TODAY’S PATENT – THREE-AXIS ACCELEROMETER HAVING DYNAMIC BIAS COMPENSATION

The THREE-AXIS ACCELEROMETER HAVING DYNAMIC BIAS COMPENSATION was invented by Sidney G. Shutt (Brea, CA) on 8^th of February 1983, bearing the patent number US4372162A.

The present invention relates generally to accelerometers and more particularly pertains to accelerometers in which a proof mass is constrained by a combination of electromagnetic and elastic supports.

A proof mass for an accelerometer is electromagnetically constrained in three orthogonal directions. An array of filaments forms an elastic suspension for the proof mass to constrain it in the remaining degrees of freedom. The resulting instrument has the potential for low cost and high-accuracy operation over a wide temperature range without the use of temperature controls. Means are provided in the accelerometer for dynamically nulling the bias. Yet another object is to provide an accelerometer which is suitable for use in a strapdown inertial navigation system.