Pub Date : 2006-10-01DOI: 10.1109/IFOST.2006.312258
Zhou Meilan, W. Xudong, Zhou Yong-qin
In order to implement the demand of minimum fuel consumption and good power performance for continuously variable transmission (CVT) car, aiming at the whole vehicle model including the engine, the clutch, the CVT and load, the dynamics model of CVT system is established according to different stage of clutch engaging, based on that the dynamic integrated simulation model is developed. Aiming at the running situation of car being complex and variable frequently and the input and output of transmission system being strong coupling, a PD speed ratio controller of self-adjusting parameter and a clutch torque fuzzy controller are devised respectively. Finally three typical running situations are simulated and analyzed, including starting-accelerating, starting-decelerating and encountering resistance disturbance. The steady car speeds of three simulation situations are 109.40 Km/h, 39.93 Km/h and 74.48 Km/h respectively, on the other hand, the theoretical values of that are 109.97 Km/h,39.90 Km/h and 74.49 Km/h respectively. The dynamical curves of simulation demonstrates that the simulation model established is correct, the controllers devised have good control effect and implement reasonable match between engine and CVT.
{"title":"Modeling and Simulation of Continuously Variable Transmission for Passenger Car","authors":"Zhou Meilan, W. Xudong, Zhou Yong-qin","doi":"10.1109/IFOST.2006.312258","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312258","url":null,"abstract":"In order to implement the demand of minimum fuel consumption and good power performance for continuously variable transmission (CVT) car, aiming at the whole vehicle model including the engine, the clutch, the CVT and load, the dynamics model of CVT system is established according to different stage of clutch engaging, based on that the dynamic integrated simulation model is developed. Aiming at the running situation of car being complex and variable frequently and the input and output of transmission system being strong coupling, a PD speed ratio controller of self-adjusting parameter and a clutch torque fuzzy controller are devised respectively. Finally three typical running situations are simulated and analyzed, including starting-accelerating, starting-decelerating and encountering resistance disturbance. The steady car speeds of three simulation situations are 109.40 Km/h, 39.93 Km/h and 74.48 Km/h respectively, on the other hand, the theoretical values of that are 109.97 Km/h,39.90 Km/h and 74.49 Km/h respectively. The dynamical curves of simulation demonstrates that the simulation model established is correct, the controllers devised have good control effect and implement reasonable match between engine and CVT.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"120 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":"115692708","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.2006.312345
E. Kim, K. Lim, Y.H. Kim, K. Lee
For application of cast-forging process with Al-Si hypereutectic alloys, casting experiments are carried out by adding P and Sr to Al-Si hypereutectic alloys for eutectic and primary Si refinement treatment. We experimented on the mechanical properties according to microstructural changes, forging ability test and also investigated the mechanical properties after forging. The finest microstructure could be observed respectively when 0.075 wt.% Sr and 0.1 wt.% P were added. In this case, tensile strength and elongation increased much more than no addition as casting. After high temperature deformation simulation test with grain refinement specimens was carried out about 60 N/mm of specimen was confirmed. After hot forging, tensile strength and elongation wear increased. It was considered that casting defect was removed by compressive working.
{"title":"A Study on the Microstructure Change with Modification and Cast-forging in Hypereutectic Al-Si Alloys","authors":"E. Kim, K. Lim, Y.H. Kim, K. Lee","doi":"10.1109/IFOST.2006.312345","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312345","url":null,"abstract":"For application of cast-forging process with Al-Si hypereutectic alloys, casting experiments are carried out by adding P and Sr to Al-Si hypereutectic alloys for eutectic and primary Si refinement treatment. We experimented on the mechanical properties according to microstructural changes, forging ability test and also investigated the mechanical properties after forging. The finest microstructure could be observed respectively when 0.075 wt.% Sr and 0.1 wt.% P were added. In this case, tensile strength and elongation increased much more than no addition as casting. After high temperature deformation simulation test with grain refinement specimens was carried out about 60 N/mm of specimen was confirmed. After hot forging, tensile strength and elongation wear increased. It was considered that casting defect was removed by compressive working.","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":"124258789","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.2006.312226
A. Reshetnev, A. Vavilin, Taeho Kim, K. Jo
In this paper, we propose auto-driving method for automobile by recognition of hand trajectory. The method consists of three main steps: hand detection, wheel detection and recognition. On the step of hand detection we extract hand from image by color model. From this step we get candidate for skin regions. The wheel detection consists of edge detection, Hough transform and wheel detection which uses mean shift algorithm. The last step in our method is recognition of hand position. The result is recognition of hand position on the wheel and rotation angle of the wheel.
{"title":"Automobile Driving Interface Based on Hand Trajectory Recognition","authors":"A. Reshetnev, A. Vavilin, Taeho Kim, K. Jo","doi":"10.1109/IFOST.2006.312226","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312226","url":null,"abstract":"In this paper, we propose auto-driving method for automobile by recognition of hand trajectory. The method consists of three main steps: hand detection, wheel detection and recognition. On the step of hand detection we extract hand from image by color model. From this step we get candidate for skin regions. The wheel detection consists of edge detection, Hough transform and wheel detection which uses mean shift algorithm. The last step in our method is recognition of hand position. The result is recognition of hand position on the wheel and rotation angle of the wheel.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"137 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":"123491553","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.2006.312312
Hyun-Deok Kang, K. Jo
This paper presents the mapping function of horizontal line segments in panoramic image for 3D reconstruction of planar objects. It is interest to get the 3D geometrical information directly under the single panoramic image. The estimation of the 3D geometric information is to use the several conditions of features such as a vanishing line and point and the geometric relationship of feature as parallelism of lines from single panoramic view. This paper describes the 3D reconstruction about any features using the properties of vanishing points and curves. When the panoramic camera located on ground in perpendicular against the mirror, all vertical line segments are converged into center point in image. Horizontal line with ground plane projected as the curve on the basis of each vanishing point in image; the parallel lines with ground are projected as the curve in panoramic image. Second, it is able to obtain the parallel plane in focal point of mirror using the already known the height of mirror from the ground. The curve of horizontal edge line should intersect with the circle at infinity; two intersection points with pi phase difference converge in pair of vanishing points of each object. Consequently, this paper applies the hyperbolic mirror to get panoramic image and perform the 3D reconstruction. It can be suitable and concrete information of environment so that also robot can know the shape of environment within visible range from single panoramic image.
{"title":"Analysis of Vanishing Curves and Points of Planar Objects from Single Panoramic Image","authors":"Hyun-Deok Kang, K. Jo","doi":"10.1109/IFOST.2006.312312","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312312","url":null,"abstract":"This paper presents the mapping function of horizontal line segments in panoramic image for 3D reconstruction of planar objects. It is interest to get the 3D geometrical information directly under the single panoramic image. The estimation of the 3D geometric information is to use the several conditions of features such as a vanishing line and point and the geometric relationship of feature as parallelism of lines from single panoramic view. This paper describes the 3D reconstruction about any features using the properties of vanishing points and curves. When the panoramic camera located on ground in perpendicular against the mirror, all vertical line segments are converged into center point in image. Horizontal line with ground plane projected as the curve on the basis of each vanishing point in image; the parallel lines with ground are projected as the curve in panoramic image. Second, it is able to obtain the parallel plane in focal point of mirror using the already known the height of mirror from the ground. The curve of horizontal edge line should intersect with the circle at infinity; two intersection points with pi phase difference converge in pair of vanishing points of each object. Consequently, this paper applies the hyperbolic mirror to get panoramic image and perform the 3D reconstruction. It can be suitable and concrete information of environment so that also robot can know the shape of environment within visible range from single panoramic image.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"2 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":"127278809","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.2006.312310
W. Xudong, Zhou Meilan, Zhou Yong-qin
In order to abstain from expensive and complicated hydraulic or electric-hydraulic transmission devices, moreover to reduce the oil consumption and improve power performance further, a new type of dry hybrid belt continuously variable transmission (A-CVT)'s structure and work principle are introduced in this paper. The electronic control unit (TCU) has been developed, and the theoretical foundation of optimal speed ratio control of CVT is discussed profoundly. The speed ratio actuator motor is controlled through the method of PID fuzzy controller and non-linear voltage compensation. Through testing with the sample car, which is equipped with the developed TCU, when running at speed of 62.35 Km/h, the oil consumption is 5.64 L per 100 Km and the accelerating time is 22 s while up to 100 Km/h; by comparison, the oil consumption and accelerating time are 5.68 L and 23 s with original TCU in the same situation. The long-term tryout results indicate that the performance of our experimental car comes up to that of archetypal car on the whole. It has fine oil economy and power performance.
{"title":"Research on Electronic Control System of a New-type CVT","authors":"W. Xudong, Zhou Meilan, Zhou Yong-qin","doi":"10.1109/IFOST.2006.312310","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312310","url":null,"abstract":"In order to abstain from expensive and complicated hydraulic or electric-hydraulic transmission devices, moreover to reduce the oil consumption and improve power performance further, a new type of dry hybrid belt continuously variable transmission (A-CVT)'s structure and work principle are introduced in this paper. The electronic control unit (TCU) has been developed, and the theoretical foundation of optimal speed ratio control of CVT is discussed profoundly. The speed ratio actuator motor is controlled through the method of PID fuzzy controller and non-linear voltage compensation. Through testing with the sample car, which is equipped with the developed TCU, when running at speed of 62.35 Km/h, the oil consumption is 5.64 L per 100 Km and the accelerating time is 22 s while up to 100 Km/h; by comparison, the oil consumption and accelerating time are 5.68 L and 23 s with original TCU in the same situation. The long-term tryout results indicate that the performance of our experimental car comes up to that of archetypal car on the whole. It has fine oil economy and power performance.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"7 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":"114402468","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.2006.312270
Do Minh Ngoc, H. Oh
In this paper, we have proposed a new group dynamic source routing protocol, G-DSR, using a clustering technique for highly dynamic and large ad hoc networks. We focus on pursuing routing stability, making a fast recovery of link failure, and reducing packet overhead caused by the increase of packet header size in traditional source routing protocols. The entire nodes in a network are divided into a disjoint set of clusters, each of them being assigned a unique cluster label. A routing path is represented by a sequence of cluster labels and the nodes having an identical cluster label are responsible for delivering packets cooperatively to the cluster whose cluster label is the next one in the routing path. Because of a high probability of the existence of multiple paths between adjacent clusters, most of link failures are fixed rapidly. The protocol, we believe, is attractive for dealing with real-time traffic in military or commercial wireless networks that consist of a large number of fast moving wireless stations. We compared the protocol by resorting to simulation with some existing protocols. The result is proven to be highly dependable.
{"title":"A Group Dynamic Source Routing Protocol for Mobile Ad Hoc Networks","authors":"Do Minh Ngoc, H. Oh","doi":"10.1109/IFOST.2006.312270","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312270","url":null,"abstract":"In this paper, we have proposed a new group dynamic source routing protocol, G-DSR, using a clustering technique for highly dynamic and large ad hoc networks. We focus on pursuing routing stability, making a fast recovery of link failure, and reducing packet overhead caused by the increase of packet header size in traditional source routing protocols. The entire nodes in a network are divided into a disjoint set of clusters, each of them being assigned a unique cluster label. A routing path is represented by a sequence of cluster labels and the nodes having an identical cluster label are responsible for delivering packets cooperatively to the cluster whose cluster label is the next one in the routing path. Because of a high probability of the existence of multiple paths between adjacent clusters, most of link failures are fixed rapidly. The protocol, we believe, is attractive for dealing with real-time traffic in military or commercial wireless networks that consist of a large number of fast moving wireless stations. We compared the protocol by resorting to simulation with some existing protocols. The result is proven to be highly dependable.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"20 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":"129758687","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.2006.312319
N. Nhờ, Hong‐Hee Lee, Nguyen Huy Khuong
Recently, an on-line step pulse PWM method has been introduced for cascade multilevel inverters. The simplicity of this method was derived from the principle control between two defined trajectories. For achieving good output performances, several exact angular sets are needed to be determined in advance by solving the trigonometric equations. If the number of step levels increases, then solving the transcendental equations for exact solutions may be quite difficult. This paper introduces a simple method to overcome the previously mentioned problem while number of step pulses is high. The principle control between two defined angular trajectories will again be used to obtain a linear control characteristics of fundamental voltages for the entire modulation index, including over modulation and the corresponding limit angular trajectories will be deduced appropriately from sinusoidal reference. The method will be mathematically formulated and validated. Some simulation results will be also presented.
{"title":"Sinusoidal Based Step Pulse PWM Method in Cascade Multilevel Inverters","authors":"N. Nhờ, Hong‐Hee Lee, Nguyen Huy Khuong","doi":"10.1109/IFOST.2006.312319","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312319","url":null,"abstract":"Recently, an on-line step pulse PWM method has been introduced for cascade multilevel inverters. The simplicity of this method was derived from the principle control between two defined trajectories. For achieving good output performances, several exact angular sets are needed to be determined in advance by solving the trigonometric equations. If the number of step levels increases, then solving the transcendental equations for exact solutions may be quite difficult. This paper introduces a simple method to overcome the previously mentioned problem while number of step pulses is high. The principle control between two defined angular trajectories will again be used to obtain a linear control characteristics of fundamental voltages for the entire modulation index, including over modulation and the corresponding limit angular trajectories will be deduced appropriately from sinusoidal reference. The method will be mathematically formulated and validated. Some simulation results will be also presented.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"34 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":"133355426","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.2006.312281
Y. Ko, S. Kim, Hyunsoo Park, J. Lim
Microalloyed steel has been widely used mainly for cost saving and weight reduction by optimizing the component design. Numerous experimental works for microalloyed and alloyed steels carried out. The optimum designs of preform for the busting and blocking stages during forging were investigated. Various parameters were evaluated by FE analysis such as temperature, strain and strain rate for hot forming. It is found that a new type of microalloyed crankshaft exhibits a similar fatigue limit compared to the alloy steel. Fatigue tests have been carried out with standard samples from forged crankshafts, and rig tests have been performed with machined crankshaft of different materials. We also analyzed the actual stress by applying strain gauges on the crankshaft. From the above evaluation results, we can determine the safety factor of crankshaft and thus, enable to optimize the design and materials for maximizing the engine performance.
{"title":"Assessment of Microalloying effect to the New Automotive Forged Steel Parts","authors":"Y. Ko, S. Kim, Hyunsoo Park, J. Lim","doi":"10.1109/IFOST.2006.312281","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312281","url":null,"abstract":"Microalloyed steel has been widely used mainly for cost saving and weight reduction by optimizing the component design. Numerous experimental works for microalloyed and alloyed steels carried out. The optimum designs of preform for the busting and blocking stages during forging were investigated. Various parameters were evaluated by FE analysis such as temperature, strain and strain rate for hot forming. It is found that a new type of microalloyed crankshaft exhibits a similar fatigue limit compared to the alloy steel. Fatigue tests have been carried out with standard samples from forged crankshafts, and rig tests have been performed with machined crankshaft of different materials. We also analyzed the actual stress by applying strain gauges on the crankshaft. From the above evaluation results, we can determine the safety factor of crankshaft and thus, enable to optimize the design and materials for maximizing the engine performance.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"108 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":"124813700","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.2006.312306
Do Van Tuan, Hyekyung Jeong, Hoon Oh, U. Chong
A full audio application for a real-time embedded music system is designed based on CODARTS (concurrent design approach for real-time systems) approach that is appropriately dealing with concurrent tasking architecture. The existing approaches have not provided a real-time multi-tasking model. So, it suffers from increasing complexity, resulting in degradation of design flexibility. In this paper, we propose a new concurrent tasking architecture by employing the CODARTS approach for the real-time embedded music system, wherein all tasks in the system are examined for satisfying the requirements of real-time operation.
基于CODARTS (concurrent design approach for real-time system)方法，设计了一款适用于实时嵌入式音乐系统的完整音频应用程序。现有的方法没有提供实时的多任务模型。因此，它的复杂性不断增加，导致设计灵活性的降低。本文采用codart方法，提出了一种新的实时嵌入式音乐系统的并发任务架构，并对系统中的所有任务进行了检查，以满足实时操作的要求。
{"title":"Concurrent Design of Audio Application for Embedded Music Systems","authors":"Do Van Tuan, Hyekyung Jeong, Hoon Oh, U. Chong","doi":"10.1109/IFOST.2006.312306","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312306","url":null,"abstract":"A full audio application for a real-time embedded music system is designed based on CODARTS (concurrent design approach for real-time systems) approach that is appropriately dealing with concurrent tasking architecture. The existing approaches have not provided a real-time multi-tasking model. So, it suffers from increasing complexity, resulting in degradation of design flexibility. In this paper, we propose a new concurrent tasking architecture by employing the CODARTS approach for the real-time embedded music system, wherein all tasks in the system are examined for satisfying the requirements of real-time operation.","PeriodicalId":103784,"journal":{"name":"2006 International Forum on Strategic Technology","volume":"18 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":"127819809","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.2006.312353
Wan-Gi Kim, Jong-In Lee, Keun-Woong Kim, Yoo-Sung Kim, Choong-Dong Lee
The traction motor used in electric vehicle and railway is required to the compact size and light weight because the space itself for traction motor of the vehicle is narrow or limited. Therefore the thermal stability of small motors should be considered as the most important design factor. The air or water is employed as coolants in cooling method. The thermal stability surely is verified by the fluid & the heat transfer analysis by CFD (computational fluid dynamics) and the thermal equivalent circuit method. The simulation results from two methods are compared to test data and validated.
{"title":"The Temperature Rise Characteristic Analysis Technique of the Traction Motor for EV Application","authors":"Wan-Gi Kim, Jong-In Lee, Keun-Woong Kim, Yoo-Sung Kim, Choong-Dong Lee","doi":"10.1109/IFOST.2006.312353","DOIUrl":"https://doi.org/10.1109/IFOST.2006.312353","url":null,"abstract":"The traction motor used in electric vehicle and railway is required to the compact size and light weight because the space itself for traction motor of the vehicle is narrow or limited. Therefore the thermal stability of small motors should be considered as the most important design factor. The air or water is employed as coolants in cooling method. The thermal stability surely is verified by the fluid & the heat transfer analysis by CFD (computational fluid dynamics) and the thermal equivalent circuit method. The simulation results from two methods are compared to test data and validated.","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":"126143960","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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