GRAVITATIONAL VARIOMETER Russian patent published in 2001 - IPC

FIELD: measurement technology, measurement of gradients of gravitational field. SUBSTANCE: structure of gravitational variometer includes rocking shaft with weights suspended in air-tight body, transducer of angular movement of shaft with reference to body connected to input of electron unit of servo system, electrostatic torque generators whose rotor electrodes are positioned in symmetry on rocking shaft, pair of identical stator electrodes interacting with each of them anchored on body and connected to output of electron unit. Electrodes on rocking shaft and body come in the form of segments of cylinders. Each rotor electrode has pair of identical segments of cylinders so located on rocking shaft that central angle of half-planes passing through axes of cylinders differs from central angle of half-planes passing through axes of cylinders of stator by computed value determined by distance between axis of suspension of rocking shaft and axis of stator, radii of cylinders of rotor and stator and gap between cylindrical surfaces of segments of rotor and stator oriented in opposition. In this case output of electron unit has two channels, each being connected to segments of cylinders of stator whose axes lie in same plane with symmetry axis of rocking shaft. Gravitational variometer incorporates two pairs of torque generators whose symmetry planes are mutually perpendicular and are connected in parallel to output of electron unit. EFFECT: increased precision and widened measurement range. 2 cl, 2 dwg