Servo amplifier providing current torque and dynamic parameters
AssigneeSchaevitz Engineering
InventorErnest D. D. Schmidt
Life of this patent
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Abstract
A servo amplifier system includes first and second operational amplifiers, with the second amplifier having a low output impedance. A torque coil is connected directly from the output circuit of the first amplifier to the input circuit of the second amplifier free of any impedance elements which would tend to make the torque coil subject to frequency response variations. Various circuits are provided to feed back error signals from the output circuit of the second amplifier to the input circuit of the first amplifier. A test signal may be connected across torque coil to test the response of the accelerometer including the torque coil.
Claims5
In combination with a position detector for producing electrical signals corresponding to positions of a torque coil subject to movements resulting from acceleration forces which result in current being induced therein, a servo amplifier system for producing error signals for application to said torque coil to counteract the movements resulting from said acceleration forces, comprising:
- a. a first amplifier having an input circuit;
- b. means for applying said electrical signals from said position detector to said input circuit of said first amplifier;
- c. a second amplifier having an input circuit and a low impedance output circuit;
- d. means for connecting said torque coil from said first amplifier to said second amplifier free of any load impedance;
- e. a feedback network connected from the output circuit of said second amplifier to the input circuit of said first amplifier;
- f. utilization means connected to the output circuit of said second amplifier.
Dependencies are inferred from the claim text.