Clock generation circuit, analog-digital angle converter...

Details Clock generation circuit, analog-digital angle converter... Clock generation circuit, analog-digital angle converter...

2009-01-09

2010-12-28

Aurora, Reena (Department: 2858)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

07859254

ABSTRACT:
Two-phase resolver signals output from a rotation angle detector are squared by first and second squaring circuits. The squared signals are added by an adding circuit. The DC component of the output signal from the adding circuit is removed by a filter. The output signal from the filter is compared with a reference potential by a comparator to generate a rectangular-wave signal. The phase of the rectangular-wave signal is corrected a phase shifter. The frequency of the output signal from the phase shifter is divided by 2 by a frequency dividing circuit in synchronization with an excitation signal supplied to the rotation angle detector to generate a synchronous clock.

REFERENCES:
patent: 09000102.5 (2009-05-01), None
patent: 05-172505 (1993-07-01), None
patent: 2008-039583 (2008-02-01), None

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