Pub Date : 1994-03-22DOI: 10.1109/RRCON.1994.289019
W. Oghanna, B. Stephens
In 1991, an agreement was signed between the University of Central Queensland and Queensland Rail for joint development research and technology transfer on a three phase asynchronous motor drive suitable for electric traction vehicle (AC Traction Drive Project). The aim of this project is to develop a program of continuing education based on the design, simulation, analysis and prototype construction of converter/inverter and drive control for a three phase induction motor for traction systems. This research work is carried out by the staff of the Drives, Power Electronics and Traction Systems Laboratory. Some of the results so far are highlighted.<>
{"title":"Joint development research and technology transfer for AC traction drives","authors":"W. Oghanna, B. Stephens","doi":"10.1109/RRCON.1994.289019","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289019","url":null,"abstract":"In 1991, an agreement was signed between the University of Central Queensland and Queensland Rail for joint development research and technology transfer on a three phase asynchronous motor drive suitable for electric traction vehicle (AC Traction Drive Project). The aim of this project is to develop a program of continuing education based on the design, simulation, analysis and prototype construction of converter/inverter and drive control for a three phase induction motor for traction systems. This research work is carried out by the staff of the Drives, Power Electronics and Traction Systems Laboratory. Some of the results so far are highlighted.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114978372","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289014
D.L. Cackovic, R.L. Bollock
An investigation into a possible alternative test procedure for the Association of American Railroads' (AAR) Specification M-965-91, sponsored by the Standard Car Truck Company, was performed on the Vibration Test Unit (VTU) in the Rail Dynamics Laboratory at the Transportation Test Center (TTC), Pueblo, Colorado. The results show that the VTU was able to excite responses of the test car which, when compared to on-track test data, showed similarities in characteristics (i.e. critical speed was clearly evident in both cases) but not in regards to absolute values of response amplitudes and critical speeds. The referenced specification, "Special Devices to Control Stability of Freight Cars," originally involved the testing of trucks for roll stability on a car rocker located at Norfolk Southern's research and test facility in Alexandria, Virginia. When that rocker was no longer available, the specification was amended to allow certification to be achieved through tests over a track which contains 0.75-inch cross level variations designed to determine roll behavior. The modified certification procedure required the test car to traverse the twist-and-roll track section at constant speed, increasing in 1 mph increments from 12 mph to 25 mph. Criteria for the revised certification procedure required lateral to vertical wheel force ratios (L/V) to be less than 1.4, roll angles to be less than 6 degrees peak-to-peak, and minimum vertical wheel loads not to be less than 25 percent of static value through the wheels and axles.<>
{"title":"Proposed alternative test procedure for AAR specification M-965-91 with the vibration test unit","authors":"D.L. Cackovic, R.L. Bollock","doi":"10.1109/RRCON.1994.289014","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289014","url":null,"abstract":"An investigation into a possible alternative test procedure for the Association of American Railroads' (AAR) Specification M-965-91, sponsored by the Standard Car Truck Company, was performed on the Vibration Test Unit (VTU) in the Rail Dynamics Laboratory at the Transportation Test Center (TTC), Pueblo, Colorado. The results show that the VTU was able to excite responses of the test car which, when compared to on-track test data, showed similarities in characteristics (i.e. critical speed was clearly evident in both cases) but not in regards to absolute values of response amplitudes and critical speeds. The referenced specification, \"Special Devices to Control Stability of Freight Cars,\" originally involved the testing of trucks for roll stability on a car rocker located at Norfolk Southern's research and test facility in Alexandria, Virginia. When that rocker was no longer available, the specification was amended to allow certification to be achieved through tests over a track which contains 0.75-inch cross level variations designed to determine roll behavior. The modified certification procedure required the test car to traverse the twist-and-roll track section at constant speed, increasing in 1 mph increments from 12 mph to 25 mph. Criteria for the revised certification procedure required lateral to vertical wheel force ratios (L/V) to be less than 1.4, roll angles to be less than 6 degrees peak-to-peak, and minimum vertical wheel loads not to be less than 25 percent of static value through the wheels and axles.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127526452","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289023
Nick R Sparozic
The automated train dispatching system (ATDS) is a computerized fault tolerant train schedule tracking and status information system. It consists of thirty-eight DEC PC workstations interconnected by modems, thick and thin wire Ethernet and fiber optic cable to a central VAXft computer acting as a database server. Three DECserver 700s provide forty-eight ports to drive nine end of line printers and three hundred "Transit Information Display Sign" (TIDS) Displays. The ATDS will be used by dispatchers and tower operators to monitor and administer the movement of trains in their territory by providing an accurate, real time status of train location. The inner workings of the traditional paper intensive system used to "run the railroad" are examined. The problems common to this system are identified and their impact assessed. The functionality of the new system is described. The streamlined operations under the electronic system are explained together with a discussion of the problems encountered when implementing the new design. The impacts on not only railroad operations but other departments with respect to the introduction of new technology, new technology/work interface and organization structure are explored. Integration of the design into the overall modernization plans are explored and finally, the lessons learned in implementation of this project are listed.<>
{"title":"An automated train dispatching system","authors":"Nick R Sparozic","doi":"10.1109/RRCON.1994.289023","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289023","url":null,"abstract":"The automated train dispatching system (ATDS) is a computerized fault tolerant train schedule tracking and status information system. It consists of thirty-eight DEC PC workstations interconnected by modems, thick and thin wire Ethernet and fiber optic cable to a central VAXft computer acting as a database server. Three DECserver 700s provide forty-eight ports to drive nine end of line printers and three hundred \"Transit Information Display Sign\" (TIDS) Displays. The ATDS will be used by dispatchers and tower operators to monitor and administer the movement of trains in their territory by providing an accurate, real time status of train location. The inner workings of the traditional paper intensive system used to \"run the railroad\" are examined. The problems common to this system are identified and their impact assessed. The functionality of the new system is described. The streamlined operations under the electronic system are explained together with a discussion of the problems encountered when implementing the new design. The impacts on not only railroad operations but other departments with respect to the introduction of new technology, new technology/work interface and organization structure are explored. Integration of the design into the overall modernization plans are explored and finally, the lessons learned in implementation of this project are listed.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131813703","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289032
S. Kiriczi, E. Schnieder
Traditional train control has been discrete speed and position control via fixed block quantization. The principle of continuous train control especially its high performance version, moving block, is being used more for high speed trains or for urban transit, introducing the problem of obtaining vital continuous measurements of position and speed. Omitting position discrete measuring devices (except for synchronization), there is the problem of how to obtain a safety related interval of confidence, the true value of the measured quantity is guaranteed to stay within according to the safety standard. It has been shown that use of consistent data is an integral aspect to achieve this objective. Therefore FDI algorithms have to be applied to the measurement data. There are several requirements on the FDI algorithms, if used in vital systems. These requirements are formulated and it is examined how FDI algorithms fulfil these requirements. Considering the aspect of safety issues the authors further propose a classification scheme for these algorithms focussing especially on analytical redundancy. The goal of this scheme is firstly to allow an orientation in the 'jungle of FDI' and secondly to provide the possibility to project results for one algorithm of a class to an other algorithm of that particular class. The classification scheme as well as the examinations of the algorithms' ability to meet the safety requirements are explained by applying examples to measurement data obtained from a complex train simulator.<>
{"title":"Possibilities of failure detection and identification (FDI) in a train localization system","authors":"S. Kiriczi, E. Schnieder","doi":"10.1109/RRCON.1994.289032","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289032","url":null,"abstract":"Traditional train control has been discrete speed and position control via fixed block quantization. The principle of continuous train control especially its high performance version, moving block, is being used more for high speed trains or for urban transit, introducing the problem of obtaining vital continuous measurements of position and speed. Omitting position discrete measuring devices (except for synchronization), there is the problem of how to obtain a safety related interval of confidence, the true value of the measured quantity is guaranteed to stay within according to the safety standard. It has been shown that use of consistent data is an integral aspect to achieve this objective. Therefore FDI algorithms have to be applied to the measurement data. There are several requirements on the FDI algorithms, if used in vital systems. These requirements are formulated and it is examined how FDI algorithms fulfil these requirements. Considering the aspect of safety issues the authors further propose a classification scheme for these algorithms focussing especially on analytical redundancy. The goal of this scheme is firstly to allow an orientation in the 'jungle of FDI' and secondly to provide the possibility to project results for one algorithm of a class to an other algorithm of that particular class. The classification scheme as well as the examinations of the algorithms' ability to meet the safety requirements are explained by applying examples to measurement data obtained from a complex train simulator.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128205512","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289025
Fred M. Perilstein
The explosive growth of microprocessor use in all varieties of control equipment has led to exceptional versatility for typical system supervision. More functions in less space, combined with distributed decision control logic, has resulted in increased opportunities and responsibilities for system operators. This is valid for both equipment procurement (software, firmware and hardware) and day-to-day utilization. The author discusses the applicability of these microprocessor-based control systems to rail transportation systems. An example of distributed remote control (a motor starter) is discussed as are data acquisition and security considerations.<>
{"title":"The future impact of the microprocessor on total transport system control functions","authors":"Fred M. Perilstein","doi":"10.1109/RRCON.1994.289025","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289025","url":null,"abstract":"The explosive growth of microprocessor use in all varieties of control equipment has led to exceptional versatility for typical system supervision. More functions in less space, combined with distributed decision control logic, has resulted in increased opportunities and responsibilities for system operators. This is valid for both equipment procurement (software, firmware and hardware) and day-to-day utilization. The author discusses the applicability of these microprocessor-based control systems to rail transportation systems. An example of distributed remote control (a motor starter) is discussed as are data acquisition and security considerations.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132178807","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289010
F. Needels, A. Hoveskeland
Chicago is planning to build a Light Rail Vehicle (LRV) System known as the Central Area Circulator. The eight-mile line will operate in mixed street traffic in the dense downtown area crowded with pedestrians, automobiles, and buses. To bring the CAC to reality their conflicting requirements must be satisfied. The Circulator Design Team turned to "Smart" Technology to control both the Light Rail Vehicles and the intersections. Two-way communications between LRVs and the intersection controllers will also be utilized to minimize routine delays to the LRVs. The implementation of these control technologies will optimize the utilization of each transportation mode.<>
{"title":"Chicago circulator turns to \"Smart\" Technology","authors":"F. Needels, A. Hoveskeland","doi":"10.1109/RRCON.1994.289010","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289010","url":null,"abstract":"Chicago is planning to build a Light Rail Vehicle (LRV) System known as the Central Area Circulator. The eight-mile line will operate in mixed street traffic in the dense downtown area crowded with pedestrians, automobiles, and buses. To bring the CAC to reality their conflicting requirements must be satisfied. The Circulator Design Team turned to \"Smart\" Technology to control both the Light Rail Vehicles and the intersections. Two-way communications between LRVs and the intersection controllers will also be utilized to minimize routine delays to the LRVs. The implementation of these control technologies will optimize the utilization of each transportation mode.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130968682","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289022
S. Mace, D. DiBrito, R. W. Blank, L. S. Keegan, M.G. Allran
The Association of American Railroads (AAR) and Norfolk Southern (NS) participated in a joint research project which implicated poor wheel set steering as the cause of a gage widening derailment in a 6 degree curve on the NS in June, 1993. Through track tests and analytical modeling, the research project successfully demonstrated that poor wheel set steering can initiate truck warp and lead to the production of large gage widening forces. Furthermore, the project demonstrated that poor wheel set steering results from a combination of the following factors: (1) two-point wheel/rail contact caused by excessive gage corner relief grinding of the high (outer) rail, (2) wheels with treads worn to a hollow shape, and (3) high rail gage face lubrication.<>
{"title":"Effect of wheel and rail profiles on gage widening behavior","authors":"S. Mace, D. DiBrito, R. W. Blank, L. S. Keegan, M.G. Allran","doi":"10.1109/RRCON.1994.289022","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289022","url":null,"abstract":"The Association of American Railroads (AAR) and Norfolk Southern (NS) participated in a joint research project which implicated poor wheel set steering as the cause of a gage widening derailment in a 6 degree curve on the NS in June, 1993. Through track tests and analytical modeling, the research project successfully demonstrated that poor wheel set steering can initiate truck warp and lead to the production of large gage widening forces. Furthermore, the project demonstrated that poor wheel set steering results from a combination of the following factors: (1) two-point wheel/rail contact caused by excessive gage corner relief grinding of the high (outer) rail, (2) wheels with treads worn to a hollow shape, and (3) high rail gage face lubrication.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114267998","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289011
J. Hogan, D. Rey, S. Faas
An application of smart sensor technology developed by Sandia National Laboratories for use in the safe and secure transportation of high value or hazardous materials is proposed for a railroad application. The Green Box would be capable of surviving most typical railroad accidents. In an accident, the system would send a distress signal notifying authorities of the location and condition of the cargo; permitting them to respond in the most effective manner. The concept proposes a strap-on sensor package. the Green Box, that could be attached to any railroad car or cargo container. Its primary purpose is to minimize the number, severity and consequences of accidents and to reduce losses due to theft. The system would also be capable of recognizing component failure conditions, notifying the operators and logging sensor data for use in directing preventative maintenance. The modular implementation, which facilitates system integration in a number of applications including the Advanced Train Control System (ACTS), is discussed. The methodology for determining the environmental specification for accident survivability is presented. A test plan for evaluating hardware performance in both normal operating and accident conditions is described.<>
{"title":"Design of a smart, survivable sensor system for enhancing the safe and secure transportation of hazardous or high-value cargo on railroads","authors":"J. Hogan, D. Rey, S. Faas","doi":"10.1109/RRCON.1994.289011","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289011","url":null,"abstract":"An application of smart sensor technology developed by Sandia National Laboratories for use in the safe and secure transportation of high value or hazardous materials is proposed for a railroad application. The Green Box would be capable of surviving most typical railroad accidents. In an accident, the system would send a distress signal notifying authorities of the location and condition of the cargo; permitting them to respond in the most effective manner. The concept proposes a strap-on sensor package. the Green Box, that could be attached to any railroad car or cargo container. Its primary purpose is to minimize the number, severity and consequences of accidents and to reduce losses due to theft. The system would also be capable of recognizing component failure conditions, notifying the operators and logging sensor data for use in directing preventative maintenance. The modular implementation, which facilitates system integration in a number of applications including the Advanced Train Control System (ACTS), is discussed. The methodology for determining the environmental specification for accident survivability is presented. A test plan for evaluating hardware performance in both normal operating and accident conditions is described.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122984317","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289018
G. Morgan
The Dallas Area Rapid Transit (DART) Authority is in the middle of construction of their Light Rail Starter System. Scheduled opening of the system for revenue service is June 1996. Civil construction and system procurement are progressing on schedule. The first Light Rail Vehicles are scheduled for delivery to begin testing in March 1995. The following aspects of the vehicles are briefly discussed: carbody, couplers, cab, doors, air comfort system, lighting, pantograph, auxiliary power, LV control power, propulsion system, traction motors, pneumatic system, friction brakes, and communication system.<>
{"title":"Dallas Area Rapid Transit light rail vehicle/spl minus/ modern equipment with a modern appearance","authors":"G. Morgan","doi":"10.1109/RRCON.1994.289018","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289018","url":null,"abstract":"The Dallas Area Rapid Transit (DART) Authority is in the middle of construction of their Light Rail Starter System. Scheduled opening of the system for revenue service is June 1996. Civil construction and system procurement are progressing on schedule. The first Light Rail Vehicles are scheduled for delivery to begin testing in March 1995. The following aspects of the vehicles are briefly discussed: carbody, couplers, cab, doors, air comfort system, lighting, pantograph, auxiliary power, LV control power, propulsion system, traction motors, pneumatic system, friction brakes, and communication system.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122904769","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 : 1994-03-22DOI: 10.1109/RRCON.1994.289012
S. Singh, F. Irani, S. Punwani
An ever-increasing emphasis on providing quality transportation service and meeting the customer expectations requires that a systems approach to the design of the freight truck be adopted. To meet these increasing requirements for better service, the car body and truck need to be treated as a single system and the freight truck has to be designed as an integral part of this system. Further, the freight car/truck design has to be pursued for dynamic performance level required to provide the ride quality demanded for safe transportation of a given commodity. The ride quality requirements should include vertical, lateral, and longitudinal ride quality levels. As an example, the automobile manufacturers expect that the railroad industry provide a completely damage-free environment for the transportation of automobiles. This paper discusses the current practice of freight truck design for conventional autorack cars and describes the ride quality provided by today's autorack cars. The paper proposes ride quality targets for future alternative systems for transporting automobiles. This target can be used also for current conventional autorack cars. The alternative systems, besides addressing ride quality, would address other associated requirements such as in-transit security, ease of loading/unloading, reduced transit time, reduced handling etc. All the necessary requirements for a Truck Specification are outlined including truck inspection, maintenance, repair, life cycle costs, etc. Specific quantitative requirements for these performance parameters must be set relative to the performance of today's equipment.<>
{"title":"Truck suspension specification for automobile transport","authors":"S. Singh, F. Irani, S. Punwani","doi":"10.1109/RRCON.1994.289012","DOIUrl":"https://doi.org/10.1109/RRCON.1994.289012","url":null,"abstract":"An ever-increasing emphasis on providing quality transportation service and meeting the customer expectations requires that a systems approach to the design of the freight truck be adopted. To meet these increasing requirements for better service, the car body and truck need to be treated as a single system and the freight truck has to be designed as an integral part of this system. Further, the freight car/truck design has to be pursued for dynamic performance level required to provide the ride quality demanded for safe transportation of a given commodity. The ride quality requirements should include vertical, lateral, and longitudinal ride quality levels. As an example, the automobile manufacturers expect that the railroad industry provide a completely damage-free environment for the transportation of automobiles. This paper discusses the current practice of freight truck design for conventional autorack cars and describes the ride quality provided by today's autorack cars. The paper proposes ride quality targets for future alternative systems for transporting automobiles. This target can be used also for current conventional autorack cars. The alternative systems, besides addressing ride quality, would address other associated requirements such as in-transit security, ease of loading/unloading, reduced transit time, reduced handling etc. All the necessary requirements for a Truck Specification are outlined including truck inspection, maintenance, repair, life cycle costs, etc. Specific quantitative requirements for these performance parameters must be set relative to the performance of today's equipment.<<ETX>>","PeriodicalId":145407,"journal":{"name":"Proceedings of IEEE/ASME Joint Railroad Conference","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126784572","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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