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公开(公告)号：US06879405B2
公开(公告)日：2005-04-12
申请号：US10705429
申请日：2003-11-10
申请人： Hideaki Tamiya , Kayoko Taniguchi , Eiko Kanbara
发明人： Hideaki Tamiya , Kayoko Taniguchi , Eiko Kanbara
CPC分类号： G01D5/366 , G01D5/34792
摘要： A displacement pickup is provided which comprising a scale (12) having defined thereon a first area (12a) where positional information is recorded with a predetermined pitch and a second area (12b) where positional information is recorded with a pitch different from that in the first area (12a), a first reader (10) which reads the positional information recorded in the first area (12a), a first phase detector (14) which detects a first phase on the basis of the positional information read by the first reader (10), a second reader (11) which reads the positional information recorded in the second area (12b), a second phase detector (15) which detects a second phase on the basis of the positional information read by the second reader (11), a phase comparator (16) which makes a comparison between the first and second phases, and an origin signal selector (18) which produce a plurality of signals according to the result of comparison and selects an arbitrary one of the plurality of signals on the basis of the positional information read by the first reader (10).
摘要翻译： 提供一种位移拾取器，其包括其上限定有以预定间距记录位置信息的第一区域（12a）的刻度（12），以及第二区域（12b），其中位置信息以不同于 第一区域（12a），读取记录在第一区域（12a）中的位置信息的第一读取器（10），第一相位检测器（14），其基于由第一读取器读取的位置信息检测第一相位 （10），读取记录在第二区域（12b）中的位置信息的第二读取器（11），第二相位检测器（15），其基于由第二读取器（11）读取的位置信息来检测第二相位 ），比较第一和第二相位的相位比较器（16）和根据比较结果产生多个信号的原点信号选择器（18），并选择多个信号中的任意一个 基于由第一读取器（10）读取的位置信息。
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公开(公告)号：US07238931B2
公开(公告)日：2007-07-03
申请号：US11109911
申请日：2005-04-19
申请人： Nobuo Nabeshima , Kayoko Taniguchi , Eiko Kanbara
发明人： Nobuo Nabeshima , Kayoko Taniguchi , Eiko Kanbara
IPC分类号： G01D5/245
CPC分类号： G05B19/402 , G03F7/70775 , G05B2219/37112 , G05B2219/45031
摘要： The present invention provides a displacement detection apparatus uses short scales and can provide a long measurable range comparable to a single long scale with a short bed length. The displacement detection apparatus includes a scale, a first head and a second head adapted to detect periodic analog signals of a plurality of different types, a first processing section and a second processing section that detects the first differential value and the second differential value between the immediately preceding positional data and the current positional data obtained by sampling the periodic analog signals of a plurality of different types, a switching section that selectively switches from the first differential value to the second differential value or vice versa, a scale position detection section that detects the scale getting to a predetermined position relative to the first head or a predetermined position relative to the second head, a switching control section that causes the switching section to switch from either of the differential values to the other in response to the detection of the scale getting to the predetermined position, and an addition section that adds the first differential value or the second differential value selectively switched by the switching control section and outputting it as positional information.
摘要翻译： 本发明提供一种位移检测装置，其使用短尺度并且可以提供与具有短床长度的单个长尺度相当的长的可测量范围。 位移检测装置包括：秤，第一头和第二头，适于检测多种不同类型的周期性模拟信号;第一处理部和第二处理部，其检测第一差分值和第二差分值 紧接在前面的位置数据和通过对多种不同类型的周期性模拟信号进行采样而获得的当前位置数据之间，切换部分选择性地从第一差分值切换到第二差分值，反之亦然;标度位置检测部分， 比例尺相对于第一头部到相对于第一头部的预定位置或相对于第二头部的预定位置;切换控制部分，其使得切换部分响应于比例尺的检测而从任一个差分值切换到另一个 到达预定位置，以及加法部分t 帽子添加由切换控制部选择性地切换的第一差分值或第二差分值，并将其作为位置信息输出。
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公开(公告)号：US20050236558A1
公开(公告)日：2005-10-27
申请号：US11109911
申请日：2005-04-19
申请人： Nobuo Nabeshima , Kayoko Taniguchi , Eiko Kanbara
发明人： Nobuo Nabeshima , Kayoko Taniguchi , Eiko Kanbara
CPC分类号： G05B19/402 , G03F7/70775 , G05B2219/37112 , G05B2219/45031
摘要： The present invention provides a displacement detection apparatus uses short scales and can provide a long measurable range comparable to a single long scale with a short bed length. The displacement detection apparatus includes a scale, a first head and a second head adapted to detect periodic analog signals of a plurality of different types, a first processing section and a second processing section that detects the first differential value and the second differential value between the immediately preceding positional data and the current positional data obtained by sampling the periodic analog signals of a plurality of different types, a switching section that selectively switches from the first differential value to the second differential value or vice versa, a scale position detection section that detects the scale getting to a predetermined position relative to the first head or a predetermined position relative to the second head, a switching control section that causes the switching section to switch from either of the differential values to the other in response to the detection of the scale getting to the predetermined position, and an addition section that adds the first differential value or the second differential value selectively switched by the switching control section and outputting it as positional information.
摘要翻译： 本发明提供一种位移检测装置，其使用短尺度并且可以提供与具有短床长度的单个长尺度相当的长的可测量范围。 位移检测装置包括：秤，第一头和第二头，适于检测多种不同类型的周期性模拟信号;第一处理部和第二处理部，其检测第一差分值和第二差分值 紧接在前面的位置数据和通过对多种不同类型的周期性模拟信号进行采样而获得的当前位置数据之间，切换部分选择性地从第一差分值切换到第二差分值，反之亦然;标度位置检测部分， 比例尺相对于第一头部到相对于第一头部的预定位置或相对于第二头部的预定位置;切换控制部分，其使得切换部分响应于比例尺的检测而从任一个差分值切换到另一个 到达预定位置，以及加法部分t 帽子添加由切换控制部选择性地切换的第一差分值或第二差分值，并将其作为位置信息输出。
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