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Self-calibrating inertial measurement system method and apparatus

  • US 6,778,924 B2
  • Filed: 11/06/2001
  • Issued: 08/17/2004
  • Est. Priority Date: 11/06/2001
  • Status: Expired due to Fees
First Claim
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1. Calibration test apparatus for use with a plurality of inertial measurement units to be mounted on a multi axis rate table and subject to various known environmental conditions to determine any differences between the outputs of the inertial measurement units and the known environmental conditions and to compute a plurality of correction coefficients to be used to modify the outputs to achieve greater accuracy, comprising:

  • a plurality of processors, wherein each of the plurality of processors is connected internally to a respective inertial measurement unit and programmed to have the known environmental conditions;

    a connector that supplies the outputs of each inertial measurement unit to the processor located within the inertial measurement unit that supplied the outputs, wherein the outputs do not pass through slip rings; and

    the plurality of processors are operable to compare the known environmental conditions with the outputs and compute the plurality of correction coefficients.

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