ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)最新文献

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Radon-Hermite analysis applied to image coding 氡-埃尔米特分析在图像编码中的应用
J.L. Sivan-C, M.P. Angeles-Meza, B. Escalante-Ramfrez
{"title":"Radon-Hermite analysis applied to image coding","authors":"J.L. Sivan-C, M.P. Angeles-Meza, B. Escalante-Ramfrez","doi":"10.1109/ISIE.1999.796869","DOIUrl":"https://doi.org/10.1109/ISIE.1999.796869","url":null,"abstract":"In this paper it is shown how local differential structures in images can be described and coded efficiently by means of the analysis of local projections. Such analysis involves a 1-D Hermite transform of all local Radon projections, where localization is achieved by applying a Gaussian window to the image. Since the Gaussian window is isotropic, the 1-D analysis can be based on the 2-D cartesian Hermite transform. For the case of oriented patterns such as edges and lines, the image is suitably described with a unique projection giving the maximum directional energy. We show that the inverse Radon transform is not required in the synthesis process, since only the information along one direction is preserved. A more specific representation is introduced in an edge model whose parameters are determined in terms of the Hermitian coefficients up to second order. Experimental results are also included.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133362578","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
Synthetic aperture-based reconstruction of intravascular ultrasound images in the time domain and frequency domain 基于合成孔径的血管内超声图像时域和频域重构
K. Schroeder, C. Haas, M. Krüger, Helmut Ermert, T. Rastello, Didier Vray, Gérard Gimenez
{"title":"Synthetic aperture-based reconstruction of intravascular ultrasound images in the time domain and frequency domain","authors":"K. Schroeder, C. Haas, M. Krüger, Helmut Ermert, T. Rastello, Didier Vray, Gérard Gimenez","doi":"10.1109/ISIE.1999.797018","DOIUrl":"https://doi.org/10.1109/ISIE.1999.797018","url":null,"abstract":"Intravascular ultrasound images are limited by a poor lateral resolution and elevated grating lobes. In this paper, two reconstruction algorithms are presented which succeed in improving the lateral resolution and reducing the grating lobes by means of the synthetic aperture focusing technique (SAFT). For the time domain reconstruction, appropriately time-delayed and weighted signals are summed up. The frequency domain reconstruction is based on the similarity of the recorded signals with chirp signals. The reconstruction results experimentally confirm that the frequency domain reconstruction creates a better lateral resolution and requires less computation time. However, the time domain reconstruction produces lower grating lobes and hence results in a better overall image quality.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133824745","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
Sensibility study of the control loops of voltage and current mode controlled DC-DC converters by means of robust parametric control theory 基于鲁棒参数控制理论的电压电流模控DC-DC变换器控制回路敏感性研究
Gabriel Garcerh, Pablo Carbonell, Antonio Abell
{"title":"Sensibility study of the control loops of voltage and current mode controlled DC-DC converters by means of robust parametric control theory","authors":"Gabriel Garcerh, Pablo Carbonell, Antonio Abell","doi":"10.1109/ISIE.1999.798682","DOIUrl":"https://doi.org/10.1109/ISIE.1999.798682","url":null,"abstract":"Robust parametric control theory is a powerful tool for the research of the robustness of linear control systems against simultaneous changes in the parameters that define the plant and controller transfer functions. The purpose of this paper is to show how those techniques can be applied to the sensibility study of voltage mode and current node controlled DC-DC converters with respect to simultaneous variations (or tolerances) of all the parameters of the power stage: line voltage, load and passive elements of the power stage (I, C, R/sub c/...). After obtaining the small-signal linear model of the voltage or current mode controlled power stage, it is possible to represent the power stage transfer function as a linear interval plant, and to predict, once a regulator has been designed, the worst case bandwidth and stability margins of the converter control loop with all values of the power stage components varying simultaneously inside known and closed intervals, i.e., with any combination of those values. In fact, envelopes of the open and closed loop dynamic performance of the system can be obtained, in form of Bode and Nyquist plots envelopes. In this work, the robust parametric study of a buck converter under voltage and current mode (current injected control or CIC) control is shown, with the theoretical Bode and Nyquist envelopes obtained with MATLAB/sup TM/ software.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133727954","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
Robust average current mode control of DC-DC PWM converters based on a three controller scheme 基于三控制器方案的DC-DC PWM变换器鲁棒平均电流模式控制
G. Garcerá, M. Pascual, E. Figueres
{"title":"Robust average current mode control of DC-DC PWM converters based on a three controller scheme","authors":"G. Garcerá, M. Pascual, E. Figueres","doi":"10.1109/ISIE.1999.798679","DOIUrl":"https://doi.org/10.1109/ISIE.1999.798679","url":null,"abstract":"The purpose of this paper is to present a drastic improvement in the conventional ACC (average current mode control) of switching DC-DC power converters, consisting of the addition of an auxiliary controller in the control loop, besides the current and voltage regulators. The model-based auxiliary controller preserves the closed loop small-signal bandwidth (including loop gain crossover frequency and stability margins) of buck derived converters over a large range of variation of the power stage passive elements, the load and the line voltage. Moreover, this control scheme shows much better perturbation rejection properties (closed loop impedance and audiosusceptibility) than conventional ACC. From a control theory point of view, robust performance is achieved preserving stability. A 5 V-5 A, 50 kHz buck prototype operating from an input voltage ranging from 30 V to 15 V has been experimentally tested with different LC output filters, line and load conditions, including discontinuous conduction mode. Measurements of the small signal frequency response of the converter (loop gain, closed loop audiosusceptibility and output impedance) have been carried out, showing the improvement achieved by the proposed control scheme. The empirical large signal response of the converter, under load steps, is also shown in this paper in order to validate the concept.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115125996","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
Vibration control of the grasped object with cooperative multiple manipulator 多机械手协作抓取物体的振动控制
T. Matsumoto, T. Murakami
{"title":"Vibration control of the grasped object with cooperative multiple manipulator","authors":"T. Matsumoto, T. Murakami","doi":"10.1109/ISIE.1999.801777","DOIUrl":"https://doi.org/10.1109/ISIE.1999.801777","url":null,"abstract":"In a cooperative task using plural manipulators, an important issue to consider is the vibration of the grasped object. In particular, it is required to suppress the vibration which deteriorates the stable grasping motion. From this point of view, this paper describes a vibration suppression method of the grasped object by a multiple cooperative manipulator. To address the above issue, it is necessary to consider both the grasping force and vibration suppression control at the same time. In the general cooperative motion system, however, it is difficult to realize both control simultaneously and optimally. To improve the above problem, this paper proposes a construction method of hybrid controller and its application to the task planning of the grasped motion without the vibration. The numerical and experimental results also show the effectiveness of the proposed approach.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117059973","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
Analysis of speed control system for electrical drives with elastic transmission 弹性传动电传动速度控制系统分析
J. Deur, N. Peric
{"title":"Analysis of speed control system for electrical drives with elastic transmission","authors":"J. Deur, N. Peric","doi":"10.1109/ISIE.1999.798684","DOIUrl":"https://doi.org/10.1109/ISIE.1999.798684","url":null,"abstract":"The behavior of the speed control system for electrical drives with elastic transmission is analyzed. Several speed controller types and optimization methods are discussed. The control system is analyzed in regard to stability, well-damped behavior with respect to the speed reference and the load torque, and robustness to inner current loop modeling errors and sampling time choice. An algebraic analysis method based on the optimum damping characteristic ratios is applied. The analysis is provided for a wide range of characteristic process parameter ratios. The results of the analysis are experimentally verified on a laboratory model of the electrical drive.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123429244","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: 19
A new, simple, low-cost, modular arrangement of high power factor for both DC and AC welding 一种新的、简单的、低成本的、模块化的高功率因数安排,适用于直流和交流焊接
J. Borka, M. Horváth
{"title":"A new, simple, low-cost, modular arrangement of high power factor for both DC and AC welding","authors":"J. Borka, M. Horváth","doi":"10.1109/ISIE.1999.798708","DOIUrl":"https://doi.org/10.1109/ISIE.1999.798708","url":null,"abstract":"Inert gas welding technology with wolfram electrodes requires DC current for welding steel and AC current for welding aluminium. A wide choice of DC welding equipment is available on the market at fairly reasonable prices. Regarding AC welding equipment, the situation is not so simple. They are much more complicated equipment at relatively high prices. For aluminium welding, in the case of an AC welding equipment, welding current has to change with a frequency of 30-200 Hz periodically and rectangularly that the electron flow of changing direction should break the oxide layer on the aluminium surface. However, this technology requires a fairly smooth, but modulated current amplitude at both polarities. Besides, the polarity change of welding current of high rate of rise is a fundamental requirement to avoid arc extinction. If it is not met, the arc should be ignited at every polarity change by a high voltage igniter that has numerous drawbacks. The paper shows simple, low-cost, modular welding equipment for both DC and AC welding. The solution developed by the authors contains one or more DC welding equipment, depending on the current requirements, and an output AC inverter of full bridge connection of a suitable rated current. The results of the development are justified by laboratory tests.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125977716","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: 13
Telerobot control via Internet 通过互联网遥控机器人
R. Šafarič, K. Jezernik, D. Calkin, R. Parkin
{"title":"Telerobot control via Internet","authors":"R. Šafarič, K. Jezernik, D. Calkin, R. Parkin","doi":"10.1109/ISIE.1999.801802","DOIUrl":"https://doi.org/10.1109/ISIE.1999.801802","url":null,"abstract":"This paper describes design issues involved in providing remote users with Internet access to a laboratory robotic system and presents a real experiment which enables students to control a six degree teleoperated robotic manipulator. Simulation tools for the robotic hardware are developed using Java and VRML 97 to create a desktop virtual reality environment which improves the visualisation of the manipulator hardware and associated workspace. The V-Collide library of C++ collision detection functions has also been integrated within the simulator to provide realistic detection between the virtual robot and its associated workspace. Communication between the remote user and project server via the Internet, interface electronics and control software is also discussed.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126148603","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: 22
Design of an electro pneumatic micro robot for in-pipe inspection 电-气微型管道检测机器人的设计
C. Anthierens, A. Ciftci, M. Bétemps
{"title":"Design of an electro pneumatic micro robot for in-pipe inspection","authors":"C. Anthierens, A. Ciftci, M. Bétemps","doi":"10.1109/ISIE.1999.798746","DOIUrl":"https://doi.org/10.1109/ISIE.1999.798746","url":null,"abstract":"The presentation of a micro robot for in-pipe inspection in 17 mm diameter pipes is detailed from the design to the implementation. A large part is dedicated to the modelling and estimation of each module. A completed modelling of a Hall effect sensor has been carried out in order to provide an accuracy of the displacement measurements better than 15 micrometers. Then the modelling and simulation of the whole robot have been compared to the implemented results. Finally, performances are discussed and perspectives are given to improve the locomotion task with the pneumatic actuator.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124858608","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: 61
An implementation of a rotational inverted pendulum using adaptive fuzzy controllers 利用自适应模糊控制器实现旋转倒立摆
G. Park, M. Baeg, S. Hong, Hai-won Yang
{"title":"An implementation of a rotational inverted pendulum using adaptive fuzzy controllers","authors":"G. Park, M. Baeg, S. Hong, Hai-won Yang","doi":"10.1109/ISIE.1999.801823","DOIUrl":"https://doi.org/10.1109/ISIE.1999.801823","url":null,"abstract":"In this paper, three controllers are considered for a rotational inverted pendulum system (RIPS). The control objectives are to position the pendulum at the upright position and to regulate it at the specified position. The fuzzy control is an effective way to achieve the control objectives in a nonlinear system such as the RIPS. PID controller, fuzzy PID controller and adaptive fuzzy controller are proposed to obtain increased control performance and stability. This paper consists of three parts: (1) modeling of the RIPS, (2) introduction of three control methods for the control of the system, and (3) making a prototype of the system and experimental environment to compare the performances of three controllers.","PeriodicalId":227402,"journal":{"name":"ISIE '99. Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.99TH8465)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129505081","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
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