The utilization of computers in design work is based on three facts: fastness, error-free processing and integration of data. Great advantages can be achieved by integrating the data management system and the graphic ...
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ISBN:
(纸本)0080325572
The utilization of computers in design work is based on three facts: fastness, error-free processing and integration of data. Great advantages can be achieved by integrating the data management system and the graphic system into a functional unit. The paper describes a computer-aided instrumentation designsystem. In step by step progressing design work, the data entered earlier are utilized in all phases of planning. The work advances by adding and revising the data stored in the system. The same piece of information can appear in several forms. Any data are, however, fed and updated only once.
An approach for computeraided planning, configuration and operation of a process controlsystem is outlined which supports systematic collection of all required informations, comfortable symbolic configuration of the...
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ISBN:
(纸本)0080325572
An approach for computeraided planning, configuration and operation of a process controlsystem is outlined which supports systematic collection of all required informations, comfortable symbolic configuration of the system function and automatic compilation of the collected information to various documentation files. It is indicated how the functional configuration and start-up of the process controlsystem can be supported by computer simulations, process identification and self-tuning features being part of the process controlsystem itself.
Research has been carried out during the last fifteen years in the field of ship controlsystems, with the main emphasis on automatic steering of ships. This work has resulted in the design of an adaptive autopilot (V...
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ISBN:
(纸本)0080325572
Research has been carried out during the last fifteen years in the field of ship controlsystems, with the main emphasis on automatic steering of ships. This work has resulted in the design of an adaptive autopilot (Van Amerongen, 1984). At the moment research is concentrated on the design of an autopilot which uses the rudder not only for course keeping but for stabilization of the roll angle as well. This paper demonstrates how modern computer-aideddesign methods may help in designing such a system, especially when analytical methods fail because of nonlinearities of the process.
Engineering simulation is a design tool for evaluation of advanced electrical concepts, controlsystems and system integration. The entire simulation system is designed to be highly interactive and flexible, tailored ...
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ISBN:
(纸本)0080325572
Engineering simulation is a design tool for evaluation of advanced electrical concepts, controlsystems and system integration. The entire simulation system is designed to be highly interactive and flexible, tailored for engineering development. Using digital computers requires to survey the numerical techniques in continuous simulation together with major software systems which exist. This paper consists of the current state-of-the-art giving some prospectives for future development.
作者：
Taylor, J.H.GE
Schenectady NY USA GE Schenectady NY USA
We report on recent progress in developing a computer-aided nonlinear controlsystem analysis and design environment based on sinusoidal-input describing function (SIDF) methods. Two major additions have been made to ...
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ISBN:
(纸本)0080325572
We report on recent progress in developing a computer-aided nonlinear controlsystem analysis and design environment based on sinusoidal-input describing function (SIDF) methods. Two major additions have been made to our CAD software for nonlinear controls during 1984: a simulation-based program for generating amplitude-dependent SIDF input/output models for nonlinear plants, and a frequency-domain nonlinear compensator design package. Both of these are described. This software can treat general nonlinear systems, with no restrictions as to system order, number of nonlinearities, configuration, or nonlinearity type. An overview of the application of this software to the design of controllers for a realistic, nonlinear model of an industrial robot was presented by the author in 1984, which serves to illustrate the use of these tools. Based on the software presented, the use of SIDF-based nonlinear controlsystem analysis and design methods is substantially easier to carry out.
The method presented illustrates how to specify a set of diagonal elements qii(s) i equals 1, 2,. . . . m of the open loop transfer function matrix (TFM) Q(s) to obtain a precompensator K(s) that satisfies the require...
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ISBN:
(纸本)0080325572
The method presented illustrates how to specify a set of diagonal elements qii(s) i equals 1, 2,. . . . m of the open loop transfer function matrix (TFM) Q(s) to obtain a precompensator K(s) that satisfies the requirements of stability, decoupling, robustness and dynamic behavior of output. This method is suitable for computer-aideddesign (CAD) since the design procedure is accomplished by computer except specifying qii(s). 4 multiplied by 4 examples are included.
The paper describes the role of software packages for computer-aidedcontrolsystems Analysis and design (CACSAD) in control engineering education. It is shown that CACSAD-systems are becoming an indispensible tool in...
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ISBN:
(纸本)0080325572
The paper describes the role of software packages for computer-aidedcontrolsystems Analysis and design (CACSAD) in control engineering education. It is shown that CACSAD-systems are becoming an indispensible tool in education because even sophisticated methods are more easily understood by the students. Realistic problems can be solved within reasonable time, especially laboratory experiments. As an example of a CACSAD-package, the KEDDC-system is described. It is shown how the KEDDC-system is introduced into the education of control engineers at the electrical engineering department of Ruhr-University, Bochum.
We discuss an architecture for an expert system to assist a control engineer in coping with the complexity of computer-aidedcontrol engineering, with emphasis on implementation. Issues to be treated include: rule bas...
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ISBN:
(纸本)0080325572
We discuss an architecture for an expert system to assist a control engineer in coping with the complexity of computer-aidedcontrol engineering, with emphasis on implementation. Issues to be treated include: rule base organization, knowledge to be contained in various rule bases, a mechanism to switch between rule bases as the problem solution proceeds, a protocol to coordinate the symbolic computations of the inference engine with the numeric computations of conventional analysis and design software, support of non-monotonic reasoning to permit retracting and revising steps in the design process, and conversion between numeric and symbolic data. We present our approach to these issues, and give examples of rules used to represent operational knowledge and to guide the solution of the problem.
We give a description of the capabilities of the Blaise system which has been designed as an interactive tool in computeraided engineering. This system implements a full programming language working on a data basis a...
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ISBN:
(纸本)0080325572
We give a description of the capabilities of the Blaise system which has been designed as an interactive tool in computeraided engineering. This system implements a full programming language working on a data basis adapted to control problems. It has been designed to achieve extensibility, portability and numerical efficiency.
Electric distribution networks are an essential part of power systems. In Poland systems of computer-aideddesign of HV and MV networks have been elaborated and put into operation. The system is based on the data base...
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ISBN:
(纸本)0080325572
Electric distribution networks are an essential part of power systems. In Poland systems of computer-aideddesign of HV and MV networks have been elaborated and put into operation. The system is based on the data base. It is composed of given data sets. The system has a block structure, and enables the user to guide the calculating process as it takes place. The user determines the sequence of performing the respective elements of the calculating process and, after every stage of the calculations, is able to return to any previous stage he chooses. The various calculations are performed in accordance with the user's instructions as in a problem oriented language, adapted to the needs of the system.
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