JP6942319B2 - Parallel winding resolver - Google Patents

Parallel winding resolver Download PDF

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JP6942319B2
JP6942319B2 JP2017091264A JP2017091264A JP6942319B2 JP 6942319 B2 JP6942319 B2 JP 6942319B2 JP 2017091264 A JP2017091264 A JP 2017091264A JP 2017091264 A JP2017091264 A JP 2017091264A JP 6942319 B2 JP6942319 B2 JP 6942319B2
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小久江 幸二
幸二 小久江
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Tamagawa Seiki Co Ltd
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この発明は並列巻線レゾルバに関し、特に、並列に信号処理回路に接続されたコイルを備える並列巻線レゾルバに関する。 The present invention relates to a parallel winding resolver, and more particularly to a parallel winding resolver including a coil connected in parallel to a signal processing circuit.

従来のレゾルバの構造としては、例えば輪状ステータの内側との間にギャップパーミアンスの変化を形成するように成形されたロータを備えるVR型レゾルバの構成を、以下の特許文献1に記載された構成に適用したレゾルバを、図3として挙げることができる。すなわち、従来のレゾルバ1には、誘起される電圧がsin波形となるように定義された巻き数を持つ複数の巻線からなるsin巻線2と、誘起される電圧がcos波形となるように定義された巻き数を持つ複数の巻線からなるcos巻線3とが輪状ステータ4の各ティースに巻回され、励磁巻線5により前記sin巻線2と前記cos巻線3に誘起される電圧比から、ロータ6の角度を検出する。 As the structure of the conventional resolver, for example, the configuration of a VR-type resolver including a rotor formed so as to form a change in gap permeance with the inside of a ring-shaped stator has been changed to the configuration described in Patent Document 1 below. The applied resolver can be listed as FIG. That is, the conventional resolver 1 has a sin winding 2 composed of a plurality of windings having a number of turns defined so that the induced voltage has a sin waveform, and the induced voltage has a cos waveform. A cos winding 3 composed of a plurality of windings having a defined number of turns is wound around each tooth of the ring-shaped stator 4, and is induced in the sin winding 2 and the cos winding 3 by the exciting winding 5. The angle of the rotor 6 is detected from the voltage ratio.

特開2001−165703号公報Japanese Unexamined Patent Publication No. 2001-165703

上記のような従来のレゾルバでは、前記sin巻線2及び前記cos巻線3を構成する、各ティースに巻回された各巻線の巻き数は、前記sin巻線2及び前記cos巻線3に誘起される電圧を正弦波状に変化させるように、各ティースの位置に応じて決定されている。そのため、ティースの位置によっては巻き数が非常に少なくなるように決定された巻線が存在することとなり、該ティース位置における巻線は導線の巻回のためのスペースがあっても巻き数を大きくすることができず、また、電圧検出に利用できないという問題点があった。 In the conventional resolver as described above, the number of turns of each winding wound around each tooth constituting the sin winding 2 and the cos winding 3 is the same as that of the sin winding 2 and the cos winding 3. It is determined according to the position of each tooth so as to change the induced voltage in a sinusoidal manner. Therefore, depending on the position of the teeth, there is a winding determined so that the number of turns is very small, and the winding at the position of the teeth has a large number of turns even if there is a space for winding the conductor. There is a problem that it cannot be used for voltage detection.

また、前記sin巻線2と前記cos巻線3とは独立に巻回されるので、前記sin巻線2と前記cos巻線3との巻線順序により巻線間の電圧比のアンバランスや相互干渉が発生するという問題点があった。さらに、前記前記sin巻線2と前記cos巻線3との理想的な巻き数はティースの位置から決定される実数として求められるが、現実に各巻線の巻き数は整数でしか定義できないので、巻き数を整数化する際に論理的な有利化誤差が発生するという問題点があった。 Further, since the sin winding 2 and the cos winding 3 are wound independently, the voltage ratio between the windings may be unbalanced depending on the winding order of the sin winding 2 and the cos winding 3. There was a problem that mutual interference occurred. Further, the ideal number of turns of the sin winding 2 and the cos winding 3 is obtained as a real number determined from the position of the teeth, but in reality, the number of turns of each winding can only be defined as an integer. There is a problem that a logical advantage error occurs when the number of turns is converted to an integer.

この発明はこのような課題を解決するためになされたものであり、特に、各ティースに個々に巻回された複数の検出巻線と、前記複数の検出巻線から出力される信号に基づいて前記ロータの角度位置を検出する信号処理部とを備え、前記複数の検出巻線は互いに並列に前記信号処理部に接続されており、前記信号処理部は、前記各検出巻線の位置に応じた係数を前記各検出巻線の信号に乗算するので、各巻線の巻き数をスペースの限り大きくすることができ、また、検出電圧ゲインを増加させることができ、さらに、巻線間の電圧比のアンバランスや相互干渉を無くすことができ、さらにまた、巻き数を整数化する際に有利化誤差を発生させないことができる。 The present invention has been made to solve such a problem, and in particular, based on a plurality of detection windings individually wound around each tooth and signals output from the plurality of detection windings. A signal processing unit for detecting the angular position of the rotor is provided, and the plurality of detection windings are connected to the signal processing unit in parallel with each other, and the signal processing unit responds to the position of each detection winding. Since the coefficient is multiplied by the signal of each of the detected windings, the number of turns of each winding can be increased as much as possible, the detected voltage gain can be increased, and the voltage ratio between the windings can be increased. It is possible to eliminate the imbalance and mutual interference of the above, and further, it is possible to prevent an advantage error when the number of turns is made into an integer.

この発明に係るレゾルバは、ロータと、周方向に等間隔で配置されるとともに前記ロータに向かって突出された複数のティースを有する輪状ステータと、前記各ティースに個々に巻回された複数の検出巻線と、前記複数の検出巻線から出力される信号に基づいて前記ロータの角度位置を検出する信号処理部とを備え、前記複数の検出巻線は、互いに並列に前記信号処理部に接続されており、前記信号処理部は、前記各検出巻線の位置に応じたsin信号生成用係数及びcos信号生成用係数が含まれている係数を前記各検出巻線の信号に乗算し、前記各検出巻線のsin信号及びcos信号を生成し、また、基準位置からm番目の前記ティースの信号に乗算される前記sin信号生成用係数Nsin(m)は、Nsin(m)=p・N・K・sin(θ+αw)で表され、但し、pはmが奇数の時に+1となりmが偶数のときに−1となる係数であり、Nは前記信号の最大値を調整する係数であり、Kはm番目の前記ティースの巻き数であり、θは1番目のティースとm番目の前記ティースとの間の角度であり、αwはオフセット角度であり、また、基準位置からm番目の前記ティースの信号に乗算される前記cos信号生成用係数Ncos(m)は、Ncos(m)=p・N・K・cos(θ+αw)で表され、但し、pはmが奇数の時に+1となりmが偶数のときに−1となる係数であり、Nは前記信号の最大値を調整する係数であり、Kはm番目の前記ティースの巻き数であり、θは1番目のティースとm番目の前記ティースとの間の角度であり、αwはオフセット角度である。 The resolver according to the present invention includes a rotor, a ring-shaped stator having a plurality of teeth arranged at equal intervals in the circumferential direction and projecting toward the rotor, and a plurality of detections individually wound around the teeth. A winding and a signal processing unit that detects an angular position of the rotor based on signals output from the plurality of detection windings are provided, and the plurality of detection windings are connected to the signal processing unit in parallel with each other. are, the signal processing unit multiplies a coefficient sin signal generating factor and cos signal generating coefficient according to the position of the respective detection coils is included in the signal of each detection coil, wherein generates a sin signal and a cos signal of each detection coil, or, from said reference position is multiplied by the m-th signal of the teeth sin signal generating coefficient N sin (m) is, N sin (m) = represented by p · N M · K m · sin (θ m + αw), where, p is a coefficient which becomes -1 when the +1 next m is an even number when m is an odd number, the maximum N M is the signal It is a coefficient for adjusting the value, K m is the number of turns of the m-th tooth, θ m is the angle between the first tooth and the m-th tooth, and αw is the offset angle. Further, the cos signal generation coefficient N cos (m) to be multiplied by the m-th signal of the teeth from the reference position is N cos (m) = p · N M · K m · cos (θ m + αw). represented, where, p is a coefficient which becomes -1 when +1 next m is an even number when m is an odd number, N M is a coefficient for adjusting the maximum value of the signal, K m is the m-th of the It is the number of turns of the teeth, θ m is the angle between the first tooth and the m-th said tooth, and αw is the offset angle.

本発明に係るレゾルバによれば、この発明に係るレゾルバは、ロータと、周方向に等間隔で配置されるとともに前記ロータに向かって突出された複数のティースを有する輪状ステータと、前記各ティースに個々に巻回された複数の検出巻線と、前記複数の検出巻線から出力される信号に基づいて前記ロータの角度位置を検出する信号処理部とを備え、前記複数の検出巻線は、互いに並列に前記信号処理部に接続されており、前記信号処理部は、各検出巻線の位置に応じた係数を各検出巻線の信号に乗算するので、部分巻線の巻き数をスペースの限り大きくすることができ、また、検出電圧ゲインを増加させることができ、また、巻線間の電圧比のアンバランスや相互干渉を無くすことができ、また、巻き数を整数化する際に有利化誤差を発生させないことができる。 According to the resolver according to the present invention, the resolver according to the present invention includes a rotor, a ring-shaped stator having a plurality of teeth arranged at equal intervals in the circumferential direction and protruding toward the rotor, and each of the teeth. The plurality of detection windings include a plurality of detection windings individually wound and a signal processing unit that detects an angular position of the rotor based on signals output from the plurality of detection windings. The signal processing unit is connected to the signal processing unit in parallel with each other, and the signal processing unit multiplies the signal of each detection winding by a coefficient corresponding to the position of each detection winding. It can be made as large as possible, the detected voltage gain can be increased, imbalance of voltage ratio between windings and mutual interference can be eliminated, and it is advantageous when the number of turns is made into an integer. It is possible not to generate a conversion error.

この発明の実施の形態に係るレゾルバの概略図である。It is the schematic of the resolver which concerns on embodiment of this invention. 図1に示すレゾルバの回路構成の説明図である。It is explanatory drawing of the circuit structure of the resolver shown in FIG. 従来のレゾルバの概略図である。It is a schematic diagram of a conventional resolver.

以下、この発明の実施の形態を添付図面の図1〜図2に基づいて説明する。なお、従来例と同一又は同等部分には同一符号を付して説明する。
図1は、この発明の実施の形態に係るレゾルバ構造の概略図である。レゾルバ10は、VR型レゾルバと呼ばれるレゾルバであり、輪状ステータ4と、電磁鋼板等の強磁性体で成形され前記輪状ステータ4の内側で回転軸7を中心に回転自在であるロータ6が設けられている。前記ロータ6は、前記輪状ステータ4の内側との間にギャップパーミアンスの変化を形成するように成形されている。
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2 of the accompanying drawings. The same or equivalent parts as those of the conventional example will be described with the same reference numerals.
FIG. 1 is a schematic view of a resolver structure according to an embodiment of the present invention. The resolver 10 is a resolver called a VR type resolver, and is provided with a ring-shaped stator 4 and a rotor 6 formed of a ferromagnetic material such as an electromagnetic steel plate and rotatable about a rotation shaft 7 inside the ring-shaped stator 4. ing. The rotor 6 is formed so as to form a change in gap permeance with the inside of the ring-shaped stator 4.

前記輪状ステータ4には、周方向に等間隔で配置されるとともに、径方向Aの内側すなわち前記ロータ6に向かって突出した複数のティース40が設けられている。前記ティース40は、輪状絶縁カバー41に覆われており、前記輪状絶縁カバー41を介して励磁巻線42及び検出巻線43が前記各ティース40に個々に巻回されている。前記励磁巻線42は、前記各ティース40に対してそれぞれ同一の巻き数に巻回され、且つ前記ティース40のうち基準となる前記ティース40から数えて奇数番目の前記ティース40と偶数番目の前記ティース40とで巻線方向が逆になるように巻回されている。 The ring-shaped stator 4 is provided with a plurality of teeth 40 that are arranged at equal intervals in the circumferential direction and that protrude inside the radial direction A, that is, toward the rotor 6. The teeth 40 are covered with a ring-shaped insulating cover 41, and an exciting winding 42 and a detection winding 43 are individually wound around the teeth 40 via the ring-shaped insulating cover 41. The exciting winding 42 is wound in the same number of turns for each of the teeth 40, and the odd-numbered teeth 40 and the even-numbered even-numbered teeth 40 counted from the reference teeth 40 of the teeth 40. It is wound so that the winding direction is opposite to that of the teeth 40.

図2は、図1に示した前記レゾルバ10の回路構成の説明図であり、前記輪状ステータ4に前記ティース40が4つ設けられている場合の前記レゾルバ10が記載されている。この場合は、前記ティース40として、ティース401,402,403,404が設けられている。そして、前記ティース401,402,403,404には、前記検出巻線43として検出巻線431,432,433,434がそれぞれ巻回されている。また、前記励磁巻線42は省略されており図示されていない。 FIG. 2 is an explanatory diagram of the circuit configuration of the resolver 10 shown in FIG. 1, and describes the resolver 10 when four of the teeth 40 are provided on the ring-shaped stator 4. In this case, the teeth 40, 402, 403, and 404 are provided as the teeth 40. A detection winding 431, 432, 433, 434 is wound around the teeth 401, 402, 403, 404 as the detection winding 43, respectively. Further, the exciting winding 42 is omitted and is not shown.

前記検出巻線431,432,433,434は、互いに並列に信号処理部8に接続されている。前記信号処理部8は、アナログ回路又はディジタル回路で構成されており、前記検出巻線431,432,433,434からの出力信号にもとづいて、前記輪状ステータ4に対する前記ロータ6の角度、すなわち前記ロータ6の角度位置を検出する。 The detection windings 431, 432, 433, 434 are connected to the signal processing unit 8 in parallel with each other. The signal processing unit 8 is composed of an analog circuit or a digital circuit, and the angle of the rotor 6 with respect to the ring-shaped stator 4, that is, the said The angular position of the rotor 6 is detected.

ここで、前記ティース401を、前記レゾルバ10における前記ティース40のうち、基準となる1番目とする。また、前記ティース402,403,404を、それぞれ2番目、3番目、4番目とする。前記信号処理部8では、m番目のティースからの出力信号に対するsin信号用の係数として式(1)に示すNsin(m)を計算する。

Figure 0006942319
また、前記信号処理部8では、m番目のティースからの出力信号に対するcos信号用の係数として式(2)に示すNcos(m)を計算する。
Figure 0006942319
但し、pはmが奇数の時に+1となりmが偶数のときに−1となる係数であり、Nは前記信号の最大値を調整する係数であり、Kはm番目の前記ティースの巻き数であり、θは1番目のティースとm番目の前記ティースとの間の角度であり、αwはオフセット角度である。 Here, the teeth 401 will be the first reference among the teeth 40 in the resolver 10. Further, the teeth 402, 403, and 404 are designated as the second, third, and fourth, respectively. The signal processing unit 8 calculates N sin (m) represented by the equation (1) as a coefficient for the sin signal with respect to the output signal from the m-th tooth.
Figure 0006942319
Further, the signal processing unit 8 calculates N cos (m) represented by the equation (2) as a coefficient for the cos signal with respect to the output signal from the m-th tooth.
Figure 0006942319
Here, p is a coefficient which becomes -1 when the +1 next m is an even number when m is an odd number, N M is a coefficient for adjusting the maximum value of the signal, K m is the winding of the m-th of said teeth It is a number, θ m is the angle between the first tooth and the m-th said tooth, and αw is an offset angle.

次に、前記信号処理部8により、係数Nsin(m)及びNcos(m)が前記検出巻線431,432,433,434の出力値に乗算される。次に、前記ロータ6の角度位置がθであるときに、励磁電流の変化率に応じて、sin信号電圧振幅のEsin(θ)と、cos信号電圧振幅のEcos(θ)が、以下の式(3)及び式(4)を満足するように前記信号処理部8で生成される。

Figure 0006942319
Figure 0006942319
Next, the signal processing unit 8 multiplies the coefficients N sin (m) and N cos (m) by the output values of the detection windings 431, 432, 433, 434. Next, when the angular position of the rotor 6 is θ r , E sinr ) of the sin signal voltage amplitude and E cosr ) of the cos signal voltage amplitude are obtained according to the rate of change of the exciting current. Is generated by the signal processing unit 8 so as to satisfy the following equations (3) and (4).
Figure 0006942319
Figure 0006942319

次に、Esin(θ)とEcos(θ)との比を前記信号処理部8が計算することにより、前記ロータ6の角度位置θを決定することができる。 Next, the signal processing unit 8 can calculate the ratio of E sinr ) and Ecosr ) to determine the angular position θ r of the rotor 6.

このように、この発明の実施の形態に係るレゾルバでは、前記ロータ6と、周方向に等間隔で配置されるとともに前記ロータ6に向かって突出された複数の前記ティース401,402,403,404を有する前記輪状ステータ4と、前記各ティース401,402,403,404に個々に巻回された複数の前記検出巻線431,432,433,434と、前記複数の検出巻線431,432,433,434から出力される信号に基づいて前記ロータ6の角度位置θを検出する前記信号処理部8とを備え、前記複数の検出巻線431,432,433,434は、互いに並列に前記信号処理部8に接続されており、前記信号処理部8は、前記各検出巻線431,432,433,434の位置に応じた係数を前記各検出巻線431,432,433,434の信号に乗算し、また、前記係数はsin信号生成用係数と、cos信号生成用係数とが含まれており、基準位置からm番目の前記ティース401,402,403,404の信号に乗算される前記sin信号生成用係数Nsin(m)は、式(1)に示され、基準位置からm番目の前記ティースの信号に乗算される前記cos信号生成用係数Ncos(m)は、式(2)に示されるので、前記各検出巻線431,432,433,434の巻き数をスペースの限り大きくすることができ、また、検出電圧ゲインを増加させることができ、また、前記各検出巻線431,432,433,434間の電圧比のアンバランスや相互干渉を無くすことができ、また、巻き数を整数化する際に有利化誤差を発生させないことができる。 As described above, in the resolver according to the embodiment of the present invention, the plurality of teeth 401, 402, 403, 404 which are arranged at equal intervals in the circumferential direction and protrude toward the rotor 6 with the rotor 6. The ring-shaped stator 4 having the above, the plurality of detection windings 431, 432, 433, 434 individually wound around the teeth 401, 402, 403, 404, and the plurality of detection windings 431, 432. and a said signal processing unit 8 for detecting the angular position theta r of the rotor 6 on the basis of a signal output from the 433, the plurality of detection coils 431, 432, 433, and 434, the parallel to each other It is connected to the signal processing unit 8, and the signal processing unit 8 sets a coefficient corresponding to the position of each detection winding 431,432,433,434 to the signal of each detection winding 431,432,433,434. The coefficient includes a sin signal generation coefficient and a cos signal generation coefficient, and is multiplied by the mth signal of the teeth 401, 402, 403, 404 from the reference position. The sin signal generation coefficient N sin (m) is shown in the equation (1), and the cos signal generation coefficient N cos (m) to be multiplied by the signal of the teeth at the mth position from the reference position is the equation (2). ), The number of turns of each detection winding 431, 432, 433, 434 can be increased as much as possible, the detection voltage gain can be increased, and each detection winding can be increased. It is possible to eliminate the imbalance and mutual interference of the voltage ratio between 431, 432, 433, and 434, and it is possible to prevent an advantage error when the number of turns is made into an integer.

また、この実施の形態では、180度対向した前記ティース401と前記ティース403とに誘起される電圧の差を、前記信号処理部8で検出することで、前記レゾルバ10の偏心誤差を補正することができる。さらに、同じように180度対向した前記ティース402と前記ティース404とに誘起される電圧の差を、前記信号処理部8で検出することで、前記レゾルバ10の偏心誤差を補正することができる。 Further, in this embodiment, the eccentricity error of the resolver 10 is corrected by detecting the difference in voltage induced between the teeth 401 and the teeth 403 facing 180 degrees by the signal processing unit 8. Can be done. Further, the eccentricity error of the resolver 10 can be corrected by detecting the difference in voltage induced between the teeth 402 and the teeth 404 facing 180 degrees in the same manner by the signal processing unit 8.

なお、この実施の形態では前記ティース40及び前記検出巻線43が4つずつ設けられている場合について説明したが、4つ以外の任意の前記ティース40及び前記検出巻線43が設けられていてもよく、その場合でも全ての前記各検出巻線43は互いに並列に前記信号処理部8に接続される。その場合においても、sin信号用の係数Nsin(m)と、cos信号用の係数Ncos(m)と、sin信号振幅のEsin(θ)と、cos信号振幅のEcos(θ)とが前記信号処理部8において計算され、前記ロータ6の角度位置θを決定することができる。 In this embodiment, the case where the teeth 40 and the detection windings 43 are provided by four each is described, but any of the teeth 40 and the detection windings 43 other than the four are provided. Even in that case, all the detection windings 43 are connected to the signal processing unit 8 in parallel with each other. Even in that case, the coefficient N sin (m) for the sin signal, the coefficient N cos (m) for the cos signal, the sin signal amplitude E sinr ), and the cos signal amplitude E cosr). ) are calculated in the signal processing unit 8 can determine the angular position theta r of the rotor 6.

また、この実施の形態における前記レゾルバ10はVR型レゾルバであったが、前記検出巻線43から正弦波形を出力するレゾルバであれば、例えば前記ロータ6に励磁巻線を設けたレゾルバや、前記ロータ6に永久磁石を設けたレゾルバや、アキシャル型のレゾルバや、リニア型のレゾルバ等の、任意の構成のレゾルバであってもよい。さらに、前記ロータ6の回転軸7は、前記輪状ステータ4に対して同心の状態で設けられていてもよいし、偏心の状態で設けられていてもよい。さらにまた、前記ロータ6は軸倍角が6Xであるように成形されていたが、他の軸倍角であるロータであってもよい。 Further, the resolver 10 in this embodiment is a VR type resolver, but if it is a resolver that outputs a sinusoidal waveform from the detection winding 43, for example, a resolver in which an exciting winding is provided in the rotor 6 or the above. A resolver having an arbitrary configuration such as a resolver provided with a permanent magnet in the rotor 6, an axial type resolver, a linear type resolver, or the like may be used. Further, the rotating shaft 7 of the rotor 6 may be provided concentrically with respect to the ring-shaped stator 4, or may be provided in an eccentric state. Furthermore, although the rotor 6 is molded so that the shaft double angle is 6X, it may be a rotor having another shaft double angle.

なお、本発明によるレゾルバの要旨としては、以下の通りである、すなわち、前記ロータ6と、周方向に等間隔で配置されるとともに前記ロータ6に向かって突出された複数の前記ティース401,402,403,404を有する前記輪状ステータ4と、前記各ティース401,402,403,404に個々に巻回された複数の前記検出巻線431,432,433,434と、前記複数の検出巻線431,432,433,434から出力される信号に基づいて前記ロータ6の角度位置を検出する前記信号処理部8とを備え、前記複数の検出巻線431,432,433,434は、互いに並列に前記信号処理部8に接続されており、前記信号処理部8は、前記各検出巻線431,432,433,434の位置に応じた係数を前記各検出巻線431,432,433,434の信号に乗算し、また、前記係数はsin信号生成用係数と、cos信号生成用係数とが含まれており、基準位置からm番目の前記ティース401,402,403,404の信号に乗算される前記sin信号生成用係数Nsin(m)は、前記sin信号生成用係数Nsin(m)は、Nsin(m)=p・N・K・sin(θ+αw)で表され、但し、pはmが奇数の時に+1となりmが偶数のときに−1となる係数であり、Nは前記信号の最大値を調整する係数であり、Kはm番目の前記ティースの巻き数であり、θは1番目のティースとm番目の前記ティースとの間の角度であり、αwはオフセット角度であり、また、基準位置からm番目の前記ティース401,402,403,404の信号に乗算される前記cos信号生成用係数Ncos(m)は、Ncos(m)=p・N・K・cos(θm+αw)で表され、但し、pはmが奇数の時に+1となりmが偶数のときに−1となる係数であり、Nは前記信号の最大値を調整する係数であり、Kはm番目の前記ティースの巻き数であり、θは1番目のティースとm番目の前記ティースとの間の角度であり、αwはオフセット角度である。 The gist of the resolver according to the present invention is as follows, that is, a plurality of the teeth 401, 402 which are arranged at equal intervals in the circumferential direction and protrude toward the rotor 6. , 403, 404, the plurality of detection windings 431, 432, 433, 434 individually wound around the teeth 401, 402, 403, 404, and the plurality of detection windings. The signal processing unit 8 that detects the angular position of the rotor 6 based on the signal output from 431, 432, 433, 434 is provided, and the plurality of detection windings 431, 432, 433, 434 are parallel to each other. The signal processing unit 8 is connected to the signal processing unit 8, and the signal processing unit 8 sets a coefficient according to the position of each detection winding 431,432,433,434 according to the position of each detection winding 431,432,433,434. The coefficient includes a sin signal generation coefficient and a cos signal generation coefficient, and is multiplied by the mth signal of the teeth 401, 402, 403, 404 from the reference position. the sin signal generating coefficient N sin (m) that is the sin signal generating coefficient N sin (m) is represented by N sin (m) = p · N M · K m · sin (θ m + αw) , where, p is a coefficient which becomes -1 when the even number +1 becomes m when m is an odd number, N M is a coefficient for adjusting the maximum value of the signal, K m is the m-th of said teeth The number of turns, θ m is the angle between the first tooth and the mth tooth, αw is the offset angle, and the mth tooth from the reference position is 401, 402, 403, 404. The cos signal generation coefficient N cos (m) multiplied by the signal of is expressed by N cos (m) = p · N M · K m · cos (θm + αw), where p is when m is an odd number. +1 next m is a coefficient which becomes -1 when the even, N M is a coefficient for adjusting the maximum value of the signal, K m is the number of turns of the m-th of the teeth, the theta m 1 th Is the angle between the tees of 1 and the m-th tees, and αw is an offset angle.

本発明によるレゾルバは、ロータと、周方向に等間隔で配置されるとともにロータに向かって突出された複数のティースを有する輪状ステータと、各ティースに個々に巻回された複数の検出巻線と、複数の検出巻線から出力される信号に基づいてロータの角度位置を検出する信号処理部とを備え、複数の検出巻線は、互いに並列に信号処理部に接続されており、信号処理部は、各検出巻線の位置に応じた係数を各検出巻線の信号に乗算するので、各検出巻線の巻き数をスペースの限り大きくすることができ、また、検出電圧ゲインを増加させることができ、さらに、巻線間の電圧比のアンバランスや相互干渉を無くすことができ、さらにまた、巻き数を整数化する際に有利化誤差を発生させないことができる。 The resolver according to the present invention includes a rotor, a ring-shaped stator having a plurality of teeth arranged at equal intervals in the circumferential direction and protruding toward the rotor, and a plurality of detection windings individually wound around each tooth. , A signal processing unit that detects the angular position of the rotor based on the signals output from the plurality of detection windings is provided, and the plurality of detection windings are connected to the signal processing unit in parallel with each other, and the signal processing unit is provided. Multiplies the signal of each detection winding by a coefficient corresponding to the position of each detection winding, so that the number of turns of each detection winding can be increased as much as possible and the detection voltage gain can be increased. Further, it is possible to eliminate the imbalance of the voltage ratio between the windings and the mutual interference, and further, it is possible to prevent an advantage error when the number of turns is made into an integer.

4 輪状ステータ
6 ロータ
8 信号処理部
10 レゾルバ
40,401,402,403,404 ティース
43,431,432,433,434 検出巻線
sin(m) sin信号用の係数
cos(m) cos信号用の係数
4 Ring-shaped stator 6 Rotor 8 Signal processing unit 10 Resolver 40, 401, 402, 403, 404 Teeth 43,431,432,433,434 Detection winding N sin (m) Coefficient for sin signal N cos (m) cos signal Coefficient for

Claims (3)

ロータ(6)と、
周方向に等間隔で配置されるとともに前記ロータ(6)に向かって突出された複数のティース(40,401,402,403,404)を有する輪状ステータ(4)と、
前記各ティース(40,401,402,403,404)に個々に巻回された複数の検出巻線(43,431,432,433,434)と、
前記複数の検出巻線(43,431,432,433,434)から出力される信号に基づいて前記ロータ(6)の角度位置を検出する信号処理部(8)と
を備え、
前記複数の検出巻線(43,431,432,433,434)は、互いに並列に前記信号処理部(8)に接続されており、
前記信号処理部(8)は、前記各検出巻線(43,431,432,433,434)の位置に応じたsin信号生成用係数及びcos信号生成用係数が含まれている係数を前記各検出巻線(43,431,432,433,434)の信号に乗算し、前記各検出巻線(43,431,432,433,434)のsin信号及びcos信号を生成する
ことを特徴とするレゾルバ。
With the rotor (6)
A ring-shaped stator (4) having a plurality of teeth (40, 401, 402, 403, 404) arranged at equal intervals in the circumferential direction and protruding toward the rotor (6).
A plurality of detection windings (43,431,432,433,434) individually wound around each of the teeth (40, 401, 402, 403, 404), and
A signal processing unit (8) for detecting the angular position of the rotor (6) based on signals output from the plurality of detection windings (43,431,432,433,434) is provided.
The plurality of detection windings (43,431,432,433,434) are connected to the signal processing unit (8) in parallel with each other.
The signal processing unit (8) sets a coefficient including a sin signal generation coefficient and a cos signal generation coefficient according to the position of each detection winding (43,431,432,433,434). The signal of each detection winding (43,431,432,433,434) is multiplied to generate a sin signal and a cos signal of each detection winding (43,431,432,433,434). Resolver.
基準位置からm番目の前記ティース(40,401,402,403,404)の信号に乗算される前記sin信号生成用係数Nsin(m)は、
sin(m)=p・N・K・sin(θ+αw)
で表されることを特徴とする請求項に記載のレゾルバ。
但し、pはmが奇数の時に+1となりmが偶数のときに−1となる係数であり、Nは前記信号の最大値を調整する係数であり、Kはm番目の前記ティース(40,401,402,403,404)の巻き数であり、θは1番目の前記ティース(40,401,402,403,404)とm番目の前記ティースとの間の角度であり、αwはオフセット角度である。
The sin signal generation coefficient N sin (m) to be multiplied by the signal of the teeth (40, 401, 402, 403, 404) at the mth position from the reference position is
N sin (m) = p ・ N M・ K m・ sin (θ m + αw)
The resolver according to claim 1 , wherein the resolver is represented by.
Here, p is a coefficient which becomes -1 when the even number +1 becomes m when m is an odd number, N M is a coefficient for adjusting the maximum value of the signal, K m is the m-th of said teeth (40 , 401, 402, 403, 404), θ m is the angle between the first tooth (40, 401, 402, 403, 404) and the mth tooth, and α w is The offset angle.
基準位置からm番目の前記ティース(40,401,402,403,404)の信号に乗算される前記cos信号生成用係数Ncos(m)は、
cos(m)=p・N・K・cos(θ+αw)
で表されることを特徴とする請求項1又は2に記載のレゾルバ。
但し、pはmが奇数の時に+1となりmが偶数のときに−1となる係数であり、Nは前記信号の最大値を調整する係数であり、Kはm番目の前記ティースの巻き数であり、θは1番目のティース(40,401,402,403,404)とm番目の前記ティース(40,401,402,403,404)との間の角度であり、αwはオフセット角度である。
The cos signal generation coefficient N cos (m) to be multiplied by the signal of the teeth (40, 401, 402, 403, 404) at the mth position from the reference position is
N cos (m) = p ・ N M・ K m・ cos (θ m + αw)
The resolver according to claim 1 or 2 , wherein the resolver is represented by.
Here, p is a coefficient which becomes -1 when the +1 next m is an even number when m is an odd number, N M is a coefficient for adjusting the maximum value of the signal, K m is the winding of the m-th of said teeth It is a number, θ m is the angle between the first tooth (40,401,402,403,404) and the mth tooth (40,401,402,403,404), and αw is the offset. The angle.
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