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Control circuit for accelerometer

  • US 4,336,718 A
  • Filed: 09/08/1980
  • Issued: 06/29/1982
  • Est. Priority Date: 09/08/1980
  • Status: Expired due to Term
First Claim
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1. An accelerometer adapted to measure magnitude and direction of an acceleration force externally applied thereto and comprising:

  • an accelerometer housing assembly;

    indicating means pendulously supported within said housing assembly for indicating, via a positional displacement thereof, the occurrence of said acceleration force, wherein said indicating means is pendulously supported at a null position in the absence of said acceleration force;

    detection circuit means for detecting said positional displacement of said indicating means and for generating a restoring signal representative of the magnitude and direction of said positional displacement;

    restoring means coupled to said detection circuit means and responsive to said restoring signal for restoring said indicating means to said null position;

    output circuit means electrically coupled to said restoring means and comprising an output terminal for generating an output signal thereat indicative of the magnitude and direction of said externally applied acceleration force; and

    characterized in thatsaid accelerometer further comprises bias compensation circuit means connected to said output terminal and selectively adjustable to apply a correction signal to said output circuit means, wherein said correction signal is of a substantially equal magnitude and opposite in direction to components of said output signal due to static bias factors.

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