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Linear acceleration compensation for multisensor

  • US 4,601,205 A
  • Filed: 11/19/1984
  • Issued: 07/22/1986
  • Est. Priority Date: 11/19/1984
  • Status: Expired due to Term
First Claim
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1. A compensated angular velocity sensing device comprising:

  • a first section, including;

    (a) a hub coaxial with a spin axis;

    (b) at least one pair of piezoelectric bendable crystal members extending radially outwardly from the hub for generating a composite signal, including a desired component corresponding to angular velocity about the spin axis and an undesired component relating to linear acceleration;

    a second section, including;

    (c) a central body coaxial with the spin axis;

    (d) a third piezoelectric bendable crystal member extending outwardly from the central body for developing a signal corresponding to linear acceleration;

    (e) wires interconnecting the three crystal bendable members for bucking out the effects of linear acceleration;

    (f) means mounting the first and second sections in coaxial spaced coupled relation wherein the third crystal member is adjustably angularly positioned relative to the pair of crystal members for adjusting the phase of the second section signal; and

    (g) adjustable weight means connected to an outer end of the third bendable crystal member for determining the amplitude of the signal obtained from the third bendable crystal member.

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