Book Review: Direct Digital Control Systems: J. B. KNOWLES

1995 ◽  
Vol 32 (3) ◽  
pp. 285-285
Author(s):  
P. E. Wellstead
Keyword(s):  
Control Systems ◽  
Digital Control ◽  
Digital Control Systems ◽  
Direct Digital Control

scholarly journals DIRECT DIGITAL CONTROL IN A COMPLEX OF SOFTWARE DESIGN OF DIGITAL CONTROL SYSTEMS

2017 ◽  
Vol 3 ◽  
pp. 337
Author(s):  
Sergei Verteshev ◽  
Vladimir Konevtsov
Keyword(s):  
Automatic Control ◽  
Programming Languages ◽  
Control Systems ◽  
Software Design ◽  
Digital Control ◽  
Computer Aided Design ◽  
Digital Controllers ◽  
International Standard ◽  
Digital Control Systems ◽  
Direct Digital Control

This article provides the functionality of creating direct digital control devices in the computer-aided design of digital automatic control systems (CAD of digital ACS), in a complex of software design of digital control systems (SDSDC complex) for automated process control systems. Technical tools are defined by the international standard IEC 61131-1: 2003 (Part 1: General data). The possibility of implementing SDSDC complex in direct digital control, single-cycle and multi-cycle ladder diagrams, identification of objects of management and synthesis of digital controllers in comparison with the international standard IEC 61131-3: 2003 (Part 3: Programming Languages) are evaluated. Users’ productivity is estimated as well as the possibility of its separation between the users at different stages of the design of digital systems of automatic control is assessed.

The Positioning of Control Valves in Digital Control Systems

1981 ◽  
Vol 14 (12) ◽  
pp. 443-445
Author(s):  
A. J. Hinkins ◽  
J. M. Malcolm ◽  
R. I. Little
Keyword(s):  
Process Control ◽  
Control Systems ◽  
Digital Control ◽  
Positioning Systems ◽  
Control Valves ◽  
Control Loops ◽  
Digital Control Systems ◽  
History Of ◽  
Functional Layout ◽  
Direct Digital Control

The history of valve positioning systems on process control loops is reviewed. The advent of single loop micro-processor based controllers makes possible an improved functional layout for such systems, which has previously found application on direct digital control systems. If this new layout should find support within the industry, then some form of national co-ordination of the development of interface standards would be desirable.

scholarly journals DIRECT DIGITAL CONTROL IN A COMPLEX OF SOFTWARE DESIGN OF DIGITAL CONTROL SYSTEMS

2017 ◽  
Vol 3 ◽  
pp. 332
Author(s):  
Sergei Verteshev ◽  
Vladimir Konevtsov
Keyword(s):  
Automatic Control ◽  
Programming Languages ◽  
Control Systems ◽  
Software Design ◽  
Digital Control ◽  
Computer Aided Design ◽  
Digital Controllers ◽  
International Standard ◽  
Digital Control Systems ◽  
Direct Digital Control

This article provides the functionality of creating direct digital control devices in the computer-aided design of digital automatic control systems (CAD of digital ACS), in a complex of software design of digital control systems (SDSDC complex) for automated process control systems. Technical tools are defined by the international standard IEC 61131-1: 2003 (Part 1: General data). The possibility of implementing SDSDC complex in direct digital control, single-cycle and multi-cycle ladder diagrams, identification of objects of management and synthesis of digital controllers in comparison with the international standard IEC 61131-3: 2003 (Part 3: Programming Languages) are evaluated. Users’ productivity is estimated as well as the possibility of its separation between the users at different stages of the design of digital systems of automatic control is assessed.

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