JP2000131096A - Resolver disconnection detecting method - Google Patents
Resolver disconnection detecting methodInfo
- Publication number
- JP2000131096A JP2000131096A JP10305536A JP30553698A JP2000131096A JP 2000131096 A JP2000131096 A JP 2000131096A JP 10305536 A JP10305536 A JP 10305536A JP 30553698 A JP30553698 A JP 30553698A JP 2000131096 A JP2000131096 A JP 2000131096A
- Authority
- JP
- Japan
- Prior art keywords
- disconnection
- output winding
- resolver
- signal
- differential amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、レゾルバ断線検出
方法に関し、特に、出力巻線に直流バイアス電流を印加
することにより、断線時に回転角度信号よりも高い電圧
値を検出することによって断線の検出を行うための新規
な改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting disconnection of a resolver, and more particularly, to detecting a disconnection by applying a DC bias current to an output winding to detect a voltage value higher than a rotation angle signal at the time of disconnection. A new improvement to do.
【０００２】[0002]
【従来の技術】従来、用いられていたこの種のレゾルバ
断線検出方法としては、レゾルバ信号である回転角度信
号の電圧を予め決められた基準値と比較し、ｓｉｎ側及
びｃｏｓ側の両者とも、この基準値より低い場合を断線
と判断することが採用されている。2. Description of the Related Art Conventionally, this type of resolver disconnection detection method has been proposed in which a voltage of a rotation angle signal, which is a resolver signal, is compared with a predetermined reference value, and both a sin side and a cos side are used. It is adopted that a case where the value is lower than the reference value is determined as a disconnection.
【０００３】[0003]
【発明が解決しようとする課題】従来のレゾルバ断線検
出方法は、以上のように構成されていたため、次のよう
な課題が存在していた。すなわち、前述の従来方法にお
いては、励磁系の励磁ラインの断線の場合においては全
角度範囲において断線が検出できるが、例えばｓｉｎ信
号について、回転角度が０°の時は回転角度信号が０Ｖ
となり、断線の有無については判断できない状態となっ
ていた。Since the conventional resolver disconnection detecting method is configured as described above, there are the following problems. That is, in the above-described conventional method, in the case of a disconnection of the excitation line of the excitation system, the disconnection can be detected in the entire angle range.
, And it was not possible to determine the presence or absence of disconnection.
【０００４】本発明は、以上のような課題を解決するた
めになされたもので、特に、出力巻線に直流バイアス電
流を印加することにより、断線時に回転角度信号よりも
高い電圧値を検出することによって断線の検出を行うよ
うにしたレゾルバ断線検出方法を提供することを目的と
する。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In particular, a voltage value higher than a rotation angle signal is detected at the time of disconnection by applying a DC bias current to an output winding. Accordingly, it is an object of the present invention to provide a resolver disconnection detection method for detecting disconnection.
【０００５】[0005]
【課題を解決するための手段】本発明によるレゾルバ断
線検出方法は、回転子の回転に応じて出力巻線から回転
角度に応じた回転角度信号を出力するレゾルバからの信
号を差動アンプにより受けるようにしたレゾルバ信号入
力回路において、前記出力巻線に対して直流バイアス電
流を印加し、前記出力巻線の断線時には前記差動アンプ
から前記回転角度信号の最大電圧値よりも高い電圧値の
断線検出信号が出力される方法であり、また、前記直流
バイアス電流を出力巻線に常時印加する方法である。According to the resolver disconnection detecting method of the present invention, a differential amplifier receives a signal from a resolver that outputs a rotation angle signal corresponding to a rotation angle from an output winding according to rotation of a rotor. In the resolver signal input circuit described above, a DC bias current is applied to the output winding, and when the output winding is disconnected, a disconnection of a voltage value higher than the maximum voltage value of the rotation angle signal from the differential amplifier is performed. This is a method of outputting a detection signal, and a method of constantly applying the DC bias current to an output winding.
【０００６】[0006]
【発明の実施の形態】以下、図面と共に本発明によるレ
ゾルバ断線検出方法の好適な実施の形態について説明す
る。図１において符号１で示されるものは励磁巻線２と
出力巻線３とからなるレゾルバであり、この出力巻線３
は二相出力であるため１対構成であるが、ここでは省略
し、ｓｉｎ又はｃｏｓ用の出力巻線３のみとして説明す
る。なお、信号の入出力用の回転トランスは省略してい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the resolver disconnection detecting method according to the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a resolver including an exciting winding 2 and an output winding 3.
Is a two-phase output and therefore has a pair configuration, but is omitted here, and only the output winding 3 for sin or cos will be described. It should be noted that a rotary transformer for inputting and outputting signals is omitted.
【０００７】前記出力巻線３の両端に接続された入力ラ
イン４、５には、バッファ回路６、７が設けられ、この
各バッファ回路６、７は１対の第１、第２抵抗Ｒ１、Ｒ
３を介してオプアンプ（演算増幅器）８に接続され、こ
のオプアンプ８の正相端子８ａには第３抵抗Ｒ２を介し
てコモン端子ＣＯＭが接続され、逆相端子８ｂの出力端
子８ｃとの間には第４抵抗Ｒ４が接続されている。前述
のオプアンプ８及び各抵抗Ｒ１〜Ｒ４によって周知の差
動アンプ１０が構成され、この出力端子８ｃからは回転
角度信号ｓｉｎθ・ｆ(ｔ)又はｃｏｓθ・ｆ(ｔ)が出力
されるように構成されている。The input lines 4 and 5 connected to both ends of the output winding 3 are provided with buffer circuits 6 and 7, respectively. Each of the buffer circuits 6 and 7 has a pair of first and second resistors R1 and R2. R
The common terminal COM is connected via a third resistor R2 to a positive-phase terminal 8a of the op-amp 8, and is connected to an output terminal 8c of a negative-phase terminal 8b. Is connected to a fourth resistor R4. A well-known differential amplifier 10 is constituted by the above-described op-amp 8 and the respective resistors R1 to R4, and is configured such that a rotation angle signal sin θ · f (t) or cos θ · f (t) is output from the output terminal 8c. Have been.
【０００８】前記入力ライン４、５には、同一抵抗値の
第５、第６抵抗ＲBU、ＲBLが接続され、直流電源１１か
らの直流バイアス電流ＩＢが第５抵抗ＲBUから出力巻線
３を経て第６抵抗ＲBLに流れるように印加されている。
なお、この直流バイアス電流ＩＢは、前記回転角度信号
ｓｉｎθ・ｆ(ｔ)又はｃｏｓθ・ｆ(ｔ)の電圧レベルに
は悪影響を与えない程度に設定されている。The input lines 4 and 5 are connected to fifth and sixth resistors R BU and R BL having the same resistance value, and a DC bias current IB from the DC power supply 11 is output from the fifth resistor R BU to the output winding. The voltage is applied so as to flow through the third resistor RBL via the third resistor RBL .
The DC bias current IB is set so as not to adversely affect the voltage level of the rotation angle signal sin θ · f (t) or cos θ · f (t).
【０００９】次に動作について説明する。まず、出力巻
線３が断線せずに正常な場合には、出力巻線３に誘起さ
れた回転角度信号ｓｉｎθ・ｆ(ｔ)又はｃｏｓθ・ｆ
(ｔ)は、差動アンプ１０を経て出力端子８ｃから出力さ
れるが、この出力巻線３に断線が発生した場合には、直
流バイアス電流ＩＢが出力巻線３及び第６抵抗ＲBLに流
れなくなると同時に直流電源１１が第１バッファ回路６
及び第２バッファ回路７を介して差動アンプ１０に印加
されて回転角度信号ｓｉｎθ・ｆ(ｔ)又はｃｏｓθ・ｆ
(ｔ)の代わりに断線検出信号２０が出力され、この断線
検出信号２０は回転角度信号ｓｉｎθ・ｆ(ｔ)又はｃｏ
ｓθ・ｆ(ｔ)の電圧値よりも大（例えば、５Ｖ）であ
り、この断線検出信号２０の電圧レベルを例えば周知の
ウィンドコンパレータ等によって監視することにより断
線の有無を検出することができる。なお、出力巻線３
は、２相の場合、Ｓ１−Ｓ３とＳ２−Ｓ４に接続するこ
とができる。又は、Ｓ１−Ｓ３とＳ２−Ｓ４に同じ検出
回路を設けることもできる。Next, the operation will be described. First, when the output winding 3 is normal without disconnection, the rotation angle signal sinθ · f (t) or cosθ · f
(t) is output from the output terminal 8c via the differential amplifier 10. When a disconnection occurs in the output winding 3, the DC bias current IB is applied to the output winding 3 and the sixth resistor RBL . As soon as the DC power supply 11 stops flowing, the first buffer circuit 6
And the rotation angle signal sin θ · f (t) or cos θ · f applied to the differential amplifier 10 via the second buffer circuit 7.
A disconnection detection signal 20 is output in place of (t), and the disconnection detection signal 20 is a rotation angle signal sin θ · f (t) or co.
It is larger than the voltage value of sθ · f (t) (for example, 5 V), and the presence or absence of a disconnection can be detected by monitoring the voltage level of the disconnection detection signal 20 using, for example, a well-known window comparator. The output winding 3
Can be connected to S1-S3 and S2-S4 in case of two phases. Alternatively, the same detection circuit can be provided in S1-S3 and S2-S4.
【００１０】[0010]
【発明の効果】本発明によるレゾルバ断線検出方法は、
以上のように構成されているため、次のような効果を得
ることができる。すなわち、出力巻線に対して直流バイ
アス電流を印加し、断線時に回転角度信号よりも高い電
圧値の断線検出信号が得られるため、回転角度に関係な
く断線検出を行うことができる。The resolver disconnection detecting method according to the present invention comprises:
With the above configuration, the following effects can be obtained. That is, a DC bias current is applied to the output winding, and a disconnection detection signal having a voltage value higher than the rotation angle signal is obtained at the time of disconnection, so that disconnection detection can be performed regardless of the rotation angle.
【図１】本発明によるレゾルバ断線検出方法を示すブロ
ック図である。FIG. 1 is a block diagram showing a resolver disconnection detection method according to the present invention.
３ 出力巻線 １０ 差動アンプ（ｓｉｎθ・ｆ(ｔ)又はｃｏｓθ・
ｆ(ｔ)） 回転角度信号 ２０ 断線検出信号3 Output winding 10 Differential amplifier (sin θ · f (t) or cos θ ·
f (t)) Rotation angle signal 20 Disconnection detection signal
Claims (2)
回転角度に応じた回転角度信号(sinθ・f(t)又はcosθ・f
(t))を出力するレゾルバからの信号を差動アンプ(10)に
より受けるようにしたレゾルバ信号入力回路において、
前記出力巻線(3)に対して直流バイアス電流を印加し、
前記出力巻線(3)の断線時には前記差動アンプ(10)から
前記回転角度信号(sinθ・f(t)又はcosθ・f(t))の最大電
圧値よりも高い電圧値の断線検出信号(20)が出力される
ことを特徴とするレゾルバ断線検出方法。1. A rotation angle signal (sinθ · f (t) or cosθ · f) corresponding to a rotation angle from an output winding (3) according to rotation of a rotor.
(t)) in the resolver signal input circuit which receives the signal from the resolver by the differential amplifier (10).
Applying a DC bias current to the output winding (3),
At the time of the disconnection of the output winding (3), a disconnection detection signal having a voltage value higher than the maximum voltage value of the rotation angle signal (sinθf (t) or cosθf (t)) from the differential amplifier (10). (20) is output, the resolver disconnection detecting method.
常時印加することを特徴とするレゾルバ断線検出方法。2. A resolver disconnection detecting method, wherein the DC bias current is constantly applied to an output winding (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10305536A JP2000131096A (en) | 1998-10-27 | 1998-10-27 | Resolver disconnection detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10305536A JP2000131096A (en) | 1998-10-27 | 1998-10-27 | Resolver disconnection detecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000131096A true JP2000131096A (en) | 2000-05-12 |
Family
ID=17946346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10305536A Pending JP2000131096A (en) | 1998-10-27 | 1998-10-27 | Resolver disconnection detecting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000131096A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6615152B2 (en) | 2001-03-27 | 2003-09-02 | Mitsubishi Denki Kabushiki Kaisha | Abnormality detecting method and device for position detecting device, and electric power steering device |
| JP2004294442A (en) * | 2003-03-26 | 2004-10-21 | Hamilton Sundstrand Corp | Engine speed sensor with fault detection |
| US6958620B1 (en) | 2004-07-07 | 2005-10-25 | Mitsubishi Denki Kabushiki Kaisha | Resolver malfunction diagnostic circuit |
| JP2007121321A (en) * | 2007-02-13 | 2007-05-17 | Mitsubishi Electric Corp | Resolver fault diagnostic circuit |
| JP2007241602A (en) * | 2006-03-08 | 2007-09-20 | Oriental Motor Co Ltd | Rotation position detector |
| EP2078933A2 (en) | 2008-01-09 | 2009-07-15 | Hitachi, Ltd. | Resolver abnormality detection circuit |
| CN102338839A (en) * | 2010-07-16 | 2012-02-01 | 通用电气公司 | Systems, methods, and apparatus for connection fault self-monitoring with DC bias current |
| JP2012108092A (en) * | 2010-05-28 | 2012-06-07 | Denso Corp | Abnormality diagnostic apparatus of amplitude modulation device |
| CN102998574A (en) * | 2011-09-14 | 2013-03-27 | 现代摩比斯株式会社 | Resolver failure detecting system for driving engine of vehicle |
-
1998
- 1998-10-27 JP JP10305536A patent/JP2000131096A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6615152B2 (en) | 2001-03-27 | 2003-09-02 | Mitsubishi Denki Kabushiki Kaisha | Abnormality detecting method and device for position detecting device, and electric power steering device |
| DE10156849B4 (en) * | 2001-03-27 | 2005-06-23 | Mitsubishi Denki K.K. | Method and device for detecting the angular position of a rotor |
| JP2004294442A (en) * | 2003-03-26 | 2004-10-21 | Hamilton Sundstrand Corp | Engine speed sensor with fault detection |
| US6958620B1 (en) | 2004-07-07 | 2005-10-25 | Mitsubishi Denki Kabushiki Kaisha | Resolver malfunction diagnostic circuit |
| FR2872915A1 (en) * | 2004-07-07 | 2006-01-13 | Mitsubishi Electric Corp | DIAGNOSTIC CIRCUIT FOR IMPROPER RESOLVER OPERATION |
| DE102005001702B4 (en) * | 2004-07-07 | 2015-06-18 | Mitsubishi Denki K.K. | Drehmelderfehlfuktionsdiagnoseschaltung |
| JP2007241602A (en) * | 2006-03-08 | 2007-09-20 | Oriental Motor Co Ltd | Rotation position detector |
| JP4691459B2 (en) * | 2006-03-08 | 2011-06-01 | オリエンタルモーター株式会社 | Rotation position detector |
| JP4499120B2 (en) * | 2007-02-13 | 2010-07-07 | 三菱電機株式会社 | Resolver fault diagnosis circuit |
| JP2007121321A (en) * | 2007-02-13 | 2007-05-17 | Mitsubishi Electric Corp | Resolver fault diagnostic circuit |
| EP2078933A2 (en) | 2008-01-09 | 2009-07-15 | Hitachi, Ltd. | Resolver abnormality detection circuit |
| JP2012108092A (en) * | 2010-05-28 | 2012-06-07 | Denso Corp | Abnormality diagnostic apparatus of amplitude modulation device |
| CN102338839A (en) * | 2010-07-16 | 2012-02-01 | 通用电气公司 | Systems, methods, and apparatus for connection fault self-monitoring with DC bias current |
| JP2012021985A (en) * | 2010-07-16 | 2012-02-02 | General Electric Co <Ge> | System, method, and device for self monitoring of poor connection using dc bias current |
| EP2418502A3 (en) * | 2010-07-16 | 2014-06-25 | General Electric Company | Systems, methods, and apparatus for connection fault self-monitoring with DC bias current |
| CN104950213A (en) * | 2010-07-16 | 2015-09-30 | 通用电气公司 | System, method, and device used for self-monitoring using connection faults of DC bias current |
| CN102998574A (en) * | 2011-09-14 | 2013-03-27 | 现代摩比斯株式会社 | Resolver failure detecting system for driving engine of vehicle |
| CN102998574B (en) * | 2011-09-14 | 2016-12-21 | 现代摩比斯株式会社 | The fault detection system of the rotary transformer of automobile-used driving electromotor |
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