CE blog: Ask Charlie turns 100!

The Jan. 12, 2009, posting in the Control Engineering Ask Charlie blog is the 100th in the series, answering questions from readers. The automation tutorial blog covers discrete control, motors, drives, sensors, motion control, machine control, embedded systems, and other areas.

01/13/2009


Oak Brook, IL — No, it’s not 100 years old, but the Jan. 12, 2009, posting in the

Control Engineering Ask Charlie blog

is the 100th in the automation tutorial series. Starting with the first posting on March 3, 2007, Ask Charlie has consistently ranked highest in popularity among control engineering professionals. The Ask Charlie blog covers all aspects of automation, especially discrete control, motors, drives, sensors, motion control, machine control and embedded systems. Control Engineering 's print and online magazines, newsletters and other publications.

Image accompanying the first Ask Charlie blog posting explained data acquisition system architecture.

Image accompanying the first Ask Charlie blog posting explained data acquisition system architecture.

That first posting answered the question “

How can I use a PC to measure voltage and current?”

It said: “The technology for measuring virtually any physical quantity using a computer is called data acquisition (DAQ) and is very mature, despite the number of engineers who feel unfamiliar with it. In fact, every engineer uses it regularly for taking measurements because virtually every digital measuring instrument is based on DAQ principles. Oscilloscopes, digital multimeters, SCADA systems, PLCs and anything else that takes analog input and provides digital output uses DAQ architecture. For most of these applications, however, the DAQ architecture is hidden away inside a box to make it look like a specialized piece of equipment.” It went on to discuss DAQ history, architecture and how control engineers can use the technology.
The Jan. 12, 2009, posting answers the question:

“How do gearmotors compare to V-belt drives?"

It points out that through most of the 20th Century, V-belts were generally the best choice for industrial power-transmission applications, largely because of the high cost of machining gears. Advances in CNC milling, coupled with other factors, have driven the total-lifecycle-cost of gearmotors well below that of other mechanical-power sources — including V-belts. They should now be the first choice for industrial power applications.
C.G. Masi , senior editor
Control Engineering News Desk
Register here and scroll down to select your choice of eNewsletters free.





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Intelligent, efficient PLC programming: Cost-saving programming languages are available now; Automation system upgrades; Help from the cloud; Improving flow control; System integration tips
Smarter machines require smarter systems; Fixing PID, part 3; Process safety; Hardware and software integration; Legalities: Integrated lean project delivery
Choosing controllers: PLCs, PACs, IPCs, DCS? What's best for your application?; Wireless trends; Design, integration; Manufacturing Day; Product Exclusive
PLCs, robots, and the quest for a single controller; how OEE is key to automation solutions.
This article collection contains several articles on improving the use of PID.
Learn how Industry 4.0 adds supply chain efficiency, optimizes pricing, improves quality, and more.

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

Special report: U.S. natural gas; LNG transport technologies evolve to meet market demand; Understanding new methane regulations; Predictive maintenance for gas pipeline compressors
Cyber security cost-efficient for industrial control systems; Extracting full value from operational data; Managing cyber security risks
Drilling for Big Data: Managing the flow of information; Big data drilldown series: Challenge and opportunity; OT to IT: Creating a circle of improvement; Industry loses best workers, again