JPS5910805A - Detector of rotating position of internal combustion engine - Google Patents
Detector of rotating position of internal combustion engineInfo
- Publication number
- JPS5910805A JPS5910805A JP9999283A JP9999283A JPS5910805A JP S5910805 A JPS5910805 A JP S5910805A JP 9999283 A JP9999283 A JP 9999283A JP 9999283 A JP9999283 A JP 9999283A JP S5910805 A JPS5910805 A JP S5910805A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- drop
- reference position
- angle
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 9
- 238000001514 detection method Methods 0.000 claims description 10
- 230000000737 periodic effect Effects 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 abstract description 13
- 230000004069 differentiation Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 101150105613 tll1 gene Proteins 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/087—Safety, indicating, or supervising devices determining top dead centre or ignition-timing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は自動車用内燃機関の回転位置検出装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotational position detection device for an internal combustion engine for an automobile.
従来より自動車用内燃機関に対するさまざまな要求によ
り、これを電気的に制御しようとする提案がなされてい
る。このためには、當に内燃機関の状態を検知しておく
ための各種センサが必要となる。中でも回転位置検出装
置は、内燃機関の点火時期や、運転速度等を決めるうえ
で重要なセンサである。本発明は、そのために精度良く
、確実に作動する回転位置検出装置を提供するものであ
る。BACKGROUND ART Conventionally, in response to various demands for internal combustion engines for automobiles, proposals have been made to electrically control internal combustion engines. For this purpose, various sensors are required to detect the state of the internal combustion engine. Among these, the rotational position detection device is an important sensor for determining the ignition timing, operating speed, etc. of the internal combustion engine. To this end, the present invention provides a rotational position detection device that operates accurately and reliably.
そこで、本発明は多数の角度情報とこの角度情報のうち
一部を欠落させてなる回転基準位置情報とを形成した回
転体の各情報を複数のセンサにより検出して基準位置情
報を検出したとき歯ぬけとなる周期的信号を、この歯抜
けとなる位置をずらしてそれぞれ発生させ、上記歯抜け
となる位置を検出して基準位置出力を発生すると共に、
各センサの出力信号の和をとって歯抜けのない角度位置
出力を発生ずることにより、多数の角度情報のうち一部
を欠落させた回転体のみを用いることによって、歯抜け
のない角度位置出力と基準位置出力とを良好にかつ精度
良く得られることを目的とずる。Therefore, the present invention provides a method for detecting reference position information by detecting each information of a rotating body using a plurality of sensors, which forms a large number of angle information and rotation reference position information obtained by omitting part of the angle information. A periodic signal representing a tooth gap is generated by shifting the tooth gap position, and a reference position output is generated by detecting the tooth gap position, and a reference position output is generated by detecting the tooth gap position.
By summing the output signals of each sensor to generate a perfect angular position output, by using only a rotating body with some of the angular information missing, a perfect angular position output can be generated. The purpose is to obtain the reference position output in good condition and with high accuracy.
以下本発明を図に示す実施例について説明する。The present invention will be described below with reference to embodiments shown in the drawings.
第１図乃至第３図において、第２図は回転検出部分の機
械的構成を示すもので、角度情報に対応する多数の磁極
を着磁し、そのうら基準情報に相当する部分を第３図に
示すごとく欠落させた回転体をなす円板３０が固定用円
板２２を介してビスによりシャフト２４に固定しである
。そしてこのシャフト２４は内燃機関により内燃機関の
回転と同期して駆動される。また、円板３０の外周には
それぞれ磁気抵抗素子よりなる第１、第２の角度センサ
４０．５０が対向配置しである。また、各センサ４０．
５０はほぼ同一平面上の所定角度ずれた位置にて検出ヘ
ッドＦｆ内に配置され、第４図図示の（８）、（ｂ）で
示すごとくほぼ同相で歯抜けとなる位置がずれた交流出
力を発生ずる。また、第１図は回路構成を示すもので、
抵抗６１〜６４、調整抵抗６５および比較器６６よりな
る第１の波形整形回路６０と、ＡＮＤ回路７００、イン
バータ７０１、ＮＡＮＤ回路７０２およびフリップフロ
。In Figures 1 to 3, Figure 2 shows the mechanical configuration of the rotation detection part, in which a large number of magnetic poles corresponding to angle information are magnetized, and the part corresponding to reference information is shown in Figure 3. As shown in the figure, the missing disc 30 constituting the rotating body is fixed to the shaft 24 with screws via the fixing disc 22. This shaft 24 is driven by the internal combustion engine in synchronization with the rotation of the internal combustion engine. Further, first and second angle sensors 40 and 50 each made of a magnetoresistive element are arranged on the outer periphery of the disk 30 to face each other. In addition, each sensor 40.
50 is arranged in the detection head Ff at positions shifted by a predetermined angle on almost the same plane, and as shown in (8) and (b) in FIG. will occur. Also, Figure 1 shows the circuit configuration.
A first waveform shaping circuit 60 consisting of resistors 61 to 64, an adjustment resistor 65, and a comparator 66, an AND circuit 700, an inverter 701, a NAND circuit 702, and a flip-flop.
ブ回路を構成すルＮ Ａ Ｎ Ｉ） 回路７０３．７０
４よなりる論理回路７０と、抵抗８１〜８４、ｔｌｌ１
９Ｍ抵抗８５および比較器８６よりなる第２の波形整形
回路８０と、コンデンサ１２１、抵抗１２２およびダイ
オード１２３よりなる角度用微分回路１２と、コンデン
サ１３１、抵抗１３２およびダイオード１３３よりなる
基準用微分回路１３とにより構成される。９ａは基準信
号出力端子、ｌｌａは角度信号出力端子である。図中子
は定電圧電源の正極端子に接続されるものである。そし
て、第１の波形整形回路６０の入力動作レベルは第４図
（８１図示のＬ ａになるように調整抵抗６５の抵抗値
が調整され、第１の角度センサ４０の第４図図示の（δ
）波形を第４図図示の（Ｃ）波形のごとき所定位置にて
歯抜けを有する矩形波に波形整形する。また、第２の波
形整形回路８０の入力動作レベルは第４図ｆｂ）図示の
Ｌｂレベルより若干高い正側の値になるように調整抵抗
８５の抵抗値が調整され、第２の角度センサ５０の第４
図図示のｆｂ）波形を第４図図示の（ｄ１波形のごとき
所定位置に°（歯抜けを有する矩形波に波形整形する。Circuit 703.70
4 logic circuit 70, resistors 81 to 84, tll1
a second waveform shaping circuit 80 consisting of a 9M resistor 85 and a comparator 86; an angular differentiating circuit 12 consisting of a capacitor 121, a resistor 122, and a diode 123; and a reference differentiating circuit 13 consisting of a capacitor 131, a resistor 132, and a diode 133. It is composed of 9a is a reference signal output terminal, and lla is an angle signal output terminal. The terminal in the figure is connected to the positive terminal of a constant voltage power supply. Then, the resistance value of the adjustment resistor 65 is adjusted so that the input operation level of the first waveform shaping circuit 60 becomes La shown in FIG. δ
) The waveform is shaped into a rectangular wave having gaps at predetermined positions, such as waveform (C) shown in FIG. Further, the resistance value of the adjustment resistor 85 is adjusted so that the input operation level of the second waveform shaping circuit 80 is a positive value slightly higher than the Lb level shown in FIG. 4th of
The fb waveform shown in the figure is shaped into a rectangular wave with missing teeth at a predetermined position such as the (d1 waveform shown in FIG. 4).
そして、各波形整形回路６０．８０の出力はＡＮＤ回路
７００に人力されてその出力は第４図（ｅ）に示ずこと
く歯抜けのない矩形波となる。従って、ＮＡＮＤ回路７
０２の出力波形は第４図図示の（ｆｌに示すごとくにな
り、このＮＡＮＤ回路７０２の出力信号の立下りにより
ＮＡＮＤ回路７０３．７０４よりなるフリップフロップ
回路がセットされ、第２の波形整形回路８０の出力（シ
号の立下りによりリセットされてＮＡＮＤ回路７０３に
は第４図図示のｆｇｌで示すごとき出力が発生する。そ
して、ＡＮＤ回路７００の出力信号の立上りが角度用微
分回路１２により微分されて角度信号出力端子１１ａに
第４図図示の（ｈｌで示すごとく微分信号が発生し、こ
の各微分信号の発生時点が角度位置となる。また、フリ
ップフロップ回路の出力信号の立上りが基準用微分回路
１３により微分されて基準信号出力端子９ａに第４図図
示のＯ）で示すごとく微分信号が発生し、この微分信号
の発生時点が基準位置となる。なお、この第１図図示の
回路において、後段の回路として出力信号の立上りにて
トリガされるものを用いれば、各微分回路１２．１３を
省略できることは勿論である。The outputs of each waveform shaping circuit 60, 80 are input to an AND circuit 700, and the output becomes a rectangular wave with no gaps as shown in FIG. 4(e). Therefore, NAND circuit 7
The output waveform of 02 is as shown in (fl) shown in FIG. (reset by the falling edge of the signal ``S''), the NAND circuit 703 generates an output as shown by fgl in FIG. Then, differential signals are generated at the angle signal output terminal 11a as shown in FIG. The differential signal is differentiated by the circuit 13 and generated at the reference signal output terminal 9a as shown by O) in FIG. 4, and the time point at which this differential signal is generated becomes the reference position. It goes without saying that the differentiating circuits 12 and 13 can be omitted by using a subsequent circuit that is triggered by the rising edge of the output signal.
なお、上述した実施例においては、各角度センサ４０．
５０にほぼ同相の交流出力を発生させるようにしたが、
はぼ逆相の交流出力を発生させるようにしてもよい。In addition, in the embodiment described above, each angle sensor 40.
I tried to generate AC output that is almost in phase with 50, but
Alternatively, an alternating current output with a reverse phase may be generated.
また、上述した実施例においては、第１の波形整形回路
の立上りを角度位置とし、第１の波形整形回路の立下り
を基準位置としたが、各波形整形回路の出力矩形パルス
の波形によっては、第１の波形整形回路の立下りを角度
位置とし、第２の波形整形回路の立−Ｌりを基準位置と
することは勿論である。In addition, in the above embodiment, the rising edge of the first waveform shaping circuit was taken as the angular position, and the falling edge of the first waveform shaping circuit was taken as the reference position, but depending on the waveform of the output rectangular pulse of each waveform shaping circuit, Of course, the falling edge of the first waveform shaping circuit is used as the angular position, and the falling edge of the second waveform shaping circuit is used as the reference position.
以上述べたように本発明においては、多数の角度情報と
この角度情報のうち一部を欠落させてなる回転基準位置
情報とを形成した回転体の各情報を複数のセンサにより
検出して基準位置情報を検出したとき歯抜けとなる周期
的信号を、この歯抜けとなる位置をずらしてそれぞれ発
生させ、上記歯抜けとなる位置を検出して基準位置出力
を発生ずると共に、各センサの出力信号の和をとって歯
抜けのない角度位置出力を発生するから、多数の角度情
報のうち一部を欠落させた回転体のろを用いることによ
って、歯抜けのない角度位置出力と基準位置出力とを良
好にかつ精度良く得ることができるという優れた効果が
ある。As described above, in the present invention, a plurality of sensors detect each piece of information about a rotating body, which forms a large amount of angle information and rotation reference position information obtained by omitting some of the angle information, and then position the rotation body at the reference position. When information is detected, a periodic signal that becomes a gap is generated by shifting the position where the gap occurs, and the position where the gap occurs is detected and a reference position output is generated, and the output signal of each sensor is Since a perfect angular position output is generated by taking the sum of It has the excellent effect of being able to obtain the desired results with good accuracy.
第１図は本発明装置の一実施例を示す電気回路図、第２
図は第１図図示装置における回転検出部分の機械的構成
を模式的に示す斜視図、第３図は第２図図示回転検出部
分の着磁状態図、第４図は第１図図示装置の作動説明に
供する各部波形図である。
３０・・・回転体を構成する円板、４０・・・第１の角
度センサ、５０・・・第２の角度センサ、６０，８０゜
７００・・・角度位置検出回路を構成する第１、第２の
波形整形回路、ＡＮＤ回路、７０１〜７０４・・・基準
位置検出回路を構成するインバータ、ＮＡＮＤ回路。
第１図
第２図
Ｕ
第３図
回柾丁にロロー３０
第４図FIG. 1 is an electric circuit diagram showing one embodiment of the device of the present invention, and FIG.
The figure is a perspective view schematically showing the mechanical configuration of the rotation detecting portion in the device shown in FIG. 1, FIG. 3 is a diagram of the magnetized state of the rotation detecting portion shown in FIG. 2, and FIG. It is a waveform diagram of each part used for operation explanation. 30... Disk constituting a rotating body, 40... First angle sensor, 50... Second angle sensor, 60,80°700... First constituting an angular position detection circuit, Second waveform shaping circuit, AND circuit, 701 to 704... Inverter and NAND circuit forming the reference position detection circuit. Fig. 1 Fig. 2 U Fig. 3 Rollo 30 at the time
Claims (1)
うち一部を欠落させて回転基準位置情報とした回転体と
、この回転体の角度情報および基準位置情報を検出して
前記基準位置情報を検出したとき歯抜けとなる周期的信
号を、この歯抜けとなる位置をずらしてそれぞれ発生ず
る各角度センサと、これら各センサの周期的信号のうち
の歯抜けとなる位置を検出して基準位置出力を発生する
基準位置検出回路と、前記各センサの出力信号の和をと
って歯抜けのない角度位置出力を発生する角度位置検出
回路とを備える内燃機関用回転位置検出装置。A rotating body in which a large number of angle information representing rotation angles is formed on the circumference, some of which are omitted to provide rotation reference position information, and the angle information and reference position information of this rotating body are detected to obtain the reference position information. The periodic signal that becomes missing when detecting the missing tooth is generated by each angle sensor by shifting the position where the missing tooth occurs, and the position where the missing tooth occurs among the periodic signals of each of these sensors is detected and used as a reference. A rotational position detection device for an internal combustion engine, comprising a reference position detection circuit that generates a position output, and an angular position detection circuit that generates a perfect angular position output by summing the output signals of the respective sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9999283A JPS5910805A (en) | 1983-06-03 | 1983-06-03 | Detector of rotating position of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9999283A JPS5910805A (en) | 1983-06-03 | 1983-06-03 | Detector of rotating position of internal combustion engine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9008978A Division JPS5517420A (en) | 1978-07-21 | 1978-07-24 | Detector for revolving position for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5910805A true JPS5910805A (en) | 1984-01-20 |
| JPH0252966B2 JPH0252966B2 (en) | 1990-11-15 |
Family
ID=14262130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9999283A Granted JPS5910805A (en) | 1983-06-03 | 1983-06-03 | Detector of rotating position of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910805A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4556193A (en) * | 1983-09-30 | 1985-12-03 | Fuji Koki Manufacturing Co., Ltd. | Motor-driven expansion valve |
| JPS61205006U (en) * | 1985-06-14 | 1986-12-24 | ||
| JPH0320918U (en) * | 1989-07-06 | 1991-02-28 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5166660A (en) * | 1974-12-04 | 1976-06-09 | Tokyo Shibaura Electric Co | Kogyoyorobotsutono ichijohochoseisochi |
| JPS5310869A (en) * | 1976-07-16 | 1978-01-31 | Omron Tateisi Electronics Co | Electrical switching method and switching device thereof |
-
1983
- 1983-06-03 JP JP9999283A patent/JPS5910805A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5166660A (en) * | 1974-12-04 | 1976-06-09 | Tokyo Shibaura Electric Co | Kogyoyorobotsutono ichijohochoseisochi |
| JPS5310869A (en) * | 1976-07-16 | 1978-01-31 | Omron Tateisi Electronics Co | Electrical switching method and switching device thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4556193A (en) * | 1983-09-30 | 1985-12-03 | Fuji Koki Manufacturing Co., Ltd. | Motor-driven expansion valve |
| JPS61205006U (en) * | 1985-06-14 | 1986-12-24 | ||
| JPH0320918U (en) * | 1989-07-06 | 1991-02-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0252966B2 (en) | 1990-11-15 |
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