JP6118621B2 - Electronic control device for vehicle - Google Patents
Electronic control device for vehicle Download PDFInfo
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- JP6118621B2 JP6118621B2 JP2013080070A JP2013080070A JP6118621B2 JP 6118621 B2 JP6118621 B2 JP 6118621B2 JP 2013080070 A JP2013080070 A JP 2013080070A JP 2013080070 A JP2013080070 A JP 2013080070A JP 6118621 B2 JP6118621 B2 JP 6118621B2
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Description
本発明は、車両用の電子制御装置に関する。特には、この電子制御装置に使用されている複数のソレノイド駆動回路における駆動制御に依存しない回路設計、及びソレノイドバルブ駆動回路の電源に起因したソレノイド電流の振れを抑制する、ソレノイド電流干渉防止手法に関する。
The present invention relates to an electronic control device for a vehicle. In particular, the present invention relates to a circuit design that does not depend on drive control in a plurality of solenoid drive circuits used in this electronic control device, and a solenoid current interference prevention method that suppresses fluctuation of solenoid current caused by the power supply of the solenoid valve drive circuit. .
従来の車両用自動変速機に使用されるリニアソレノイドモジュールにおける電流制御については、ＰＷＭ（パルス幅変調）制御によって誘導性負荷に流れる電流を制御する方法がある。 As for current control in a linear solenoid module used in a conventional automatic transmission for a vehicle, there is a method of controlling a current flowing through an inductive load by PWM (pulse width modulation) control.
しかしながら、特許文献１で提案された構成、また既知の手法では、モニタ電流によるフィードバック制御のみで、ソレノイドバルブに流れる電流を制御し精度を確保しており、ソレノイド駆動回路、すなわちソレノイドバルブに印加される電源電圧による補正を行っていない為、電源電圧変動時、ソレノイドバルブに流れる電流が一時的に変動してしまう。 However, in the configuration proposed in Patent Document 1 and the known method, the current flowing through the solenoid valve is controlled only by feedback control using the monitor current to ensure accuracy, and is applied to the solenoid drive circuit, that is, the solenoid valve. Therefore, when the power supply voltage fluctuates, the current flowing through the solenoid valve fluctuates temporarily.
また、ソレノイド制御に一般的に用いられている電源電圧補正の参照電圧には、バッテリ電圧、又はイグニッション電圧が用いられる為、ソレノイド駆動電圧と実際には差異があるにもかかわらず、電源電圧補正がされず、電流の振れに繋がってしまう場合がある。 In addition, the battery voltage or ignition voltage is used as the reference voltage for power supply voltage correction that is generally used for solenoid control. May not lead to current fluctuations.
この場合、複数のソレノイド駆動回路を実装するC/Uにおいて、ソレノイド駆動を切替える際、該当ソレノイドを駆動しているドライバ回路に電圧が引っ張られてしまい、同タイミングで出力しているソレノイドの電流が変動してしまう（C/Uの電源電圧は変動しないが、ドライバ回路に供給される電源電圧が変動してしまう）。 In this case, when switching the solenoid drive in a C / U equipped with a plurality of solenoid drive circuits, the voltage is pulled by the driver circuit driving the solenoid, and the solenoid current output at the same timing is Fluctuates (C / U power supply voltage does not fluctuate, but power supply voltage supplied to the driver circuit fluctuates).
そこで本発明は、上記の課題に着目してなされたものであり、ソレノイドバルブが実装された車両用電子制御装置における電流精度の向上を可能にしつつ、ソレノイド駆動電圧が変動した場合でも、同タイミングで駆動しているソレノイドバルブへの制御電流干渉防止を目的としている。
Therefore, the present invention has been made paying attention to the above-mentioned problems, and even when the solenoid drive voltage fluctuates while enabling improvement in current accuracy in the vehicle electronic control device in which the solenoid valve is mounted, the same timing is achieved. The purpose is to prevent control current interference to the solenoid valve that is driven by.
上記目的は、複数のソレノイドバルブ駆動回路と、前記ソレノイドバルブ駆動回路に接続される電源回路と、該ソレノイドバルブに流れる電流を検出する電流検出回路と、前記駆動回路を制御するマイコンを備える車両用電子制御装置において、前記ソレノイドバルブ駆動回路に供給される電圧を検出するソレノイドバルブ駆動電源電圧検出手段を、駆動回路毎に独立して実装することにより達成される。
The object is for a vehicle comprising a plurality of solenoid valve drive circuits, a power supply circuit connected to the solenoid valve drive circuit, a current detection circuit for detecting a current flowing through the solenoid valve, and a microcomputer for controlling the drive circuit. In the electronic control unit, this is achieved by independently mounting a solenoid valve driving power supply voltage detecting means for detecting a voltage supplied to the solenoid valve driving circuit for each driving circuit.
本発明によれば、例えば、各ソレノイド駆動回路に供給される駆動電圧に対し、それぞれ電源電圧検出回路を実装した場合、ソレノイド駆動を切替える際、該当ソレノイドを駆動しているドライバ回路に電圧が引っ張られてしまっても、同タイミングで出力しているソレノイドバルブの駆動回路に供給されている電圧値は独立で検出できている為、電源電圧補正により電流の変動は防止できる。 According to the present invention, for example, when a power supply voltage detection circuit is mounted for each drive voltage supplied to each solenoid drive circuit, when switching the solenoid drive, the voltage is pulled to the driver circuit driving the corresponding solenoid. Even if the voltage is supplied, the voltage value supplied to the drive circuit of the solenoid valve that is output at the same timing can be detected independently, so that fluctuations in the current can be prevented by correcting the power supply voltage.
また、コスト、又は実装面積の関係で各ソレノイド駆動回路にそれぞれ電源電圧検出回路を実装できない場合、ソレノイドバルブ駆動制御で使用しているモニタ電流を補正に用いることで、目標電流値と該ソレノイドバルブに流れるモニタ電流で補正係数を算出し、駆動制御信号に補正を加えることで、複数のソレノイド駆動回路を実装するC/Uにおいて、ソレノイド駆動を切替える際、該当ソレノイドを駆動しているドライバ回路に電圧が引っ張られてしまい、同タイミングで出力しているソレノイド駆動回路の電圧が低下してしまっても制御電流の変動を抑制することが可能となる。
Also, when the power supply voltage detection circuit cannot be mounted on each solenoid drive circuit due to cost or mounting area, the target current value and the solenoid valve can be corrected by using the monitor current used for solenoid valve drive control for correction. In the C / U where multiple solenoid drive circuits are installed, the driver circuit that drives the corresponding solenoid is switched when calculating the correction coefficient using the monitor current flowing through Even if the voltage is pulled and the voltage of the solenoid drive circuit outputting at the same time decreases, the fluctuation of the control current can be suppressed.
以下、本発明の実施例を、図面を用いて説明する。
Embodiments of the present invention will be described below with reference to the drawings.
ここで本発明では、実装面積に余裕があり、より高精度の電流精度が必要な場合図１に示すように、各ソレノイドバルブのドライバ回路の電源電圧検出回路を実装することで、上段で算出した電流指令値Ioderに補正を加えることで制御電流の変動を防止することができる。 Here, in the present invention, when there is a margin in the mounting area and higher current accuracy is required, the power supply voltage detection circuit of the driver circuit of each solenoid valve is mounted as shown in FIG. By correcting the current command value Ioder that has been corrected, fluctuations in the control current can be prevented.
また、制御フローを図２に示す。
A control flow is shown in FIG.
車両用電子制御装置１０のマイコン１１では、ソレノイドバルブ１３への電流指令値Ioderを算出し、ドライバ回路１２へ制御信号（PWM信号）を出力する機能を持ち、電流指令値Ioderの算出には、該当ソレノイドバルブに流れている実電流Imonを検出し、目標電流Itgetとの電流偏差に基づいてＰＩＤフィードバック制御を行って電流指令値Ioderを算出し、算出した指令値に基づいてPWM信号を出力する。
The microcomputer 11 of the vehicle electronic control device 10 has a function of calculating a current command value Ioder to the solenoid valve 13 and outputting a control signal (PWM signal) to the driver circuit 12, and for calculating the current command value Ioder, The actual current Imon flowing through the solenoid valve is detected, PID feedback control is performed based on the current deviation from the target current Itget, the current command value Ioder is calculated, and the PWM signal is output based on the calculated command value. .
車両用自動変速制御装置（ATCU）を例とし、請求項５のATCUの内部構成図を図４、図５に、ソレノイドバルブ制御フローを図６に示す。
Taking the vehicular automatic transmission control device (ATCU) as an example, FIG. 4 and FIG. 5 show the internal configuration diagram of the ATCU of claim 5, and FIG. 6 shows the solenoid valve control flow.
まず、ATCU内のマイコン４１は、変速要求によりソレノイドバルブ４３に対する電流指令値Isolを算出する。 First, the microcomputer 41 in the ATCU calculates a current command value Isol for the solenoid valve 43 in response to a shift request.
リニアソレノイド駆動制御６０内では、まず目標電流Itgetとモニタ電流Imonとの電流偏差に基いてPIDフィードバック制御を行う（６１）。 In the linear solenoid drive control 60, first, PID feedback control is performed based on the current deviation between the target current Itget and the monitor current Imon (61).
ATCUに実装されている温度センサより、現在のリニアソレノイドの温度を取得し、この温度を基に目標電流Itgetを補正し、指示電流Isolを算出する（６２）。 The current temperature of the linear solenoid is acquired from the temperature sensor mounted on the ATCU, the target current Itget is corrected based on this temperature, and the command current Isol is calculated (62).
次に、ソレノイドを駆動可能な信号に変換する為に、電流−Duty変換を行い、指示デューティLDutyを生成する（６３）。 Next, in order to convert the solenoid into a signal capable of driving, current-Duty conversion is performed to generate an instruction duty LDuty (63).
求めた指示デューティLDutyに対し、電源電圧補正を行う（６４）。ここで、補正係数は電源電圧に応じて算出するが、この電源電圧は、ドライバ回路に印加されている電源電圧ではなく、バッテリ電圧かイグニッション電圧の為、実際に電圧は変動していないと誤認識してしまい、バッテリ電圧かイグニッション電圧の変動が無い限り、補正係数は１．０（補正無し）と判定されてしまう。 The power supply voltage is corrected for the obtained instruction duty LDuty (64). Here, although the correction coefficient is calculated according to the power supply voltage, this power supply voltage is not the power supply voltage applied to the driver circuit, but is a battery voltage or an ignition voltage. As long as there is no change in the battery voltage or the ignition voltage, the correction coefficient is determined to be 1.0 (no correction).
ここで次に、本発明である電流干渉防止補正処理を実施する（６５）。目標電流Itgetとモニタ電流Imonで補正係数を算出し、指示デューティLDutyに補正を加えることで、複数のソレノイド駆動回路を実装するC/Uにおいて、ソレノイド駆動を切替える際、該当ソレノイドを駆動しているドライバ回路に電圧が引っ張られてしまい、同タイミングで出力しているソレノイド駆動回路の電圧が低下してしまっても制御電流の変動を抑制することが可能となる。
補正係数 ＝ 目標電流値[A] ／ モニタ電流値[A]
実施例１、及び実施例２の効果を図３に示す。
Next, the current interference prevention correction process according to the present invention is performed (65). By calculating the correction coefficient with the target current Itget and the monitor current Imon and adding correction to the indicated duty LDuty, the solenoid is driven when switching the solenoid drive in a C / U with multiple solenoid drive circuits. Even if the voltage is pulled by the driver circuit and the voltage of the solenoid driving circuit outputting at the same time decreases, the fluctuation of the control current can be suppressed.
Correction coefficient = Target current value [A] / Monitor current value [A]
The effect of Example 1 and Example 2 is shown in FIG.
以上、本発明の構成、及び当該診断について説明したが、本発明はこうした実施形態に限定されるものではなく、様々な分野で応用することが可能である。 The configuration of the present invention and the diagnosis have been described above, but the present invention is not limited to such an embodiment and can be applied in various fields.
また、上記の実施形態においては、リニアソレノイド制御回路をソフトウェア処理により制御する場合について説明したが、これに限定されるものではなく、ハードウェアにより形成することもできる。
In the above embodiment, the case where the linear solenoid control circuit is controlled by software processing has been described. However, the present invention is not limited to this, and the linear solenoid control circuit may be formed by hardware.
10 車両用電子制御装置
11 マイコン
40 車両用自動変速制御装置
10 Electronic control unit for vehicle
11 Microcomputer
40 Automatic transmission control device for vehicles
Claims (1)
前記複数のソレノイドバルブ駆動回路により駆動される複数のソレノイドバルブに流れる電流をそれぞれ検出する電流検出回路を備え、
前記ソレノイドバルブ駆動回路に供給される電圧を検出するソレノイドバルブ駆動電源電圧検出手段が駆動回路毎に独立して実装され、
前記複数のソレノイドバルブの駆動制御は、それぞれ対応する前記駆動電源電圧検出手段により検出された前記ソレノイドバルブ駆動回路の駆動電圧を基に、それぞれ対応する前記電流検出回路からの電流値を用いた電流フィードバック制御を実行し当該ソレノイドバルブの駆動制御信号を算出することを特徴とする車両用電子制御装置。 In a vehicle electronic control device comprising a plurality of solenoid valve drive circuits, a power supply circuit connected to the solenoid valve drive circuit, and a microcomputer for controlling the plurality of solenoid valve drive circuits,
A current detection circuit that detects currents flowing through the plurality of solenoid valves driven by the plurality of solenoid valve drive circuits;
Solenoid valve drive power supply voltage detecting means for detecting a voltage supplied to the solenoid valve driving circuit is implemented independently for each drive circuit,
The drive control of the plurality of solenoid valves is based on the drive voltage of the solenoid valve drive circuit detected by the corresponding drive power supply voltage detection means, and the current using the current value from the corresponding current detection circuit. An electronic control device for a vehicle, which performs feedback control and calculates a drive control signal for the solenoid valve .
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| JP2013080070A JP6118621B2 (en) | 2013-04-08 | 2013-04-08 | Electronic control device for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2013080070A JP6118621B2 (en) | 2013-04-08 | 2013-04-08 | Electronic control device for vehicle |
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| JP2014202309A JP2014202309A (en) | 2014-10-27 |
| JP6118621B2 true JP6118621B2 (en) | 2017-04-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2854538B2 (en) * | 1995-05-19 | 1999-02-03 | アイシン・エィ・ダブリュ株式会社 | Control device for linear solenoid valve |
| JP5272857B2 (en) * | 2009-04-02 | 2013-08-28 | 富士電機株式会社 | Linear solenoid module |
| JP2013002589A (en) * | 2011-06-20 | 2013-01-07 | Hitachi Automotive Systems Ltd | Solenoid module |
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