JPH0854205A - Rotational position detector for electric rotating - Google Patents
Rotational position detector for electric rotatingInfo
- Publication number
- JPH0854205A JPH0854205A JP6189163A JP18916394A JPH0854205A JP H0854205 A JPH0854205 A JP H0854205A JP 6189163 A JP6189163 A JP 6189163A JP 18916394 A JP18916394 A JP 18916394A JP H0854205 A JPH0854205 A JP H0854205A
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- Prior art keywords
- rotation
- state
- rotary shaft
- electric machine
- rotary
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- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000004804 winding Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は回転電機の回転位置検出
装置に関し、特に回転電機をベクトル制御するために磁
極位置を検出する際に用いて有用なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary position detecting device for a rotary electric machine, and is particularly useful for detecting a magnetic pole position for vector control of the rotary electric machine.
【０００２】[0002]
【従来の技術】例えば永久磁石回転子を界磁とする同期
電動機を直流電動機と同様の特性で運転する方式として
ベクトル制御が提案されている。2. Description of the Related Art For example, vector control has been proposed as a method of operating a synchronous motor having a permanent magnet rotor as a field with the same characteristics as a DC motor.
【０００３】このベクトル制御を実現するには回転子の
磁極位置を検出する必要があるため、従来、次の様な方
法で磁極位置を検出していた。Since it is necessary to detect the magnetic pole position of the rotor in order to realize this vector control, conventionally, the magnetic pole position is detected by the following method.
【０００４】1) ホール素子で磁極位置を検出する。 2) レゾルバで磁極位置を検出する。 3) アブソリュートエンコーダで磁極位置を検出する。1) The Hall element detects the magnetic pole position. 2) Detect the magnetic pole position with a resolver. 3) Detect the magnetic pole position with the absolute encoder.
【０００５】[0005]
【発明が解決しようとする課題】上述の如き従来技術に
係る磁極位置検出方法は次の様な欠点がある。The magnetic pole position detecting method according to the prior art as described above has the following drawbacks.
【０００６】1) ホール素子を用いる場合には、電動機
の固定子にホール素子を固定する必要があるため、これ
に伴なう構造が複雑になる。1) When the hall element is used, it is necessary to fix the hall element to the stator of the electric motor, which complicates the structure.
【０００７】2) レゾルバを用いる場合には、このレゾ
ルバ自体が高価であることに基因してコスト高になるば
かりでなく、レゾルバの固定子巻線に印加する正弦波電
圧と回転子側に誘起された電圧の位相差により位置検出
を行なうため、磁気的なノイズ対策を含め、検出回路の
構造が複雑になる。2) When a resolver is used, not only the cost is high due to the fact that the resolver itself is expensive, but also the sine wave voltage applied to the stator winding of the resolver and induced on the rotor side. Since the position is detected by the phase difference of the applied voltage, the structure of the detection circuit becomes complicated including the magnetic noise countermeasure.
【０００８】3) アブソリュートエンコーダを用いる場
合には、アブソリュートエンコーダ自体が10,000(rpm）
程度の高速に対応するものが提案されておらず、電動機
の高速化に対処することができない。3) When using an absolute encoder, the absolute encoder itself is 10,000 (rpm)
There is no proposal for a high speed, and it is not possible to cope with a high speed electric motor.
【０００９】本発明は、上記従来技術に鑑み、安価かつ
簡単な構造で高精度の位置検出を実現し得る回転電機の
回転位置検出装置を提供することを目的とする。In view of the above-mentioned prior art, it is an object of the present invention to provide a rotary position detecting device for a rotary electric machine which can realize highly accurate position detection with an inexpensive and simple structure.
【００１０】[0010]
【課題を解決するための手段】上記目的を達成する本発
明の構成は、電気角で１８０°毎に１つの状態とこれと
異なる他の状態とが円周方向に関し隣接して交互に繰返
すように構成して回転電機の回転軸に固着した円板と、
円周方向に関し機械角で相互に１２０°隔てた位置にそ
れぞれ配設して前記円板の回転に伴なう前記１つの状態
と他の状態とを検出し、各状態に対応する２値信号をそ
れぞれ送出する３個のセンサと、前記回転軸の正転，逆
転を表わす情報とともに前記絶対位置間を細分割する回
転角度に応じた数のパルスを発生するようこの回転軸に
取付けた円板部及びこの円板部に近接して配設したセン
サ部を有するロータリエンコーダと、前記３個のセンサ
が送出する２値信号の組合せにより電気角で６０°毎の
前記回転軸の絶対位置を検出するとともに、この絶対位
置を表わす信号と前記ロータリエンコーダのセンサ部の
出力信号である隣接する絶対位置間の相対位置を表わす
信号とを処理して前記回転軸の回転位置を演算する演算
手段とを有することを特徴とする。The structure of the present invention which achieves the above object is such that one state and another state different from each other are alternately repeated every 180 ° in electrical angle in the circumferential direction. And a disk fixed to the rotary shaft of the rotating electric machine,
Binary signals corresponding to each state are provided by arranging them at positions separated from each other by a mechanical angle of 120 ° in the circumferential direction and detecting the one state and the other state accompanying the rotation of the disc. And a disk attached to this rotary shaft so as to generate a number of pulses corresponding to a rotation angle for subdividing the absolute position together with information indicating forward and reverse rotations of the rotary shaft. The absolute position of the rotary shaft is detected every 60 ° in electrical angle by a combination of a rotary encoder having a sensor part and a sensor part arranged in the vicinity of the disk part, and a binary signal sent by the three sensors. In addition, a processing means for processing the signal representing the absolute position and the signal representing the relative position between the adjacent absolute positions which is the output signal of the sensor unit of the rotary encoder to calculate the rotational position of the rotary shaft. To have It is characterized by.
【００１１】[0011]
【作用】上記構成の本発明によれば、３個のセンサが送
出する２値信号の組合せにより電気角で６０°毎の回転
軸の絶対位置が求まり、これにエンコーダで検出する前
記絶対位置間の相対位置を加味することにより回転軸の
回転位置を精確に検出する。According to the present invention having the above-mentioned structure, the absolute position of the rotary shaft is obtained every 60 ° in electrical angle by the combination of the binary signals sent by the three sensors, and the absolute position between the absolute positions detected by the encoder is obtained. The rotation position of the rotary shaft is accurately detected by taking into account the relative position of.
【００１２】[0012]
【実施例】以下本発明の実施例を図面に基づき詳細に説
明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【００１３】本実施例は８極の回転界磁形の電動機に適
用するものであり、図１に示すように、電気角で６０°
（機械角で１５°）毎の回転軸の絶対位置を検出するた
めの絶対位置検出部Ｉ、隣接する絶対位置間の相対位置
を細分割して検出するための相対位置検出部II並びに絶
対位置検出部Ｉ及び相対位置検出部IIの出力信号を処理
して回転軸の回転位置を演算する演算部III を有する。The present embodiment is applied to an 8-pole rotating field type electric motor, and as shown in FIG. 1, the electrical angle is 60 °.
Absolute position detector I for detecting the absolute position of the rotary axis for each (15 ° in mechanical angle), relative position detector II for detecting the relative position between adjacent absolute positions by subdivision, and absolute position It has a computing unit III for processing the output signals of the detection unit I and the relative position detection unit II to compute the rotational position of the rotary shaft.
【００１４】絶対位置検出部Ｉは、図２に示すように、
回転軸１に固着され、この回転軸１と一体的に回転する
円板２と３個のセンサ３Ａ，３Ｂ，３Ｃとを有する。The absolute position detector I, as shown in FIG.
It has a disc 2 fixed to the rotary shaft 1 and rotating integrally with the rotary shaft 1, and three sensors 3A, 3B, 3C.
【００１５】円板２は、図２（ａ）に特にこの部分を抽
出して示すように、その最外周部に円周方向に亘り凸部
２ａと凹部２ｂとが電気角で１８０°（機械角で４５
°）毎に交互に形成してある。センサ３Ａ，３Ｂ，３Ｃ
は、図２（ｂ）に特にこの部分を抽出して示すように、
発光部３ａ及び受光部３ｂを有しており、発光部３ａと
受光部３ｂとの間に円板２の凸部２ａ若しくは凹部２ｂ
が位置するよう周方向に亘り等配に配設してある。すな
わち、センサ３Ａ〜３Ｃは、図２（ｃ）に示すように、
固定子巻線のＵ，Ｖ，Ｗ相にそれぞれ対応するよう周方
向に亘り機械角で１２０°隔てた位置にそれぞれ配設・
固定してある。また、このとき、回転磁界に伴ない固定
子巻線のＵ相に誘起される電圧とセンサ３Ａとの位相が
一致するよう、すなわち図３に示す関係となるよう円板
２の位置を調整してある。As shown in FIG. 2A by extracting this portion, the circular plate 2 has a convex portion 2a and a concave portion 2b on the outermost peripheral portion in the circumferential direction at an electrical angle of 180 ° (machine). 45 at the corner
°) are formed alternately. Sensors 3A, 3B, 3C
As shown by extracting this part in FIG. 2 (b),
It has a light emitting portion 3a and a light receiving portion 3b, and the convex portion 2a or the concave portion 2b of the disc 2 is provided between the light emitting portion 3a and the light receiving portion 3b.
Are evenly arranged in the circumferential direction so as to be positioned. That is, the sensors 3A to 3C, as shown in FIG.
Arranged at positions separated by a mechanical angle of 120 ° in the circumferential direction so as to correspond to the U, V, and W phases of the stator winding.
It is fixed. At this time, the position of the disc 2 is adjusted so that the voltage induced in the U phase of the stator winding due to the rotating magnetic field and the phase of the sensor 3A match, that is, the relationship shown in FIG. There is.
【００１６】このように調整することにより永久磁石電
動機の制御において、ベクトル制御を行なうのに際し磁
界の絶対位置を検出する必要があるが、出力パルスＰ1
が立上がる際の磁界位置がＵ相巻線と一致しているの
で、これを磁界の絶対位置の基準点とすることができ
る。By adjusting in this way, in controlling the permanent magnet motor, it is necessary to detect the absolute position of the magnetic field when performing vector control, but the output pulse P 1
Since the position of the magnetic field at the time of rising coincides with the U-phase winding, this can be used as the reference point for the absolute position of the magnetic field.
【００１７】図１に示すパルス発生回路４は、各センサ
３Ａ，３Ｂ，３Ｃの出力パルスＰ1，Ｐ2 ，Ｐ3 の立上
り及び立下り時点に基づき電気角でπ／３毎の絶対位置
パルスＰ4 を発生するものである。このときの波形を図
４に示す。同図に示すように、出力パルスＰ1 ，Ｐ2 ，
Ｐ3 はそれぞれ固定子巻線のＵ相，Ｖ相，Ｗ相の誘起電
圧Ｕ，Ｖ，Ｗに位相が一致するように構成してあり、図
中のＰ4-0 ，Ｐ4-1 ，Ｐ4-2 ，Ｐ4-3 ，…が絶対位置パ
ルスである。The pulse generating circuit 4 shown in FIG. 1 has an absolute position pulse every π / 3 in electrical angle based on the rising and falling points of the output pulses P 1 , P 2 , P 3 of the sensors 3A, 3B, 3C. P 4 is generated. The waveform at this time is shown in FIG. As shown in the figure, output pulses P 1 , P 2 ,
P 3 is configured so as to match the induced voltages U, V, W of the U-phase, V-phase, and W-phase of the stator winding, respectively, and P 4-0 , P 4-1 , P 4-1 in the figure, P 4-2 , P 4-3 , ... Are absolute position pulses.
【００１８】相対位置検出部IIは円板部５，センサ部６
ａ，６ｂ、正転／逆転パルス発生回路７及びカウンタ８
からなるロータリエンコーダで構成したものである。The relative position detector II includes a disc portion 5 and a sensor portion 6.
a, 6b, forward / reverse rotation pulse generation circuit 7 and counter 8
The rotary encoder is composed of.
【００１９】円板部５は周方向に亘り多数のスリットが
等間隔で形成してあり、π／３毎の絶対位置の間の細分
割された回転角度を検出するよう回転軸１に固着してあ
る。The disk portion 5 has a large number of slits formed at equal intervals in the circumferential direction, and is fixed to the rotary shaft 1 so as to detect a subdivided rotation angle between absolute positions of π / 3. There is.
【００２０】センサ部６ａ，６ｂは円板部５のスリット
を透過する光に感応してこれを電気信号に変換するもの
で、回転軸１の回転量に応じた数のＡ相パルス信号Ｐ5
とＢ相パルス信号Ｐ6 をそれぞれ送出する。Ａ相パルス
信号Ｐ5 とＢ相パルス信号Ｐ 6 とは、周波数は同じであ
るが位相がπ／２ずれており、したがってＡ相パルス信
号Ｐ5 とＢ相パルスＰ6 との関係に基づき回転軸１の回
転方向を検出し得る。The sensor portions 6a and 6b are slits in the disc portion 5.
That converts light into an electric signal in response to light passing through
Then, the number of A-phase pulse signals P corresponding to the amount of rotation of the rotary shaft 1Five
And B-phase pulse signal P6Respectively. Phase A pulse
Signal PFiveAnd B-phase pulse signal P 6And have the same frequency
However, the phase is shifted by π / 2, so the A-phase pulse signal
Issue PFiveAnd B-phase pulse P6Based on the relationship with
The rolling direction can be detected.
【００２１】正転／逆転パルス発生回路７はＡ相パルス
信号Ｐ5 及びＢ相パルス信号Ｐ6 に基づき回転軸１の回
転方向を検出するとともに、センサ部６ａ，６ｂが発生
したパルス数に応じた加算パルス信号Ｐ7 若しくは減算
パルス信号Ｐ8 を送出する。本実施例においては、円板
部５の１回転で７２０個のＡ，Ｂ相パルス信号Ｐ5 ，Ｐ
6 が発生するように構成してあるが、これでは３６０°
／７２０パルス＝０．５／１パルスと精度が充分ではな
いため、正転／逆転パルス発生回路７ではＡ相若しくは
Ｂ相パルス信号Ｐ5 ，Ｐ6 を４逓倍、すなわちＡ相若し
くはＢ相パルス信号Ｐ5 ，Ｐ6 の周波数を４倍に上げた
加減算パルス信号Ｐ7 ，Ｐ8 としている。The forward / reverse rotation pulse generation circuit 7 detects the rotation direction of the rotary shaft 1 based on the A-phase pulse signal P 5 and the B-phase pulse signal P 6 and also determines the number of pulses generated by the sensor units 6a and 6b. The addition pulse signal P 7 or the subtraction pulse signal P 8 is transmitted. In this embodiment, 720 A / B phase pulse signals P 5 and P are generated by one rotation of the disk portion 5.
It is configured to generate 6 but this is 360 °
/ 720 pulse = 0.5 / 1 pulse, which is not sufficiently accurate, so that the forward / reverse rotation pulse generator circuit 7 multiplies the A-phase or B-phase pulse signals P 5 , P 6 by four, that is, the A-phase or B-phase pulse. The frequencies of the signals P 5 and P 6 are quadrupled to be addition / subtraction pulse signals P 7 and P 8 .
【００２２】カウンタ８には絶対位置パルスＰ4 の入力
毎に所定の値がプリセットされ、さらに入力された加減
算パルス信号Ｐ7 ，Ｐ8 のパルス数が所定値に対し加算
若しくは減算される。すなわち、正転時には絶対位置か
らの回転位置が所定値に加算したパルスの数として、ま
た逆転時には絶対位置からの回転位置が所定位置から減
算したパルスの数としてカウントされる。かくしてカウ
ンタ８は絶対位置間の相対位置情報であるカウント信号
Ｐ9 を送出する。A predetermined value is preset in the counter 8 every time the absolute position pulse P 4 is input, and the number of pulses of the input addition / subtraction pulse signals P 7 and P 8 is added or subtracted from the predetermined value. That is, the rotational position from the absolute position is counted as the number of pulses added to the predetermined value during the forward rotation, and the rotational position from the absolute position is counted as the number of pulses subtracted from the predetermined position during the reverse rotation. Thus, the counter 8 outputs the count signal P 9 which is the relative position information between the absolute positions.
【００２３】このように、プリセット値から加減算パル
ス信号Ｐ7 ，Ｐ8 に基づくパルス数を加減算することに
より演算部III ではプリセット値とカウント値との差を
検出することで正、逆転の判別をする事なく相対的な位
置情報を得ることができる。As described above, the arithmetic unit III detects the difference between the preset value and the count value by adding / subtracting the number of pulses based on the addition / subtraction pulse signals P 7 and P 8 from the preset value, and thereby discriminating between the forward and reverse directions. It is possible to obtain relative position information without doing.
【００２４】演算部III は高速演算プロセッサ（ＤＳ
Ｐ）で構成してあり、センサ３Ａ，３Ｂ，３Ｃの出力パ
ルスＰ1 ，Ｐ2 ，Ｐ3 を処理してＵ相巻線と一致した位
置を０°とした電気角で６０°毎の絶対位置を求めると
ともにカウント信号Ｐ9 に基づき相対位置を求める。The arithmetic unit III is a high-speed arithmetic processor (DS
P), the output pulses P 1 , P 2 , P 3 of the sensors 3A, 3B, 3C are processed to make the position coincident with the U-phase winding 0 °, and the absolute angle every 60 °. The position is obtained and the relative position is obtained based on the count signal P 9 .
【００２５】具体的には、表１のテーブルにより絶対位
置を求める。なお、このテーブルは円板１の時計方向を
正に採り、出力パルスＰ1 ，Ｐ2 ，Ｐ3 の「Low 状態」
を「１」に、また「High状態」を「０」に対応させたも
のである。Specifically, the absolute position is obtained from the table shown in Table 1. In this table, the clockwise direction of the disk 1 is taken as positive, and the output pulses P 1 , P 2 , P 3 are in the "Low state".
To "1" and "High state" to "0".
【００２６】[0026]
【表１】 [Table 1]
【００２７】また、相対位置θ1 は次式［数１］で求め
る。Further, the relative position θ 1 is obtained by the following equation [Equation 1].
【００２８】[0028]
【数１】 [Equation 1]
【００２９】したがって、回転位置は、絶対位置θ0 と
相対位置θ1 との和として求まる。このとき、θ1 ＜
０、すなわち逆転時には絶対位置として前記表１に基づ
いて求めた絶対位置θ1 に６０°を加算した値を用い
る。Therefore, the rotational position is obtained as the sum of the absolute position θ 0 and the relative position θ 1 . At this time, θ 1 <
0, that is, a value obtained by adding 60 ° to the absolute position θ 1 obtained based on Table 1 is used as the absolute position during reverse rotation.
【００３０】[0030]
【発明の効果】以上実施例とともに具体的に説明したよ
うに、本発明によれば次の効果が得られる。As described above in detail with reference to the embodiments, according to the present invention, the following effects can be obtained.
【００３１】1) 本発明により、安価かつ簡単な構成に
より、エンコーダパルスの分解能の精度で絶対位置の検
出が可能となる。1) According to the present invention, the absolute position can be detected with the accuracy of the resolution of the encoder pulse by the inexpensive and simple structure.
【００３２】2) 高速回転（10,000rpm 以上）において
も絶対位置検出が可能となる。2) The absolute position can be detected even at high speed (10,000 rpm or more).
【００３３】3) π／３毎の絶対位置検出が可能であ
り、モータ始動時も回転子位置調整が不要になる。すな
わち、磁界の位置が把握できていない場合、始動ができ
ない事があるが、本願発明によればπ／３以内で位置を
検出している結果、始動が可能となり回転子位置の調整
が不要になる。3) The absolute position can be detected every π / 3, and the rotor position adjustment becomes unnecessary even when the motor is started. That is, if the position of the magnetic field cannot be grasped, the starting may not be possible, but according to the present invention, the position is detected within π / 3, and as a result, the starting becomes possible and the adjustment of the rotor position becomes unnecessary. Become.
【００３４】4) 高精度検出が可能であり、ベクトル制
御が可能となる。4) High precision detection is possible and vector control is possible.
【図１】本発明の実施例を示すブロック線図。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】絶対位置検出部Ｉの円板２及びセンサ３Ａ，３
Ｂ，３Ｃを示す説明図。FIG. 2 is a diagram showing a disk 2 and sensors 3A, 3 of an absolute position detector I.
Explanatory drawing which shows B and 3C.
【図３】絶対位置検出部Ｉのセンサ３Ａの出力信号とＵ
相巻線に誘起される電圧波形の関係を示す波形図。FIG. 3 is an output signal of a sensor 3A of an absolute position detector I and U
The wave form diagram which shows the relationship of the voltage waveform induced to a phase winding.
【図４】絶対位置検出部Ｉのセンサ３Ａ，３Ｂ，３Ｃの
出力パルスＰ1 ，Ｐ2 ，Ｐ3 とＵ，Ｖ，Ｗ相電圧の位相
関係を示す波形図。FIG. 4 is a waveform diagram showing a phase relationship between output pulses P 1 , P 2 , P 3 of the sensors 3A, 3B, 3C of the absolute position detector I and U, V, W phase voltages.
Ｉ 絶対位置検出部 II 相対位置検出部 III 演算部 １ 回転軸 ２ 円板 ２ａ 凸部 ２ｂ 凹部 ３Ａ，３Ｂ，３Ｃ センサ ５ 円板部 ６ａ，６ｂ センサ部 I Absolute position detection unit II Relative position detection unit III Calculation unit 1 Rotation axis 2 Disc 2a Convex part 2b Recessed part 3A, 3B, 3C Sensor 5 Disc part 6a, 6b Sensor part
Claims (4)
と異なる他の状態とが円周方向に関し隣接して交互に繰
返すように構成して回転電機の回転軸に固着した円板
と、 円周方向に関し機械角で相互に１２０°隔てた位置にそ
れぞれ配設して前記円板の回転に伴なう前記１つの状態
と他の状態とを検出し、各状態に対応する２値信号をそ
れぞれ送出する３個のセンサと、 前記回転軸の正転，逆転を表わす情報とともに前記絶対
位置間を細分割する回転角度に応じた数のパルスを発生
するようこの回転軸に取付けた円板部及びこの円板部に
近接して配設したセンサ部を有するロータリエンコーダ
と、 前記３個のセンサが送出する２値信号の組合せにより電
気角で６０°毎の前記回転軸の絶対位置を検出するとと
もに、この絶対位置を表わす信号と前記ロータリエンコ
ーダのセンサ部の出力信号である隣接する絶対位置間の
相対位置を表わす信号とを処理して前記回転軸の回転位
置を演算する演算手段とを有することを特徴とする回転
電機の回転位置検出装置。1. A disc fixed to a rotating shaft of a rotating electric machine, configured so that one state and another state different from each other at 180 electrical degrees are repeated alternately adjacent to each other in the circumferential direction. , The two states corresponding to each state are detected by arranging them at positions separated from each other by a mechanical angle of 120 ° in the circumferential direction and detecting the one state and the other state accompanying the rotation of the disc. Three sensors that respectively send out signals, and a circle attached to this rotary shaft so as to generate a number of pulses corresponding to a rotation angle that subdivides between the absolute positions together with information indicating normal rotation and reverse rotation of the rotary shaft. By combining a rotary encoder having a plate portion and a sensor portion arranged in the vicinity of the disc portion, and a binary signal transmitted by the three sensors, the absolute position of the rotary shaft is calculated every 60 ° in electrical angle. As well as detecting, Rotation of the rotary electric machine, comprising: processing means for processing a signal representing a relative position between adjacent absolute positions, which is an output signal of the sensor part of the rotary encoder, to calculate a rotation position of the rotary shaft. Position detection device.
形成した凸部により形成するとともに他の状態は凸部に
円周方向で隣接する凹部により形成したことを特徴とす
る［請求項１］に記載する回転電機の回転位置検出装
置。2. The one state is formed by a convex portion formed on the outermost peripheral portion of the disc, and the other state is formed by a concave portion that is adjacent to the convex portion in the circumferential direction. Item 1] is a rotational position detecting device for a rotating electric machine.
うそのセンサ部の出力信号であるパルス信号をｎ逓倍
（ｎは２以上の自然数）して処理することを特徴とする
［請求項１］に記載する回転電機の回転位置検出装置。3. The pulse signal, which is the output signal of the sensor unit, is multiplied by n (n is a natural number of 2 or more) and processed so as to improve the resolution of the encoder. Rotational position detection device for rotating electric machine.
子の電機子巻線の各相に誘起される誘起電圧とそれぞれ
位相が一致するように構成したことを特徴とする［請求
項１］に記載する回転電機の回転位置検出装置。4. The binary signal sent from each sensor is configured so as to be in phase with the induced voltage induced in each phase of the armature winding of the stator. ] The rotation position detection apparatus of the rotary electric machine described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6189163A JPH0854205A (en) | 1994-08-11 | 1994-08-11 | Rotational position detector for electric rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6189163A JPH0854205A (en) | 1994-08-11 | 1994-08-11 | Rotational position detector for electric rotating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0854205A true JPH0854205A (en) | 1996-02-27 |
Family
ID=16236519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6189163A Withdrawn JPH0854205A (en) | 1994-08-11 | 1994-08-11 | Rotational position detector for electric rotating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0854205A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001336951A (en) * | 2000-05-29 | 2001-12-07 | Shinko Electric Co Ltd | Rotational position detecting device and method |
| EP1235048A1 (en) * | 2001-02-09 | 2002-08-28 | Delphi Technologies, Inc. | Angular position sensor assembly for a vehicle generator shaft |
| WO2007077389A2 (en) | 2006-01-06 | 2007-07-12 | Aktiebolaget Skf | System for detecting an absolute angular position by differential comparison, rolling bearing and rotary machine |
| US7733044B2 (en) | 2005-02-24 | 2010-06-08 | Mitsubishi Heavy Industries, Ltd. | IPM motor system and control method thereof |
| KR20190122238A (en) * | 2017-03-29 | 2019-10-29 | 아즈빌주식회사 | Rotation control device |
| KR20200026096A (en) * | 2018-08-29 | 2020-03-10 | 아즈빌주식회사 | Rotation controlling device |
-
1994
- 1994-08-11 JP JP6189163A patent/JPH0854205A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001336951A (en) * | 2000-05-29 | 2001-12-07 | Shinko Electric Co Ltd | Rotational position detecting device and method |
| EP1235048A1 (en) * | 2001-02-09 | 2002-08-28 | Delphi Technologies, Inc. | Angular position sensor assembly for a vehicle generator shaft |
| US6538429B2 (en) | 2001-02-09 | 2003-03-25 | Delphi Technologies, Inc. | Angular position sensor assembly for a motor vehicle generator shaft |
| US7733044B2 (en) | 2005-02-24 | 2010-06-08 | Mitsubishi Heavy Industries, Ltd. | IPM motor system and control method thereof |
| WO2007077389A2 (en) | 2006-01-06 | 2007-07-12 | Aktiebolaget Skf | System for detecting an absolute angular position by differential comparison, rolling bearing and rotary machine |
| KR20190122238A (en) * | 2017-03-29 | 2019-10-29 | 아즈빌주식회사 | Rotation control device |
| KR20200026096A (en) * | 2018-08-29 | 2020-03-10 | 아즈빌주식회사 | Rotation controlling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20011106 |