Digital rotation detecting apparatus

Details Digital rotation detecting apparatus Digital rotation detecting apparatus

G - Physics

01

B

340/135.5

G01B 7/30 (2006.01) G01D 5/247 (2006.01) G01P 3/44 (2006.01) G01P 3/489 (2006.01)

Patent

CA 1270046

ABSTRACT OF THE DISCLOSURE A digital rotation detecting apparatus of the invention, which is adapted to detect a phase angle .THETA.r of a resolver by using a multiple frequency clock of the excitation frequency for the resolver and a clock of a voltage control oscillator, is detectable of an instantaneous value of the phase angle .THETA.r at a desired time without delay, is also detectable directly of the rotational speed, and requires no low frequency excitation because the excitation fre- quency for the resolver needs only to be constant.

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