Control Engineering hot topics, September 2017

Control Engineering's most clicked articles in September 2017 included stories about PID, ladder logic, differential pressure flowmeters, cloud computing, and process sensors. Miss something? You can catch up here.

10/01/2017


Figure 1: In this example of a well-behaved process, the process variable (green) reacts more-or-less immediately to a step change in the control effort (red). It then rises at an ever-decreasing rate until it reaches a steady-state value. First-order lag processes such as this one—common in temperature, pressure, and flow control applications—are particularly amenable to PID control. Courtesy: Control EngineeringHot topics in Control Engineering, for September 2017, included PID, ladder logic, differential pressure flowmeters, cloud computing, and process sensors. These are based on the top 10 most read articles online in Control Engineering September. Links to each article below.

1. To PID or not to PID

The venerable proportional-integral-derivative (PID) algorithm can solve a variety of feedback control problems, but not all.

2. Ladder Logic: Auto cycles and safety routines

The auto cycle command in ladder logic allows the auto cycle to start in auto mode if no faults are present and for the cycle to stop only when the auto sequence has not been started.

3. Square root scaling for differential pressure flowmeters

The square root for differential pressure-(DP-) based flow can be taken either in the transmitter or in the controller and its easier to configure the transmitter to take the square root because, on the low end, a very small change in DP results in a large change in flow.

4. Ten control system programming best practices

Best practices for programmers include defining their structure, knowing the system resources and tools, consistency, and keeping track of changes during a project.

5. How cloud computing works for industrial processes

Cloud computing can process, filter, and analyze data using an HMI that can then be turned into actionable information for industrial facilities.

6. Choosing sensors for the application: Answers to audience questions

The Control Engineering RCEP webcast, “Choosing sensors for the application,” resulted in more questions than speakers had time to answer in the allotted time. Here each speaker provides more answers.

7. Safety compliance and changing industry practices

To minimize worker injuries and incidents, look at existing workflows to assess the degree of risk and identify areas of concern. Then form specific and targeted interventions that can address these gaps.

8. An integrated network for Industrie 4.0

System integration via the cloud makes networking at the production level easy and secure by vertically integrating management and systems as well as providing a security function for Industrie 4.0.

9. Know when to use open- or closed-loop control

Open-loop controls and closed-loop controls each have unique situations where they are needed and the operator needs to know the setting and the situation before deciding on which one to use.

10. Eight things to avoid in control system automation projects

Identifying missteps such as not building a cross-functional team and not defining responsibilities early in a project can help ensure that a control system automation project is successful.

The list was developed using CFE Media's web analytics for stories viewed on controleng.com, September 1-30, for articles published within the last two months.

On Mondays, see the top 5 articles of the prior week. In January, see the hot topics for the prior year.

Chris Vavra, production editor, CFE Media, cvavra@cfemedia.com.



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May 2018
Salary and Career Survey, IT and OT convergence, robotic standards and safety, secure circuit protection
April 2018
Cybersecurity best practices, artificial intelligence, robotic additive manufacturing, embedded systems, IIoT integration, energy efficiency
March 2018
Digitalization integration, process sensors, edge computing, fog computing, condition monitoring, and motors
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April 2018
ROVs, rigs, and the real time; wellsite valve manifolds; AI on a chip; analytics use for pipelines
February 2018
Focus on power systems, process safety, electrical and power systems, edge computing in the oil & gas industry
December 2017
Product of the Year winners, Pattern recognition, Engineering analytics, Revitalize older pump installations
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 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. Vote now (if qualified)!
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.
How to Maximize Factory Automation Efficiency with Low Cost Machine Vision
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Wireless Reliability in Harsh Environments
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
Human Factors and the Impact on Plant Safety
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
May 2018
Salary and Career Survey, IT and OT convergence, robotic standards and safety, secure circuit protection
April 2018
Cybersecurity best practices, artificial intelligence, robotic additive manufacturing, embedded systems, IIoT integration, energy efficiency
March 2018
Digitalization integration, process sensors, edge computing, fog computing, condition monitoring, and motors
Edge Computing
This article collection contains several articles on how today's technologies heap benefits onto an edge-computing architecture such as faster computing, better networking, more memory, smarter analytics, cloud-based intelligence, and lower costs.
IIoT: Machines, Equipment, & Asset Management
Articles in this digital report highlight technologies that enable Industrial Internet of Things, IIoT-related products and strategies.
PLCs
Programmable logic controllers (PLCs) represent the logic (decision) part of the control loop of sense, decide, and actuate. Featured articles in this digital report compare PLCs and programmable automation controllers (PACs), industrial PCs, and robotic controllers.
SIDB

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

April 2018
ROVs, rigs, and the real time; wellsite valve manifolds; AI on a chip; analytics use for pipelines
February 2018
Focus on power systems, process safety, electrical and power systems, edge computing in the oil & gas industry
December 2017
Product of the Year winners, Pattern recognition, Engineering analytics, Revitalize older pump installations
John O. Ayuk, PE, CFSE, PMP, CAP
Automation Engineer; Wood Group
Doug Baker
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
Data Centers: Impacts of Climate and Cooling Technology
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
Safety First: Arc Flash 101
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
Critical Power: Hospital Electrical Systems
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. Vote now (if qualified)!
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.
How to Maximize Factory Automation Efficiency with Low Cost Machine Vision
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Wireless Reliability in Harsh Environments
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
Human Factors and the Impact on Plant Safety
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
May 2018
Salary and Career Survey, IT and OT convergence, robotic standards and safety, secure circuit protection
April 2018
Cybersecurity best practices, artificial intelligence, robotic additive manufacturing, embedded systems, IIoT integration, energy efficiency
March 2018
Digitalization integration, process sensors, edge computing, fog computing, condition monitoring, and motors
Edge Computing
This article collection contains several articles on how today's technologies heap benefits onto an edge-computing architecture such as faster computing, better networking, more memory, smarter analytics, cloud-based intelligence, and lower costs.
IIoT: Machines, Equipment, & Asset Management
Articles in this digital report highlight technologies that enable Industrial Internet of Things, IIoT-related products and strategies.
PLCs
Programmable logic controllers (PLCs) represent the logic (decision) part of the control loop of sense, decide, and actuate. Featured articles in this digital report compare PLCs and programmable automation controllers (PACs), industrial PCs, and robotic controllers.
SIDB

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

April 2018
ROVs, rigs, and the real time; wellsite valve manifolds; AI on a chip; analytics use for pipelines
February 2018
Focus on power systems, process safety, electrical and power systems, edge computing in the oil & gas industry
December 2017
Product of the Year winners, Pattern recognition, Engineering analytics, Revitalize older pump installations
John O. Ayuk, PE, CFSE, PMP, CAP
Automation Engineer; Wood Group
Doug Baker
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
Data Centers: Impacts of Climate and Cooling Technology
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
Safety First: Arc Flash 101
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
Critical Power: Hospital Electrical Systems
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
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