Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New system of automatic control capable of governing satellite telescopes

25.04.2006


A team of Control Engineering researchers at the Public University of Navarra has successfully finalised their work on QFT Multivariable Robust Control of Darwin-type Satellites with large flexible structures, undertaken for the European Space Agency (ESA).



The scientists have designed a new automatic control system capable of governing the Darwin Project satellite telescopes.

The Darwin Project


The European Space Agency is currently developing what is known as the Darwin Project involving the launching into space in 2014 of six satellite telescopes flying in formation. This mission will enable the study of the Universe with hitherto unprecedented precision and depth, improving on current telescopes by several orders of magnitude. Amongst the immediate aims is the search for new planets outside the Solar System and which have possibilities of life on them.

The work developed by the team of researchers at the Public University of Navarra on the design of new control systems for governing satellites in formation attracted the attention of the ESA.

The problem was one of enormous complexity, the remit of the researchers from Navarre requiring the design of a new automatic control system capable of governing satellites in a high-precision manner. In fact, it had to be undertaken with a precision in the order of micro-meters in the orbital three-dimensional position and of milliarcseconds (a 3.6 millionth part of a degree) in each one of the three angles of orientation in space. Moreover, the vibrations introduced by their flexible structures, wind perturbations and gravitational phenomena had to be rejected simultaneously. These specifications were imposed by the enormous precision required of the on-board telescopes whose mission is to probe the furthest points of the Universe with great exactitude.

In developing the research project, two control systems, previously designed for the ESA by an international consortium, were employed. This part of the work involved comparing these with the latest theories on QFT multivariable robust control developed by the research team.

The final results of the project have proved totally satisfactory. The viability of the new QFT developments has been confirmed, improving greatly on the dynamic behaviour of the satellite achieved by previous control theories regarding the twelve evaluation criteria studied.

Irati Kortabitarte | alfa
Further information:
http://www.basqueresearch.com/berria_irakurri.asp?Gelaxka=1_1&hizk=I&Berri_Kod=955

More articles from Physics and Astronomy:

nachricht Molecule flash mob
19.01.2017 | Technische Universität Wien

nachricht Magnetic moment of a single antiproton determined with greatest precision ever
19.01.2017 | Johannes Gutenberg-Universität Mainz

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

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

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

New Study Will Help Find the Best Locations for Thermal Power Stations in Iceland

19.01.2017 | Earth Sciences

Not of Divided Mind

19.01.2017 | Life Sciences

Molecule flash mob

19.01.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>