读者我要写书评

暂无评论

Development of multi-fingered dexterous hand for grasping manipulation

引用

Science China(Information Sciences) 2014年第12期57卷 76-85页

作者： LIN GuoDong LI ZhiJun LIU Lan SU Hang YE WenJun The Key Lab of Autonomous System and Network Control Ministry of EducationCollege of Automation Science and Engineering South China University of Technology School of Material Science and Engineering South China University of Technology Department of Mechanical and Industrial Engineering Concordia University

In this paper,a developed multi-fingered dexterous hand with flexible tactile skin is *** dexterous hand has 5-fingers with 6-DOFs and each finger is equipped with a small harmonic drive gear and a fine high-power mini *** achieve the goal of grasping with high accuracy,each fingertip is covered with the tactile array sensors for determination of the force between the finger and the grasped *** preliminary experiments are conducted to illustrate the performance of the grasping of the developed dexterous hand.

关键词： multi-fingered dexterous hand grasping tactile sensors

来源：评论

学校读者我要写书评

暂无评论

Bus Priority system Using Radio Frequency Identification (RFID) Detection in Singapore

Bus Priority System Using Radio Frequency Identification (RF...

引用

2015年南京第十四届亚太智能交通论坛

作者： Tatsuya Higuchi Lincoln Tan Musthafa Ibrahim Joanne Cheong Traffic Control Systems Engineering Section Electronic Control Technology Department ICT Solution He Traffic Control & Transportation Division Mitsubishi Heavy Industries Engine System Asia Pie LtdSin Intelligent Transport Systems Development Land Transport AuthoritySingapore City219428Singapore

Making public transport a choice mode is one of the three key strategic thrusts listed in Land Transport Master Plan (LTMP) *** achieve that, it is important to make the public transport system attractive for use by the *** of such application identified is to provide signal priority for busses at traffic light *** scan and assessment of various detection technologies have indicated that RFID is the appropriate, open standards and economical technology for the bus *** is a wireless non-contact system that uses radio-frequency electromagnetic fields to transfer data from a tag attached to an object, for the purposes of automatic identification and *** tags has been widely used in various industries, including transportation for payment services such as for transit fares, highway tolls and parking fares, as well as in the areas of vehicle identification and access control in many *** the cost of RFID tags has decreased significantly over time, its detection capability has also improved to allow longer range *** this, a concerted initiative between the local authorities and the industry to conduct a technical trial for traffic light priority for buses using radio frequency identification technology (RFID) was executed at selected test locations in *** paper discusses on the technical trial conducted to assess the accuracy and reliability of Bus Priority system using RFID in providing traffic light priority for buses in Singapore.

关键词： ITS signal priority technical trial radio frequency identification

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：