Angle digitizing method

Details Angle digitizing method Angle digitizing method

1981-06-11

1983-09-20

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

324 83Q, 324DIG1, G01R 2500

Patent

active

044058950

ABSTRACT:
An angle digitizer receives signal representing the sine and cosine of the angle to be digitized. The voltages are fed to orthogonal pairs of input terminals. Between each two input terminals is a set of equivalued resistors to form a resistor ring. At the junction of each pair of resistors is an output terminal. Each pair of output terminals is connected to the input terminals of a signal amplitude comparator which compares the magnitude of the signals at its inputs to give a digital signal in accordance with which is greater. For each comparator the output terminals of the resistor ring are selected such that the signals are in a direct antiphase relationship. An odd set of the comparators is activated first followed by the activation of the even set. Thereafter the binary output values of the comparators are interleaved to form a full digital word which is then tested to see if it is a valid digital word.

REFERENCES:
patent: 4277748 (1981-07-01), Gerst et al.

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