Electronic tachometer circuit

An electronic tachometer circuit uses a cyclically discontinuous position error signal PES to derive a velocity signal. The signal PES is differentiated by a narrow bandwidth high pass filter in a position channel 27. Motor current signals are used to derive a current reference signal by a low pass...

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Bibliographische Detailangaben
Hauptverfasser:	BRADLEY, EDWARD FRANKLIN, MUELLER, FRANCIS EDWARD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROLLING INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES TESTING
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Beschreibung
Zusammenfassung:	An electronic tachometer circuit uses a cyclically discontinuous position error signal PES to derive a velocity signal. The signal PES is differentiated by a narrow bandwidth high pass filter in a position channel 27. Motor current signals are used to derive a current reference signal by a low pass filter in a current channel 29. Discontinuous portions of the signal PES are detected by a level detector 42 which then activates a track and fill circuit 32 to provide a fill-in signal from the current reference signal to the position channel 27.