Modeling and Control of Antennas and Telescopes

  • Wodek Gawronski

Part of the Mechanical Engineering Series book series (MES)

Table of contents

  1. Front Matter
    Pages i-xv
  2. Introduction

    1. Front Matter
      Pages 1-1
    2. Wodek Gawronski
      Pages 1-8
  3. Modeling

    1. Front Matter
      Pages 9-9
    2. Wodek Gawronski
      Pages 11-30
    3. Wodek Gawronski
      Pages 31-44
    4. Wodek Gawronski
      Pages 45-50
    5. Wodek Gawronski
      Pages 51-70
  4. Control

    1. Front Matter
      Pages 71-71
    2. Wodek Gawronski
      Pages 73-79
    3. Wodek Gawronski
      Pages 81-93
    4. Wodek Gawronski
      Pages 95-134
    5. Wodek Gawronski
      Pages 135-143
    6. Wodek Gawronski
      Pages 145-155
    7. Wodek Gawronski
      Pages 157-182
    8. Wodek Gawronski
      Pages 183-209
    9. Wodek Gawronski
      Pages 211-222
  5. Back Matter
    Pages 223-225

About this book

Introduction

Modeling and Control of Antennas and Telescopes presents the author’s research and field experience in the area of antenna modeling, dynamics, and control. The required spacecraft tracking accuracy of 1 mdeg was the impetus for the new approaches to the antenna controls that use model based controllers (LQG and H¥ ). Consequently, modeling also required a new approach using system identification techniques. Most of the material presented is new in the telescope industry. The methods have been not only analyzed and tested, but actually implemented, giving confidence in the final result, which is significantly increased antenna pointing accuracy.

The author explains two different approaches to telescope modeling: analytical and experimental. The analytical approach combines the structural and drive model, using Matlab and Simulink. The experimental, uses the test data to obtain the equations of the antenna model. Both models are excessively large and the model reduction techniques included make the model size small enough for the controller design purposes. The book also covers the wind models based on the wind tunnel data (steady-state), and on the field data (gusts) since wind gusts are the main antenna disturbance.

The book shows the PI and feedforward controller tuning and their performance as a benchmark for measuring the pointing improvement when the LQG and H¥ are implemented. The properties, performance, and tuning of the LQG and H¥ are also presented. The material explains the nonlinear control issues such as velocity and acceleration limits, friction, and backlash. It also covers RF beam control techniques (scanning and monopulse), and the open loop control of the track level unevenness.

Modeling and Control of Antennas and Telescopes serves as a useful reference for students and engineers in the area of antenna modeling, dynamics, and control.

Keywords

Gawronski Matlab RF beam pointing Radar Radiotelescopes Simulink antenna/telescope control system antenna/telescope modeling control theory design modeling monopulse and conscan radar modeling structural dynamics

Authors and affiliations

  • Wodek Gawronski
    • 1
  1. 1.California Institute of TechnologyJet Propulsion LaboratoryPasedenaUSA

Bibliographic information

  • DOI https://doi.org/10.1007/978-0-387-78793-0
  • Copyright Information Springer-Verlag US 2008
  • Publisher Name Springer, Boston, MA
  • eBook Packages Engineering
  • Print ISBN 978-0-387-78792-3
  • Online ISBN 978-0-387-78793-0
  • Series Print ISSN 0941-5122
  • Series Online ISSN 2192-063X
  • About this book