检索结果-内蒙古大学图书馆

14th International Conference on Electrical engineering, Computing Science and Automatic control, CCE 2017

作者： Moreno, Frank A. Paucara, Jhonatan D. Prez, C. Gustavo Sotomayor, Javier J. Sal Rosas, Damian E.Y. Master Program on Control and Automation Engineering Pontificia Universidad Católica de Perú Lima Peru

ISBN: (纸本)9781538634059

A novel control strategy is proposed for a bidirectional multiport single phase two stage microinverter without electrolytic capacitor. The application of this converter is for power factor correction under non-linear grid tied load. The converter is composed of a triple active bridge series-resonant DC/DC converter cascaded with a voltage source inverter where a film capacitor is used in the DC-Link. Power decoupling is obtained due to a high ripple low frequency voltage in the DC-Link. The proposed controller has three cascaded loops to control the DC-Link average voltage, the instantaneous grid current and the point of common coupling voltage respectively. This strategy allows having a high speed steady-state response, good stability, low harmonic distortion in the grid, bidirectional power flow and low computational cost unlike other controllers. Two different cases have been tested, the first one when only the grid delivers power to the non-linear load, and the second one when the power flow is shared between the grid and any other DC source (renewable source or battery). Simulation results validate the controller functionality. © 2017 IEEE.

关键词： Electrolytic capacitors

来源：评论

学校读者我要写书评

暂无评论

Bidirectional multiport microinverter and grid-multimode-operation control for a non-linear load

Bidirectional multiport microinverter and grid-multimode-ope...

引用

Workshop on Power Electronics and Power Quality Applications (PEPQA)

作者： Frank A. Moreno Vera Jhonatan D. Paucara Prado Javier J. Sotomayor Moriano C. Gustavo Pérez Zuñiga Damian E. Sal y Rosas Celi Master Program in Control and Automation Engineering Pontificia Universidad Católica del Perú Lima Perú Pontificia Universidad Catolica del Peru Lima PE

Micro-inverters usually are used to connect photovoltaic panels (PV) to the electricity grid. If the energy provided by the panel is not enough to satisfy the demands, the system becomes dependent exclusively of the grid. This constraint demands the use of a battery bank, therefore it is necessary to add a third port to the micro-inverter to connect this energy backup. In this paper, a two stage micro-inverter is proposed, the first stage is a DC/DC Triple Active Bridge (TAB) converter that integrates a back-up battery and works in soft switching; and the second stage is a Voltage Source Inverter (VSl) that operates in both grid-connected mode (GCM) and Stand Alone Mode (SAM). The grid-multimode operation controller developed detects the islanding fault and maintains the energy quality for a typical nonlinear load. Reliability and robustness of Uninterrupted Power Supplies (UPS) are increased by the proposed control.

关键词： Phase locked loops Capacitors Microgrids Batteries Bridge circuits Inverters Robustness

来源：评论

学校读者我要写书评

暂无评论

Evaluation of Lower-Limb Rehabilitation Based on Muscle Fatigue

Evaluation of Lower-Limb Rehabilitation Based on Muscle Fati...

引用

IEEE International Symposium on Industrial Electronics

作者： Juan Zhao Jinhua She Dianhong Wang Edwardo F. Fukushima Min Wu Hiroshi Hashimoto School of Engineering Tokyo University of Technology Hachioji Tokyo Japan School of Automation China University of Geosciences Wuhan China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan China Master Program of Innovation for Design & Engineering Advanced Institute of Industrial Technology Tokyo Japan

The purpose of this study was to investigate the features of muscle fatigue extracted from surface electromyography (sEMG) signals of lower limbs, and then to present an evaluation method of lower-limb rehabilitation to provide physical basis for the training effect of rehabilitation. Four healthy young university students were invited to perform a pedaling exercise for 40 days. The sEMG signals of four lower-limb muscles are recorded and processed using a Butterworth filter and a Daubechies 10 wavelet. Then, the change of the ratios of the spectrums of Types I and II muscle fibers to the total number of the spectrum along the exercise are examined. The time of the first intersection of the ratios for Types I and II for each muscle is used as a performance index. The increase in the time at the beginning and the end of the training period indicates the improvement of motor function, and thus it verifies the effectiveness of the rehabilitation.

关键词： SEMG Muscle fatigue Rehabilitation evaluation Unequal length segmentation

来源：评论

学校读者我要写书评

暂无评论

Design of a fractional order PI controller for steam pressure in the steam drum of a bagasse fired boiler 19

Design of a fractional order PI controller for steam pressur...

引用

19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Rivas-Perez, R. Castillo-Garcia, F. Sotomayor-Moriano, J. Feliu-Batlle, V. Master Program in Control Engineering and Automation Pontificia Universidad Católica del Perú Lima Peru Havana Polytechnic University CUJAE Habana Cuba Escuela Técnica Superior de Ingenieros Industriales Universidad de Castilla-La Mancha Ciudad Real Spain

ISBN: (纸本)9783902823625

This paper proposes a fractional-order PI controller for controlling the steam pressure in the steam drum of a bagasse fired boiler. The dynamics behavior of this process was experimentally identified. This identification procedure yielded an equivalent third order plus time delay model, and showed wide process static gain variations. We therefore propose a new methodology for the design of fractional-order robust controllers for this class of processes. It was shown that the attained controllers significantly outperformed the robustness achieved with current PI controllers. © IFAC.

关键词： controllers

来源：评论

学校读者我要写书评

暂无评论

Design of a fractional order PI controller for steam pressure in the steam drum of a bagasse fired boiler

引用

IFAC Proceedings Volumes 2014年第3期47卷 1337-1342页

作者： R. Rivas-Perez F. Castillo-Garcia J. Sotomayor-Moriano V. Feliu-Batlle Master Program in Control Engineering and Automation Pontificia Universidad Católica del Perú Lima Peru Havana Polytechnic University CUJAE Habana Cuba (Tel: 537-266-3285 Escuela Técnica Superior de Ingenieros Industriales Universidad de Castilla-La Mancha Ciudad Real Spain

关键词：

来源：评论

学校读者我要写书评

暂无评论

Verification of relationship between heart rate and body movement for fatigue estimation

Verification of relationship between heart rate and body mov...

引用

IEEE International Conference on Industrial Informatics (INDIN)

作者： Jinhua She Hitoshi Nakamura Junya Imani Yasuhiro Ohyama Hiroshi Hashimoto Min Wu School of Information Science and Engineering Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Changsha China School of Computer Science Tokyo University of Technology Hachioji Japan Graduate School of Bionics Tokyo University of Technology Hachioji Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Japan

It is an urgent need to find an objective way to estimate the degree of fatigue of employees. In this study, we designed a monitoring and estimation system for the degree of fatigue. This paper explains a long-term pedaling experiment that we use it to explore the possibility to use only the time sequence data of head movement during pedaling to estimate the fatigue. While we show the possibility for this through experimental data, it is clear that we need to collect more data to establish an estimation method.

关键词： Fatigue Heart rate Estimation Educational institutions Monitoring Correlation Electronic mail

来源：评论

学校读者我要写书评

暂无评论

Comparison between Body Fat Measurements Obtained by Portable Ultrasound and Caliper in Young Adults

Comparison between Body Fat Measurements Obtained by Portabl...

引用

34th Annual International Conference of the IEEE engineering-in-Medicine-and-Biology-Society (EMBS)

作者： Ulbricht, L. Neves, E. B. Ripka, W. L. Romaneli, E. F. R. Master Program in Biomedical Engineering Federal University of Technology - Paraná. Brazil Federal University of Technology - Paraná. Brazil Electrical Engineering and Industrial Computing Program Federal University of Technology - Paraná Brazil Control and Automation Engineering Federal University of Technology - Paraná Brazil

ISBN: (纸本)9781457717871

The objective of this study was to compare and correlate the Portable Ultra Sound (US) measuring technique to the skinfold measuring technique (SF) to estimate body fat percentage (%F) in young adults. Sixty military were evaluated, all males, divided in two groups: Group 1 (normal) composed by 30 military with Body Mass Index (BMI) until 24.99 kg/m(2) and Group 2 (overweight) composed by 30 military with BMI > 25 kg/m(2). Weight, height, skinfolds and ultrasound were measured in 9 points (triceps, subscapular, biceps, chest, medium axillary, abdominal, suprailiac, thigh and calf). Body fat average values obtained by skinfold thickness and ultrasound measurements were 13.25 +/- 6.32 % and 12.73 +/- 5.95 % respectively. Despite significant differences in measurements of each anatomical site, it was possible to verify that the total final body fat percentage calculated by both techniques did not present significant differences and that overweight group presented greater similarity between the values obtained using caliper and ultrasound equipment.

关键词： Body composition Skinfold thickness Portable Ultrasound Anthropometry Healthcare

来源：评论

学校读者我要写书评

暂无评论

Biophotogrammetry Model of Respiratory Motion Analysis Applied to Children

Biophotogrammetry Model of Respiratory Motion Analysis Appli...

引用

34th Annual International Conference of the IEEE engineering-in-Medicine-and-Biology-Society (EMBS)

作者： Ripka, W. L. Ricieri, D. da V. Ulbricht, L. Neves, E. B. Stadnik, A. M. W. Romaneli, E. F. R. Electrical Engineering and Industrial Computing Program Federal University of Technology - Paraná Brazil Physical Education Department Federal University of Paraná Brazil Master Program in Biomedical Engineering Federal University of Technology - Paraná Brazil Federal University of Technology - Paraná. Brazil Physical Education Federal University of Technology - Paraná Brazil Control and Automation Engineering Federal University of Technology - Paraná Brazil

ISBN: (纸本)9781457717871

This study aimed to test a protocol of measurements based on Biophotogrammetry to Analysis of Respiratory Mechanics (BARM) in healthy children. Seventeen normal spirometric children (six male and 11 female) were tested. Their performed maneuvers of forced inspiratory vital capacity were recorded in the supine position. The images were acquired by a digital camera, laterally placed to the trunk. Surface markers allowed that the files, exported to CorelDraw (R) software, were processed by irregular trapezoids paths. Compartments were defined in the thoracic (TX), abdominal (AB) and the chest wall (CW). They were defined at the end of an inspiration and expiration, both maximum, controlled by a digital spirometer. The result showed that the measured areas at the inspiratory and expiratory periods were statistically different (p<0.05). It reflects the mobility of CW and compartments. In conclusion, the proposed method can identify the breathing pattern of the measured subject using images in two dimensions (2D).

关键词： respiratory mechanics chest wall respiratory movements photogrammetry children

来源：评论

学校读者我要写书评

暂无评论

Comparison between body fat measurements obtained by portable ultrasound and caliper in young adults

Comparison between body fat measurements obtained by portabl...

引用

Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： L. Ulbricht E. B. Neves W. L. Ripka E. F. R. Romaneli Master Program in Biomedical Engineering Federal University of Technology Parana Brazil Electrical Engineering and Industrial Computing Program Federal University of Technology Parana Brazil Control and Automation Engineering Federal University of Technology Parana Brazil

The objective of this study was to compare and correlate the Portable Ultra Sound (US) measuring technique to the skinfold measuring technique (SF) to estimate body fat percentage (%F) in young adults. Sixty military were evaluated, all males, divided in two groups: Group 1 (normal) composed by 30 military with Body Mass Index (BMI) until 24.99 kg/m 2 and Group 2 (overweight) composed by 30 military with BMI >; 25 kg/m 2 . Weight, height, skinfolds and ultrasound were measured in 9 points (triceps, subscapular, biceps, chest, medium axillary, abdominal, suprailiac, thigh and calf). Body fat average values obtained by skinfold thickness and ultrasound measurements were 13.25 ± 6.32 % and 12.73 ± 5.95 % respectively. Despite significant differences in measurements of each anatomical site, it was possible to verify that the total final body fat percentage calculated by both techniques did not present significant differences and that overweight group presented greater similarity between the values obtained using caliper and ultrasound equipment.

关键词： Ultrasonic imaging Ultrasonic variables measurement Correlation Thigh Educational institutions Estimation Biomedical measurements

来源：评论

学校读者我要写书评

暂无评论

Compensation of unknown input dead zone using equivalent-input-disturbance approach

Compensation of unknown input dead zone using equivalent-inp...

引用

9th International Conference on Informatics in control, automation and Robotics, ICINCO 2012

作者： Ouyang, Liyu She, Jinhua Wu, Min Hashimoto, Hiroshi School of Information Science and Engineering Central South University Changsha 410083 China Hunan Engineering Laboratory for Advanced Control and Intelligent Automation Changsha 410083 China School of Computer Science Tokyo University of Technology Hachioji Tokyo 192-0982 Japan Master Program of Innovation for Design and Eng. Advanced Inst. of Industrial Tech. Shinagawa Tokyo 140-0011 Japan

ISBN: (纸本)9789898565211

This paper considers the problem of the compensation of an unknown dead zone in the input of a plant. A new compensation method is presented based on the estimation of an equivalent input disturbance (EID). Unlike other methods, this method does not require the exact information of a dead zone. First, we consider the dead zone as an input-dependent disturbance and employ an EID estimator to estimate it. Then, we incorporate the estimate in the control input and compensate the effect of the dead zone almost completely. Simulation results demonstrate the validity of the method. Copyright © 2012 SciTePress.

关键词： Dead zones

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：