MAGNETIC DRUM AND MAGNETIC ENCODER HAVING SAME

A magnetic drum, comprising a support ring (b), and a first permanent magnet ring (1) and a second permanent magnet ring (2) that are sleeved on the outer circumferential side of the support ring (b), wherein the first permanent magnet ring (1) and the second permanent magnet ring (2) are sequential...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WANG, Yan, WANG, Xin, CHENG, Zoucheng, CHENG, Wenhao, CHENG, Muyang, MENG, Huaiyin
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	A magnetic drum, comprising a support ring (b), and a first permanent magnet ring (1) and a second permanent magnet ring (2) that are sleeved on the outer circumferential side of the support ring (b), wherein the first permanent magnet ring (1) and the second permanent magnet ring (2) are sequentially arranged along the axial direction of the support ring (b); the first permanent magnet ring (1) and the second permanent magnet ring (2) are both unipolar magnet rings and are opposite in polarity; first protrusions (11) and first recesses (12) that are alternated along the circumferential direction of the first permanent magnet ring (1) are formed on the outer circumferential wall of the first permanent magnet ring (1); and second protrusions (21) and second recesses (22) that are alternated along the circumferential direction of the second permanent magnet ring (2) are formed on the outer circumferential wall of the second permanent magnet ring (2). N/S alternating magnetic signals can be directly obtained at