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公开(公告)号：EP3385680A1
公开(公告)日：2018-10-10
申请号：EP18168432.5
申请日：2015-03-09
CPC分类号： G01D5/16 , G01D5/145 , G01D5/244 , G01D5/24438 , G01D5/2451 , G01D5/2452 , G01R33/096 , G01R33/098
摘要： A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of 1/2n (n is a prime number of 3 or more) of a wavelength λ' of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(λ'/2)×(1/3+1/5+1/7+... 1/(2m+1)).
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公开(公告)号：EP2955487B1
公开(公告)日：2018-11-21
申请号：EP15170936.7
申请日：2015-06-08
CPC分类号： G01D5/16 , G01D5/145 , G01D5/24438
摘要： A highly accurate position detection is performed by the use of a magneto-resistance effect element such as a TMR element. At least two magnetic detecting elements 21-1 and 21-2 are provided to detect leakage magnetism from a scale 11 having a magnetic signal magnetically recorded thereon, and to output a recording signal of a position where the leakage magnetism is detected. The at least two magnetic detecting elements 21-1 and 21-2 are disposed side by side in a direction y perpendicular to a direction x of scanning the scale 11 and also disposed at positions approximately equidistant from a magnetic signal recording surface of the scale 11.
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公开(公告)号：EP2918978A1
公开(公告)日：2015-09-16
申请号：EP15158138.6
申请日：2015-03-09
IPC分类号： G01D5/244
CPC分类号： G01D5/16 , G01D5/145 , G01D5/244 , G01D5/24438 , G01D5/2451 , G01D5/2452 , G01R33/096 , G01R33/098
摘要： A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of 1/2n (n is a prime number of 3 or more) of a wavelength λ' of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L= (λ'/2) × (1/3+1/5+1/7+... 1/(2m+1)).
摘要翻译： 磁检测元件从其上记录具有恒定周期的磁信号的标尺检测漏磁，并且检测标尺与磁检测元件之间的相对位置。 磁性检测元件沿着磁性信号相对于标尺的检测方向以信号输出的波长λ'的间距为1 / 2n（n为3或更大的素数）的图案布置 由元素。 另外，作为消除m个奇数次高次谐波的模式，将2个磁检测元件的m次幂配置在检测方向最远的磁检测元件的间距L由L =（ λ'/ 2）×（1/3 + 1/5 + 1/7 + ... 1 /（2m + 1））。
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公开(公告)号：EP2955487A1
公开(公告)日：2015-12-16
申请号：EP15170936.7
申请日：2015-06-08
CPC分类号： G01D5/16 , G01D5/145 , G01D5/24438
摘要： A highly accurate position detection is performed by the use of a magneto-resistance effect element such as a TMR element.
At least two magnetic detecting elements 21-1 and 21-2 are provided to detect leakage magnetism from a scale 11 having a magnetic signal magnetically recorded thereon, and to output a recording signal of a position where the leakage magnetism is detected. The at least two magnetic detecting elements 21-1 and 21-2 are disposed side by side in a direction y perpendicular to a direction x of scanning the scale 11 and also disposed at positions approximately equidistant from a magnetic signal recording surface of the scale 11.摘要翻译： 通过使用诸如TMR元件的磁阻效应元件来执行高精度的位置检测。 提供至少两个磁性检测元件21-1和21-2来检测来自具有磁性记录在其上的磁信号的标尺11的泄漏磁性，并输出检测到漏磁的位置的记录信号。 至少两个磁检测元件21-1和21-2沿垂直于扫描标尺11的方向x的方向Y并排设置，并且还设置在与刻度尺11的磁信号记录表面大致等距的位置 。
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