{"title":"A novel power generation system for ground vehicles","authors":"M. Naidu, N. Boules, R. Henry","doi":"10.1109/DASC.1999.863659","DOIUrl":"https://doi.org/10.1109/DASC.1999.863659","url":null,"abstract":"The paper presents a new generation scheme that is capable of efficient high electric power as needed for future automobiles. The new system consists of a permanent magnet (PM) alternator, a split winding and a novel electronic voltage regulator. A proof of concept system, capable of providing 100/250 A (idle/cruising) at 14 V, has been built and tested. The results show that this high output is provided at 15-20 percentage points higher efficiencies than conventional automotive alternators, which translates into considerable fuel economy savings. The alternator is also 8 dB quieter and has a rotor inertia of only 2/3 that of an equivalent production alternator, thus avoiding belt slippage. Analysis show that a 48 V system would be even more efficient with up to 5-percentile points improvement and could use power devices with reduced current rating, size and cost.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"437 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122883545","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}
{"title":"Description of terrain mesh generation and reduction for avionics display and processing applications","authors":"S. Zellers","doi":"10.1109/DASC.1999.813687","DOIUrl":"https://doi.org/10.1109/DASC.1999.813687","url":null,"abstract":"","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121389362","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}
{"title":"A product line approach to weapon systems acquisition","authors":"J. Dixon, J. Hanratty, C. Banning","doi":"10.1109/DASC.1999.863663","DOIUrl":"https://doi.org/10.1109/DASC.1999.863663","url":null,"abstract":"This paper focuses on the product line approach to weapon systems acquisition and its key features. We emphasize open systems and architectures and the development environment to support the approach. We discuss examples where this approach has produced outstanding results, and we summarize findings that should encourage senior executives and program managers to embrace the concept.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128487783","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}
{"title":"Intelligent efficiency mapping of a hybrid electric vehicle starter/alternator using fuzzy logic","authors":"R. Sepe, J. Miller, A. R. Gale","doi":"10.1109/DASC.1999.822007","DOIUrl":"https://doi.org/10.1109/DASC.1999.822007","url":null,"abstract":"This paper characterizes the optimum efficiency operating points of an 8 kW hybrid electric vehicle (HEV) starter/alternator, using a fuzzy logic controller for robust, automatic mapping. Hardware-in-the-simulation-loop techniques are presented to tune the fuzzy controller, and an algorithm to predict optimum starter/alternator operating points is developed. Experimental results show the effectiveness of the fuzzy controller, validate model predictions, and indicate the importance of saturation and temperature in assessing starter/alternator efficiency. Vehicular deployment of such a system could be used to maintain maximum starter/alternator efficiency in the HEV.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128491353","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}
{"title":"Measured emissions from regulated and unregulated passenger and crew devices","authors":"G. Fuller, C. Satterlee","doi":"10.1109/DASC.1999.822094","DOIUrl":"https://doi.org/10.1109/DASC.1999.822094","url":null,"abstract":"Most articles on electronic device emissions are written from the viewpoint of the manufacturer trying to comply with one or more of the various EMI regulations that must be satisfied in-order to offer that device for sale into it's intended markets. The manufacturer's interest is not in understanding the impact his device may or not have in the environment, but in passing a laboratory test specified by the regulating agency. This paper takes the view of the airlines which are connected with the potential that the emissions from the passenger, crew, and airport portable electronic devices may have on the aircraft's avionics that may impact safety or incur additional cost to the airlines. The author had the opportunity to measure PED emissions in an airport environment during the last two years and to ask what these measurements might mean to the airlines. This paper first presents results of emissions measured in the aircraft operational environment. Then the interpretation of the measured results into potential avionics upset levels follows, which would lead to a discussion of how these levels might relate to those measured in the laboratory. The appropriateness of existing emission standards and test procedures will be discussed.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116925466","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}
{"title":"Plastic lithium ion energy/power systems are key to integrated and affordable hybrid automotive solutions","authors":"D. Ahrens, B.T. Hanauer, J. E. Waters","doi":"10.1109/DASC.1999.863654","DOIUrl":"https://doi.org/10.1109/DASC.1999.863654","url":null,"abstract":"If Hybrid Electric Vehicles are going to be successful, practical energy/power solutions must be implemented. One major cost driver on any hybrid application is the energy storage system, and the greater the power or energy storage requirements, the greater the cost. In addition, the energy storage system can be a major integration challenge as it often consumes highly valued vehicle space. The packaging, maintenance, safety and mass issues of the energy storage system must also be considered, as they all impact vehicle integration requirements. With the advent of Plastic Lithium Ion (PLI) technology, energy storage systems can be minimized, thus reducing the impact of cost, mass and volume to the hybrid vehicle platform. In addition, PLI technology provides packaging flexibility for optimum vehicle integration. By leveraging creativity, plastics engineering, and systems integration, PLI technology holds the key to practical and affordable Hybrid Electric Vehicles.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115262929","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}
{"title":"Object-oriented technology (OOT) in civil aviation projects: certification concerns","authors":"L.K. Rierson","doi":"10.1109/DASC.1999.863700","DOIUrl":"https://doi.org/10.1109/DASC.1999.863700","url":null,"abstract":"Object-Oriented Technology (OOT) has been extensively utilized throughout the non-safety rated software development community (e.g., Windows 98 and Internet software). Although the adoption of OOT has been limited in the airborne civil aviation community, OOT is being considered by an increasing number of manufacturers of airborne software. Application of RTCA DO-178B/EUROCAE ED-12B (\"Software Considerations in Airborne systems and Equipment Certification\") is the primary means of approving software within these airborne systems. However, DO-178B/ED-12B was developed prior to the widespread use of OOT. The application of DO178B/ED-12B to systems developed using OOT is not well understand in the industry. This paper will provide an introduction to the issues surrounding the development of aviation software using OOT within the context of DO-178B/ED-12B assessments. This introduction will demonstrate that DO-178B/ED-12B is compatible with OOT but that there are significant issues that need to be addressed. Other papers will be developed to address these issues in more depth.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115753702","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}
{"title":"Graybox software testing methodology: embedded software testing technique","authors":"A. Coulter","doi":"10.1109/DASC.1999.822089","DOIUrl":"https://doi.org/10.1109/DASC.1999.822089","url":null,"abstract":"The Graybox Methodology is a full software life-cycle testing methodology used to functionally verify Ada, 'C', FORTRAN and assembly language software developed for embedded applications. The Graybox methodology reduces the cost and the time of software development by automatically creating all test unique software. It has been estimated that one line of unique test code is developed for every ten lines of application code (a 10% reduction in SW test time). Previous studies have shown that what used to take two days now takes less than four hours to thoroughly test a unit of software (a 75% reduction in test time). Since the cost of maintaining and upgrading this test-use only code is high, it is simply discarded after testing thereby receiving the name \"throw-away\" code.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116082435","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}
{"title":"Procedural oceanic air traffic control via electronic displays","authors":"B. Wise","doi":"10.1109/DASC.1999.863741","DOIUrl":"https://doi.org/10.1109/DASC.1999.863741","url":null,"abstract":"Since radar or other means of active position monitoring are not available over the large expanses of the ocean, oceanic air traffic control (ATC) operations are based on procedural separation techniques. Oceanic separation techniques are derived from the techniques developed for domestic separation prior to the advent of radar. They are heavily dependent upon the use of paper flight strips to monitor flight progress, determine separation, identify potential conflicts, and plan future clearances. The strips are initially printed by the oceanic display and planning system (ODAPS) which provides flight data processing, data communications, and a situation display for the controller. The controller, however, must manually maintain both the flight data on the paper flight strips and the information contained in ODAPS database. These manually intensive tasks consume much of the controller's available time during heavy traffic situations, and introduce the possibility of error due to entry mistakes and increase the potential for inconsistent data. To reduce or remove the requirements for paper flight strips, and the manual markings of these strips by the controller, a system must provide functionality that will replace or supplement the processes presently supported by the flight strips. This paper identifies graphical displays and controller tools that would reduce or eliminate the need for paper flight strips to monitor the progress of an aircraft with its filed flight plan in a procedural separation from the glass environment.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127147458","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}
{"title":"An automated method to detect potential mode confusions","authors":"John Rushby, Judith Crow, Everett Palmer","doi":"10.1109/DASC.1999.863725","DOIUrl":"https://doi.org/10.1109/DASC.1999.863725","url":null,"abstract":"Mode confusions are a type of \"automation surprise\"-circumstances where an automated system behaves differently than its operator expects. It is generally accepted that operators develop \"mental models\" for the behavior of automated systems and use these to guide their interaction with the systems concerned, so that an automation surprise results when the actual system behavior diverges from its operator's mental model. Complex systems are often structured into \"modes\" (for example, an autopilot might have different modes for altitude capture, altitude hold, and so on), and their behavior can change significantly across different modes. \"Mode confusion\" arises when the system is in a different mode than that assumed by its operator; this is a rich source of automation surprises, since the operator may interact with the system according to a mental model that is inappropriate for its actual mode. Mode confusions have been implicated in several recent crashes and other incidents, and are a growing source of concern in modern automated cockpits. If we accept that mode confusions are due to a mismatch between the actual behavior of a system and the mental model of its operator, then one way to look for potential mode confusions is to compare the design of the actual system against a mental model. There are two challenges here: how to get hold of a mental model, and how to do the comparison. Through observation, questionnaires, and other techniques, psychologists have been able to elicit the mental models of individual operators (typically pilots). However, comparison between a design and the mental model of a specific individual will provide only very specific information; we are interested in whether a design is prone to mode confusions, and for this purpose it is more useful to compare the design against a generic mental model rather than that of an individual.","PeriodicalId":269139,"journal":{"name":"Gateway to the New Millennium. 18th Digital Avionics Systems Conference. Proceedings (Cat. No.99CH37033)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127403419","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}