JP6086517B2 - 電界式タイムグレーティング角変位センサ - Google Patents
電界式タイムグレーティング角変位センサ Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
- G01D5/241—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by relative movement of capacitor electrodes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/243—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the phase or frequency of ac
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
Uo=KeUmsin(ω+πx/W) (1)
ここで、Keは電界結合係数、xは回転子と固定子の間の相対角変位、Wは回転子電極に対応する角度の4倍である。
Claims (7)
- 回転子と固定子の両部分を備える電界式タイムグレーティング角変位センサであって、
前記回転子は数量mの回転子電極(1−1)を有し、回転子基板(1)の環状表面全体に等間隔で配置され、
前記固定子は数量4mの固定子電極(2−1)を有し、固定子基板(2)の環状表面全体に均一に配置され、mは1以上の整数であり、
前記固定子電極の第4n+1電極は1組に繋がってA励磁相を構成し、前記固定子電極の第4n+2電極は1組に繋がってB励磁相を構成し、前記固定子電極の第4n+3電極は1組に繋がってC励磁相を構成し、前記固定子電極の第4n+4電極は1組に繋がってD励磁相を構成し、n=0,1,2,3,…,m−1であり、
前記固定子のA、B、C、D4つの励磁相は、それぞれ順に位相差90°の等振幅、等周波数の正弦曲線励磁電圧Ua、Ub、Uc、Udに連結し、
前記回転子基板と前記固定子基板は、同軸上に取付けられ、前記回転子電極(1−1)と前記固定子電極(2−1)は正対し、一定間隔δだけ離間して結合コンデンサを形成し、
前記回転子基板と前記固定子基板は相対的に回転し、前記回転子電極上で1経路の進行波信号Uoが生じ、前記進行波信号及び1経路の同周波数の基準信号Urは整形回路により整形された後、位相比較回路により位相が比較され、
両経路の信号の位相差は内挿された高周波クロックパルスの個数により表示され、スケール変換により前記回転子基板の前記固定子基板に対する角変位値を得る、
ことを特徴とする電界式タイムグレーティング角変位センサ。 - 前記固定子電極(2−1)は、扇環形又は曲面矩形であり、大きさは同一であり、隣り合う2つの電極の間は一定の絶縁間隔が保持されている、
ことを特徴とする請求項1に記載の電界式タイムグレーティング角変位センサ。 - 前記回転子電極(1−1)は、円周方向に沿って配置展開された後の形状が二つの正弦曲線が上下に相対して形成された双正弦形であり、隣り合う前記回転子電極(1−1)の間は導線により連結され、前記回転子電極の長さは前記固定子電極の長さよりやや短く、その幅は1つの前記固定子電極の幅と1つの絶縁間隔との和であり、隣り合う2つの前記回転子電極の間隔は前記回転子電極の幅の3倍である、
ことを特徴とする請求項1に記載の電界式タイムグレーティング角変位センサ。 - 前記回転子電極(1−1)の形状は、[0,π]区間における正弦曲線とx軸で囲まれた領域及び[π,2π]区間における正弦曲線とx軸で囲まれた領域を合わせて構成される、
ことを特徴とする請求項1〜3のいずれか1項に記載の電界式タイムグレーティング角変位センサ。 - 前記固定子基板の表面は、4層の誘電体膜に覆われ、第1層は金属膜であり、4本の励磁信号導線(2−2)を構成し、それぞれA、B、C、Dの各励磁相に対応する固定子電極を1組に繋げ、
第2層は絶縁膜であり、
第3層は金属膜であって前記固定子電極(2−1)を構成し、
第4層は絶縁保護膜である、
ことを特徴とする請求項1〜3のいずれか1項に記載の電界式タイムグレーティング角変位センサ。 - 前記回転子基板(1)及び前記固定子基板(2)は円柱体又は円筒環であり、その円柱上下端面又は円筒環の内外柱面に沿って電極を配置する、
ことを特徴とする請求項1〜3のいずれか1項に記載の電界式タイムグレーティング角変位センサ。 - 前記固定子電極(2−1)の前記A励磁相と前記回転子電極(1−1)は結合コンデンサC1を形成し、前記B励磁相と前記回転子電極は結合コンデンサC2を形成し、前記C励磁相と前記回転子電極は結合コンデンサC3を形成し、前記D励磁相と前記回転子電極は結合コンデンサC4を形成し、
循環して交替で変化する前記コンデンサC1、C2、C3、C4は2つずつ交互に動作して交番電界の結合路を構成し、回転子電極は進行波信号Uoを出力する、
ことを特徴とする請求項1〜3のいずれか1項に記載の電界式タイムグレーティング角変位センサ。
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CN201410196685.1A CN103968750B (zh) | 2014-05-09 | 2014-05-09 | 一种电场式时栅角位移传感器 |
CN201410196685.1 | 2014-05-09 | ||
PCT/CN2014/083215 WO2015168992A1 (zh) | 2014-05-09 | 2014-07-29 | 一种电场式时栅角位移传感器 |
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JP (1) | JP6086517B2 (ja) |
CN (1) | CN103968750B (ja) |
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CN103968750B (zh) | 2014-05-09 | 2017-01-18 | 重庆理工大学 | 一种电场式时栅角位移传感器 |
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DE112014006647B4 (de) | 2022-05-25 |
WO2015168992A1 (zh) | 2015-11-12 |
US20170003146A1 (en) | 2017-01-05 |
CN103968750A (zh) | 2014-08-06 |
CN103968750B (zh) | 2017-01-18 |
US10359299B2 (en) | 2019-07-23 |
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JP2016540207A (ja) | 2016-12-22 |
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