Design of a Small-Aperture Steering Mirror for High-Bandwidth Acquisition and Tracking

Abstract

The High-Bandwidth Steering Mirror (HBSM) prototype is the product of a research program to develop a high-bandwidth, low angular range, two- dimensional beam steerer used in optomechanical pointing, acquisition, and tracking systems. This research centered around the optimization of a beam- steering mechanism comprising a mirror, restoring flexure, actuators, position sensors, and encompassing housing. Various design trade-offs and manufacturing issues involved in building the prototype are discussed, and the resulting performance data are presented. The resulting HBSM design allows integration with a simple closed-loop control scheme. The mirror/controller has a closed- loop bandwidth of 10kHz, and 1 degree peak-to-peak stroke (mirror normal) at low frequencies. This increased bandwidth yields excellent disturbance rejection in the 10- to 1000-Hz, frequency band and enables the generation of faster scan patterns.

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Document Details

Document Type
Technical Report
Publication Date
Oct 26, 1990
Accession Number
ADA230357

Entities

People

  • Gregory C. Loney

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Acquisition
  • Actuators
  • Bandwidth
  • Beam Steering
  • Control Systems
  • Detectors
  • Eddy Currents
  • Electronics
  • Frequency
  • Frequency Bands
  • Frequency Response
  • Geometry
  • Manufacturing
  • Materials
  • Prototypes
  • Rejection
  • Steering

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Phased Array Antenna Design.
  • Robotics and Automation.