R/d converter and angle detecting apparatus

Details R/d converter and angle detecting apparatus R/d converter and angle detecting apparatus

G - Physics

01

D

G01D 5/00 (2006.01) G01D 5/12 (2006.01) H02K 11/02 (2006.01)

Patent

CA 2646213

A band elimination filter 35 that eliminates or reduces a low frequency noise superposed on resolver signals S1 and S2 is provided between a synchronous detection circuit 34 that performs synchronous detection by referring to an excitation signal and a controller 36 that controls a digital angle output .phi. to make a deviation (sin (.theta. - .phi.), which is the output of the synchronous detection circuit, zero.

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