Numerical analysis of constrained, time-optimal satellite reorientation

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Previous work on time-optimal satellite slewing maneuvers, with one satellite axis (sensor axis) required to obey multiple path constraints (exclusion from keep-out cones centered on high-intensity astronomical sources) reveals complex motions with no part of the trajectory touching the constraint boundaries (boundary points) or lying along a finite arc of the constraint boundary (boundary arcs). This paper examines four cases in which the sensor axis is either forced to follow a boundary arc, or has initial and final directions that lie on the constraint boundary. Numerical solutions, generated via a Legendre pseudospectral method, show that the forced boundary arcs are suboptimal. Precession created by the control torques, moving the sensor axis away from the constraint boundary, results in faster slewing maneuvers. A two-stage process is proposed for generating optimal solutions in less time, an important consideration for eventual onboard implementation.

Original languageEnglish (US)
Article number769376
JournalMathematical Problems in Engineering
Volume2012
DOIs
StatePublished - Apr 19 2012

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Numerical analysis
Numerical Analysis
Satellites
Sensors
Arc of a curve
Torque control
Cones
Trajectories
Sensor
Pseudospectral Method
Legendre
Torque
Cone
Optimal Solution
Numerical Solution
Trajectory
Path
Motion

All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Engineering(all)

Cite this

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Numerical analysis of constrained, time-optimal satellite reorientation. / Melton, Robert Graham.

In: Mathematical Problems in Engineering, Vol. 2012, 769376, 19.04.2012.

Research output: Contribution to journalArticle

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