Featured Research

from universities, journals, and other organizations

Insulation unit: Quiet area for sensitive devices

Date:
March 15, 2011
Source:
Fraunhofer-Gesellschaft
Summary:
Devices for precise analysis or manufacturing are very sensitive to ambient vibrations. Experts have now developed an insulation unit that actively counteracts these effects emanating from the environment.

Devices for precise analysis or manufacturing are very sensitive to ambient vibrations. The experts at Fraunhofer have developed an insulation unit that actively counteracts these effects emanating from the environment. This compact and flexible system can be viewed at the Hannover Messe trade fair (April 4-8 in Hanover) at the booth of the Fraunhofer Adaptronics Alliance.

It is difficult to write a letter on a driving bus, or to measure small distances on a vibrating plate -- the vibrations simply interfere too much. Any small vibration coming from the floor is already too much if there is an increased requirement with respect to accuracy. They hamper high-resolution measurements of distance or roughness -- as in scanning electron microscopy. They are also not desired in production if precision is a requirement. For this reason, the devices must be settled in such a manner that they are stable and quiet. Damping is necessary also when the machines/devices themselves vibrate and this movement is not supposed to be transferred to the flooring.

The adaptronics specialists of the Fraunhofer Adaptronics Alliance have developed an insulation unit that meets these requirements and is compact at the same time. With the help of piezo-electric ceramics, the researchers were able to integrate all necessary functions into a single, adaptronic component. It provides requisite rigidity, registers vibrations and counteracts them actively. This makes the unit superior to the current solutions for vibration insulation. In contrast to passive solutions -- for example, using rubber elements under machines -- the new solution works at even very low interference frequencies. However, traditional mechatronic insulation systems are able to do that as well. They actively attract the forces, just like the platform, and then counteract the movement, so to speak. Their disadvantage: they are comparatively large and consist of many components.

"One of the particular advantages in the insulation unit that we developed lies in the implemented digital control. This results in a particularly high flexibility, which cannot be achieved in this manner using analog controls," says Dr. Tobias Melz, managing director of the Fraunhofer Adaptronics Alliance. "The platform can be used not only for small machines or devices, but also for large ones, as it is relatively easy to adapt with respect to size. Our system can be implemented in such a compact and flexible manner that it could be integrated directly into the machines, for example into measuring instruments and production systems. The respective system need not be set up on a platform; rather, it is able to insulate itself from the vibration," explains Dipl.-Ing. Torsten Bartel, the responsible project manager at the Fraunhofer Institute for Structural Durability and System Reliability LBF.

Torsten Bartel and his colleagues are presenting the platform at work at the Hannover Messe: It already insulates against vibration in one spatial direction and two rotational movements. In addition, the experts are introducing an element that makes it possible to achieve damping effects in additional spatial directions. In the future, they want to expand the platform such that it will dampen all six directional movements of the setup machine/device.


Story Source:

The above story is based on materials provided by Fraunhofer-Gesellschaft. Note: Materials may be edited for content and length.


Cite This Page:

Fraunhofer-Gesellschaft. "Insulation unit: Quiet area for sensitive devices." ScienceDaily. ScienceDaily, 15 March 2011. <www.sciencedaily.com/releases/2011/03/110315093840.htm>.
Fraunhofer-Gesellschaft. (2011, March 15). Insulation unit: Quiet area for sensitive devices. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2011/03/110315093840.htm
Fraunhofer-Gesellschaft. "Insulation unit: Quiet area for sensitive devices." ScienceDaily. www.sciencedaily.com/releases/2011/03/110315093840.htm (accessed October 21, 2014).

Share This



More Matter & Energy News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Gulfstream G500, G600 Unveiling

Gulfstream G500, G600 Unveiling

Flying (Oct. 20, 2014) Watch Gulfstream's public launch of the G500 and G600 at their headquarters in Savannah, Ga., along with a surprise unveiling of the G500, which taxied up under its own power. Video provided by Flying
Powered by NewsLook.com
Japanese Scientists Unveil Floating 3D Projection

Japanese Scientists Unveil Floating 3D Projection

Reuters - Innovations Video Online (Oct. 20, 2014) Scientists in Tokyo have demonstrated what they say is the world's first 3D projection that floats in mid air. A laser that fires a pulse up to a thousand times a second superheats molecules in the air, creating a spark which can be guided to certain points in the air to shape what the human eye perceives as an image. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

3BL Media (Oct. 20, 2014) Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-fuel Impala Video provided by 3BL
Powered by NewsLook.com
What We Know About Microsoft's Rumored Smartwatch

What We Know About Microsoft's Rumored Smartwatch

Newsy (Oct. 20, 2014) Microsoft will reportedly release a smartwatch that works across different mobile platforms, has a two-day battery life and tracks heart rate. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins