Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Software tackles production line machine 'cyclic jitters'

04.04.2008
Electronic commands passed from machine to machine over data networks increasingly drive today’s precisely timed and sequenced manufacturing production lines.

However timing irregularities in the signals from even one machine—a difference of only a tenth of a second from the expected—can result in havoc for manufacturing processes on the plant floor.

The timing glitches, called “cyclic jitters,” can cause real jitters, making production machines jump or shake, damaging products, even shutting down assembly lines. National Institute of Standards and Technology (NIST) engineers have created a software program to help avoid that problem.

The NIST “EtherNet/Industrial Protocol (IP) Performance Test Tool” enables manufacturers to anticipate how certain machines will perform as part of their data communication system. Data from the tool also can provide vendors with information need to better tune the performance of their equipment.

Individual vendors often define the performance characteristics of network devices in different ways. These documentation differences make it difficult for manufacturers or plant engineers to compare high-speed data transmission characteristics of similar devices. To determine how different performance characteristics relate, they have to make time-consuming searches through vendor manuals or spend hours contacting vendor company engineers. Although standardized tests can indicate how well devices conform to communication specifications, until now manufacturers never could be sure how well the device actually would work under normal or abnormally heavy transmission conditions on the factory floor.

The EtherNet/IP Performance Test Tool collects device information from the user, generates a set of test scripts based on that information, analyses the performance data and reports the results to the user. The software package provides device transmission data for three different conditions: with no background electronic traffic; with small background traffic; and with more than 240 devices on the network.

NIST began working on the project at the urging of U.S. Council for Automotive Research (USCAR)’s Plant Floor Controllers Task Force and developed the program in conjunction with the Open DeviceNet Vendor Association (ODVA) under a Cooperative Research and Development Agreement (CRADA). ODVA, a vendor organization that maintains the DeviceNet and EtherNet/IP standards used extensively by the U.S. automotive industry, plans to begin using the test tool as part of a new performance testing laboratory service later this year.

John Blair | EurekAlert!
Further information:
http://www.nist.gov

More articles from Information Technology:

nachricht Who can find the fish that makes the best sound?
28.02.2017 | Technische Universität Wien

nachricht Many Android password managers unsafe
28.02.2017 | Fraunhofer-Institut für Sichere Informationstechnologie SIT

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Safe glide at total engine failure with ELA-inside

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded after a glide flight with an Airbus A320 in ditching on the Hudson River. All 155 people on board were saved.

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded...

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

New technology offers fast peptide synthesis

28.02.2017 | Life Sciences

WSU research advances energy savings for oil, gas industries

28.02.2017 | Power and Electrical Engineering

Who can find the fish that makes the best sound?

28.02.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>