ROTATION DETECTOR
PROBLEM TO BE SOLVED: To provide a rotation detector capable of improving detection accuracy of a rotation reference position of a rotor.SOLUTION: A first magnetic resistance element pair 23 output a waveform signal on the basis of change of a resistance value when a first magnetic resistance elemen...
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| creator | SUMIYA KAZUYOSHI |
| description | PROBLEM TO BE SOLVED: To provide a rotation detector capable of improving detection accuracy of a rotation reference position of a rotor.SOLUTION: A first magnetic resistance element pair 23 output a waveform signal on the basis of change of a resistance value when a first magnetic resistance element 23a and a second magnetic resistance element 23b receive affection from a magnetic field, following to rotation of a signal rotor 10. The first magnetic resistance element pair 23 output a signal including a first waveform corresponding to unevenness of the signal rotor 10, and a second waveform corresponding to switching from a projection 12 to a tooth-lack part 13 and having amplitude larger than that of the first waveform, as the waveform signal. In addition, a peak/bottom detection determination/holding circuit 27 detects a peak value or a bottom value of the amplitude of the second waveform having amplitude larger than that of the first waveform by inputting the waveform signal. An angle signal determination circuit 30 inputs the peak value or the bottom value of the amplitude of the waveform signal and acquires the rotation reference position on the basis of the peak value or the bottom value.
【課題】回転体の回転基準位置の検出精度を向上させることができる回転検出装置を提供する。【解決手段】第１磁気抵抗素子対２３は、シグナルロータ１０の回転に伴って第１磁気抵抗素子２３ａ及び第２磁気抵抗素子２３ｂが磁場の影響を受けたときの抵抗値の変化に基づいて波形信号を出力する。第１磁気抵抗素子対２３は、波形信号として、シグナルロータ１０の凹凸に対応する第１波形と、突起１２から欠歯部１３への切り替わりに対応すると共に第１波形よりも振幅が大きい第２波形と、を含んだ信号を出力する。また、ピーク・ボトム検出判定・保持回路２７は、波形信号を入力して第１波形の振幅よりも大きい第２波形の振幅のピーク値またはボトム値を検出する。そして、角度信号判定回路３０は、波形信号の振幅のピーク値またはボトム値を入力し、ピーク値またはボトム値に基づいて回転基準位置を取得する。【選択図】図２ |
| format | Patent |
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【課題】回転体の回転基準位置の検出精度を向上させることができる回転検出装置を提供する。【解決手段】第１磁気抵抗素子対２３は、シグナルロータ１０の回転に伴って第１磁気抵抗素子２３ａ及び第２磁気抵抗素子２３ｂが磁場の影響を受けたときの抵抗値の変化に基づいて波形信号を出力する。第１磁気抵抗素子対２３は、波形信号として、シグナルロータ１０の凹凸に対応する第１波形と、突起１２から欠歯部１３への切り替わりに対応すると共に第１波形よりも振幅が大きい第２波形と、を含んだ信号を出力する。また、ピーク・ボトム検出判定・保持回路２７は、波形信号を入力して第１波形の振幅よりも大きい第２波形の振幅のピーク値またはボトム値を検出する。そして、角度信号判定回路３０は、波形信号の振幅のピーク値またはボトム値を入力し、ピーク値またはボトム値に基づいて回転基準位置を取得する。【選択図】図２</description><language>eng ; jpn</language><subject>ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS ; MEASURING ; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE ; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR ; PHYSICS ; TARIFF METERING APPARATUS ; TESTING</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20141215&DB=EPODOC&CC=JP&NR=2014235105A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25555,76308</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20141215&DB=EPODOC&CC=JP&NR=2014235105A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SUMIYA KAZUYOSHI</creatorcontrib><title>ROTATION DETECTOR</title><description>PROBLEM TO BE SOLVED: To provide a rotation detector capable of improving detection accuracy of a rotation reference position of a rotor.SOLUTION: A first magnetic resistance element pair 23 output a waveform signal on the basis of change of a resistance value when a first magnetic resistance element 23a and a second magnetic resistance element 23b receive affection from a magnetic field, following to rotation of a signal rotor 10. The first magnetic resistance element pair 23 output a signal including a first waveform corresponding to unevenness of the signal rotor 10, and a second waveform corresponding to switching from a projection 12 to a tooth-lack part 13 and having amplitude larger than that of the first waveform, as the waveform signal. In addition, a peak/bottom detection determination/holding circuit 27 detects a peak value or a bottom value of the amplitude of the second waveform having amplitude larger than that of the first waveform by inputting the waveform signal. An angle signal determination circuit 30 inputs the peak value or the bottom value of the amplitude of the waveform signal and acquires the rotation reference position on the basis of the peak value or the bottom value.
【課題】回転体の回転基準位置の検出精度を向上させることができる回転検出装置を提供する。【解決手段】第１磁気抵抗素子対２３は、シグナルロータ１０の回転に伴って第１磁気抵抗素子２３ａ及び第２磁気抵抗素子２３ｂが磁場の影響を受けたときの抵抗値の変化に基づいて波形信号を出力する。第１磁気抵抗素子対２３は、波形信号として、シグナルロータ１０の凹凸に対応する第１波形と、突起１２から欠歯部１３への切り替わりに対応すると共に第１波形よりも振幅が大きい第２波形と、を含んだ信号を出力する。また、ピーク・ボトム検出判定・保持回路２７は、波形信号を入力して第１波形の振幅よりも大きい第２波形の振幅のピーク値またはボトム値を検出する。そして、角度信号判定回路３０は、波形信号の振幅のピーク値またはボトム値を入力し、ピーク値またはボトム値に基づいて回転基準位置を取得する。【選択図】図２</description><subject>ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS</subject><subject>MEASURING</subject><subject>MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE</subject><subject>MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR</subject><subject>PHYSICS</subject><subject>TARIFF METERING APPARATUS</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBAM8g9xDPH091NwcQ1xdQ7xD-JhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFeAUYGhiZGxqaGBqaOxkQpAgBkoh5E</recordid><startdate>20141215</startdate><enddate>20141215</enddate><creator>SUMIYA KAZUYOSHI</creator><scope>EVB</scope></search><sort><creationdate>20141215</creationdate><title>ROTATION DETECTOR</title><author>SUMIYA KAZUYOSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2014235105A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2014</creationdate><topic>ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS</topic><topic>MEASURING</topic><topic>MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE</topic><topic>MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR</topic><topic>PHYSICS</topic><topic>TARIFF METERING APPARATUS</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>SUMIYA KAZUYOSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SUMIYA KAZUYOSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ROTATION DETECTOR</title><date>2014-12-15</date><risdate>2014</risdate><abstract>PROBLEM TO BE SOLVED: To provide a rotation detector capable of improving detection accuracy of a rotation reference position of a rotor.SOLUTION: A first magnetic resistance element pair 23 output a waveform signal on the basis of change of a resistance value when a first magnetic resistance element 23a and a second magnetic resistance element 23b receive affection from a magnetic field, following to rotation of a signal rotor 10. The first magnetic resistance element pair 23 output a signal including a first waveform corresponding to unevenness of the signal rotor 10, and a second waveform corresponding to switching from a projection 12 to a tooth-lack part 13 and having amplitude larger than that of the first waveform, as the waveform signal. In addition, a peak/bottom detection determination/holding circuit 27 detects a peak value or a bottom value of the amplitude of the second waveform having amplitude larger than that of the first waveform by inputting the waveform signal. An angle signal determination circuit 30 inputs the peak value or the bottom value of the amplitude of the waveform signal and acquires the rotation reference position on the basis of the peak value or the bottom value.
【課題】回転体の回転基準位置の検出精度を向上させることができる回転検出装置を提供する。【解決手段】第１磁気抵抗素子対２３は、シグナルロータ１０の回転に伴って第１磁気抵抗素子２３ａ及び第２磁気抵抗素子２３ｂが磁場の影響を受けたときの抵抗値の変化に基づいて波形信号を出力する。第１磁気抵抗素子対２３は、波形信号として、シグナルロータ１０の凹凸に対応する第１波形と、突起１２から欠歯部１３への切り替わりに対応すると共に第１波形よりも振幅が大きい第２波形と、を含んだ信号を出力する。また、ピーク・ボトム検出判定・保持回路２７は、波形信号を入力して第１波形の振幅よりも大きい第２波形の振幅のピーク値またはボトム値を検出する。そして、角度信号判定回路３０は、波形信号の振幅のピーク値またはボトム値を入力し、ピーク値またはボトム値に基づいて回転基準位置を取得する。【選択図】図２</abstract><oa>free_for_read</oa></addata></record> |
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| title | ROTATION DETECTOR |
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