公开(公告)号：US10480963B2

公开(公告)日：2019-11-19

申请号：US15622278

申请日：2017-06-14

Applicant: HIWIN MIKROSYSTEM CORP.

Inventor： Heng-Sheng Hsiao ,  Chi-Yuan Cheng ,  Cheng-Kuo Sung ,  Tsung-Shune Chin ,  Sheng-Ching Wang ,  Jen-Yuan Chang

IPC: G01D5/245 ,  G01D5/16

Abstract: An absolute position readout apparatus includes an encoder device and a readout device. The readout device includes multiple first and second magnetic sensing components that correspond to an absolute track of the encoder device, and a third magnetic sensing component and a fourth magnetic sensing components that correspond to an incremental track of the encoder device. The third magnetic sensing component is configured to be spaced apart from the fourth magnetic sensing component by a specific distance, so as to prevent misreading of absolute position information from the first or second magnetic sensing components being at positions corresponding to boundaries between adjacent magnetized regions of the absolute track.