Top Control Engineering articles, December 2012
The most-visited articles at www.controleng.com during December 2012 included the following topics: best products, fixing PID, mobile apps, System Integrator of the Year winners and prior winners, System Integrator Giants, feedback controllers, VFD selection, HART communication, level control, and lean manufacturing, among others.
Mark T. Hoske
Most-read Control Engineering online articles for December 2012 at www.controleng.com included these topics: Control Engineering Engineers’ Choice Award finalists, how to fix PID, Apps for Engineers, System Integrator of the Year winners and prior winners, System Integrator Giants, feedback controllers, VFD selection, HART communication, level control, lean manufacturing, and flowmeter selection, among others. (Note that we post fresh control engineering content each business day, so some articles posted later in the month don’t get as much time for exposure as those posted earlier.) More about each article and links follow.
Control Engineering Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by Control Engineering's print and online subscribers. Subscribers to the North American print and digital editions are asked to select the best products based on technological advancement, service to the industry, and market impact. Winners will be announced in February.
Proportional-Integral-Derivative controllers may be ubiquitous, but they’re not perfect.
Product Exclusive: CFE Media’s Apps for Engineers software is an “app of apps,” providing an interactive directory of approximately 60 mobile engineering-related software applications useful for Control Engineering, Plant Engineering, and Consulting-Specifying Engineer areas of coverage.
Automation Integrator Guide cover story: Control Engineering recognizes the best system integrators in the industrial automation business. The winners are...
These 100 firms represent the largest system integrators of 2012, from among 2,334 in the Control Engineering Automation Integrator Guide.
Each year, a panel of Control Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories (based on the size of the organization). Three general criteria are considered for the selection of winners: business skills, technical competence, and customer satisfaction. Winners are then inducted into our System Integrator Hall of Fame. This page was updated in December 2012 with the class of 2013.
But meeting a specific performance measure is harder than it looks.
How to select a VFD - These guidelines dispel the confusion about matching variable frequency drives (VFD) and motors to fans and pumps that are typically encountered in commercial building applications. While the motivation to increase energy efficiency could be financial (reduced energy costs) or ethical (reduce greenhouse gas emissions associated with power production), it is taken for granted that VFDs are an easy way to improve energy efficiency in a motor application. And with these noble intentions in mind, the engineer will specify a VFD for his client. Oftentimes, that isn't the end of the story for the engineer.
HART-enabled process instrumentation is everywhere, but how does it communicate? New chip designs support this time-tested protocol.
Avoid trips and maximize steam output by reviewing your control equipment, strategy, and tuning.
Implementing lean manufacturing requires participants to review job environment and satisfaction, motivate participation, demand leadership responsibility, develop new behavior patterns, and insist on lean methods and tools.
Using a best-in-class flowmeter selection methodology can help users avoid surprises and reduce lifecycle costs by identifying the optimal flow meter for virtually any flow application.
Additional highly read articles online during December follow, below.
Disturbance-Rejection vs. Setpoint-Tracking Controllers - Designing a feedback control loop starts with understanding its objective as well as the process’s behavior.
Robotic bird flies at Pack Expo 2012 - Festo Corp.’s SmartBird, a bionic, lifelike herring gull replica capable of autonomous flight via remote control, was demonstrated a Pack Expo 2012, continuing the company’s work that emulates nature to help advance industrial automation products.
Substation automation and automation of the control house - In place of hardwired control panels of the past, some sort of a human machine interface is being installed in substations.
How close are we to a truly Smart Grid? There are still hurdles to overcome, at least in the U.S., before the Smart Grid becomes reality.
Large touchscreen HMI offers full PLC capability - PLC built into 12.1-in. HMI from Unitronics can support 24 loops and 1,000 I/O points.
UML use cases, sequence diagrams: easily converted into executable code - Engineering and IT Insight: UML (Unified Modeling Language) is the language of software engineering, and State Models in UML are used to define internal logic. When state diagrams, use case diagrams, and sequence diagrams are combined with UML class diagrams they define a system, can be easily understood by non-programmers, and can be rapidly converted into executable code.
Industrial RFID trends - Factory automation RFID technology trends differ from those of logistics or commercial RFID systems. Factory floor RFID components are more industrial and hardened for less downtime, with faster data acquisition.
A look at the Smart Grid’s demand side - Automation industry exec says this is where users can “Do something now” while waiting for the Smart Grid to take shape.
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- Compiled by Mark T. Hoske, CFE Media, Control Engineering, www.controleng.com.
Coming soon: Top Control Engineering articles of 2012.
Also see: Top Control Engineering articles of 2011 and best read of prior months, below.
Engineering interaction: Which articles did you find to be most useful and why? Leave a comment below.