FIELD: physics.
SUBSTANCE: ballistic gravimeter has a proofmass 1 with an optical angle reflector 2, a vacuum chamber 3 and an optical radiator 4. At the bottom 5 of the vacuum chamber 3 on dampers 6 there is a solid force plate 7 on which there is a coil 8 with a winding 9, guide elements in form of upright posts 10 with a circular cross-section and horizontal supports 11 with vertical sections 12. An armature 13 is connected to a force disc 14 in which are ordered three openings 15 with bearings 16 which grip the upright posts 10. A guide cone 17 is joined to the bottom of the proofmass 1. An induction-dynamic type electromechanical drive has a movable armature 13 and a fixed winding 9 connected to a capacitive energy storage by two antiparallel-connected control thyristors.
EFFECT: high accuracy of a small-size ballistic gravimeter having good drive adjusting characteristics.
10 cl, 15 dwg
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