Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830655
J. Wilde, W. Staiger, M. Thoben
In this paper, a systematic approach is presented for the design and optimization of forced liquid cooled electronic modules with high power dissipation. The steps of the design cycle include hydrodynamical evaluation of the heat sink, thermal management, thermomechanical optimization and especially lifetime prediction of soldered joints. Utilized engineering tools comprise computational fluid dynamics, finite differences and finite element programs. These are coupled via software interfaces in order to enable data exchange as well as efficient cooperation of the designers. Applying these means, performance, reliability and costs of a certain module have been optimized. By use of a design-for-reliability procedure substantial savings with regard to development time, prototyping effort and consequently costs can been achieved.
{"title":"An integrated design approach for the hardware optimization of electrical power modules for automotive electrotraction","authors":"J. Wilde, W. Staiger, M. Thoben","doi":"10.1109/IVEC.1999.830655","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830655","url":null,"abstract":"In this paper, a systematic approach is presented for the design and optimization of forced liquid cooled electronic modules with high power dissipation. The steps of the design cycle include hydrodynamical evaluation of the heat sink, thermal management, thermomechanical optimization and especially lifetime prediction of soldered joints. Utilized engineering tools comprise computational fluid dynamics, finite differences and finite element programs. These are coupled via software interfaces in order to enable data exchange as well as efficient cooperation of the designers. Applying these means, performance, reliability and costs of a certain module have been optimized. By use of a design-for-reliability procedure substantial savings with regard to development time, prototyping effort and consequently costs can been achieved.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125852041","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830698
Z. Liyi, Li Qiang, Wang Huakui, X. Keming
This paper introduces the principle of the time-recording on automobile driver training, discusses an error tolerance plan of data storage countering some possible inferences of the system and analyses of the double-layered (16, 11, 4) minimal optimal odd-weight error-correcting code. From the analysis, one can conclude that this code has the merit of low redundancy and strong ability of anti-inference and detecting and correcting error.
{"title":"Research of error tolerance plan of data storage for time-recording on automobile driver training","authors":"Z. Liyi, Li Qiang, Wang Huakui, X. Keming","doi":"10.1109/IVEC.1999.830698","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830698","url":null,"abstract":"This paper introduces the principle of the time-recording on automobile driver training, discusses an error tolerance plan of data storage countering some possible inferences of the system and analyses of the double-layered (16, 11, 4) minimal optimal odd-weight error-correcting code. From the analysis, one can conclude that this code has the merit of low redundancy and strong ability of anti-inference and detecting and correcting error.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125408842","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830685
W. Chuanjiu, Y. Zhaosheng
ITS R&D Center, Jilin University of Technology is undertaking an ITS technology project, Theory and Method of Urban Traffic Flow Guidance Systems. The project aims to improve the safety and efficiency of automobile travel. As a part of it, we developed a Trip Guidance System (TGS) based on the rapidly expanding Internet network. The scheme consists of a pretrip planning system which enables travelers to make a plan available at any terminal that is connected to the Internet; and an in-vehicle navigation system which provides traffic information and en-route advisory services. This paper presents some of our initial findings. It begins with a discussion of the unique functions of the Internet, which are robust enough to meet the needs of route guidance systems. It also presents an overall system structure, and highlights the critical considerations when implementing such services, that is, when using Internet-based technology. Finally, it concludes with a discussion of potential problems areas for future research.
{"title":"Development of an Internet-based trip guidance system","authors":"W. Chuanjiu, Y. Zhaosheng","doi":"10.1109/IVEC.1999.830685","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830685","url":null,"abstract":"ITS R&D Center, Jilin University of Technology is undertaking an ITS technology project, Theory and Method of Urban Traffic Flow Guidance Systems. The project aims to improve the safety and efficiency of automobile travel. As a part of it, we developed a Trip Guidance System (TGS) based on the rapidly expanding Internet network. The scheme consists of a pretrip planning system which enables travelers to make a plan available at any terminal that is connected to the Internet; and an in-vehicle navigation system which provides traffic information and en-route advisory services. This paper presents some of our initial findings. It begins with a discussion of the unique functions of the Internet, which are robust enough to meet the needs of route guidance systems. It also presents an overall system structure, and highlights the critical considerations when implementing such services, that is, when using Internet-based technology. Finally, it concludes with a discussion of potential problems areas for future research.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129929987","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830617
Minggao Yang, Jianqiu Li, Xiaodong Lu
Misfire detection or cylinder by cylinder variations feedback using momentary crankshaft speed is practical for certain engine conditions such as idle speed. It is still a difficult problem at high speed and transient condition. Aiming at that remaining challenge, this paper presents a new tool wavelet transform to process the momentary crankshaft speed. The multi-scale (or multiresolution) analysis of the speed signal at different engine operating condition is presented. The speed fluctuations between normal combustion and misfire are compared. The results indicate that wavelet transform is a suitable tool to process the speed signal and it paves a new way to achieve misfire detection at high or transient speed condition.
{"title":"Multi-scale analysis for engine momentary crankshaft speed","authors":"Minggao Yang, Jianqiu Li, Xiaodong Lu","doi":"10.1109/IVEC.1999.830617","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830617","url":null,"abstract":"Misfire detection or cylinder by cylinder variations feedback using momentary crankshaft speed is practical for certain engine conditions such as idle speed. It is still a difficult problem at high speed and transient condition. Aiming at that remaining challenge, this paper presents a new tool wavelet transform to process the momentary crankshaft speed. The multi-scale (or multiresolution) analysis of the speed signal at different engine operating condition is presented. The speed fluctuations between normal combustion and misfire are compared. The results indicate that wavelet transform is a suitable tool to process the speed signal and it paves a new way to achieve misfire detection at high or transient speed condition.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130581084","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830695
Liu Ying, Zhongxia Li, Wang Xun
It was proposed that using high-order cumulants as signal processing means restrains the noise effects of a standard receiver. The paper analyses the errors of a differential Global Positioning System (DGPS) receiver such as receiver noise, deflective shift between channels about receivers, multi-distances error etc. The algorithm adopts cumulants slices means to make the result simple and accurate. High order cumulants may restrain the effects of Gaussian noise, so the signal to noise ratio (SNR) about the receiver was improved and the precision of the GPS receiver was enhanced for navigation and vehicle positioning.
{"title":"Research of signal processing method about vehicle positioning","authors":"Liu Ying, Zhongxia Li, Wang Xun","doi":"10.1109/IVEC.1999.830695","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830695","url":null,"abstract":"It was proposed that using high-order cumulants as signal processing means restrains the noise effects of a standard receiver. The paper analyses the errors of a differential Global Positioning System (DGPS) receiver such as receiver noise, deflective shift between channels about receivers, multi-distances error etc. The algorithm adopts cumulants slices means to make the result simple and accurate. High order cumulants may restrain the effects of Gaussian noise, so the signal to noise ratio (SNR) about the receiver was improved and the precision of the GPS receiver was enhanced for navigation and vehicle positioning.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124206570","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830622
D. Huan-yun, Hao Xiaofen, Zhang Hanquan
This paper presents a systematic approach for the robust performance design of active suspension system. The robust control of vehicle active suspension is studied deeply by using the modern robust control synthesis approach-/spl mu/ approach. With the digital controller designed, the hybrid computer simulation of the robust active suspension system is carried out and simulation results are given.
{"title":"The research on robust control design railway of vehicle active suspension","authors":"D. Huan-yun, Hao Xiaofen, Zhang Hanquan","doi":"10.1109/IVEC.1999.830622","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830622","url":null,"abstract":"This paper presents a systematic approach for the robust performance design of active suspension system. The robust control of vehicle active suspension is studied deeply by using the modern robust control synthesis approach-/spl mu/ approach. With the digital controller designed, the hybrid computer simulation of the robust active suspension system is carried out and simulation results are given.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121484209","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830681
W. Xuejun, Xu Yong, C. Hexin
In this paper, an adaptive neural network vector quantization algorithm is proposed first, then using this algorithm, an implementation based on TMS320C30 processor is developed in a color image coding system. The results show a better image quality by using this algorithm and that the color image coding system is effective.
{"title":"An adaptive neural network vector quantization algorithm and its implementation based on TMS320C30 in color image coding","authors":"W. Xuejun, Xu Yong, C. Hexin","doi":"10.1109/IVEC.1999.830681","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830681","url":null,"abstract":"In this paper, an adaptive neural network vector quantization algorithm is proposed first, then using this algorithm, an implementation based on TMS320C30 processor is developed in a color image coding system. The results show a better image quality by using this algorithm and that the color image coding system is effective.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"262 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113995882","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830649
S. Noda, K. Inomata, M. Watanabe, T. Fukae, M. Tobioka
A millimeter-wave radar using a spread spectrum technique for train applications has been developed in the 60 GHz band. This radar measures the distance, velocity, azimuth angle, and the magnitude of received signal of each target. The methods for detection are described in this paper. In the experiment, the radar detected the linear shape of trains.
{"title":"A millimeter-wave radar for train application","authors":"S. Noda, K. Inomata, M. Watanabe, T. Fukae, M. Tobioka","doi":"10.1109/IVEC.1999.830649","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830649","url":null,"abstract":"A millimeter-wave radar using a spread spectrum technique for train applications has been developed in the 60 GHz band. This radar measures the distance, velocity, azimuth angle, and the magnitude of received signal of each target. The methods for detection are described in this paper. In the experiment, the radar detected the linear shape of trains.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124059593","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830663
Qin Gui-he, Lei Yulong, Niu Ming-kui, Ge Anlin, Dai Yi-song
This paper describes the significance and feasibility of a method based on pattern recognition and an application example of the estimation of road situations and driver's operating intentions (RSDOI). The information of RSDOI is not same in form as the state parameters. According to the specialty of RSODI, a fuzzy pattern recognition method is raised to estimate the information. Some relations between the driver, road, automobile and the electronic control systems of the automobile are illustrated.
{"title":"Estimation of road situations and driver's intention in automotive electronic control system","authors":"Qin Gui-he, Lei Yulong, Niu Ming-kui, Ge Anlin, Dai Yi-song","doi":"10.1109/IVEC.1999.830663","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830663","url":null,"abstract":"This paper describes the significance and feasibility of a method based on pattern recognition and an application example of the estimation of road situations and driver's operating intentions (RSDOI). The information of RSDOI is not same in form as the state parameters. According to the specialty of RSODI, a fuzzy pattern recognition method is raised to estimate the information. Some relations between the driver, road, automobile and the electronic control systems of the automobile are illustrated.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128154961","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 : 1999-09-06DOI: 10.1109/IVEC.1999.830642
Zhong-chang Liu, Xunjun Liu, Zhaohe Zhang
An air injection variable swirl inlet system (AIVSIS) by means of injecting air into helical intake passage for a diesel engine was developed. Steady flow rig test results showed that AIVSIS is able to increase or decrease the swirl strength in the cylinder at suitable injector position by different air injection directions. Position and air injection directions of injector, as well as nozzle hole diameter and air injection pressure were determined. Diesel engine test results showed that AIVSIS hardly affects volumetric efficiency in the cylinder. At lighter load operating conditions of 1500 rpm, the performance and the trade-off between NO/sub x/ and particulate emission (PT), brake specific fuel consumption (BSFC) are all improved using AIVSIS to reduce swirl strength without obvious increase of CO emission, but THC emission increases a little. At heavier load operating conditions, the performance and PT, THC and CO emissions are all improved using AIVSIS to increase swirl level, but at the same time, NO/sub x/ emission increases a little.
{"title":"Reducing exhaust emissions from an automotive DI diesel engine by means of air injection variable swirl inlet system","authors":"Zhong-chang Liu, Xunjun Liu, Zhaohe Zhang","doi":"10.1109/IVEC.1999.830642","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830642","url":null,"abstract":"An air injection variable swirl inlet system (AIVSIS) by means of injecting air into helical intake passage for a diesel engine was developed. Steady flow rig test results showed that AIVSIS is able to increase or decrease the swirl strength in the cylinder at suitable injector position by different air injection directions. Position and air injection directions of injector, as well as nozzle hole diameter and air injection pressure were determined. Diesel engine test results showed that AIVSIS hardly affects volumetric efficiency in the cylinder. At lighter load operating conditions of 1500 rpm, the performance and the trade-off between NO/sub x/ and particulate emission (PT), brake specific fuel consumption (BSFC) are all improved using AIVSIS to reduce swirl strength without obvious increase of CO emission, but THC emission increases a little. At heavier load operating conditions, the performance and PT, THC and CO emissions are all improved using AIVSIS to increase swirl level, but at the same time, NO/sub x/ emission increases a little.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130785773","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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