JPS63145164A - Control circuit for hydraulic device for vehicle - Google Patents

Control circuit for hydraulic device for vehicle

Info

Publication number
JPS63145164A
JPS63145164A JP29362686A JP29362686A JPS63145164A JP S63145164 A JPS63145164 A JP S63145164A JP 29362686 A JP29362686 A JP 29362686A JP 29362686 A JP29362686 A JP 29362686A JP S63145164 A JPS63145164 A JP S63145164A
Authority
JP
Japan
Prior art keywords
electric motor
hydraulic
current value
electric current
hydraulic pump
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
Application number
JP29362686A
Other languages
Japanese (ja)
Inventor
Yasuhiro Hachiman
康弘 八幡
Yukio Hirota
廣田 幸雄
Hirotaka Ishii
啓喬 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP29362686A priority Critical patent/JPS63145164A/en
Publication of JPS63145164A publication Critical patent/JPS63145164A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To improve the control operation for a hydraulic actuator by detecting the operation electric current value of an electric motor by utilizing the correlation between the discharge pressure of a hydraulic pump and the operation electric current value of the electric motor, in a control circuit for the hydraulic actuator for vehicle. CONSTITUTION:The captioned device is equipped with a hydraulic brake 1 as hydraulic actuator, hydraulic pump 2 for feeding a hydraulic pressure into the hydraulic brake 1, and an electric motor 8 for driving the hydraulic pump 2. Further, the captioned device is equipped with a MOS-FET 11 as control element for controlling the output of the electric motor 8 in corresponding with a starting signal, electric current detecting means 13 which detects the operation electric current value of the electric motor 8 and outputs an anomaly signal when the detected electric current value is outside a set value, and a lamp 23 as alarm device which generates alarm in correspondence with an anomaly judging signal. Therefore, the continuation of the control operation in the state where anomaly is generated can be avoided.

Description

【発明の詳細な説明】 (発明の分野) 本発明は、油圧ブレーキ、パワーステアリング用の油圧
シリンダ、サスペンション用の油圧シリて駆動するとと
もに、その電動モータの出力を制御して油圧式アクチュ
エータの動作を制御するように構成した車両用油圧装置
の制御回路に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention drives a hydraulic brake, a hydraulic cylinder for power steering, and a hydraulic cylinder for suspension, and controls the output of an electric motor thereof to operate a hydraulic actuator. The present invention relates to a control circuit for a vehicle hydraulic system configured to control.

(従来技術とその問題点) 従来のこの種の回路としては、油圧ポンプの吐出圧を検
出し、その吐出圧が設定値になるように電動モータの駆
動を制御するようにしていた。
(Prior art and its problems) Conventional circuits of this type detect the discharge pressure of a hydraulic pump and control the drive of an electric motor so that the discharge pressure reaches a set value.

しかしながら、このような構成を有する従来例の場合で
は、浦洩れなどに起因して油圧ポンプの吐出圧が設定値
以上にならないといった異常を発生しても、その5が常
に運転音が気付かず、電動モータが正常に駆動していな
がらも油圧式アクチュエータの動作が不良になっている
状態が継続し、安全性に欠けるとともに商品価値を低下
する欠点かあった。
However, in the case of the conventional example with such a configuration, even if an abnormality occurs such as the discharge pressure of the hydraulic pump not exceeding the set value due to a water leak, etc., the operating noise is always unnoticed. Even though the electric motor was driving normally, the hydraulic actuator continued to malfunction, resulting in a lack of safety and a reduction in product value.

また、通常状態において油圧ポンプの吐出圧を高圧にし
て使用する場合には、その吐出圧を精度良く検出するこ
とが困難で、油圧式アクチュエータの制御動作ら不良に
なりやすく、例えば、油圧賞7ケ千、ニー々がrIn’
A士で性府11.τ口11.り(kず毫になっているに
もかかわらず電動モータに通電され、不測に電動モータ
に焼き付きを発生するといった欠点があった。
In addition, when using a hydraulic pump with a high discharge pressure under normal conditions, it is difficult to accurately detect the discharge pressure, and the control operation of the hydraulic actuator is likely to malfunction. Kesen, nee ga rIn'
11. τmouth 11. There was a drawback that the electric motor was energized even though it was in the same position as the original, and the electric motor could unexpectedly seize.

(発明の目的) 本発明は、このような事情に鑑みてなされたものであっ
て、油圧ポンプの吐出圧と電動モータの動作電流値との
間に相関があることに着目し、その動作電流値を検出す
る構成を採用することにより、簡単な構成でもって、油
圧式アクチュエータの制御動作を良好に行なうことがで
きるようにするとともに、異常発生時には、その異常発
生を適確に運転者に知らせて安全性および商品価値を向
上できるようにすることを目的とする。
(Objective of the Invention) The present invention has been made in view of the above circumstances, and focuses on the fact that there is a correlation between the discharge pressure of a hydraulic pump and the operating current value of an electric motor. By adopting a configuration that detects values, it is possible to perform good control operations of hydraulic actuators with a simple configuration, and when an abnormality occurs, it is possible to accurately notify the driver of the occurrence of the abnormality. The purpose is to improve the safety and product value of products.

(発明の構成と効果) 本発明の車両用油圧装置の制御回路は、このような目的
を達成するために、 油圧式アクチュエータと、 前記油圧式アクチュエータに圧油を供給する油圧ポンプ
と、 前記油圧ポンプを駆動する電動モータと、起動信号に応
答して前記電動モータの出力を制御する制御素子と、 前記電動モータの動作電流値を検出し、検出電流値が設
定値から外れているときに異常信号を出力4°る電流値
検出手段と、 前記異常信号に応答して警報を発生ずる警報装置とを備
えて構成する。
(Structure and Effects of the Invention) In order to achieve the above object, the control circuit for the vehicle hydraulic system of the present invention includes: a hydraulic actuator; a hydraulic pump that supplies pressure oil to the hydraulic actuator; and the hydraulic system. An electric motor that drives the pump, a control element that controls the output of the electric motor in response to a start signal, and an operating current value of the electric motor that detects an abnormality when the detected current value deviates from a set value. It is constructed by comprising: a current value detection means that outputs a signal by 4°; and an alarm device that generates an alarm in response to the abnormal signal.

この構成によれば、第3図に示すように、電動モータの
動作電流値Iが高くなる程電動モータの回転数nが減少
し、逆に、電動モータの動作電流値lが高くなる程トル
クTが増加し、これらにより電動モータの動作電流値■
に対して所定の油圧ポンプの出力Pを得られていること
かわかり、このことに着目し、この特性に基づき、油洩
れを生じていて電動モータが空転している状態は電動モ
ータの動作電流値が設定値まで上昇しないことにより検
出し、また、油圧式アクチュエータが動作限界に達して
いて電動モータの焼き付きを発生する虞がある状態は電
動モータの動作電流値が設定値を越えていることにより
検出するといったように、電動モータの動作電流値が設
定値から外れていることの検出により異常を検出して警
報を発生し、制御動作の不良を運転者に知らせ、注意や
修理を促すことができる。
According to this configuration, as shown in FIG. 3, as the operating current value I of the electric motor increases, the rotation speed n of the electric motor decreases, and conversely, as the operating current value l of the electric motor increases, the torque increases. T increases, and as a result, the operating current value of the electric motor■
It can be seen that the predetermined output P of the hydraulic pump is obtained for the specified value. Focusing on this fact, based on this characteristic, when oil leaks and the electric motor is idling, the operating current of the electric motor It is detected when the value does not rise to the set value, and if the hydraulic actuator has reached its operating limit and there is a risk of electric motor seizure, it means that the operating current value of the electric motor exceeds the set value. Detects an abnormality by detecting that the operating current value of the electric motor deviates from the set value, such as by detecting that the operating current value of the electric motor deviates from the set value, generates an alarm, informs the driver of a defective control operation, and urges caution or repair. I can do it.

したがって、電動モータの動作電流値を検出するだけの
簡単な構成でありながら、d圧ポンプの吐出圧を直接的
に検出する場合に比べ、電動モータの動作電流値に基づ
いて油圧ポンプの吐出圧を精度良く検出でき、油圧式ア
クチュエータの制御動作を良好に行なうことができるよ
うになり、しかも、異常発生時には、その異常発生を適
確に運転者に知らせて注意や修理を促すことができるか
ら、制御動作が不良のまま放置することを回避でき、安
全性および商品価値を向上できるようになった。
Therefore, although it is a simple configuration that only detects the operating current value of the electric motor, compared to the case where the discharge pressure of the d-pressure pump is directly detected, the discharge pressure of the hydraulic pump is determined based on the operating current value of the electric motor. This makes it possible to detect the occurrence of an abnormality with high accuracy and to perform control operations of the hydraulic actuator in a good manner.Furthermore, in the event of an abnormality, it is possible to accurately notify the driver of the abnormality and urge caution and repair. This makes it possible to avoid leaving control operations unattended and improve safety and product value.

(実施例の説明) 以下、本発明を図面に示す実施例に基づいて詳細に説明
する。第1図は、本発明の実施例に係る車両用油圧装置
の制御回路を示す回路ブロック図、m2+¥1は、その
要部の同蕗図である一M面は5市両用油圧装置の一例と
しての油圧プレーキンステムを示し、1は、油圧式アク
チュエータとしての油圧ブレーキであり、前後左右の車
輪それぞれに付設されている。
(Description of Examples) Hereinafter, the present invention will be described in detail based on examples shown in the drawings. Fig. 1 is a circuit block diagram showing a control circuit of a vehicle hydraulic system according to an embodiment of the present invention; 1 is a hydraulic brake as a hydraulic actuator, which is attached to each of the front, rear, left and right wheels.

2は油圧ブレーキIに圧油を供給する油圧ポンプ、3は
オイルタンク、4はモジュレータユニット、5はバルブ
ユニットである。
2 is a hydraulic pump that supplies pressure oil to the hydraulic brake I, 3 is an oil tank, 4 is a modulator unit, and 5 is a valve unit.

6はブレーキペダル、7はマスターシリンダであり、そ
の足踏み操作により圧油を供給して人為的にブレーキ操
作を行なうことができるようになっている。
Reference numeral 6 designates a brake pedal, and 7 designates a master cylinder, which can be operated by foot to supply pressurized oil to perform an artificial brake operation.

前記油圧ポンプ2は電動モータ8によって駆動するよう
に構成され、そして、前記電動モータ8は、コントロー
ルユニット(CPU)9と電流検知回路IOとから構成
されろ制御回路により、所定タイミングで間欠的に起動
され、ブレーキを間欠的に利かせる、いわゆるアンデス
キッドブレーキシステムに構成されている。
The hydraulic pump 2 is configured to be driven by an electric motor 8, and the electric motor 8 is intermittently driven at predetermined timing by a control circuit consisting of a control unit (CPU) 9 and a current detection circuit IO. It is configured as a so-called undesired brake system that is activated and applies the brakes intermittently.

rNi記電流検知回路10には、起動信号に応答して開
閉され、電動モータ8の出力を制御ずろ制御素子として
のMOS−PET l 1と、タイマ回路12と、電流
値検出手段13と、第1および第2スイツヂングトラン
ジスタ14a、14bで構成されるランプ駆動回路14
とが備えられている。制御素子としては、MOS  F
ETIIの他にサイリスクや大電流開閉器などが採用可
能である。
The current detection circuit 10 includes a MOS-PET l 1 that is opened and closed in response to a start signal and serves as a control element for controlling the output of the electric motor 8, a timer circuit 12, a current value detection means 13, and a Lamp drive circuit 14 composed of first and second switching transistors 14a and 14b
are provided. As a control element, MOS F
In addition to ETII, Cyrisk and large current switches can be used.

前記電流値検出手段13には、エクスクル−シブ・オア
回路15と下限用コンパレータ16と上限用コンパレー
タ17とが備えられている。
The current value detection means 13 is equipped with an exclusive OR circuit 15, a lower limit comparator 16, and an upper limit comparator 17.

電源とMOs−FETIIとの間に、電流値検出のため
の電位差を発生する抵抗18が接続され、その抵抗18
の正側端子が、分圧抵抗19・・・によって所定の高低
の電位vc、vhに設定されて、下限用コンパレータ1
6および上限用コンパレータ17それぞれの負側入力端
子に接続され、第4図に示すように、検出電流値Iが下
限側設定値(Vf2)よりも低いとき、即ち、検出電位
Vcが前記電流の下限側設定値(1りに対応する電位V
Qよりも高いとき、また、上限側設定値(Vh)よりも
高いとき、即ち、検出電位Vcが上限側設定値(vh)
に対応する電位vhよりら低いときそれぞれにおいて、
ランプ駆動回路14に異常信号をするようになっている
A resistor 18 that generates a potential difference for current value detection is connected between the power supply and the MOs-FET II.
The positive side terminal of
6 and the upper limit comparator 17, and as shown in FIG. 4, when the detected current value I is lower than the lower limit set value (Vf2), that is, the detected potential Vc is Lower limit side set value (potential V corresponding to 1
When higher than Q and higher than the upper limit setting value (Vh), that is, the detected potential Vc is higher than the upper limit setting value (vh)
In each case, when lower than the potential vh corresponding to
An abnormality signal is sent to the lamp drive circuit 14.

前記下限用コンパレータ16の正側入力端子と抵抗18
の負側端子との間にはスイッチングトランジスタ20が
接続され、このスイッチングトランジスタ20がタイマ
回路12からのタイマ出力に応答して導通するようにな
っており、タイマ回路12の抵抗21とコンデンサ22
の時定数で設定される所定時間の経過後に検出電流値■
が下限側設定値(Vf2)よりも高くならなかったとき
に前記異常信号を出力するようになっている。
The positive input terminal of the lower limit comparator 16 and the resistor 18
A switching transistor 20 is connected between the negative terminal of the timer circuit 12 and the switching transistor 20, which becomes conductive in response to the timer output from the timer circuit 12.
The detected current value is detected after a predetermined time set by the time constant of
The abnormality signal is output when the voltage does not become higher than the lower limit set value (Vf2).

11り記ランプ駆動回路14にはランプ23か接続され
ていて、前記異常信号に応答してランプ23を点灯する
ようになっている。
A lamp 23 is connected to the lamp drive circuit 14 described in item 11, and the lamp 23 is turned on in response to the abnormality signal.

以上の構成により、検出電流値Iが、設定時間の経過後
にあっても設定範囲の下限側設定値(V (1)を越え
ない場合、ならびに、上限側設定値(v’h)を越えた
場合それぞれにおいて、ランプ23の点灯により警報を
発生し、浦洩れなどに起因する電動モータ8の空転状態
や、油圧ブレーキlのロックなどに起因する電動モータ
8の焼き付きなどを防止することができる。
With the above configuration, if the detected current value I does not exceed the lower limit set value (V (1)) of the setting range even after the set time has elapsed, and if it exceeds the upper limit set value (v'h) In each case, a warning is generated by lighting the lamp 23, and it is possible to prevent the electric motor 8 from idling due to water leakage or the like, or from seizing the electric motor 8 due to the locking of the hydraulic brake l.

本発明としては、検出電流値Iが設定時間経過後に下限
側設定値(V12)よりも低い場合にのみ、あるいは、
上限側設定値(Vh)よりも高い場合にのみ異常信号を
出力するように構成するものでも良い。
In the present invention, only when the detected current value I is lower than the lower limit set value (V12) after a set time elapses, or
It may be configured to output an abnormality signal only when the value is higher than the upper limit set value (Vh).

本発明としては、前記異常信号に応答してランプ23を
点滅するとかブザーを鳴らすなどしても良く、それらを
して警報装置と総称する。
In the present invention, the lamp 23 may be blinked or a buzzer may be sounded in response to the abnormality signal, and these are collectively referred to as an alarm device.

本発明は、上述のような油圧ブレーキlに限らず、例え
ば、車軸と車体間に介装されたショックアブゾーバに用
いられる油圧式アクチュエータとか、パワーステアリン
グに用いられる油圧式アクチュエータなど、各種の車両
用油圧装置の制御回路に適用できる。
The present invention is applicable not only to the above-mentioned hydraulic brake l, but also to various types of vehicles, such as hydraulic actuators used in shock absorbers interposed between an axle and a vehicle body, and hydraulic actuators used in power steering. Applicable to control circuits of industrial hydraulic equipment.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明の実施例に係る車両用油圧装置の制御
回路を示す回路ブロック図、第2図は、その叉部の回路
図、第3図は、電動モータの回転数、トルク、および、
油圧ポンプの出力それぞれと電動モータの動作電流値と
の相関を示す特性線図、第4図は電圧と電流との関係を
示すグラフである。 l・・・油圧式アクチュエータとしての油圧ブレーキ、
2・・・油圧ポンプ、 8・・・電動モータ、 +1・・・制御素子としての〜10s−PET。 13・電流値検出手段、 23・・・警報装置としてのランプ。
Fig. 1 is a circuit block diagram showing a control circuit of a vehicle hydraulic system according to an embodiment of the present invention, Fig. 2 is a circuit diagram of its prongs, and Fig. 3 shows the rotation speed, torque, and and,
A characteristic diagram showing the correlation between each output of the hydraulic pump and the operating current value of the electric motor, and FIG. 4 is a graph showing the relationship between voltage and current. l...Hydraulic brake as a hydraulic actuator,
2... Hydraulic pump, 8... Electric motor, +1... ~10s-PET as a control element. 13. Current value detection means; 23... Lamp as an alarm device.

Claims (1)

【特許請求の範囲】[Claims] (1)油圧式アクチュエータと、 前記油圧式アクチュエータに圧油を供給する油圧ポンプ
と、 前記油圧ポンプを駆動する電動モータと、 起動信号に応答して前記電動モータの出力を制御する制
御素子と、 前記電動モータの動作電流値を検出し、検出電流値が設
定値から外れているときに異常信号を出力する電流値検
出手段と、 前記異常信号に応答して警報を発生する警報装置とを備
えた車両用油圧装置の制御回路。
(1) a hydraulic actuator, a hydraulic pump that supplies pressure oil to the hydraulic actuator, an electric motor that drives the hydraulic pump, and a control element that controls the output of the electric motor in response to a start signal; Current value detection means that detects an operating current value of the electric motor and outputs an abnormal signal when the detected current value deviates from a set value, and an alarm device that generates an alarm in response to the abnormal signal. Control circuit for vehicle hydraulic system.
JP29362686A 1986-12-10 1986-12-10 Control circuit for hydraulic device for vehicle Pending JPS63145164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29362686A JPS63145164A (en) 1986-12-10 1986-12-10 Control circuit for hydraulic device for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29362686A JPS63145164A (en) 1986-12-10 1986-12-10 Control circuit for hydraulic device for vehicle

Publications (1)

Publication Number Publication Date
JPS63145164A true JPS63145164A (en) 1988-06-17

Family

ID=17797145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29362686A Pending JPS63145164A (en) 1986-12-10 1986-12-10 Control circuit for hydraulic device for vehicle

Country Status (1)

Country Link
JP (1) JPS63145164A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019003328A1 (en) * 2017-06-28 2019-01-03 佳則 山口 Measuring pipette tip, and measurement device and measurement method using said measuring pipette tip
US10656111B2 (en) 2015-07-10 2020-05-19 Universal Bio Research Co., Ltd. Device for electrical measurement of target chemical substance, and method therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588452A (en) * 1981-07-08 1983-01-18 Nissan Motor Co Ltd Fault detector of motor in anti-skid control system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588452A (en) * 1981-07-08 1983-01-18 Nissan Motor Co Ltd Fault detector of motor in anti-skid control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10656111B2 (en) 2015-07-10 2020-05-19 Universal Bio Research Co., Ltd. Device for electrical measurement of target chemical substance, and method therefor
WO2019003328A1 (en) * 2017-06-28 2019-01-03 佳則 山口 Measuring pipette tip, and measurement device and measurement method using said measuring pipette tip

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