Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312343
J. Jang
A simple model is developed to predict the dynamic temperature variations of PEMFC (proton exchange membrane fuel cell) and its cooling system for automotive applications. A lumped heat capacity method (LHCM) is used to model, but the governing equations for the fuel cell stack, radiator, cooling water, and air are conjugated. The model predicts the transient temperatures of the fuel cell stack, radiator, cooling water, and air for stepwise power changes. Parametric studies show that the increase in the heat transfer coefficient of the cooling water at the radiator is more effective to cool the fuel cell than that at the fuel cell. The increase of the air flow rate at the radiator decreases the operating temperature of the system. This simple model could be a useful tool to decide the dimension of each component of the system for required power.
{"title":"A Simple Model Predicting Transient Thermal Management of PEMFC and Cooling System","authors":"J. Jang","doi":"10.1109/IFOST.2006.312343","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312343","url":null,"abstract":"A simple model is developed to predict the dynamic temperature variations of PEMFC (proton exchange membrane fuel cell) and its cooling system for automotive applications. A lumped heat capacity method (LHCM) is used to model, but the governing equations for the fuel cell stack, radiator, cooling water, and air are conjugated. The model predicts the transient temperatures of the fuel cell stack, radiator, cooling water, and air for stepwise power changes. Parametric studies show that the increase in the heat transfer coefficient of the cooling water at the radiator is more effective to cool the fuel cell than that at the fuel cell. The increase of the air flow rate at the radiator decreases the operating temperature of the system. This simple model could be a useful tool to decide the dimension of each component of the system for required power.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115223216","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312249
Hyunwoo Cho, A. Lee, H. Chi, S. Song, Gyeong Su Gwon, Ju Sung Park
The flip-flop base ARM7 core is designed and fabricated with 0.18 mum CMOS process. The designed processor core can be easily synthesized with the various CMOS libraries because it doesn't have the clock skew and race problem. The conventional ARM7 core has 32times8 multiplier, but we modified the multiplier with 32times16 type to improve the performance of the core. The multiplier is optimized in the point of the operating speed and the gates count. The fabricated chip is tested by the various methods, such as the single instruction test and the instruction combination test, and the application programs. According to the test results, the designed processor carries out the 462 instructions of the processor and the several application algorithms, and the operating at the 98 MHz clock rate.
采用0.18 μ m CMOS工艺设计并制作了基于触发器的ARM7内核。所设计的处理器内核不存在时钟偏差和竞争问题，可以很容易地与各种CMOS库进行合成。传统的ARM7内核是32times8倍频，为了提高内核的性能，我们将其修改为32times16倍频。该乘法器在运行速度和门数方面进行了优化。采用单指令测试和指令组合测试等多种方法对所制备的芯片进行了测试，并编写了应用程序。根据测试结果，所设计的处理器执行处理器的462条指令和几种应用算法，并在98 MHz时钟速率下工作。
{"title":"An ARM7 processor with the Modified Multiplier and the Flip-Flop Based Pipelines","authors":"Hyunwoo Cho, A. Lee, H. Chi, S. Song, Gyeong Su Gwon, Ju Sung Park","doi":"10.1109/IFOST.2006.312249","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312249","url":null,"abstract":"The flip-flop base ARM7 core is designed and fabricated with 0.18 mum CMOS process. The designed processor core can be easily synthesized with the various CMOS libraries because it doesn't have the clock skew and race problem. The conventional ARM7 core has 32times8 multiplier, but we modified the multiplier with 32times16 type to improve the performance of the core. The multiplier is optimized in the point of the operating speed and the gates count. The fabricated chip is tested by the various methods, such as the single instruction test and the instruction combination test, and the application programs. According to the test results, the designed processor carries out the 462 instructions of the processor and the several application algorithms, and the operating at the 98 MHz clock rate.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123091833","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312274
Phuong-Trinh Pham-Ngoc, K. Jo
This paper presents an improved system for detecting multiple faces in a video sequence where detection is not limited to frontal view. We propose an adaptive selection of skin models from two different ones in RGB and ratio rgb space to overcome the illumination problem caused by automatic focus of camera. With the proposed solution, we receive more reasonable skin detection for different human races. We modify local binary pattern (LBP) by adding a set of spatial templates. This LBP considers both principal local shapes and spatial textures of facial components. Human face is represented by a histogram of LBP coefficients. Moreover, the grayscale image of human face is changed to discrete cosine transform (DCT) coefficients used in embedded hidden Markov models (eHMMs). A modified LBP (mLBP) histogram matching and eHMMs are composed to hierarchical classifier to determine whether skin regions are faces or not. The results of our system on different cameras are presented and discussed. We compare the performance capability of our system with other systems using separately eHMMs or LBP histogram matching. The proposed system can work well to detect attitudes of faces like frontal, rotated and profile faces.
{"title":"Multi-face Detection System in Video Sequence","authors":"Phuong-Trinh Pham-Ngoc, K. Jo","doi":"10.1109/IFOST.2006.312274","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312274","url":null,"abstract":"This paper presents an improved system for detecting multiple faces in a video sequence where detection is not limited to frontal view. We propose an adaptive selection of skin models from two different ones in RGB and ratio rgb space to overcome the illumination problem caused by automatic focus of camera. With the proposed solution, we receive more reasonable skin detection for different human races. We modify local binary pattern (LBP) by adding a set of spatial templates. This LBP considers both principal local shapes and spatial textures of facial components. Human face is represented by a histogram of LBP coefficients. Moreover, the grayscale image of human face is changed to discrete cosine transform (DCT) coefficients used in embedded hidden Markov models (eHMMs). A modified LBP (mLBP) histogram matching and eHMMs are composed to hierarchical classifier to determine whether skin regions are faces or not. The results of our system on different cameras are presented and discussed. We compare the performance capability of our system with other systems using separately eHMMs or LBP histogram matching. The proposed system can work well to detect attitudes of faces like frontal, rotated and profile faces.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126825720","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312284
Byungki Ahn, T. Lim
Fuel cell vehicles, which are driven by electrical power generated from hydrogen fuel, are becoming a 'hot potato' in the automotive industry. It is now well known that the crude oil supply will run out in about forty years and the earth needs a different type of energy resource that can last indefinitely. 'Hydrogen era' is expected to begin in the 2020's, and the biggest market for hydrogen fuel cells will certainly be the auto industry. However, the cost of the fuel cell vehicle or the individual parts is far from being realistic from a mass production standpoint. Every major auto maker is trying to reduce the cost and enhance manufacturability, and we are about to see the promising outcome. Hyundai-Kia Motors has the largest fuel cell research center in Korea and it has developed several different types of FCVs since its first launch of Santa Fe FCV in 2000. In this paper, we present the basic principles of fuel cells and the history of fuel cell vehicles. In addition, the status of FCV development at Hyundai-Kia Motors are introduced. Verification programs sponsored by Korean and American governments are presented to show how actively we are collaborating with other fuel cell-related companies in order to make FCVs commercially available.
{"title":"Fuel Cell Vehicle Development at Hyundai-Kia Motors","authors":"Byungki Ahn, T. Lim","doi":"10.1109/IFOST.2006.312284","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312284","url":null,"abstract":"Fuel cell vehicles, which are driven by electrical power generated from hydrogen fuel, are becoming a 'hot potato' in the automotive industry. It is now well known that the crude oil supply will run out in about forty years and the earth needs a different type of energy resource that can last indefinitely. 'Hydrogen era' is expected to begin in the 2020's, and the biggest market for hydrogen fuel cells will certainly be the auto industry. However, the cost of the fuel cell vehicle or the individual parts is far from being realistic from a mass production standpoint. Every major auto maker is trying to reduce the cost and enhance manufacturability, and we are about to see the promising outcome. Hyundai-Kia Motors has the largest fuel cell research center in Korea and it has developed several different types of FCVs since its first launch of Santa Fe FCV in 2000. In this paper, we present the basic principles of fuel cells and the history of fuel cell vehicles. In addition, the status of FCV development at Hyundai-Kia Motors are introduced. Verification programs sponsored by Korean and American governments are presented to show how actively we are collaborating with other fuel cell-related companies in order to make FCVs commercially available.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122315804","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312305
B. Bochenkov, M. Tyurin, V. Krinichnyi
With a view of increase of dynamic accuracy of electric power steering system (EPSS) the following problems have been solved: the mathematical model with the account kinematic parts has been developed, the nature of dynamic mistakes has been revealed, the control's algorithm as a signal of the task for development of the compensating steering torque of the electric motor has been synthesized, allowing to form on the output shaft of the EPSS the moment proportional to the effort put to a steering wheel by the driver in static and dynamic modes. Reducerfree EPSS represents a mechatronic unit, which based on permanent magnet synchronous motor with built-in torque sensor. The control algorithm is rather simple and provides additional torque on output of the steering column proportionally to the torque which driver applies to a steering wheel. But the complexity consists in formation of a forward signal for motor's control to reduce the steering activity required of the driver and to save a realistic feeling of actual motoring conditions by compensating of design features of the mechatronic unit. We addressed this problem in two ways: by developing methods to compensate for the motor's inertia and elastic torque and by developing torque's measuring system. In particular, the control algorithm offered by authors improves self return of steering wheel, and the developed elements of the measuring system of EPSS simplify realization of control's algorithm and promote safety of drive.
{"title":"To a question about ways of forming a signal for producing additional torque of electric power steering system","authors":"B. Bochenkov, M. Tyurin, V. Krinichnyi","doi":"10.1109/IFOST.2006.312305","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312305","url":null,"abstract":"With a view of increase of dynamic accuracy of electric power steering system (EPSS) the following problems have been solved: the mathematical model with the account kinematic parts has been developed, the nature of dynamic mistakes has been revealed, the control's algorithm as a signal of the task for development of the compensating steering torque of the electric motor has been synthesized, allowing to form on the output shaft of the EPSS the moment proportional to the effort put to a steering wheel by the driver in static and dynamic modes. Reducerfree EPSS represents a mechatronic unit, which based on permanent magnet synchronous motor with built-in torque sensor. The control algorithm is rather simple and provides additional torque on output of the steering column proportionally to the torque which driver applies to a steering wheel. But the complexity consists in formation of a forward signal for motor's control to reduce the steering activity required of the driver and to save a realistic feeling of actual motoring conditions by compensating of design features of the mechatronic unit. We addressed this problem in two ways: by developing methods to compensate for the motor's inertia and elastic torque and by developing torque's measuring system. In particular, the control algorithm offered by authors improves self return of steering wheel, and the developed elements of the measuring system of EPSS simplify realization of control's algorithm and promote safety of drive.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114159985","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312304
Hyong-Keun An, Jae-Jin Koh
A user of a digital camera produces lots of images throughout a year and saves them to his local hard disk. After some time the amount of photos exceeds the critical mass manageable without specialized tools. Most people create an intuitive structure for storing their personal image library. They create folders for images that are taken in the same context, for example "Photos from the IFOST 2006 Forum", however this does not enable the user to find a photo which shows a specific person, object or even expresses a specific idea or feeling when needed. In this paper a new approach to metadata production is presented. For this purpose, a new interactive tool for multimedia content acquisition and classification has been developed. The user can decompose a given multimedia content into units and easily annotate each until adding basic information such as place, time, locate, etc. as well classification information such as even type, relationship type, etc. according to the MPEG-7 standard. At the end of this production, the tool automatically produces a semantic description of the overall set of the annotated units. The new idea proposed in this work is to combine the intrinsic semantics of each annotated unit with implicit semantic information derived from the structural description, hence reducing the needs to perform complex signal processing operations on the content.
{"title":"Annotation of Multimedia data using Semantic Metadata","authors":"Hyong-Keun An, Jae-Jin Koh","doi":"10.1109/IFOST.2006.312304","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312304","url":null,"abstract":"A user of a digital camera produces lots of images throughout a year and saves them to his local hard disk. After some time the amount of photos exceeds the critical mass manageable without specialized tools. Most people create an intuitive structure for storing their personal image library. They create folders for images that are taken in the same context, for example \"Photos from the IFOST 2006 Forum\", however this does not enable the user to find a photo which shows a specific person, object or even expresses a specific idea or feeling when needed. In this paper a new approach to metadata production is presented. For this purpose, a new interactive tool for multimedia content acquisition and classification has been developed. The user can decompose a given multimedia content into units and easily annotate each until adding basic information such as place, time, locate, etc. as well classification information such as even type, relationship type, etc. according to the MPEG-7 standard. At the end of this production, the tool automatically produces a semantic description of the overall set of the annotated units. The new idea proposed in this work is to combine the intrinsic semantics of each annotated unit with implicit semantic information derived from the structural description, hence reducing the needs to perform complex signal processing operations on the content.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128521251","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312239
Yansong Wang, Chang-Myung Lee, Hui He, Y. Tian
A new intelligent technique for sound quality evaluation, the so-called wavelet pre-processing neural network (WT-NN) model, is investigated in this paper. Based on pass-by vehicle noises, the WT-NN sound quality evaluation model was developed by combining the techniques of wavelet analysis and neural network (NN) classification. A wavelet-based, 21-point model for vehicle noise feature extraction was established. Verification shows that the trained WT-NN models are accurate and effective for sound quality evaluation of nonstationary vehicle noises. Due to its outstanding time-frequency characteristics and intelligent functions, the WT-NN model is proved more advanced than the in-situ sound quality evaluation models in common use. The proposed WT-NN model can be applied to both stationary and nonstationary signals and even to transient ones. The WT-NN technique is suggested not only for the prediction, classification, and comparison of the sound quality of pass-by vehicle noises, but also for applications in other sound-related engineering fields, in place of conventional psychoacoustical models.
{"title":"A New Intelligent Technique for Sound Quality Evaluation of Nonstationary Vehicle Noises","authors":"Yansong Wang, Chang-Myung Lee, Hui He, Y. Tian","doi":"10.1109/IFOST.2006.312239","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312239","url":null,"abstract":"A new intelligent technique for sound quality evaluation, the so-called wavelet pre-processing neural network (WT-NN) model, is investigated in this paper. Based on pass-by vehicle noises, the WT-NN sound quality evaluation model was developed by combining the techniques of wavelet analysis and neural network (NN) classification. A wavelet-based, 21-point model for vehicle noise feature extraction was established. Verification shows that the trained WT-NN models are accurate and effective for sound quality evaluation of nonstationary vehicle noises. Due to its outstanding time-frequency characteristics and intelligent functions, the WT-NN model is proved more advanced than the in-situ sound quality evaluation models in common use. The proposed WT-NN model can be applied to both stationary and nonstationary signals and even to transient ones. The WT-NN technique is suggested not only for the prediction, classification, and comparison of the sound quality of pass-by vehicle noises, but also for applications in other sound-related engineering fields, in place of conventional psychoacoustical models.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129002742","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312328
Y. Nigirich, I. Olegin
The numerical-analytical method of the determination of the efficient elastic modules in composition material is offered. The material is prototyped by endless elastic medium with alike disjoint inclusions, located in nodes two-dimensional or three-dimensional orthogonal of the lattice. On the first stage by method finite element (FEM), considering periodic nature of the strain condition and connected with this particularities strained, are defined strain and displacement on border of the inclusion typical element. On second stage these given are used directly for calculation of the efficient modules by means of the energy method and principle Eshelby J. D., allowing define the energy elastic deformation in typical element by calculations integral on surfaces of the inclusion. The proposed method in equal degree efficient at decisions of the worded problems, both for isotropic, and for anisotropic ambiences (transversal- isotropic and orthotropic). The decisions are received for circular and elliptical inclusions in flat event, but in three-dimensional event for spherical and ellipsoidal of the inclusions.
给出了确定复合材料中有效弹性模量的数值解析方法。材料的原型是无限弹性介质，具有相似的不相交夹杂，位于与晶格正交的二维或三维节点上。第一阶段采用有限元方法，考虑应变条件的周期性，结合这种特殊的应变，定义了夹杂体典型单元边界上的应变和位移;在第二阶段，利用能量法和Eshelby J. D的原理直接计算有效模量，通过计算夹杂物表面上的积分来定义典型单元的能量弹性变形。所提出的方法在各向同性和各向异性环境(横向各向同性和正交各向异性)下对有字问题的判定具有同等程度的效率。在平面事件中，对圆形和椭圆形夹杂接受判定，而在三维事件中，对球形和椭球形夹杂接受判定。
{"title":"The Determination of the Efficient Elastic Modules in Composition Material","authors":"Y. Nigirich, I. Olegin","doi":"10.1109/IFOST.2006.312328","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312328","url":null,"abstract":"The numerical-analytical method of the determination of the efficient elastic modules in composition material is offered. The material is prototyped by endless elastic medium with alike disjoint inclusions, located in nodes two-dimensional or three-dimensional orthogonal of the lattice. On the first stage by method finite element (FEM), considering periodic nature of the strain condition and connected with this particularities strained, are defined strain and displacement on border of the inclusion typical element. On second stage these given are used directly for calculation of the efficient modules by means of the energy method and principle Eshelby J. D., allowing define the energy elastic deformation in typical element by calculations integral on surfaces of the inclusion. The proposed method in equal degree efficient at decisions of the worded problems, both for isotropic, and for anisotropic ambiences (transversal- isotropic and orthotropic). The decisions are received for circular and elliptical inclusions in flat event, but in three-dimensional event for spherical and ellipsoidal of the inclusions.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114308472","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312347
H. Ryu, Jae-Kook Lee, Eoun-Taeg Hwang, Kyoung-Hang Woo, Won-Ho Choi
This paper proposes a self-calibration method of robots those are use in industrial vehicle assembly lines. The proposed method is a position compensation using laser sensor and vision cameras. Because the laser sensor is cross type sensor which can scan a horizontal and vertical line, it is efficient way to detect a feature of vehicle and winding shape of vehicle's body. For position compensation of 3-Dimensional axis, we applied block interpolation method. For selecting feature point, pattern matching method is used and 3-D position is selected by Euclidean distance mapping between 462 feature values and evaluated feature point. In order to evaluate the proposed algorithm, experiments are performed in real industrial vehicle assembly line. As the result of the field test, it shows that robot's working point can be displayed 3-D points. These points are used to diagnosis error of position and reselecting working point.
{"title":"A 3-D Position Compensation Method of Industrial Robot Using Block Interpolation","authors":"H. Ryu, Jae-Kook Lee, Eoun-Taeg Hwang, Kyoung-Hang Woo, Won-Ho Choi","doi":"10.1109/IFOST.2006.312347","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312347","url":null,"abstract":"This paper proposes a self-calibration method of robots those are use in industrial vehicle assembly lines. The proposed method is a position compensation using laser sensor and vision cameras. Because the laser sensor is cross type sensor which can scan a horizontal and vertical line, it is efficient way to detect a feature of vehicle and winding shape of vehicle's body. For position compensation of 3-Dimensional axis, we applied block interpolation method. For selecting feature point, pattern matching method is used and 3-D position is selected by Euclidean distance mapping between 462 feature values and evaluated feature point. In order to evaluate the proposed algorithm, experiments are performed in real industrial vehicle assembly line. As the result of the field test, it shows that robot's working point can be displayed 3-D points. These points are used to diagnosis error of position and reselecting working point.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126567690","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}
Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312237
V. Phan, Hong‐Hee Lee
Typical dual-motor or multiple-motor applications include industrial machine, heating ventilation air conditioning equipment, automobiles, and many others. The traditional method to control a dual-motor is using two separate processors developed for power circuits. In this paper, a proposed control scheme using only one controller to drive a dual-inverter supplying voltage directly to two separate motors is described. The field oriented control (FOC) technique is investigated to control motors in the proposed control configuration. The proposed scheme is absolutely useful and necessary for vehicle applications because its outstanding contribution of reduced number of controllers helps to save space in a car and decreases overall costs in automobile mass production. All control algorithms to drive dual-motor system are implemented by software program only implemented by a digital signal processor (DSP) controller without any additional processor or hardware prototype. Simplicity, flexibility, and possibility of dual three-phase inverter for the two-motor system control in vehicle applications are the major considerations in this study.
{"title":"Dual Three-Phase Inverter Using a Single Processor to Drive Two Motors in Electric Vehicle Applications","authors":"V. Phan, Hong‐Hee Lee","doi":"10.1109/IFOST.2006.312237","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312237","url":null,"abstract":"Typical dual-motor or multiple-motor applications include industrial machine, heating ventilation air conditioning equipment, automobiles, and many others. The traditional method to control a dual-motor is using two separate processors developed for power circuits. In this paper, a proposed control scheme using only one controller to drive a dual-inverter supplying voltage directly to two separate motors is described. The field oriented control (FOC) technique is investigated to control motors in the proposed control configuration. The proposed scheme is absolutely useful and necessary for vehicle applications because its outstanding contribution of reduced number of controllers helps to save space in a car and decreases overall costs in automobile mass production. All control algorithms to drive dual-motor system are implemented by software program only implemented by a digital signal processor (DSP) controller without any additional processor or hardware prototype. Simplicity, flexibility, and possibility of dual three-phase inverter for the two-motor system control in vehicle applications are the major considerations in this study.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133995241","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}
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