ABSOLUTE POSITION ENCODER

专利名称：ABSOLUTE POSITION ENCODER

发明人：TANIGUCHI, Mitsuyuki F. Manshon Hasimomi

8-205

申请号：EP89905772.3申请日：19890522公开号：EP0369031B1公开日：19930908

摘要：A difference operation unit (6) calculates a dif- ferenceΔCi between the data ofupper six bits of the interpolation data (D4) in a lower channel (e.g., a 4096λ channel)having a large number of cycles and the data of lower six bits of the interpolation data(D3) in an upper channel (e.g., a 256λchannel) having a small number of cycles. Acorrected data operation unit (8) finds a corrected data C1 such that the differencebecomes smaller than a predetermined value or becomes minimal. Using the correcteddata Ci, the angle data correction units (3a to 3c) correct the interpolation data (D3) in theneighboring upper channel, and the upper four bits of interpolation data (D4' to D1) ofthe channels after corrected are synthesized in order to detect an absolute position ofthe rotary shaft.

申请人：FANUC LTD.

地址：3580, SHIBOKUSA AZA-KOMANBA, OSHINO-MURA; MINAMITSURU-GUN,YAMANASHI 401-05

代理机构：Billington, Lawrence Emlyn

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