JPH03239823A - Electromagnetic clutch current controller for automobile - Google Patents
Electromagnetic clutch current controller for automobileInfo
- Publication number
- JPH03239823A JPH03239823A JP2032802A JP3280290A JPH03239823A JP H03239823 A JPH03239823 A JP H03239823A JP 2032802 A JP2032802 A JP 2032802A JP 3280290 A JP3280290 A JP 3280290A JP H03239823 A JPH03239823 A JP H03239823A
- Authority
- JP
- Japan
- Prior art keywords
- current
- electromagnetic clutch
- output transistor
- transistor
- automobile
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000005669 field effect Effects 0.000 claims description 5
- 230000005685 electric field effect Effects 0.000 abstract 2
- 230000005284 excitation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電流制御により’１４ｆ６１クラッチの伝達
トルク制御を行なう自動車用電磁クラッチ電流制御装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic clutch current control device for an automobile that controls the transmission torque of a '14F61 clutch by current control.
第２図は、従来の自動車用１を磁クラッチ電流制御装置
を示す回路図である。同図において、１はｔＴ！！１ク
ラッチ電流制御装置、２は電磁クラッチ電流演算手段、
３は電源、４は電磁クラッチ、５は電流偏差増幅器、６
は電流検出増幅器、７はｐｗＭ変調器、８．１３は第１
．第２の出力トランジスタ、９は還流ダイオード、１０
．１２は逆励磁抵抗、１１は早切ダイオード、１４は電
流検出抵抗、１５はベース抵抗、１６はトランジスタ、
２１はインタフェース回路、２２はマイクロコンピュー
タ、６１は演算増幅器、６２．６３は抵抗、ＤＡはＤ／
Ａ変換器、Ｔ１．、Ｔ２は出力端子である。FIG. 2 is a circuit diagram showing a conventional magnetic clutch current control device for automobiles. In the same figure, 1 is tT! ! 1 clutch current control device, 2 electromagnetic clutch current calculation means,
3 is a power supply, 4 is an electromagnetic clutch, 5 is a current deviation amplifier, 6
is the current sense amplifier, 7 is the pwM modulator, and 8.13 is the first
．． Second output transistor, 9 is a freewheeling diode, 10
．． 12 is a reverse excitation resistor, 11 is a fast-cutting diode, 14 is a current detection resistor, 15 is a base resistor, 16 is a transistor,
21 is an interface circuit, 22 is a microcomputer, 61 is an operational amplifier, 62.63 is a resistor, DA is a D/
A converter, T1. , T2 are output terminals.
第２図において、１を磁りランチ電流演算手段２は、走
行制御情報ＳＤおよびエンジン制御情報ＳＥとから電磁
クラッチ電流デジタル指令信号ＳＩＤを得る。Ｄ／Ａ変
換器ＤＡは、電磁クラッチ電流デジタル指令信号５ＩＣ
Ｉから、電磁クラッチ電流アナログ指令信号ＳＩＡを得
る。電流偏差増幅器５は、電流検出増幅器６からのｔ磁
りラッチ電流帰還信号Ｓｒとアナログ指令信号ＳＩＡと
の偏差信号を得る。この偏差信号を人力としてＰＷＭ変
調器７は出力トランジスタ８のオン・オフ制御を行なう
。In FIG. 2, a magnetic launch current calculation means 2 obtains an electromagnetic clutch current digital command signal SID from travel control information SD and engine control information SE. The D/A converter DA has an electromagnetic clutch current digital command signal 5IC.
An electromagnetic clutch current analog command signal SIA is obtained from I. The current deviation amplifier 5 obtains a deviation signal between the t-magnetic latch current feedback signal Sr from the current detection amplifier 6 and the analog command signal SIA. Using this deviation signal as human power, the PWM modulator 7 performs on/off control of the output transistor 8.
出力トランジスタ１３は通常のＮｆｅｔクラッチ接続時
はオンのままであり、電磁クラッチ開放信号ＳＯにより
制御される。逆励磁抵抗１０．１２は、出力トランジス
タ８．１３が共にオフの場合に電磁クラッチ電流ｉｃの
方向とは逆方向に流れる逆ｗＪ磁電流を給電する。逆励
磁電流は電磁クラ７チ残留トルクの補正のため必要であ
る。The output transistor 13 remains on when the Nfet clutch is normally connected, and is controlled by the electromagnetic clutch release signal SO. The reverse excitation resistor 10.12 supplies a reverse wJ magnetic current that flows in the opposite direction to the direction of the electromagnetic clutch current ic when both output transistors 8.13 are off. The reverse excitation current is necessary to correct the residual torque of the electromagnetic clutch.
電磁クラッチを流の検出は出力トランジスタ１３のエミ
ッタ側に接続された電流検出抵抗１４により行なう。従
って、出力トランジスタ１３がオンの時、電流検出抵抗
１４には出力トランジスタ１３のベース電流Ｉ、が流れ
、また逆励磁抵抗１２の電流が流れることになる。すな
わち、逆励磁抵抗１２の電流をＩｃ、ｉｔ流検出抵抗１
４の電流を■、とすると、
Ｉｔ”” Ｉｃ＋ Ｉｓ＋ｉｃ
となる。従って、実電磁クラッチ電流ｉｃに対して検出
電流値がＩＣ＋ＩＨの誤差を発生することになる。ただ
し、■、は電流検出増幅器６で補正されるので、結局ベ
ース電流１３分の誤差が生しることになり、しかもこの
ベース電流値が電源電圧によって変動していた。Detection of current through the electromagnetic clutch is performed by a current detection resistor 14 connected to the emitter side of the output transistor 13. Therefore, when the output transistor 13 is on, the base current I of the output transistor 13 flows through the current detection resistor 14, and the current of the reverse excitation resistor 12 also flows. That is, the current of the reverse excitation resistor 12 is Ic, it current detection resistor 1
If the current of No. 4 is represented by ■, then It"" Ic+Is+ic. Therefore, the detected current value generates an error of IC+IH with respect to the actual electromagnetic clutch current IC. However, since (2) is corrected by the current detection amplifier 6, an error corresponding to the base current of 13 is generated, and furthermore, this base current value fluctuates depending on the power supply voltage.
例えば、Ｉｃ”０．１Ａ、Ｉａ＝０．２Ａ、１ｃ＝４．
ＯＡとすると、ＩＥ＝４．３Ａとなる。したがって、ベ
ース電流■８で５％の誤差を与え、正確な電磁クラッチ
電流制御が行なえず、特に微小電流域における微小トル
ク制御がうまく行なえなかった。For example, Ic"0.1A, Ia=0.2A, 1c=4.
If it is OA, IE=4.3A. Therefore, the base current (1) gave a 5% error, making it impossible to accurately control the electromagnetic clutch current, and particularly failing to perform minute torque control in a minute current range.
本発明はこのような点に鑑みてなされたものであり、そ
の目的とするところは、ベース電流の影響の無い自動車
用電磁クラッチ電流制御装置を得ることにある。The present invention has been made in view of these points, and an object of the present invention is to obtain an electromagnetic clutch current control device for an automobile that is not affected by the base current.
このような課題を解決するために本発明は、電磁クラッ
チ電流指令値と電磁クラッチ電流検出値との偏差に応じ
てオン・オフ制御される第１の出力トランジスタと、電
磁クラッチ開放信号によりオン・オフ制御され、ｔａク
ラ７チ電流を電流検出抵抗に流す第２の出力トランジス
タと、電気的に第１と第２の出力トランジスタの間に配
置された電磁クラッチとを有する自動車用電磁クラッチ
電流制御装置において、第２の出力トランジスタを電界
効果型トランジスタとするようにしたものである。In order to solve such problems, the present invention provides a first output transistor that is controlled on and off according to the deviation between an electromagnetic clutch current command value and an electromagnetic clutch current detection value, and a first output transistor that is turned on and off by an electromagnetic clutch release signal. An electromagnetic clutch current control for an automobile having a second output transistor that is off-controlled and causes a clutch current to flow through a current detection resistor, and an electromagnetic clutch that is electrically disposed between the first and second output transistors. In the device, the second output transistor is a field effect transistor.
本発明による自動車用電磁クラッチ電流制御装置におい
ては、電磁クラッチ電流を検出するための電流検出抵抗
には第２の出力トランジスタのベース電流は流れない。In the automotive electromagnetic clutch current control device according to the present invention, the base current of the second output transistor does not flow through the current detection resistor for detecting the electromagnetic clutch current.
第１図は、本発明による自動車用電磁クラッチ電流制御
装置の一実施例を示す回路図である。同図において、１
７は第２の出力トランジスタとなる電界効果型トランジ
スタである。FIG. 1 is a circuit diagram showing an embodiment of an electromagnetic clutch current control device for an automobile according to the present invention. In the same figure, 1
Reference numeral 7 denotes a field effect transistor serving as a second output transistor.
このように、本装置においては、第２の出力トランジス
タとして電界効果型トランジスタ１７を設けたので、そ
のゲートからソースへ流れる電流は極めて微小となり、
電磁クラッチ電流検出に対するヘース電流の影響は除去
される。In this way, in this device, since the field effect transistor 17 is provided as the second output transistor, the current flowing from the gate to the source becomes extremely small.
The influence of Heas current on electromagnetic clutch current detection is removed.
例えば、従来の技術の項で示した数値を参考にすれば、
Ｉｃ＝０．１Ａ、Ｉｙｔ＝ＯＡＸｉ−＝４．ＯＡ、ｌ１
＝４．１Ａとなる。したがって、ベース電流Ｉ。For example, referring to the numbers shown in the conventional technology section,
Ic=0.1A, Iyt=OAXi-=4. OA, l1
=4.1A. Therefore, the base current I.
の誤差に対する影響を無くなり、電流【、による影響骨
のみの２．５％となる。この誤差は、電流検出増幅器６
における抵抗６２．６３により除去される。これにより
、微小電流域でも正確に制御することができる。The influence on the error of the current is eliminated, and the influence of the current [, is only 2.5% of the bone. This error is caused by the current sense amplifier 6
is removed by resistors 62, 63 at. This allows accurate control even in a minute current range.
なお、上記実施例では、電流１ｃの補正を電流検出増幅
器６で行なうようにしたが、検出値を一旦電磁りランチ
電流演算手段２に取り込んで、電磁フランチ電流演算手
段２で補正後に電流偏差増幅器５に出力しても良い。In the above embodiment, the current 1c is corrected by the current detection amplifier 6, but the detected value is once taken into the electromagnetic launch current calculation means 2, and after correction by the electromagnetic launch current calculation means 2, the current deviation amplifier It may be output to 5.
以上説明したように本発明は、第２の出力トランジスタ
を電界効果型トランジスタとしたことにより、電磁クラ
ッチ電流検出におけるベース電流の影響を除去でき、微
小電流域でも正確な電流制御ができ、電源電圧変動の影
響が無くフィーリングの良い走行ができる効果がある。As explained above, in the present invention, by using a field effect transistor as the second output transistor, the influence of the base current on electromagnetic clutch current detection can be removed, accurate current control can be performed even in a minute current range, and the power supply voltage This has the effect of allowing you to drive with a good feeling without being affected by fluctuations.
第１図は本発明による自動車用電磁クラッチ電流側？ｉ
ｌ装置の一実施例を示す回路図、第２図は従来の自動車
用電磁クラッチ電流制御装置を示す回路図である。
１・・・電磁クラッチ電流制御装置、２・・・電磁クラ
ッチ電流演算手段、３・・・電源、４・・・電磁クラ、
チ、５・・・電流偏差増幅器、６・・・電流検出増幅器
、７・・・ＰＷＭ変調器、８・・・第１の出力トランジ
スタ、９・・・還流ダイオード、１０．１２・・・逆励
磁抵抗、１１・・・早切ダイオード、１４・・・電流検
出抵抗、１５・・・ヘース抵抗、１６・−・トランジス
タ、１７・・・第２の出力トランジスタ、２１・・・イ
ンタフェース回路、２２・・・マイクロコンピュータ、
６１−・演算増幅器、６２．６３・・・抵抗、ＤＡ・・
・Ｄ／Ａ変換器。Figure 1 shows the current side of the automotive electromagnetic clutch according to the present invention? i
FIG. 2 is a circuit diagram showing a conventional electromagnetic clutch current control device for an automobile. DESCRIPTION OF SYMBOLS 1... Electromagnetic clutch current control device, 2... Electromagnetic clutch current calculation means, 3... Power supply, 4... Electromagnetic clutch,
H, 5... Current deviation amplifier, 6... Current detection amplifier, 7... PWM modulator, 8... First output transistor, 9... Freewheeling diode, 10.12... Reverse Excitation resistor, 11... Early cut diode, 14... Current detection resistor, 15... Heath resistor, 16... Transistor, 17... Second output transistor, 21... Interface circuit, 22 ...microcomputer,
61--Operation amplifier, 62.63... Resistor, DA...
・D/A converter.
Claims (1)
の偏差に応じてオン・オフ制御される第１の出力トラン
ジスタと、電磁クラッチ開放信号によりオン・オフ制御
され、電磁クラッチ電流を電流検出抵抗に流す第２の出
力トランジスタと、電気的に前記第１と第２の出力トラ
ンジスタの間に配置された電磁クラッチとを有する自動
車用電磁クラッチ電流制御装置において、前記第２の出
力トランジスタを電界効果型トランジスタとしたことを
特徴とする自動車用電磁クラッチ電流制御装置。A first output transistor that is controlled on and off according to the deviation between the electromagnetic clutch current command value and the electromagnetic clutch current detection value, and an on and off controlled transistor that is controlled on and off according to the electromagnetic clutch release signal and causes the electromagnetic clutch current to flow through the current detection resistor. In an electromagnetic clutch current control device for an automobile having a second output transistor and an electromagnetic clutch electrically arranged between the first and second output transistors, the second output transistor is a field effect transistor. An electromagnetic clutch current control device for an automobile, characterized by the following.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2032802A JPH03239823A (en) | 1990-02-13 | 1990-02-13 | Electromagnetic clutch current controller for automobile |
| US07/651,082 US5094333A (en) | 1990-02-07 | 1991-02-06 | Current control device for an automotive electromagnetic clutch |
| GB9102670A GB2242249B (en) | 1990-02-07 | 1991-02-07 | Current control device for an automotive electromagnetic clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2032802A JPH03239823A (en) | 1990-02-13 | 1990-02-13 | Electromagnetic clutch current controller for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03239823A true JPH03239823A (en) | 1991-10-25 |
Family
ID=12368976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2032802A Pending JPH03239823A (en) | 1990-02-07 | 1990-02-13 | Electromagnetic clutch current controller for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03239823A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008067045A (en) * | 2006-09-07 | 2008-03-21 | Onkyo Corp | Low-pass filter and voltage-current conversion circuit for use in the same |
-
1990
- 1990-02-13 JP JP2032802A patent/JPH03239823A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008067045A (en) * | 2006-09-07 | 2008-03-21 | Onkyo Corp | Low-pass filter and voltage-current conversion circuit for use in the same |
| US7466192B2 (en) | 2006-09-07 | 2008-12-16 | Onkyo Corporation | Low-pass filter and voltage-current conversion circuit used in the same |
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