JPH0523692B2 - - Google Patents
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- Publication number
- JPH0523692B2 JPH0523692B2 JP31518886A JP31518886A JPH0523692B2 JP H0523692 B2 JPH0523692 B2 JP H0523692B2 JP 31518886 A JP31518886 A JP 31518886A JP 31518886 A JP31518886 A JP 31518886A JP H0523692 B2 JPH0523692 B2 JP H0523692B2
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- Prior art keywords
- rotation
- absolute
- input shaft
- section
- detection section
- Prior art date
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- 238000001514 detection method Methods 0.000 claims description 41
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
この発明は、レゾルバやアブソリユートエンコ
ーダのような絶対位置検出器に関連し、殊にこの
発明は、多回転にわたつて入力軸の絶対回転量と
絶対回転角度とを検出するための多回転絶対位置
検出器に関する。Detailed Description of the Invention <Field of Industrial Application> The present invention relates to absolute position detectors such as resolvers and absolute encoders. The present invention relates to a multi-rotation absolute position detector for detecting a rotation amount and an absolute rotation angle.
＜従来の技術＞
一般に多回転絶対位置検出器は、入力軸に対し
絶対角度検出部と絶対回転量検出部とが連繁配備
された構造のものである。従来のこの種多回転絶
対位置検出器において、前記絶対回転量検出部に
は減速機を用いたものが一般的であり、入力軸の
回転を機械的に減速して出力軸に伝え、この出力
軸に取り付けた回転デイスクより絶対回転量の検
出パターンを読み取つて、絶対回転量を検出して
いる。<Prior Art> Generally, a multi-rotation absolute position detector has a structure in which an absolute angle detecting section and an absolute rotation amount detecting section are successively arranged on an input shaft. In conventional multi-rotation absolute position detectors of this kind, the absolute rotation amount detecting section generally uses a reducer, which mechanically decelerates the rotation of the input shaft and transmits it to the output shaft. The absolute amount of rotation is detected by reading the detection pattern of the amount of absolute rotation from a rotating disk attached to the shaft.
＜発明が解決しようとする問題点＞
ところが上記多回転絶対位置検出器の場合、減
速機が用いてあるため、全体形状およびその重量
が著しく嵩み、また製作コストが高価につくとい
う問題がある。<Problems to be Solved by the Invention> However, in the case of the above-mentioned multi-rotation absolute position detector, since a speed reducer is used, there are problems in that the overall shape and weight are significantly increased, and the manufacturing cost is high. .
この発明は、上記問題点に着目してなされたも
ので、絶対回転量検出部に減速機を用いず、小型
かつ軽量で、しかも安価な多回転絶対位置検出器
を提供することを目的とする。 This invention was made in view of the above problems, and aims to provide a small, lightweight, and inexpensive multi-rotation absolute position detector that does not use a reducer in the absolute rotation amount detection section. .
またこの発明の他の目的は、絶対回転量の検出
出力の取出方法を工夫することによつて、検出ミ
スの発生を防止した多回転絶対位置検出器を提供
することにある。 Another object of the present invention is to provide a multi-rotation absolute position detector that prevents detection errors by devising a method for extracting the detection output of the absolute rotation amount.
＜問題を解決するための手段＞
上記問題を解決するため、この発明では、入力
軸に対し絶対回転角度検出部と絶対回転量検出部
とが連繁配備された多回転絶対位置検出器であつ
て、前記絶対回転量検出部は、入力軸の回転量に
応じた２組の電気信号を入力軸の半回転分だけタ
イミングをずらせて発生させる信号発生手段と、
この信号発生手段からの電気信号に基づき計数動
作してその計数内容を保持するための第１、第２
の計数手段と、前記絶対回転角度検出部の検出出
力に基いき第１、第２の各計数手段の計数内容の
いずれかを選択して出力する出力選択手段とを具
備させることにした。<Means for Solving the Problem> In order to solve the above problem, the present invention provides a multi-rotation absolute position detector in which an absolute rotation angle detection section and an absolute rotation amount detection section are successively arranged on the input shaft. The absolute rotation amount detection section includes signal generation means for generating two sets of electric signals corresponding to the rotation amount of the input shaft with timings shifted by half a rotation of the input shaft;
A first and a second are used for counting based on the electric signal from the signal generating means and for holding the counting contents.
and an output selection means for selecting and outputting one of the counts of the first and second counting means based on the detection output of the absolute rotation angle detecting section.
＜作用＞
入力軸が回転すると、入力軸の回転量は絶対回
転量検出部で、また入力軸の回転角度は絶対角度
検出部で、それぞれ検出される。<Operation> When the input shaft rotates, the amount of rotation of the input shaft is detected by the absolute rotation amount detection section, and the rotation angle of the input shaft is detected by the absolute angle detection section.
前記絶対回転量検出部では、入力軸が回転する
と、その回転量に応じた２組の電気信号が信号発
生手段で発生せられ、それぞれ電気信号に基づき
第１、第２の各計数手段は計数動作を行つて入力
軸の絶対回転量を求める。 In the absolute rotation amount detection section, when the input shaft rotates, the signal generation means generates two sets of electric signals corresponding to the rotation amount, and the first and second counting means perform counting based on the electric signals, respectively. Perform the operation and find the absolute rotation amount of the input shaft.
かくて第１、第２の各計数手段の計数内容は出
力選択手段に与えられ、出力選択手段は絶対回転
角度検出部の検出出力、すなわち入力軸の回転角
度位置に応じて正確さが確保されている方の計数
内容を選択して出力する。 In this way, the count contents of each of the first and second counting means are given to the output selection means, and the output selection means ensures accuracy according to the detection output of the absolute rotation angle detection section, that is, the rotation angle position of the input shaft. Select and output the counting contents of the selected one.
この発明の多回転絶対位置検出器の場合、機械
的な減速機を用いていないから、小型かつ軽量で
あり、しかも安価に製作できる。また絶対回転量
の検出出力の取出方法を工夫してあるから、検出
ミスの発生が完全に防止されることになる。 The multi-rotation absolute position detector of the present invention does not use a mechanical speed reducer, so it is small and lightweight, and can be manufactured at low cost. Furthermore, since the method for extracting the detection output of the absolute rotation amount is devised, detection errors can be completely prevented from occurring.
＜実施例＞
第１図は、この発明の一実施例にかかる多回転
絶対位置検出器の構成例を示す。<Embodiment> FIG. 1 shows an example of the configuration of a multi-rotation absolute position detector according to an embodiment of the present invention.
図示例のものは入力軸１に対し絶対回転角度検
出部２と絶対回転量検出部３とが連繁配備された
もので、絶対回転角度検出部２および絶対回転量
検出部３を円筒状ケース４の内部に収容配備する
と共に、前記入力軸１の先端をケース４の前面へ
突出させている。 In the illustrated example, an absolute rotation angle detection section 2 and an absolute rotation amount detection section 3 are arranged in series with respect to an input shaft 1, and the absolute rotation angle detection section 2 and the absolute rotation amount detection section 3 are arranged in a cylindrical case. The input shaft 1 is housed inside the case 4, and the tip of the input shaft 1 protrudes toward the front of the case 4.
前記絶対回転角度検出部２は、入力軸１の絶対
回転角度を検出するためのものであり、第２図に
示す如く、絶対回転角度の検出パターンが施され
た回転デイスク５を入力軸１に装着し、この回転
デイスク５およびスリツト８を中間に挟んで複数
の発光ダイオードより成る発光素子群６と、複数
のフオトトランジスタより成る受光素子群７とを
対向配備して構成されている。 The absolute rotation angle detection section 2 is for detecting the absolute rotation angle of the input shaft 1, and as shown in FIG. A light emitting element group 6 consisting of a plurality of light emitting diodes and a light receiving element group 7 consisting of a plurality of phototransistors are arranged facing each other with the rotary disk 5 and the slit 8 in between.
なお上記発光素子群６および受光素子群７は主
電源（図示せず）により駆動される。 Note that the light emitting element group 6 and the light receiving element group 7 are driven by a main power source (not shown).
前記絶対回転量検出部３は、入力軸１の絶対回
転量（絶対回転数）を検出するためのものであ
り、入力軸１の回転量に応じた２組の電気信号を
発生させる信号発生部９と、この信号発生部９か
らのそれぞれ電気信号に基づき計数動作すると共
にその計数内容を常時保持するための第１、第２
の計数部１０Ａ，１０Ｂと、各計数部１０Ａ，１
０Ｂの電源をバツクアツプするためのバツクアツ
プ電池１１、前記絶対回転角度検出部２の検出出
力に基づき第１、第２の各計数部１０Ａ，１０Ｂ
の計数内容のいずれかを選択して出力する出力選
択部１２とを備えている。 The absolute rotation amount detection section 3 is for detecting the absolute rotation amount (absolute rotation speed) of the input shaft 1, and is a signal generation section that generates two sets of electric signals according to the rotation amount of the input shaft 1. 9, and first and second units that perform counting operations based on the electrical signals from the signal generator 9 and always hold the counting contents.
counting parts 10A, 10B, and each counting part 10A, 1
A backup battery 11 for backing up the power source of 0B, and first and second counting sections 10A and 10B based on the detection output of the absolute rotation angle detection section 2.
and an output selection section 12 that selects and outputs one of the counted contents.
図示例の信号発生部９は、入力軸１の後端に回
転デイスク１２を装着し、この回転デイスク１２
の上面適所に永久磁石片１３を配備すると共に、
この永久磁石片１３の通過軌道上の180度ずれた
対向位置にそれぞれ一対の磁気センサ１４Ａ，１
５Ａ，１４Ｂ，１５Ｂ（以下、１４Ａ，１４Ｂを
「第１センサ」、１５Ａ，１５Ｂを「第２センサ」
という）を並列配備したものである。第１、第２
の各センサ１４Ａ，１５Ａおよび１４Ｂ，１５Ｂ
は例えばリードスイツチやホール素子であつて、
磁気センサ１４Ａ，１５Ａの方は絶対回転角度検
出部２の原点と位相を合わせて、また磁気センサ
１４Ｂ，１５Ｂの方は180度位相をずらせて、そ
れぞれケース内に位置決め固定されており、入力
軸１が１回転して永久磁石片１３が各センサ位置
を通過する度に電気信号i1，i2を発生させる。 The illustrated signal generator 9 has a rotary disk 12 attached to the rear end of the input shaft 1.
A permanent magnet piece 13 is placed at a suitable position on the upper surface of the
A pair of magnetic sensors 14A, 1 are provided at opposing positions shifted by 180 degrees on the trajectory of the permanent magnet piece 13, respectively.
5A, 14B, 15B (hereinafter, 14A, 14B are "first sensor", 15A, 15B are "second sensor")
) are deployed in parallel. 1st, 2nd
Each sensor 14A, 15A and 14B, 15B
is, for example, a reed switch or a Hall element,
The magnetic sensors 14A and 15A are aligned in phase with the origin of the absolute rotation angle detection unit 2, and the magnetic sensors 14B and 15B are positioned and fixed in the case with a phase shift of 180 degrees. Electric signals i 1 and i 2 are generated each time the permanent magnet piece 13 passes each sensor position during one rotation of the permanent magnet 1 .
この電気信号i1，i2の発生順序は回転デイスク
１２の回転方向に応じて反転し、正回転のとき
は、第３図に示す如く第１センサ、第２センサの
順で電気信号i1，i2が発生し、また逆回転のとき
は、第４図に示す如く第２センサ、第１センサの
順で電気信号i1，i2が発生する。 The order in which the electric signals i 1 and i 2 are generated is reversed depending on the direction of rotation of the rotary disk 12, and in the case of forward rotation, the electric signals i 1 are generated in the order of the first sensor and the second sensor as shown in FIG. , i 2 are generated, and when the rotation is reversed, electric signals i 1 and i 2 are generated in the order of the second sensor and the first sensor as shown in FIG.
前記の第１、第２の各計数部１０Ａ，１０Ｂ
は、信号発生部９からの電気信号i1，i2に基づき
入力軸１の回転方向を検出する論理回路より成る
判断回路部と、入力軸１の回転量を加減算して計
数する計数回路部とを含んでおり、この計数回路
部には低消費電力のCMOSより成るアツプ・ダ
ウンカウンタが用いられている。第１、第２の各
計数部１０Ａ，１０Ｂは信号発生部９より第３図
に示すタイミングで電気信号i1，i2が送出されて
くると、入力軸１が正回転していると判断してア
ツプカウントし、また第４図に示すタイミングで
電気信号i2，i1が送出されてくると、入軸力１が
逆転していると判断してダウンカウントする。ま
たこれら各計数部１０Ａ，１０Ｂは、主電源が切
られてもバツクアツプ電池１１により電源がバツ
クアツプされており、従つてその計数内容は常時
保持される。 The first and second counting sections 10A and 10B
, a judgment circuit section consisting of a logic circuit that detects the rotation direction of the input shaft 1 based on the electric signals i 1 and i 2 from the signal generation section 9, and a counting circuit section that adds and subtracts the rotation amount of the input shaft 1 and counts it. This counting circuit section uses an up/down counter made of CMOS with low power consumption. The first and second counting sections 10A and 10B determine that the input shaft 1 is rotating in the forward direction when the electrical signals i 1 and i 2 are sent from the signal generating section 9 at the timing shown in FIG. When the electric signals i 2 and i 1 are sent out at the timing shown in FIG. 4, it is determined that the input shaft force 1 is reversed and the count is down. Further, even if the main power is turned off, each of the counting sections 10A and 10B is backed up by a backup battery 11, so that the counting contents are always maintained.
なお前記第１、第２の各センサ１４Ａ，１５Ａ
および１４Ａ，１５Ｂとしてホール素子を用いた
場合は、信号発生部９の出力側に各ホール素子の
電気抵抗の変化を検出する回路を挿入すると共
に、その回路および各ホール素子にバツクアツプ
電池１１を接続して電源のバツクアツプを行うよ
うにする。 Note that each of the first and second sensors 14A, 15A
When Hall elements are used as 14A and 15B, a circuit for detecting changes in the electrical resistance of each Hall element is inserted on the output side of the signal generating section 9, and a backup battery 11 is connected to the circuit and each Hall element. to perform a power backup.
上記第１、第２の各計数部１０Ａ，１０Ｂの計
数内容は出力選択部１２に与えられる。 The count contents of the first and second counting sections 10A and 10B are provided to the output selection section 12.
この出力選択部１２は、入力軸１の回転角度位
置が０度のとき、すなわち永久磁石片１３が磁石
センサ１４Ａ，１５Ａの近傍ないし中間位置に存
在するときは第１計数部１０Ａの計数内容が不確
実になり、また入力軸１の回転角度位置が180度
のとき、すなわち永久磁石片１３が磁気センサ１
４Ｂ，１５Ｂの近傍ないし中間位置に存在すると
きは第２計数部１０Ｂの計数内容が不確実になる
ことに鑑み、入力軸１の現在の回転角度位置に応
じて各計数部１０Ａ，１０Ｂの計数内容のうち正
確さが確保されている方の計数内容を選択して出
力するためのものである。 This output selection section 12 determines that when the rotation angle position of the input shaft 1 is 0 degrees, that is, when the permanent magnet piece 13 is present in the vicinity or intermediate position of the magnet sensors 14A and 15A, the count content of the first counting section 10A is When the rotation angle position of the input shaft 1 is 180 degrees, that is, the permanent magnet piece 13 is connected to the magnetic sensor 1.
4B, 15B, the counting contents of the second counting section 10B become uncertain when the second counting section 10B is located near or in the intermediate position. This is for selecting and outputting the counting contents whose accuracy is ensured.
いま仮に絶対回転角度検出部２の分解能をｎと
すると、第５図に示す如く、絶対回転角度検出部
２の検出値が０やｎの近傍位置では第１の計数部
１０Ａの計数内容が不確実となり（図中不確実領
域を斜線で示す）、またｎ／２の近傍位置では第
２の計数部１０Ｂの計数内容が不確実となる。そ
こでこの実施例の出力選択部１２では、絶対回転
角度検出部２の検出量が０〜ｎ／４−１の範囲で
は第２計数部１０Ｂの計数内容NBに加算した値
をｎ／４〜3n／４−１の範囲では第１の計数部
１０Ａの計数内容NAを、3n／４〜ｎ−１の範囲
では第２の計数部１０Ｂの計数内容NBを、それ
ぞれ選択して出力している。 Assuming that the resolution of the absolute rotation angle detection section 2 is n, as shown in FIG. (The uncertain area is indicated by diagonal lines in the figure), and the count content of the second counting section 10B becomes uncertain at a position near n/2. Therefore, in the output selection section 12 of this embodiment, when the detected amount of the absolute rotation angle detection section 2 is in the range of 0 to n/4-1, the value added to the count content N B of the second counting section 10B is set to n/4 to n/4-1. In the range of 3n/4-1, the count content N A of the first counting section 10A is selected, and in the range of 3n/4 to n-1, the count content N B of the second counting section 10B is selected and output. ing.
しかして入力軸１が回転すると、入力軸１の絶
対回転量は絶対回転量検出部３で検出され、また
入力軸１の絶対回転角度は絶対回転角度検出部２
で検出される。 When the input shaft 1 rotates, the absolute rotation amount of the input shaft 1 is detected by the absolute rotation amount detection section 3, and the absolute rotation angle of the input shaft 1 is detected by the absolute rotation angle detection section 2.
Detected in
すなわち絶対回転角度検出部２においては、入
力軸１の回転で回転デイスク５が一体に回転し、
発光素子群６の出力光のうちあるものは回転デイ
スク５の検出パターンに従つて透過し、またある
ものは遮断される。透過光は受光素子群７で受光
されて電気信号に変換され、絶対回転角度を表す
デイジタル信号に生成されて出力される。 That is, in the absolute rotation angle detection section 2, the rotation of the input shaft 1 causes the rotary disk 5 to rotate integrally,
Some of the output light from the light emitting element group 6 is transmitted according to the detection pattern of the rotary disk 5, and some is blocked. The transmitted light is received by the light-receiving element group 7, converted into an electrical signal, generated into a digital signal representing the absolute rotation angle, and output.
また絶対回転量検出部３においては、入力軸１
の回転で回転デイスク１２が一体回転し、この回
転とともに永久磁石片１３が回転する。この永久
磁石片１３が第１、第２の各センサ１４Ａ，１５
Ａ、さらには180度ずれて位置する他の組の第１、
第２の各センサ１４Ｂ，１５Ｂの位置をそれぞれ
透過すると、各センサ１４Ａ，１５Ａおよび１４
Ｂ，１５Ｂはこれを検出して、１回転につき１個
のパルス状の電気信号i1，i2を異なるタイミング
でそれぞれ発生させる。これらの電気信号i1，i2
はそれぞれ第１、第２の各計数部１０Ａ，１０Ｂ
に与えられ、各計数部１０Ａ，１０Ｂはこれら電
気信号i1，i2の送出タイミングに基づき入力軸１
の回転方向を判断すると共に、その回転方向に応
じてアツプカウントまたはダウンカウントし、そ
の計数値を出力選択部１２へ出力する。なお各計
数部１０Ａ，１０Ｂはバツクアツプ電池１１でバ
ツクアツプされており、従つて計数部１０Ａ，１
０Ｂでの計数内容は主電源が切れても完全保持さ
れる。 In addition, in the absolute rotation amount detection section 3, the input shaft 1
The rotating disk 12 rotates integrally with the rotation, and the permanent magnet piece 13 rotates with this rotation. This permanent magnet piece 13 is connected to each of the first and second sensors 14A and 15.
A, and the first of another set located 180 degrees apart,
When passing through the positions of the second sensors 14B and 15B, each of the sensors 14A, 15A and 14
B and 15B detect this and generate one pulse-like electric signal i 1 and i 2 per rotation at different timings, respectively. These electrical signals i 1 , i 2
are the first and second counting sections 10A and 10B, respectively.
are given to the input shaft 1 based on the sending timings of these electrical signals i 1 and i 2 .
It determines the direction of rotation of , counts up or counts down depending on the direction of rotation, and outputs the counted value to the output selection section 12 . Note that each counting section 10A, 10B is backed up by a backup battery 11, so that each counting section 10A, 10B is backed up by a backup battery 11.
The count contents at 0B are completely retained even if the main power is turned off.
かくて出力選択部１２では絶対回転角度検出部
２の検出出力、すなわち入力軸１の回転角度位置
に応じて正確さが確保されている方の計数内容を
選択し、それを絶対回転量として出力するもので
ある。 In this way, the output selection section 12 selects the detection output of the absolute rotation angle detection section 2, that is, the count content whose accuracy is ensured according to the rotation angle position of the input shaft 1, and outputs it as the absolute rotation amount. It is something to do.
＜発明の効果＞
この発明は上記の如く、入力軸の絶対回転量を
機械的な減速機を用いず、電気的な方法で検出す
るようにしたから、小型かつ軽量な多回転絶対位
置検出器を安価に製作できる。また絶対回転量の
検出出力の取出方法を工夫して、その正確さが確
保しているから、絶対回転量の検出ミスの発生が
完全に防止される等、発明目的を達成した顕著な
効果を奏する。<Effects of the Invention> As described above, this invention detects the absolute rotation amount of the input shaft by an electrical method without using a mechanical speed reducer, so it can provide a compact and lightweight multi-rotation absolute position detector. can be manufactured at low cost. In addition, the method for extracting the detection output of the absolute rotation amount has been devised to ensure its accuracy, which completely prevents the occurrence of errors in detecting the absolute rotation amount, achieving the remarkable effect of achieving the purpose of the invention. play.
第１図はこの発明の一実施例にかかる多回転絶
対位置検出器の構成を示す説明図、第２図は絶対
回転角度検出部の構造を示す説明図、第３図およ
び第４図は信号発生部が出力する電気信号のタイ
ミングを示すタイムチヤート、第５図は出力選択
部の選択動作を示す説明図である。
１……入力軸、２……絶対回転角度検出部、３
……絶対回転量検出部、９……信号発生部、１０
Ａ，１０Ｂ……計数部、１２……出力選択部。
FIG. 1 is an explanatory diagram showing the structure of a multi-rotation absolute position detector according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the structure of an absolute rotation angle detecting section, and FIGS. 3 and 4 are illustrations of signals. FIG. 5 is a time chart showing the timing of the electrical signals output by the generation section, and an explanatory diagram showing the selection operation of the output selection section. 1...Input shaft, 2...Absolute rotation angle detection section, 3
... Absolute rotation amount detection section, 9 ... Signal generation section, 10
A, 10B... Counting section, 12... Output selection section.
Claims (1)
量検出部とが連撃配備された多回転絶対位置検出
器であつて、 前記絶対回転量検出部は、 入力軸の回転量に応じた２組の電気信号を入力
軸の半回転分だけタイミングをずらせて発生させ
る信号発生手段と、 この信号発生手段からの各電気信号に基づき計
数動作してその計数内容を保持するための第１、
第２の計数手段と、 前記絶対回転角度検出部の検出出力に基づき第
１、第２の各計数手段の計数内容のいずれかを選
択して出力する出力選択手段とを具備して成る多
回転絶対位置検出器。 ２ 信号発生手段は、入力軸に回転デイスクを装
着し、この回転デイスク上に永久磁石片を設ける
と共に、この永久磁石片の通過軌道上の180度ず
れた対向位置にそれぞれ一対の磁気センサを並列
配備して構成されている特許請求の範囲第１項記
載の多回転絶対位置検出器。 ３ 第１、第２の各計数手段は、アツプ・ダウン
カウンタを含んでいる特許請求の範囲第１項記載
の多回転絶対位置検出器。[Scope of Claims] 1. A multi-rotation absolute position detector in which an absolute rotation angle detection section and an absolute rotation amount detection section are successively arranged on an input shaft, wherein the absolute rotation amount detection section is arranged such that: Signal generation means that generates two sets of electric signals corresponding to the amount of rotation with timings shifted by half a revolution of the input shaft, and counts based on each electric signal from this signal generation means and holds the count contents. First, for
A multi-rotation device comprising: a second counting means; and an output selection means for selecting and outputting one of the count contents of the first and second counting means based on the detection output of the absolute rotation angle detection section. Absolute position detector. 2 The signal generation means includes a rotating disk mounted on the input shaft, a permanent magnet piece provided on the rotating disk, and a pair of magnetic sensors arranged in parallel at opposite positions shifted by 180 degrees on the trajectory of the permanent magnet piece. The multi-rotation absolute position detector according to claim 1, which is configured to be deployed. 3. The multi-rotation absolute position detector according to claim 1, wherein each of the first and second counting means includes an up/down counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31518886A JPS63159714A (en) | 1986-12-23 | 1986-12-23 | Multiple rotation absolute position detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31518886A JPS63159714A (en) | 1986-12-23 | 1986-12-23 | Multiple rotation absolute position detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63159714A JPS63159714A (en) | 1988-07-02 |
| JPH0523692B2 true JPH0523692B2 (en) | 1993-04-05 |
Family
ID=18062480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31518886A Granted JPS63159714A (en) | 1986-12-23 | 1986-12-23 | Multiple rotation absolute position detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63159714A (en) |
-
1986
- 1986-12-23 JP JP31518886A patent/JPS63159714A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63159714A (en) | 1988-07-02 |
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