Advertisement

Group Interaction of SEMS Modules at Control of an Adaptive Surface of the Main Dish

  • Andrey Yu. Kuchmin
Chapter
Part of the Studies in Systems, Decision and Control book series (SSDC, volume 174)

Abstract

Problem statement: Further improvement of quality of dish systems (DS) of large radiotelescope (RT) is bound to development of more perfect systems of the active correction of shapes of dishes and their relative position as it is impossible to create the metal construction having the required rigidity. The active correction assumes existence of the composite control system of DS using the modern measurement system with an accuracy λ/10 capable to predict deformations of DS and to develop cooperative control of drives of the DS elements for compensation of these deformations. Therefore SEMS modules can be used for these purposes. There are operating antennas with adaptive reflectors which facets move by means of adaptive platforms of Gough-Stewart, for example, as it is realized in the 500th meter radio telescope of FAST. Also similar systems are used for positioning of dishes of Naismith and counterreflectors (GTM, RT-13, etc.). In addition there is realization of basic fulcrum arrangements on Gough-Stewart’s platform, for example, the massif of anisotropy of relict radiation of Lie Yuanzhe, a radio interferometer from 13 elements (with a possibility of expansion to 19) on the rotary 6-m platform, the MMA project, a space radio telescope of Millimetron, etc. Purpose of research: development of algorithms for control of an adaptive surface of the main dish of the radio telescope consisting of adaptive facets which executive mechanisms are SEMS modules. Results: The algorithm of finding of the approximating paraboloid of the main dish taking into account features of executive mechanisms of SEMS modules, such as restriction for movements of rods of actuators and the line of their action. The algorithm of calculation of lengthenings of actuators as the setting influences in a control system of an adaptive surface is offered. Practical significance: the proposed algorithms for control of adaptive surface can be used in creating modern antennas for compensation of various external influences, such as weight and uneven heating.

Keywords

Radio telescope SEMS Adaptive surface Approximating paraboloid 

References

  1. 1.
    Artemenko, Y.N., Agapov, V.A., Dubarenko, V.V., Kuchmin, A.Y.: Co-operative control of subdish actuators of radio telescope. Informatsionno-upravliaiushchie sistemy 4, 2–9 (2012) (In Russian)Google Scholar
  2. 2.
    Gorodetsky, A.E., Kurbanov, V.G., Tarasova, I.L., Kuchmin, A.Y.: Electric drives of system of logical control of the position of a counterreflector of the space radio telescope. Antenna 4, 52–55 (2011) (In Russian)Google Scholar
  3. 3.
    Gorodetsky, A.E., Kurbanov, V.G., Tarasova, I.L., Kuchmin, A.Y.: Structure of the system of logical control of the position of a counterreflector of the space radio telescope. Antenna 4, 56–59 (2011) (In Russian)Google Scholar
  4. 4.
    Artemenko, Y.N., Gorodetsky, A.E., Dubarenko, V.V., Kuchmin, A.Y., Tarasova, I.L.: Problems of development of space radio-telescope adaptation systems. Informatsionno-upravliaiushchie sistemy 3, 2–8 (2010) (In Russian)Google Scholar
  5. 5.
    Kingsley, J.S., Martin, R.N., Gasho, V.L.: A Hexapod 12 m antenna design concept for the MMA. MMA Memo 263, 7 May 1999Google Scholar
  6. 6.
    Koch, P.M., et al.: The AMiBA Hexapod Telescope Mount. arXiv.org>astro-ph>arXiv:0902.2335v1, 13 Feb 2009.  https://doi.org/10.1088/0004-637x/694/2/1670CrossRefGoogle Scholar
  7. 7.
    Artemenko, Y.N., Gorodetsky, A.E., Dubarenko, V.V., Kuchmin, A.Y., Agapov, V.A.: Analysis of dynamics of automatic control system of space radio-telescope subdish actuators. Informatsionno-upravliaiushchie sistemy 6, 2–6 (2011) (In Russian)Google Scholar
  8. 8.
    Arkhipov, M.Y., Telepnev, P.P., Kuznetsov, D.A.: To a question of numerical modeling of dynamics of a design of the SPEKTR-R spacecraft. In: Lavochkina, S.A. (ed.) The Bulletin of NPO IM, vol. 3, issue 24, pp. 96–99 (2014) (In Russian)Google Scholar
  9. 9.
    Bakhrakh, L.D., Galimov, G.K.: The mirror scanning antennas. In: Theory and Methods of Calculation, 300 pages. Nauka (1981) (In Russian)Google Scholar
  10. 10.
    Vinogradov, I.S.: Radiation cooling of a mirror of the large-size space telescope. In: Radio-astronomical Equipment and Methods. FIAN (Works FIAN; T.228) (2000) (In Russian)Google Scholar
  11. 11.
    Voskresensky, D.I., Kanashchenkov, A.I.: The active phased antenna lattices. Radiotechnika 488 (2004) (In Russian)Google Scholar
  12. 12.
    Gurbanyazov, M.A.: Modern problems of creation of mirror antennas. In: Gurbanyazov, M.A., Kozlov, A.N., Tarasov, V.B., Bakhrakh, L.D. (eds.) AN of Turkmenistan, NPO Solntse, Institute of Mathematics and Mechanics, 416 pages. Ylym, Ashgabat (1992) (In Russian)Google Scholar
  13. 13.
    Kalachev, P.D.: Research of elastic properties of the full-rotary parabolic antenna of the text radio telescope. In: Kalachev, P.D., Dyachkov, V.E. (eds.) Radiotelescopes. Submillimetric and x-ray Relescopes. Works FIAN. T.77. Nauka (1974) (In Russian)Google Scholar
  14. 14.
    Bortsov, Y.A.: The automatic electric drive with elastic links. In: Bortsov, Y.A., Sokolovsky, G.G. (eds.) Energoatomizdat, 288 pages (1992) (In Russian)Google Scholar
  15. 15.
    Sokolovsky, G.G., et al.: Control of the radio telescope electric drive with use of the simplified observer. Izv. LETI, L.: LETI publishing house (344), 23–33 (1984) (In Russian)Google Scholar
  16. 16.
    Belyansky, P.V.: Control of land antennas and radio telescopes. In: Belyansky, P.V., Sergeyev, B.G. (eds.) Soviet Radio, 279 pages (1980) (In Russian)Google Scholar
  17. 17.
    Polyak, V.S.: Evolution of development of precision designs of radio telescopes for radio astronomy, long-distance and satellite space communication. PGS: Magazine. PGS 5, 14 (2005) (In Russian)Google Scholar
  18. 18.
    Dubarenko, V.V., Kuchmin, A.Y.: Identification of complex mechanical systems as objects of control. In: Regional Bulletin of Young Scientists: Collection of Articles of Young Scientists and Graduate Students, vol. 2, pp. 7–9 (2006) (In Russian)Google Scholar
  19. 19.
    Dubarenko, V.V., Kuchmin, A.Y.: An approach to improve the quality of pointing a millimeter wave range large radiotelescope with an adaptive dish system. Informatsionno-upravliaiushchie sistemy 5, 14–19 (2007) (In Russian)Google Scholar
  20. 20.
    Dubarenko, V.V., Kuchmin, A.Y.: Modeling and identification of complex mechanical systems as objects of control. In: Bulletin of Young Scientists: Collection of Articles of Young Scientists and Graduate Students, pp. 23—26 (2007) (In Russian)Google Scholar
  21. 21.
    Dubarenko, V.V., Kuchmin, A.Y., Artemenko, Y.N.: Radiotelescopes; IPMASH RAS, 546 pages. Polytechnical University Publishing House (2014) (In Russian)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Institute of Problems of Mechanical Engineering, Russian Academy of SciencesSt. PetersburgRussia

Personalised recommendations