Apparatus measuring relative velocity of movable members includi

Details Apparatus measuring relative velocity of movable members includi Apparatus measuring relative velocity of movable members includi

1976-09-24

1979-11-27

Schaefer, Robert K.

Electricity: motive power systems

Positional servo systems

With stabilizing features

318654, 318660, 318661, G05B 501

Patent

active

RE0301612

ABSTRACT:
A transducer coupled to a motor shaft provides both position and velocity information for use in a closed loop control system. The transducer includes a disk with deposited metallic parallel conductors each conductor carrying current in a direction opposite to the adjacent conductor. Relative movement of one disk with respect to another produces a position signal in a manner well known in the art. However, multiple windings are used to provide multiple position signals displaced in space phase which are then processed by differentiation and commutation to provide a velocity signal used as a control voltage in the control loop. A reference signal is also derived by commutation from the position signal.

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"Inductosyn, Principles & Applications", Farrand Controls, Inc., 11/14/62.

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