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Process and a device for controlling the attitude of a three-axis stabilized spinning spacecraft

  • US 5,597,143 A
  • Filed: 06/10/1994
  • Issued: 01/28/1997
  • Est. Priority Date: 09/06/1991
  • Status: Expired due to Term
First Claim
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1. A process for controlling the attitude of a three-axis stabilized, spacecraft having a stored spin to maintain a spin direction of the spacecraft in inertial space and limit a nutation amplitude of the spacecraft while using at least one dead zone element, comprising:

  • continuously checking to determine if predetermined threshold values for deviation of the spin direction from a desired orientation and for nutation amplitude are exceeded using separate dead zone elements to define each of the predetermined threshold value; and

    triggering control interventions, only for reduction of nutation, even when the spinning direction is within a range limited by the predetermined threshold values.

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