Complex engineering systems (Alhambra, Calif.)最新文献_第6页

Why Mechanical Subsystems Are Difficult to Integrate 为什么机械子系统难以集成

Complex engineering systems (Alhambra, Calif.) Pub Date : 1996-11-17 DOI: 10.1115/imece1996-0872

D. Segalman, K. Ortiz, J. Wesner

引用次数: 0

Balancing Management and Technical Considerations for Environmentally Responsible Engineering 平衡管理和技术考虑对环境负责的工程

Complex engineering systems (Alhambra, Calif.) Pub Date : 1996-11-17 DOI: 10.1115/imece1996-0875

E. Kistler

引用次数: 0

Extremely Large Scale Broadcast Facilities 超大规模的广播设施

Complex engineering systems (Alhambra, Calif.) Pub Date : 1996-11-17 DOI: 10.1115/imece1996-0881

J. T. Karam

{"title":"Extremely Large Scale Broadcast Facilities","authors":"J. T. Karam","doi":"10.1115/imece1996-0881","DOIUrl":"https://doi.org/10.1115/imece1996-0881","url":null,"abstract":"\u0000 The advent of Direct Broadcast Satellites requires the associated development of origination facilities supporting hundreds of viewer channels. Such facilities use highly automated, fault tolerant control systems to facilitate cost-effective staffing levels and the flexibility to support services that are only now evolving.\u0000 We summarize the capabilities and architecture of two such facilities that are among the largest in the world: the more than 175 channel DIRECTV® Castle Rock Broadcast Center (CRBC) servicing the continental United States from Colorado, and the 72 channel DIRECTV International Inc. California Broadcast Center in Long Beach servicing Latin America and the Caribbean. For program transmission, these services use the latest, high-powered Hughes Kuband communication satellites. For program playback, each plant uses relatively conventional digital tape-based technology. Two factors make the program playout operations unique. First, their extreme size and scope. Second, all the resources in the plant are sharable and schedulable among different viewer channels to assure the plant can adapt to the services demanded by their evolving market. Some “lessons learned” are then discussed as suggestions to aid future product and facility developments.","PeriodicalId":72652,"journal":{"name":"Complex engineering systems (Alhambra, Calif.)","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1996-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85648390","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}

引用次数: 0

The Role of Synthesis, Analysis, and Simulation in Engineering a Complex System: The Automotive Vehicle 综合、分析与仿真在复杂系统工程中的作用:汽车

Complex engineering systems (Alhambra, Calif.) Pub Date : 1996-11-17 DOI: 10.1115/imece1996-0882

David Chang, S. Rohde

{"title":"The Role of Synthesis, Analysis, and Simulation in Engineering a Complex System: The Automotive Vehicle","authors":"David Chang, S. Rohde","doi":"10.1115/imece1996-0882","DOIUrl":"https://doi.org/10.1115/imece1996-0882","url":null,"abstract":"\u0000 In this paper we define a “top down” systems engineering process that is driven by customer requirements, and which results in vehicle products that meet those requirements. This process is intended to effectively deal with the complexity of modern automotive systems. To implement the systems engineering paradigm, an approach that integrates functional product requirements with physical realizations, i.e., math-based synthesis is introduced. Synthesis and analysis are shown to be key to being able to define, design, and validate vehicles, vehicle subsystems and components, and processes to meet their physical and functional requirements simultaneously. This involves the utilization of mathematical models at a variety of levels of detail, and of multi-disciplinary computer based methods, e.g., computer-aided engineering (CAE). Examples of the application and benefits of the use of synthesis and analysis are shown throughout the automotive vehicle development process. The approach presented leads to shorter product development cycles at reduced cost, less prototype hardware builds, and superior quality and value for the customer.","PeriodicalId":72652,"journal":{"name":"Complex engineering systems (Alhambra, Calif.)","volume":"47 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1996-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79504966","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}

引用次数: 0

Engineering Systems: An Industry and Product View Point 工程系统:工业和产品的观点

Complex engineering systems (Alhambra, Calif.) Pub Date : 1996-11-17 DOI: 10.1115/imece1996-0883

K. Tran

引用次数: 0

Design and Fabrication of the Fundamental Components Integrated to Realize a Functional Silicon Micromachined Gas Chromatography System 集成实现功能硅微机气相色谱系统的基本元件的设计与制造

Complex engineering systems (Alhambra, Calif.) Pub Date : 1996-11-17 DOI: 10.1115/imece1996-0869

E. Kolesar, R. Reston

{"title":"Design and Fabrication of the Fundamental Components Integrated to Realize a Functional Silicon Micromachined Gas Chromatography System","authors":"E. Kolesar, R. Reston","doi":"10.1115/imece1996-0869","DOIUrl":"https://doi.org/10.1115/imece1996-0869","url":null,"abstract":"\u0000 A miniature gas chromatography (GC) system has been designed, fabricated and developed using modem silicon micromachining and VLSI circuit processing techniques. The GC system is composed of a miniature sample injector that incorporates a 10 μ1 sample loop; a 0.9 m long, rectangular-shaped (300 μm width and 10 μm height) capillary column coated with a 0.2 μm thick copper phthalocyanine (CuPc) stationary phase; and a dual-detector scheme based upon a CuPc-coated chemiresistor and a commercially available, 125-μm diameter thermal conductivity detector (TCD) bead. Silicon micromachining was employed to fabricate the interface between the sample injector and the GC system’s column, the GC system’s column itself, and the dual-detector cavity. A novel integrated circuit thin film processing technique was developed to sublime the CuPc stationary phase coating on the GC system’s column walls micromachined in the host silicon wafer substrate and the Pyrex® cover plate which are subsequently electrostatically bonded together. The CuPc-coated chemiresistor was designed and fabricated using conventional VLSI circuit processing techniques. The miniature GC system has demonstrated the capability to directly and completely separate parts-per-million (ppm) ammonia and nitrogen dioxide concentrations when isothermally operated (55–80°C). With a helium carrier gas and nitrogen diluent, a 10 μl sample volume containing ammonia and nitrogen dioxide injected at 40 psi can be separated in less than 30 minutes.","PeriodicalId":72652,"journal":{"name":"Complex engineering systems (Alhambra, Calif.)","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1996-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76900360","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}

引用次数: 1

A Curriculum for Engineering Systems 工程系统课程

Complex engineering systems (Alhambra, Calif.) Pub Date : 1996-11-17 DOI: 10.1115/imece1996-0868

R. Shoureshi, J. Gosink, N. Middleton

引用次数: 0

Developing High Technology Spacecraft in a Severely Cost Constrained Environment 在成本严重受限的环境下发展高技术航天器

Complex engineering systems (Alhambra, Calif.) Pub Date : 1996-11-17 DOI: 10.1115/imece1996-0880

E. Euler

引用次数: 0