JP2015094636A - Resolver excitation voltage amplitude automatic adjustment circuit structure, resolver, and resolver signal voltage amplitude adjustment method - Google Patents

Resolver excitation voltage amplitude automatic adjustment circuit structure, resolver, and resolver signal voltage amplitude adjustment method Download PDF

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JP2015094636A
JP2015094636A JP2013233445A JP2013233445A JP2015094636A JP 2015094636 A JP2015094636 A JP 2015094636A JP 2013233445 A JP2013233445 A JP 2013233445A JP 2013233445 A JP2013233445 A JP 2013233445A JP 2015094636 A JP2015094636 A JP 2015094636A
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resolver
excitation voltage
voltage amplitude
circuit
amplitude
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鈴木　健
Takeshi Suzuki
健 鈴木
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Tamagawa Seiki Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a resolver excitation voltage amplitude automatic adjustment circuit structure capable of automatically adjusting resolver excitation voltage amplitude so as to be an optimal amplitude to an R/D conversion circuit.SOLUTION: Resolver excitation voltage amplitude automatic adjustment circuit structure 10 is constituted of: a resolver signal level detection circuit 2 which detects amplitude of angular displacement information (a resolver signal) acquired by a resolver 1; and an excitation voltage generation circuit 3 to which a feedback value to be output from the resolver signal level detection circuit 2 is fed back. As for the resolver signal acquired by the resolver 1, amplitude thereof is detected in the resolver signal level detection circuit 2, the feedback value (detected amplitude) is output from the resolver signal level detection circuit 2 on the basis of detection of the amplitude, and excitation voltage amplitude is automatically adjusted by comparison of the feedback value with a target value by the excitation voltage generation circuit 3.

Description

本発明はレゾルバ励磁電圧振幅自動調整回路構造、レゾルバ、およびレゾルバ信号電圧振幅調整方法に係り、特に、Ｒ／Ｄ変換回路に対し最適な振幅となるようにレゾルバ励磁電圧振幅を自動的に調整することのできる、レゾルバ励磁電圧振幅自動調整回路構造、レゾルバ、およびレゾルバ信号電圧振幅調整方法に関するものである。   The present invention relates to a resolver excitation voltage amplitude automatic adjustment circuit structure, a resolver, and a resolver signal voltage amplitude adjustment method, and in particular, automatically adjusts a resolver excitation voltage amplitude to be an optimum amplitude for an R / D conversion circuit. The present invention relates to a resolver excitation voltage amplitude automatic adjustment circuit structure, a resolver, and a resolver signal voltage amplitude adjustment method.

レゾルバにおいてＳ／Ｎを大きく取るため、Ｒ／Ｄ変換回路へ入力するレゾルバ信号は、Ｒ／Ｄ変換回路が要求する最適な電圧振幅であることが望ましい。一方、レゾルバの個体ごとの変圧比のバラつき、回路基板に実装された実装部品の定数バラつき、ケーブル長によって異なる信号の減衰等の要因によって、Ｒ／Ｄ変換回路に到達するレゾルバ信号の出力は物理的な構成の違いや、個体ごとの特性の違いで変化することになる。これを解消するには、励磁電圧の出力部、レゾルバ信号入力部の回路定数等を、固定抵抗、もしくは半固定抵抗にて固定するか、または手動調整によって対応する必要がある。   In order to increase the S / N in the resolver, it is desirable that the resolver signal input to the R / D conversion circuit has an optimum voltage amplitude required by the R / D conversion circuit. On the other hand, the output of the resolver signal reaching the R / D converter circuit is physically due to factors such as the variation of the transformation ratio for each resolver, the constant variation of the mounted components mounted on the circuit board, and the attenuation of the signal that varies depending on the cable length. It changes with the difference of the general composition and the difference of the characteristic for each individual. In order to solve this problem, it is necessary to fix the circuit constants of the excitation voltage output unit and the resolver signal input unit with a fixed resistance or a semi-fixed resistance, or manually adjust the circuit constants.

レゾルバの出力電圧調整に関しては従来、複数の技術的提案がなされている。このうち後掲特許文献１には、検出信号に検出位置誤差が含まれていて検出誤差が大きいという従来のレゾルバの課題を解決する方法として、レゾルバの励磁巻線と検出巻線の基本波から高調波までの相互インダクタンスに係る検出位置誤差の要因を除去するための、補償回路を備えた構成が開示されている。つまり、検出された２相の検出信号に含まれる励磁信号成分から正弦波信号を加減算して検出誤差成分を取り除き、検出された２相の検出信号の振幅を一致させる演算を行い、検出された１相の検出信号に他方の検出信号を加減算することによって、それぞれの変調の位相を電気角で９０°にするというものである。   Conventionally, a plurality of technical proposals have been made for adjusting the output voltage of the resolver. Among them, in Patent Document 1 described later, as a method for solving the problem of the conventional resolver in which the detection position error is included in the detection signal and the detection error is large, the fundamental wave of the excitation winding and the detection winding of the resolver is used. A configuration including a compensation circuit for removing a factor of detection position error related to mutual inductance up to harmonics is disclosed. That is, the detection error component is removed by adding or subtracting the sine wave signal from the excitation signal component included in the detected two-phase detection signal, and the calculation is performed to match the amplitude of the detected two-phase detection signal. By adding / subtracting the other detection signal to / from one phase detection signal, the phase of each modulation is made 90 ° in electrical angle.

また後掲特許文献２には、一相励磁二相出力方式のレゾルバと、その出力アナログ信号をデジタル信号に変換するレゾルバ−デジタル・コンバータとからなる回転位置検出装置において、レゾルバの二相出力間の電圧信号のバラつきを除去し、Ｒ−Ｄコンバータによる演算精度を向上させる方法として、レゾルバとレゾルバ−デジタル・コンバータとの間に二相出力電圧の最大振幅を均等に調整する調整回路を設ける構成が開示されている。   Further, in Patent Document 2 described later, in a rotational position detection device comprising a resolver of a single-phase excitation two-phase output system and a resolver-digital converter that converts the output analog signal into a digital signal, the two-phase output of the resolver is As a method for removing the variation of the voltage signal and improving the calculation accuracy by the RD converter, a configuration in which an adjustment circuit for evenly adjusting the maximum amplitude of the two-phase output voltage is provided between the resolver and the resolver-digital converter. Is disclosed.

特許３２３０６９０号公報「位置検出装置」（権利消滅）Japanese Patent No. 3230690 “Position detection device” 特開平１１−１６００９９号公報「回転位置検出装置」（みなし取下）Japanese Patent Laid-Open No. 11-16999 “Rotating position detection device” (deemed withdrawal)

さて上述したように、従来、Ｒ／Ｄ変換回路に到達するレゾルバ信号の出力変化に対しては、励磁電圧の出力部やレゾルバ信号入力部の回路定数等を固定抵抗もしくは半固定抵抗にて固定するか、または手動調整が行われる。しかし、制御しようとするレゾルバの電気特性によって個々に定数を調整しなくてはならず、手間がかかり煩雑である。   As described above, conventionally, with respect to changes in the output of the resolver signal reaching the R / D converter circuit, the circuit constants of the excitation voltage output part and the resolver signal input part are fixed with a fixed resistor or a semi-fixed resistor. Or manual adjustments are made. However, the constants must be individually adjusted according to the electrical characteristics of the resolver to be controlled, which is troublesome and cumbersome.

また、接続するケーブルの電気特性によっても、個々に定数を調整する必要がある。しかも、さまざまな電気的特性に影響を与える要因によって最適な回路定数は変化するため、使用するレゾルバやケーブル長の違い等、種々の仕様の違いによってセンサ設置後に回路定数を個別に設定しなくてはならず、容易ではない。   Moreover, it is necessary to individually adjust the constant depending on the electrical characteristics of the cable to be connected. In addition, since the optimum circuit constants change depending on factors that affect various electrical characteristics, the circuit constants need not be set individually after sensor installation due to differences in various specifications such as the resolver used and the cable length. It is not easy.

そこで本発明が解決しようとする課題は、かかる従来技術の問題点をなくし、Ｒ／Ｄ変換回路に対し最適な振幅となるようにレゾルバ励磁電圧振幅を自動的に調整することのできる、レゾルバ励磁電圧振幅自動調整回路構造、レゾルバ、およびレゾルバ信号電圧振幅調整方法を提供することである。   Therefore, the problem to be solved by the present invention is to eliminate the problems of the prior art, and to resolver excitation voltage capable of automatically adjusting the resolver excitation voltage amplitude so as to have an optimum amplitude for the R / D conversion circuit. To provide an automatic voltage amplitude adjustment circuit structure, a resolver, and a resolver signal voltage amplitude adjustment method.

つまり、使用するレゾルバやケーブル長の違い、その他電気的特性に影響を与える要因に対し、センサの設置前後に関わらず基板の回路定数を個別に調整する必要がなく、それにより、Ｒ／Ｄ変換回路へのレゾルバ信号電圧振幅を常に一定にすることができ、レゾルバ信号の電圧振幅について常にＳ／Ｎを最良の状態にすることのできる、レゾルバ励磁電圧振幅自動調整回路構造、レゾルバ、およびレゾルバ信号電圧振幅調整方法を提供することである。   In other words, it is not necessary to individually adjust the circuit constants of the board regardless of before and after the installation of the sensor for differences in the resolver used, cable length, and other factors that affect the electrical characteristics, thereby enabling R / D conversion. Resolver excitation voltage amplitude automatic adjustment circuit structure, resolver, and resolver signal that can always make resolver signal voltage amplitude to the circuit constant, and can always have the best S / N for the voltage amplitude of resolver signal It is to provide a voltage amplitude adjustment method.

本願発明者は上記課題について検討した結果、レゾルバ信号の入力回路部の電圧振幅を励磁電圧発生回路にフィードバックし、それにより励磁電圧発生回路が励磁電圧振幅を自動調整する構成によって課題解決できることを見出し、これに基づいて本発明を完成するに至った。すなわち、上記課題を解決するための手段として本願で特許請求される発明、もしくは少なくとも開示される発明は、以下の通りである。   As a result of studying the above problems, the present inventors have found that the voltage amplitude of the resolver signal input circuit section is fed back to the excitation voltage generation circuit, whereby the problem can be solved by a configuration in which the excitation voltage generation circuit automatically adjusts the excitation voltage amplitude. Based on this, the present invention has been completed. That is, the invention claimed in the present application, or at least the disclosed invention, as means for solving the above-described problems is as follows.

〔１〕 レゾルバが取得した角度変位情報（以下、「レゾルバ信号」という。）の振幅を検出するレゾルバ信号レベル検出回路と、該レゾルバ信号レベル検出回路から出されるフィードバック値がフィードバックされる励磁電圧発生回路とからなるレゾルバ励磁電圧振幅自動調整回路構造であって、該励磁電圧発生回路は励磁電圧振幅を自動調整するように構成されていることを特徴とする、レゾルバ励磁電圧振幅自動調整回路構造。
〔２〕 前記励磁電圧発生回路においては、前記フィードバック値と目標値とが比較されることにより励磁電圧振幅が自動調整されることを特徴とする、〔１〕に記載のレゾルバ励磁電圧振幅自動調整回路構造。
〔３〕 前記レゾルバ信号レベル検出回路は、整流回路およびピークホールド回路からなることを特徴とする、〔１〕または〔２〕に記載のレゾルバ励磁電圧振幅自動調整回路構造。 [1] Resolver signal level detection circuit for detecting the amplitude of angular displacement information (hereinafter referred to as “resolver signal”) acquired by the resolver, and excitation voltage generation for feedback of a feedback value output from the resolver signal level detection circuit A resolver excitation voltage amplitude automatic adjustment circuit structure comprising a circuit, wherein the excitation voltage generation circuit is configured to automatically adjust the excitation voltage amplitude.
[2] The resolver excitation voltage amplitude automatic adjustment according to [1], wherein in the excitation voltage generation circuit, the excitation voltage amplitude is automatically adjusted by comparing the feedback value with a target value. Circuit structure.
[3] The resolver excitation voltage amplitude automatic adjustment circuit structure according to [1] or [2], wherein the resolver signal level detection circuit includes a rectifier circuit and a peak hold circuit.

〔４〕 前記レゾルバ信号レベル検出回路により検出された信号のピーク値を周期ごとにリセットするピーク値リセット回路が設けられていることを特徴とする、〔３〕に記載のレゾルバ励磁電圧振幅自動調整回路構造。
〔５〕 〔１〕ないし〔４〕のいずれかに記載のレゾルバ励磁電圧振幅自動調整回路構造を備えていることを特徴とする、レゾルバ。
〔６〕 〔１〕ないし〔４〕のいずれかに記載のレゾルバ励磁電圧振幅自動調整回路構造を用いて、レゾルバ信号の振幅検出、励磁電圧発生回路へのフィードバック、該励磁電圧発生回路における励磁電圧振幅の自動調整がなされることにより、Ｒ／Ｄ変換回路へのレゾルバ信号電圧振幅を一定化する、レゾルバ信号電圧振幅調整方法。 [4] A resolver excitation voltage amplitude automatic adjustment according to [3], further comprising a peak value reset circuit that resets the peak value of the signal detected by the resolver signal level detection circuit for each period. Circuit structure.
[5] A resolver comprising the resolver excitation voltage amplitude automatic adjustment circuit structure according to any one of [1] to [4].
[6] Using the resolver excitation voltage amplitude automatic adjustment circuit structure according to any one of [1] to [4], amplitude detection of a resolver signal, feedback to the excitation voltage generation circuit, excitation voltage in the excitation voltage generation circuit A resolver signal voltage amplitude adjustment method for making a resolver signal voltage amplitude to an R / D conversion circuit constant by automatically adjusting the amplitude.

本発明のレゾルバ励磁電圧振幅自動調整回路構造、レゾルバ、およびレゾルバ信号電圧振幅調整方法は上述のように構成されるため、これによれば、レゾルバにおいて、Ｒ／Ｄ変換回路に対し最適な振幅となるようにレゾルバ励磁電圧振幅を自動的に調整することができる。   Since the resolver excitation voltage amplitude automatic adjustment circuit structure, resolver, and resolver signal voltage amplitude adjustment method of the present invention are configured as described above, according to this, in the resolver, the optimum amplitude for the R / D conversion circuit Thus, the resolver excitation voltage amplitude can be automatically adjusted.

つまり本発明のレゾルバ励磁電圧振幅自動調整回路構造等によれば、使用するレゾルバやケーブル長の違い、その他電気的特性に影響を与える要因に対し、センサの設置前後に関わらず基板の回路定数を個別に調整する必要がなくなる。それにより、Ｒ／Ｄ変換回路へのレゾルバ信号電圧振幅を常に一定にすることができ、その結果、レゾルバ信号の電圧振幅について、常にＳ／Ｎを最良の状態にすることができる。   In other words, according to the resolver excitation voltage amplitude automatic adjustment circuit structure of the present invention, the circuit constants of the substrate can be set regardless of before and after the installation of the sensor against the difference in the resolver used, the cable length, and other factors affecting the electrical characteristics. Eliminates the need for individual adjustments. Thereby, the resolver signal voltage amplitude to the R / D conversion circuit can be kept constant, and as a result, the S / N can always be in the best state with respect to the voltage amplitude of the resolver signal.

なお、レゾルバの出力電圧調整に関する上記各先行技術は、レゾルバ出力側の信号に対して処理を行うもの（特許文献１）、出力電圧振幅の調整が固定値によりなされるもの（特許文献２）であり、本願発明とは相違するものである。   In addition, each said prior art regarding the output voltage adjustment of a resolver is a thing which processes with respect to the signal by the side of a resolver output (patent document 1), and adjustment of an output voltage amplitude is made by a fixed value (patent document 2). There is a difference from the present invention.

本発明のレゾルバ励磁電圧振幅自動調整回路構造を示すブロック図である。It is a block diagram which shows the resolver excitation voltage amplitude automatic adjustment circuit structure of this invention. 本発明のレゾルバ励磁電圧振幅自動調整回路構造の実施例を示すブロック図である。It is a block diagram which shows the Example of the resolver excitation voltage amplitude automatic adjustment circuit structure of this invention.

以下、図面により本発明を詳細に説明する。
図１は、本発明のレゾルバ励磁電圧振幅自動調整回路構造を示すブロック図である。図示するように本レゾルバ励磁電圧振幅自動調整回路構造１０は、レゾルバ１が取得した角度変位情報（レゾルバ信号）の振幅を検出するレゾルバ信号レベル検出回路２と、レゾルバ信号レベル検出回路２から出されるフィードバック値がフィードバックされる励磁電圧発生回路３とを備えて、基本的に構成される。 Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a resolver excitation voltage amplitude automatic adjustment circuit structure according to the present invention. As shown in the figure, the resolver excitation voltage amplitude automatic adjustment circuit structure 10 is output from a resolver signal level detection circuit 2 that detects the amplitude of angular displacement information (resolver signal) acquired by the resolver 1, and the resolver signal level detection circuit 2. An excitation voltage generation circuit 3 to which a feedback value is fed back is basically configured.

かかる構成により本レゾルバ励磁電圧振幅自動調整回路構造１０では、レゾルバ１が取得したレゾルバ信号は、レゾルバ信号レベル検出回路２においてその振幅が検出され、それに基づきレゾルバ信号レベル検出回路２からフィードバック値（検出された振幅）が出され、フィードバック値は励磁電圧発生回路３にフィードバックされ、励磁電圧発生回路３ではかかるフィードバック値と目標値とが比較されることによって励磁電圧振幅が自動調整される。   With this configuration, in the resolver excitation voltage amplitude automatic adjustment circuit structure 10, the resolver signal level detection circuit 2 detects the amplitude of the resolver signal acquired by the resolver 1, and the feedback value (detection) is detected from the resolver signal level detection circuit 2 based on the detected amplitude. The feedback value is fed back to the excitation voltage generation circuit 3, and the excitation voltage amplitude is automatically adjusted by comparing the feedback value with the target value.

図２は、本発明のレゾルバ励磁電圧振幅自動調整回路構造の実施例を示すブロック図である。図示するように本レゾルバ励磁電圧振幅自動調整回路構造２１０は、レゾルバ２１が取得したレゾルバ信号の振幅を検出するレゾルバ信号レベル検出回路２２と、レゾルバ信号レベル検出回路２２から出されるフィードバック値がフィードバックされる励磁電圧発生回路２３とを備える基本構成に加え、レゾルバ信号レベル検出回路２２が整流回路２５およびピークホールド回路２６からなることを特徴とする。   FIG. 2 is a block diagram showing an embodiment of a resolver excitation voltage amplitude automatic adjustment circuit structure according to the present invention. As shown in the figure, this resolver excitation voltage amplitude automatic adjustment circuit structure 210 feeds back a resolver signal level detection circuit 22 for detecting the amplitude of a resolver signal acquired by the resolver 21 and a feedback value output from the resolver signal level detection circuit 22. The resolver signal level detection circuit 22 includes a rectification circuit 25 and a peak hold circuit 26 in addition to the basic configuration including the excitation voltage generation circuit 23.

かかる構成により本レゾルバ励磁電圧振幅自動調整回路構造２１０では、レゾルバ２１が取得したレゾルバ信号はレゾルバ信号レベル検出回路２２においてその振幅が検出されるが、まず同回路２２を構成する整流回路２５において、図中（ａ）のグラフで示す波形のレゾルバ信号が整流されて、（ｂ）で示す波形の信号となる。ついでピークホールド回路２６での処理によって、（ｃ）で示す波形の信号となる。   With this configuration, in the resolver excitation voltage amplitude automatic adjustment circuit structure 210, the resolver signal level detection circuit 22 detects the amplitude of the resolver signal acquired by the resolver 21. First, in the rectifier circuit 25 constituting the circuit 22, The resolver signal having the waveform shown in the graph (a) in the figure is rectified to become a signal having the waveform shown in (b). Next, a signal having a waveform shown in (c) is obtained by processing in the peak hold circuit 26.

このようにして処理された信号が、フィードバック値として励磁電圧発生回路２３にフィードバックされ、励磁電圧発生回路２３ではかかるフィードバック値と目標値とが比較されることによって励磁電圧振幅が自動調整される。   The signal processed in this way is fed back to the excitation voltage generation circuit 23 as a feedback value, and the excitation voltage amplitude is automatically adjusted by comparing the feedback value with the target value.

図示するように本レゾルバ励磁電圧振幅自動調整回路構造２１０では、ピーク値リセット回路２７を設けた構成とすることができる。これにより、レゾルバ信号レベル検出回路２２により検出された信号のピーク値を、周期ごとにリセットし、図中（ｄ）に示す波形の信号として励磁電圧発生回路２３にフィードバックすることができる。   As shown in the figure, the resolver excitation voltage amplitude automatic adjustment circuit structure 210 can be configured to include a peak value reset circuit 27. As a result, the peak value of the signal detected by the resolver signal level detection circuit 22 can be reset for each cycle and fed back to the excitation voltage generation circuit 23 as a signal having a waveform shown in FIG.

以上説明したレゾルバ励磁電圧振幅自動調整回路構造１０（２１０）により、レゾルバ信号の振幅検出、励磁電圧発生回路３（２３）へのフィードバック、励磁電圧発生回路３（２３）における励磁電圧振幅の自動調整がなされることにより、Ｒ／Ｄ変換回路４（２４）へのレゾルバ信号電圧振幅が一定化される。なお、以上述べたレゾルバ励磁電圧振幅自動調整回路構造１０（２１０）を備えているレゾルバ１（２１）自体も、本発明の範囲内である。   By the resolver excitation voltage amplitude automatic adjustment circuit structure 10 (210) described above, resolver signal amplitude detection, feedback to the excitation voltage generation circuit 3 (23), and automatic adjustment of the excitation voltage amplitude in the excitation voltage generation circuit 3 (23) Thus, the resolver signal voltage amplitude to the R / D conversion circuit 4 (24) is made constant. Note that the resolver 1 (21) itself provided with the resolver excitation voltage amplitude automatic adjustment circuit structure 10 (210) described above is also within the scope of the present invention.

本発明のレゾルバ励磁電圧振幅自動調整回路構造、レゾルバ、およびレゾルバ信号電圧振幅調整方法によれば、Ｒ／Ｄ変換回路に対し最適な振幅となるようにレゾルバ励磁電圧振幅を自動的に調整でき、Ｒ／Ｄ変換回路へのレゾルバ信号電圧振幅を常に一定にすることができ、常にＳ／Ｎを最良の状態にすることができる。したがって、当該分野および関連する全分野において、産業上利用性が高い発明である。   According to the resolver excitation voltage amplitude automatic adjustment circuit structure, the resolver, and the resolver signal voltage amplitude adjustment method of the present invention, the resolver excitation voltage amplitude can be automatically adjusted to be an optimum amplitude for the R / D conversion circuit, The resolver signal voltage amplitude to the R / D conversion circuit can always be constant, and the S / N can always be in the best state. Therefore, the invention is highly industrially applicable in this field and all related fields.

１、２１…レゾルバ
２、２２…レゾルバ信号レベル検出回路
２５…整流回路
２６…ピークホールド回路
２７…ピーク値リセット回路
３、２３…励磁電圧発生回路
４、２４…Ｒ／Ｄ変換回路
１０、２１０…励磁電圧振幅自動調整回路構造

DESCRIPTION OF SYMBOLS 1, 21 ... Resolver 2, 22 ... Resolver signal level detection circuit 25 ... Rectifier circuit 26 ... Peak hold circuit 27 ... Peak value reset circuit 3, 23 ... Excitation voltage generation circuit 4, 24 ... R / D conversion circuit 10, 210 ... Excitation voltage amplitude automatic adjustment circuit structure

Claims (6)

レゾルバが取得した角度変位情報（以下、「レゾルバ信号」という。）の振幅を検出するレゾルバ信号レベル検出回路と、該レゾルバ信号レベル検出回路から出されるフィードバック値がフィードバックされる励磁電圧発生回路とからなるレゾルバ励磁電圧振幅自動調整回路構造であって、該励磁電圧発生回路は励磁電圧振幅を自動調整するように構成されていることを特徴とする、レゾルバ励磁電圧振幅自動調整回路構造。 A resolver signal level detection circuit for detecting the amplitude of angular displacement information (hereinafter referred to as “resolver signal”) acquired by the resolver, and an excitation voltage generation circuit to which a feedback value output from the resolver signal level detection circuit is fed back. A resolver excitation voltage amplitude automatic adjustment circuit structure, characterized in that the excitation voltage generation circuit is configured to automatically adjust the excitation voltage amplitude. 前記励磁電圧発生回路においては、前記フィードバック値と目標値とが比較されることにより励磁電圧振幅が自動調整されることを特徴とする、請求項１に記載のレゾルバ励磁電圧振幅自動調整回路構造。 The resolver excitation voltage amplitude automatic adjustment circuit structure according to claim 1, wherein the excitation voltage generation circuit automatically adjusts the excitation voltage amplitude by comparing the feedback value with a target value. 前記レゾルバ信号レベル検出回路は、整流回路およびピークホールド回路からなることを特徴とする、請求項１または２に記載のレゾルバ励磁電圧振幅自動調整回路構造。 The resolver excitation voltage amplitude automatic adjustment circuit structure according to claim 1, wherein the resolver signal level detection circuit includes a rectifier circuit and a peak hold circuit. 前記レゾルバ信号レベル検出回路により検出された信号のピーク値を周期ごとにリセットするピーク値リセット回路が設けられていることを特徴とする、請求項３に記載のレゾルバ励磁電圧振幅自動調整回路構造。 4. The resolver excitation voltage amplitude automatic adjustment circuit structure according to claim 3, further comprising a peak value reset circuit that resets a peak value of the signal detected by the resolver signal level detection circuit for each period. 請求項１ないし４のいずれかに記載のレゾルバ励磁電圧振幅自動調整回路構造を備えていることを特徴とする、レゾルバ。 5. A resolver comprising the resolver excitation voltage amplitude automatic adjustment circuit structure according to claim 1. 請求項１ないし４のいずれかに記載のレゾルバ励磁電圧振幅自動調整回路構造を用いて、レゾルバ信号の振幅検出、励磁電圧発生回路へのフィードバック、該励磁電圧発生回路における励磁電圧振幅の自動調整がなされることにより、Ｒ／Ｄ変換回路へのレゾルバ信号電圧振幅を一定化する、レゾルバ信号電圧振幅調整方法。

Using the resolver excitation voltage amplitude automatic adjustment circuit structure according to any one of claims 1 to 4, the resolver signal amplitude detection, feedback to the excitation voltage generation circuit, and automatic adjustment of the excitation voltage amplitude in the excitation voltage generation circuit can be performed. A resolver signal voltage amplitude adjustment method for making the resolver signal voltage amplitude to the R / D conversion circuit constant by being performed.

JP2013233445A 2013-11-11 2013-11-11 Resolver excitation voltage amplitude automatic adjustment circuit structure, resolver, and resolver signal voltage amplitude adjustment method Pending JP2015094636A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004177273A (en) * 2002-11-27 2004-06-24 Toyoda Mach Works Ltd Angle detection device and torque sensor equipped with the same
JP2014122885A (en) * 2012-11-21 2014-07-03 Panasonic Corp Angle detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004177273A (en) * 2002-11-27 2004-06-24 Toyoda Mach Works Ltd Angle detection device and torque sensor equipped with the same
JP2014122885A (en) * 2012-11-21 2014-07-03 Panasonic Corp Angle detector

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