Servoed linear accelerometer

Details Servoed linear accelerometer Servoed linear accelerometer

G - Physics

01

P

73/42

G01P 3/50 (2006.01) G01P 15/13 (2006.01)

Patent

CA 1078210

ABSTRACT OF THE DISCLOSURE In order to facilitate construction of a compact, lightweight servoed accelerometer with capacitive pick-off, a one-piece support frame, adapted to be inserted within a cylindrical housing, is used to support a pair of capacitor plates and a lightweight longitudinally reinforced pendulum or seis- mic mass having a paddle on one end. The paddle is positioned midway between the capacitor plates, thereby forming a pair of capacitors each having a capacitance on the order of 2 to 4 picofarads. Attached to the pendulum is an axle which in turn is supported between two flexures by means of jeweled pivoted bearings. The ends of the flexures are rigidly secured to the support frame, and a desired pressure of the bearings against the axle is maintained by means of adjustment screws. Also attached to the pendulum is a torque coil which interacts with a magnetic assembly, secured to the support frame, to restore the paddle to the midpoint between the capacitor plates when the pendulum has been subjected to an acceleration force. Secured to the support frame above and parallel to the pendulum is a thick film circuit board con- taining an integrated circuit and associated hybrid elements for applying time varying voltages to each capacitor so that the currents flowing through the capacitors can be used as a measure of the difference in capacitance due to deflection of the paddle; and in response thereto, generate sufficient current in the torque coil to restore the paddle to the midway point between the capacitor plates. The circuitry also includes an output circuit having a servo-compensated network for applying a restoring current to the torque coil wherein the gain and frequency characteristics of the servo system are independ- ent of any impedance used to measure the restoring current.

274674

Affiliated with

Also associated with

Rating

Servoed linear accelerometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Servoed linear accelerometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servoed linear accelerometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-399443