Gyroscope inertia wheel position detection - employs bridge connected detector coils with residual voltage compensation permitting balancing of bridge

摘要

Detectors comprising electrical windings on magnetic cores are used to detect position of gyroscope inertia wheel w.r.t. the support structure. Connecting detectors in a bridge circuit with compensating voltages from a transformer enables the bridge to be balanced. The electrical windings (7) of detector coils (16) sensing position of a gyroscope inertia wheel in two axes (x, y) are connected in two bridge circuits each with a potentiometer (21). A current source (30) supplies the bridge circuits and transformer (22) winding (29). Two measuring circuits (31) sense detector voltages and the residual voltages from the bridge arms are compensated for by equivalent voltages by opposite phase from the potentiometers.