检索结果-内蒙古大学图书馆

PLC's into Offshore Shut-Down Systems

IFAC Proceedings Volumes 1983年第18期16卷 201-206页

作者： P. Chamoux O. Schmid Société Nationale Elf Aquitaine (Production) 26 Avenue des Lilas 64018 Pau Cedex France

Programmable Logical controller based safety systems are spreading in the oil industry. Provided that some precaution are taken, PLC's can lead to good level of safety and fairly low rate of spurious shutdowns. However, some advances have to be made in the field of built-in self-monitoring devices, especially for input and output cards.

关键词： controllers control engineering computer applications Oil technology Reliability theory

来源：评论

学校读者我要写书评

暂无评论

BIT Serial Communication in Decentralized control Systems – Approaches for Common Solutions

引用

IFAC Proceedings Volumes 1978年第1期11卷 707-714页

作者： Harald Walze Kemforschungszentrum Karlsruhe GmbH Projekt PDV Postfach 3640 D 7500 Karlsruhe FRG

All existing decentralized control systems make use of different communication techniques between device-subsystems. This impedes the configuration of user systems with components from different sources and requires a common solution for bit serial process data transmission. On the background of industrial requirements two common approaches are presented, discussed and compared.

关键词： Centralized plant control computer applications control engineering computer applications digital control direct digital control industrial control process control

来源：评论

学校读者我要写书评

暂无评论

computer Configuration for The Development and Testing of Microprocessor Based control Algorithms

引用

IFAC Proceedings Volumes 1979年第3期12卷 109-114页

作者： J.O. Gray G.D. Hassapis Department of Electrical Engineering and Electronics U.M.I.S.T. Manchester U.K.

A development and test facility for microprocessor based control algorithms has been devised with emphasis on minimising hardware cost and making the maximum use of existing facilities. A minicomputer with resident cross assembler is used to develop control programs which can be directly transferred by a digital interface to a microprocessor acting as a digital controller in a hybrid simulation of the system dynamics. This configuration allows both hardware and software elements of any installation to be simultaneously evaluated. The facility is applied to the design of compensators for a chemical process.

关键词： control engineering computer applications microprocessors minicomputers hybrid computers process control

来源：评论

学校读者我要写书评

暂无评论

G7.2: Design Considerations for Microprocessor Based controllers

引用

IFAC Proceedings Volumes 1980年第9期13卷 451-456页

作者： A.H. Glattfelder F. Huguenin W. Schaufelberger Escher Wyss A G. Zürich Switzerland Swiss Federal Institute of Technology Zürich Switzerland

A top-down design procedure for the early stages of a microprocessor based controller design problem is presented in this paper. Problem definition and preliminary design are treated. Information structure, algorithms, software and hardware have to be evaluated, assessed and chosen in this phase. Two examples demonstrate how the process can be applied to actual problems

关键词： computer control computer selection and evaluation control engineering computer applications Digital control Industrial control Microprocessors Process control Systems engineering

来源：评论

学校读者我要写书评

暂无评论

Recent Advances in the L-A-S Software used in CAD of control Systems

引用

IFAC Proceedings Volumes 1985年第8期18卷 145-150页

作者： S.P. Bingulac P.J. West W.R. Perkins Electrical Engineering Department Virginia Polytechnic Institute and State University Blacksburg VA 24061 USA Coordinated Science Laboratory and Department of Electrical and Computer Engineering University of Illinois Urbana IL 61801 USA

This paper reviews the basic features of a high-level, interactive, conversational language called L-A-S (Linear AIgebra and Systems). Particular emphasis is placed upon recent developments of this computer-Aided Design (CAD) language. Unlike the conventional menu-driven approach of many CAD packages, L -A -S provides the user with considerable flexibility in the development and maintenance of linear algebra and control algorithms. L-A-S is both a language and an interpreter. Users or L-A-S write programes while interacting with the Interpreter. Programs may he edited, stored, recalled, and executed with the same or a differernt data set. L-A-S data strunures include matrices, polynomials (continuos or discrete). and matrices of polynomials. In this paper. we briefly review the basics or the L-A-S language. Then. we concentrate on those features of L-A-S which have been added within the last year. These include the Multiple Operator Statement (MOS), L-A-S lNT-delined suhroutines. and the most-reccnt “echo” feature for interaction with the interpreter. Example, accompany the text to illustrate each new feature.

关键词： computer-aided Design Programming Languages control engineering computer applications control System Analysis/Synthesis

来源：评论

学校读者我要写书评

暂无评论

The L-SAT Attitude and Orbit control Subsystem

引用

IFAC Proceedings Volumes 1983年第11期16卷 47-56页

作者： J.W. Pengelly E. Fyfe A.J. Rogers Electronics Department Space and Communications Division British Aerospace Dynamics Group Stevenage Herts UK

The control system adopted for L-SAT is based on a zero-momentum concept relatively insensitive to spacecraft configuration changes. This flexibility is further enhanced by the use of a microprocessor based controller. The overall AOCS configuration adopted is described, the theoretical design aspects outlined and the functions and implementation of the controller discussed. The subsystem electronic configuration concentrates the majority of control sequence algorithm implementation, telemetry, telecommand and power control into the controller. This unit communicates to other subsystem equipments through use of a high reliability serial data bus. A similar data bus is used internally in the controller providing a highly modular design concept which enables a wide range of applications to be met using the flexibility of software.

关键词： Attitude control control engineering computer applications Digital control Microprocessors Space Vehicles

来源：评论

学校读者我要写书评

暂无评论

Automatic Synthesis of a Packaged Program for Real Time Technological Process control

引用

IFAC Proceedings Volumes 1979年第7期12卷 285-298页

作者： I. Hantuch Institute of Technical Cybernetics Slovak Academy of Sciences Bratislava Czechoslovakia

This contribution refers to certain problems bearing upon the formation of a system generator programing medium of an automatic synthesis for the modular construction of a packaged program for real time technological process control. The package is made up of standard subroutines-functional modules, carrying out the basic control functions. The user defines the task in the problem-oriented "graf language" designed by an analysis of project documentation for automated systems of technological process control. From the viewpoint of software, this is an establishment of a communication and synchronization system, implemented by standard connectors and starting subroutines, operating over the central database and by a system of tables for recording required items of information on the structure of the control package.

关键词： control system synthesis control engineering computer applications programing languages real time applications

来源：评论

学校读者我要写书评

暂无评论

Identification of Coherent Machine Groups in Electric Power Systems

引用

IFAC Proceedings Volumes 1979年第5期12卷 241-247页

作者： E. Ruppert Filho Electrical Engineering Department of FEC/UNICAMP - Campinas - SP - Brasil

This paper describes a method to make fast and reliable the identification of coherent machine groups for Electric Power Systems dynamic equivalents construction to be used in planning studies and in on-line dynamic security, may be. The method is based on Lyapunov Direct Method and uses some simplifications on the nodal bus admittance matrix of reduced to generation buses system.

关键词： Computational methods control engineering computer applications dynamic stability Lyapunov method nonlinear systems power system control

来源：评论

学校读者我要写书评

暂无评论

On Possibilities and Limits of Process Modelling in the Particleboard Production

引用

IFAC Proceedings Volumes 1986年第12期19卷 245-250页

作者： W. Landmesser P. Niemz WTZ Holz Dresden GDR Department of wood and fiber technology Dresden University of Technology Dresden GDR

The mathematical description of the process of property formation is an essential prerequisition for improving the control of particleboard plants by application of process control systems. The results of the process modelling in performing passive trials in industrial plants are reported on. The available measurement technique and the knowledge of technological relationships limit at present still the mathematical description of the overall process considerably. The paper emphasizes the presentation of possibilities for the stepwise development of process models.

关键词： Particleboard production process control modelling control engineering computer applications microprocessors parameter estimation properties of particleboard

来源：评论

学校读者我要写书评

暂无评论

Train Simulator

引用

IFAC Proceedings Volumes 1990年第2期23卷 155-161页

作者： S. Colombi Swiss Federal Institute of Technology Industrial Electronic Laboratory DE-Ecublens. 1015 Lausanne Switzerland

This paper describes a realtime digital train simulator which was realized to develop real braking devices. The main originalities of this simulator consists in the solutions introduced in order to allow a true simulation of the reality at reasonable price. In particular, in the modelling, we simplified the coupling static characteristics. This made it possible an analytic solution of the motion and coupling equations and therefore a reduction of the computing power requirements. On the other hand, to limit the hardware cost, we adopted a multiprocessor architecture where the simulation processors work in pipeline.

关键词： control engineering computer applications Modelling Nonlinear equations Numerical methods Convergence of numerical methods Multiprocessor architecture Parallel processing

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：