Analog torque rebalance loop for a tuned rotor gyroscope

Details Analog torque rebalance loop for a tuned rotor gyroscope Analog torque rebalance loop for a tuned rotor gyroscope

1990-09-28

1992-08-18

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

74 54, G01P 902

Patent

active

051388839

ABSTRACT:
A rebalance loop for controlling a dry tuned rotor gyroscope having a rotor moveable about two orthogonal axes, a first pickoff associated with one of the axes for producing an electrical error signal when a rate is applied to one of the axes, a second pickoff associated with the other of the axes for producing an electrical error signal when a rate is applied to that axis and a pair of torquer coil adapted to receive electrical control signals from the rebalance loop and apply torques to the rotor about the two axes for correcting errors detected by the pickoffs. The rebalance loop comprises a first direct-axis loop which receives an error signal produced by one of the pickoffs and produces a first amplified error signal, a second direct-axis loop which receives an error signal produced by the other of the pickoffs and produces a second amplified error signal, a first cross-axis loop for amplifying the error signal produced by the one of the pickoffs and adapted to produce a first correction signal, a second cross-axis loop for amplifying the error signal produced by the other of the pickoffs and adapted to produce a second correction signal, a first summing junction for adding the first correction signal to the second amplified error signal for producing a first torque correction signal, and a second summing junction for adding the second correction signal to the first amplified error signal for producing a second torque correction signal.

REFERENCES:
patent: 4986139 (1991-01-01), Rennie

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