| 摘要 |
PURPOSE:To obtain accurate and highly resolvable rotating position by simple and easy assembly and adjustment, by generating the secondary signals with an accurate phasediflerence of 90 deg. in a phase adjusting unit and conducting an accurate 90 deg. phase division by the succeeding phase division. CONSTITUTION:Signal SA1=A-phase signal-reversed A-phase signal, signal SB1=B-phase signal-reversed B-phase signal are fed out from adders 81, 82 of a signal detecting unit 8 respectively and from an adder 31 of a signal adjusting circuit 3, a signal AB1=SA1+SB1, and from an adder 32, a signal AB2=SA1-SB1 is obtained. Signal SA1 and SB1 are of the same maximum amplitude,and even if they are of the wave form with the same frequency, but not of the phase difference of 90 deg., signal AB1 and AB2 of the circuit 31 intersect through a right angle with the phase difference of 90 deg.. Consequently, by using signal AB1 and AB2 intersecting correctly through a right angle, a phase dividing signal is available in a phase dividing circuit 4 and using this signal, a rotating signal generating circuit 6 can feed out accurate rotating direction detection signal and rotating position pulse signal.
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