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 Major discovery in controlling quantum states of single atoms
20.02.2018 | Institute for Basic Science

nachricht Observing and controlling ultrafast processes with attosecond resolution
20.02.2018 | Technische Universität München

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: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

'Lipid asymmetry' plays key role in activating immune cells

20.02.2018 | Life Sciences

MRI technique differentiates benign breast lesions from malignancies

20.02.2018 | Medical Engineering

Major discovery in controlling quantum states of single atoms

20.02.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>