Resolver excitation circuit

Details Resolver excitation circuit Resolver excitation circuit

1989-03-20

1990-11-20

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

Phase variation

318661, 318605, 340870370, G08C 1916, G05B 1931

Patent

active

049721860

ABSTRACT:
A resolver driver circuit uses sine and cosine values stored in a read only memory to generate sine and cosine waveforms by sequentially reading the stored values and passing them through a clocked data latch to a digital-to-analog converter. The output of the digital-to-analog converter is filtered to remove quantization error. Phase error produced by the filtering and other sources is detected by timing the zero crossings of the sine and cosine waveforms and comparing them to a master synchronization signal. Phase error is corrected by controlling the timing of the latch which passes data to the digital-to-analog converter.

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