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公开(公告)号：US20140097833A1
公开(公告)日：2014-04-10
申请号：US14045384
申请日：2013-10-03
IPC分类号： G01D9/10
CPC分类号： G01D9/10 , G01D5/2458
摘要： To provide a position detecting device capable of easily obtaining a stable recording state without using “absence of record” upon reproducing a binary signal. The position detecting device is provided with a scale unit 10 having an absolute track 11 in which non-repetitive signals composed of binary information are recorded and an incremental track 12 in which a signal for specifying a reading section within a section of information of 1 unit for the non-repetitive signal is recorded; and within a reading section in a section of information of 1 unit for the repetitive signal specified based upon the signal recorded in the incremental track 12, each 1 unit information of the non-repetitive signal is read from the absolute track 11 by an absolute pattern detection head 21. In the absolute track 11, each 1 unit information is recorded in an effective section longer than the reading section within the section of information of 1 unit for the non-repetitive signal.
摘要翻译： 提供一种能够在再现二进制信号时不使用“不存在记录”的情况下容易地获得稳定的记录状态的位置检测装置。 位置检测装置设置有刻度单元10，其具有绝对轨道11，其中记录有二进制信息组成的非重复信号;以及增量轨道12，其中用于指定1单位信息的部分内的读取部分的信号 记录非重复信号; 并且在基于记录在增量轨道12中的信号指定的重复信号的1个单位的信息部分的读取部分内的读取部分中，通过绝对模式从绝对轨道11读取非重复信号的每个1个单位信息 检测头21.在绝对轨道11中，对于非重复信号，每1个单位信息被记录在比单元的信息部分内的读取部分更长的有效部分中。
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公开(公告)号：US09322677B2
公开(公告)日：2016-04-26
申请号：US14045384
申请日：2013-10-03
CPC分类号： G01D9/10 , G01D5/2458
摘要： A position detecting device that includes a recording medium provided with a first recording track in which a non-repetitive signal composed of binary information is recorded and a second recording track in which a signal for specifying a reading section within a section of information of 1 unit for the non-repetitive signal and information reading means that includes a first detection head and a second detection head and for reading each 1 unit information of the non-repetitive signal from the first recording track by using the first detection head in the reading section within a section of information of 1 unit for the non-repetitive signal specified based upon the signal recorded in the second recording track by the second detection head.
摘要翻译： 一种位置检测装置，包括：记录媒体，记录媒体记录着由二进制信息构成的非重复信号的第一记录轨道;以及第二记录轨道，在该第二记录轨道中，指定1个单位的信息部分内的读取部分的信号 对于包括第一检测头和第二检测头的非重复信号和信息读取装置，用于通过使用读取部分中的第一检测头从第一记录轨道读取非重复信号的每个1个单位信息， 基于由第二检测头记录在第二记录轨道中的信号指定的非重复信号的1个单位的信息的一部分。
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公开(公告)号：US10048093B2
公开(公告)日：2018-08-14
申请号：US15600058
申请日：2017-05-19
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 ½n (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)×(⅓+⅕+ 1/7+ . . . 1/(2m+1)).
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公开(公告)号：US10024691B2
公开(公告)日：2018-07-17
申请号：US15599777
申请日：2017-05-19
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 ½n (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)×(⅓+⅕+ 1/7+ . . . 1/(2m+1)).
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公开(公告)号：US09733317B2
公开(公告)日：2017-08-15
申请号：US14640752
申请日：2015-03-06
IPC分类号： G01B7/00 , G01R33/025 , G01R33/09 , G01D5/244 , G01D5/245
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：US09719805B2
公开(公告)日：2017-08-01
申请号：US14731079
申请日：2015-06-04
发明人： Masaaki Kusumi , Yusuke Takei , Shigeru Ishimoto
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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