60th Anniversary: CE History from 60, 30, and 15 years ago on computers, better automation software, and open systems

Happy 60th, Control Engineering! Help us celebrate by looking at issues from 60, 30, and 15 years ago. Control Engineering magazine first published in September 1954. This monthly column in 2014 will review coverage in issues 60, 30, and 15 years ago. While technologies have progressed since then, topics below (digital computers, computer control systems, process control open systems) remain relevant today.

09/05/2014


September 1954: What computers promise

Giant digital computers, handling an increasing share of office work or solving overwhelming technical problems, are often compared with regiments of clerks wielding pencils or battalions of engineers brandishing slide rules. The analog computers, steadily finding new jobs in process control, are likened to human operators with the eyes of Argus and the limbs of a millipede.

Comparisons of this sort are generally misleading. Computers are information processing devices. They perform long series of elementary logical and arithmetical operations on information and condense it to useful forms. As such, computers complement man's deductive processes. Merely equating their speed with human bustle gives computers both less and far more than their due. Mechanical and electronic "brains" cannot compete with the human mind's scope, capacity, flexibility, or adaptability.

September 1984: Hierarchical computer control systems: Automating the planning process

When F.P. Brooks wrote the "Mythical Man Month," he compared the current software development process to the La Brea Tar Pits in Los Angeles. He presented his recommendations for the management of the development of large systems as a "boardwalk across the tar." He also said, "Show me your flow charts and conceal your tables, and I shall continue to be mystified." It seems tables make good bridges while flow charts make tar.

The methods used for the production of process control software are not improving quickly enough to keep up with the expanding needs of American industry. We are going to have to construct more than a temporary boardwalk in the case of industrial automation. What we need is a good modern steel bridge. The bridge we require will be composed of efficient software tools that display the structure and function of software in exactly the same way a good blueprint describes the structure and function of a bridge.

September 1999: Open systems in process control: Are they the answer?

Finding a single definition for the term "open system" is a thorny problem. In an open system, control engineers should be able to take appropriate control hardware (sensors, controllers, PCs, cabling, etc.) and software (any standard platform should do) and assemble the control application required to run a process plant.

Consensus among process control suppliers came slowly, taking most of the 90s to implement. As customers demanded open system benefits, evolutions of the true open system (and its unique definition) became unstoppable.

According to the "ISA Comprehensive Dictionary of Measurement and Control," 3rd Ed., an open system is defined as one "that complies with the requirements of the OSI (open system connection) reference model in its communication with other open systems." Fitting into and working within the thorns of this definition varies among the control system suppliers, however.

- 2014 edits, to fit this page, by Chris Vavra, content specialist, CFE Media.



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John O. Ayuk, PE, CFSE, PMP, CAP
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This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
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This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
Engineers' Choice Awards
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by Control Engineering subscribers.
System Integrator Giants
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
System Integrator of the Year
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
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This eGuide explains how the operation of hydraulic systems for subsea applications requires the user to consider additional aspects because of the unique conditions that apply to the setting
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Data centers, data closets, edge and cloud computing, co-location facilities, and similar topics are among the fastest-changing in the industry.
IIoT: Machines, Equipment, & Asset Management
Articles in this digital report highlight technologies that enable Industrial Internet of Things, IIoT-related products and strategies.
SIDB

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

October 2018
2018 Product of the Year; Subsurface data methodologies; Digital twins; Well lifecycle data
August 2018
SCADA standardization, capital expenditures, data-driven drilling and execution
June 2018
Machine learning, produced water benefits, progressive cavity pumps
John O. Ayuk, PE, CFSE, PMP, CAP
Automation Engineer; Wood Group
Doug Baker
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
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Fire & Life Safety Engineer; Technip USA Inc.
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This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
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This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
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This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
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