JPS59120572A - Abnormality detecting device in power steering - Google Patents
Abnormality detecting device in power steeringInfo
- Publication number
- JPS59120572A JPS59120572A JP23410682A JP23410682A JPS59120572A JP S59120572 A JPS59120572 A JP S59120572A JP 23410682 A JP23410682 A JP 23410682A JP 23410682 A JP23410682 A JP 23410682A JP S59120572 A JPS59120572 A JP S59120572A
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- voltage
- output
- control valve
- power steering
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は車速に応じて作動油の供給流量を切換えるよ
うにしたパワーステアリングの異常検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power steering abnormality detection device that switches the supply flow rate of hydraulic oil according to vehicle speed.
自動車等のステアリング操作力を軽減するために、油圧
力を利用して車輪の換向操作をパヮーアシス１〜覆るパ
ワーステアリングの！ｇ肴率が高まってきているが、一
般に車輪の換向抵抗は車速とともに変化し、高速走行域
はど抵抗が減少覆る（ばＩ向にあるため、油圧によるア
シス１−）ｊは低速走行域で大きなものが要求される反
面、高速走行域では操縦安定性を高める意味からも、む
しろマニュアルステアリングに近い程度でよい。In order to reduce the steering force of automobiles, etc., power steering uses hydraulic pressure to control wheel turning operations! Although the g consumption rate is increasing, the turning resistance of the wheels generally changes with the vehicle speed, and the resistance decreases in the high speed driving range (because it is in the I direction, the hydraulic assistance is 1-). On the other hand, in high-speed driving ranges, a steering system that is close to manual steering is sufficient in order to improve steering stability.
そこで、車速あるいはエンジン回転数に応してパワース
テアリングの油圧アクヂュ〕ニータに供給する油量を減
じ、高速安定性を改善するようにした速度感応型のパワ
ーステアリングシステムが提案されている（例えば特開
昭４８−２２０６号、特開昭４８−１０７２９号等）。Therefore, speed-sensitive power steering systems have been proposed that improve high-speed stability by reducing the amount of oil supplied to the power steering hydraulic actuator depending on the vehicle speed or engine speed (for example, (Kokai No. 48-2206, JP-A-48-10729, etc.).
これを第１図、第２図に基づいて説明すると、油圧ポン
プ１からの吐出油をバワースデアリングアクヂュエータ
２に導く管路３の途中に、その流路を絞る電磁式の流量
制御弁４が介装され、この制御弁４の前後の油圧差を一
定に保つ差圧１整弁５が設置される。To explain this based on FIGS. 1 and 2, there is an electromagnetic flow control valve in the middle of the pipe 3 that leads the oil discharged from the hydraulic pump 1 to the bower swaying actuator 2, which throttles the flow path. 4 is interposed, and a differential pressure regulating valve 5 is installed to keep the oil pressure difference before and after the control valve 4 constant.
そして、この電磁流量制御弁４は、車速センサ６力目ら
の信号が入力される制御回路７の出力信号によって比例
的に開閉制御され、低速域ではほぼ全開づ−る一方、高
速域になるにしたがい流路を絞るようになっている。The electromagnetic flow control valve 4 is controlled to open and close proportionally by the output signal of the control circuit 7 to which signals from the sixth vehicle speed sensor are input, and while it is almost fully open in the low speed range, it is opened in the high speed range. The flow path is narrowed down accordingly.
このセンサ信号はパルス信号で、制御回路７の信号増幅
器８で増幅、波形整形された後、周波数電圧変換器９に
送られ、車速に応じた電圧信号に変換されると共に、さ
らに演鋒増幅器１０で所定の電圧、電流レベルに処理さ
れ、電力増幅器（差ω）増幅器）１１に送られる。そし
て、電力増幅器１１て電磁流量制御弁４の駆動電圧、電
流に増幅され、前述したように比例開閉を行なう。なあ
、車速の極めて低速ｄ３よび高速域ての１ｌＩＩＩ御状
態を一定にするように、前記演算増幅器１０で′第３図
に示Ｊような車速−電流特性に処理し、第４図に示４よ
うな流量制御特性を得るようにしている。This sensor signal is a pulse signal, and after being amplified and waveform-shaped by the signal amplifier 8 of the control circuit 7, it is sent to the frequency-voltage converter 9, where it is converted into a voltage signal according to the vehicle speed, and is further converted to a voltage signal according to the vehicle speed. The signal is processed to a predetermined voltage and current level and sent to a power amplifier (difference ω amplifier) 11. Then, the power amplifier 11 amplifies the drive voltage and current of the electromagnetic flow control valve 4 to perform proportional opening and closing as described above. Incidentally, in order to keep the 1lIII control state constant in the extremely low speed d3 and high speed ranges of the vehicle speed, the operational amplifier 10 processes the vehicle speed-current characteristic as shown in FIG. The flow control characteristics are as follows.
これにより、車輪の換向抵抗の人きい低速域で所定のパ
ワーアシストを行なうのに十分な抽出を確保づる一方、
高速域でアクチュエータ２への供給油量を減らし、ンニ
ュアルステアリングに近い状態を保って安定性を高めて
いるのである。This ensures sufficient extraction to perform the specified power assist in the low speed range where the steering resistance of the wheels is low.
At high speeds, the amount of oil supplied to actuator 2 is reduced to maintain a state similar to that of annual steering and improve stability.
しかしながら、このように制御しても、例えば電磁流量
制御弁４への電気配線が断線したり４ると、制御弁４が
流路を絞ったままに７より、低速域でパワーステアリン
グが効かなくなつ−Ｃしまう。However, even with this control, if the electrical wiring to the electromagnetic flow control valve 4 is broken, for example, the control valve 4 will continue to restrict the flow path and the power steering will not work in the low speed range. Put away Natsu-C.
また、制御弁１４の絞り特性が逆のものでは、ｌ）ｉ線
時に全開し、高速域で効きすぎて危険を招きかねない。Furthermore, if the control valve 14 has the opposite throttling characteristics, it will be fully opened during the i-line (1) and will be too effective at high speeds, potentially causing danger.
この発明は、このようなときに警りちを発し、故障を知
らせて安全性、保守性を高めることを［］的とり−る。The present invention aims to raise the safety and maintainability by issuing an alarm in such a case and notifying the user of the failure.
そのために本発明は、電磁流量１１１］御弁の回路接地
側（低電位側）に検出抵抗を接続し、この検出抵抗にか
かる電圧の最小値を判別する比較器と、この比較器の出
力に応じて作動する警告手段とを設り、断線時に検出電
圧が低下すると比較器を介して警告手段を作動させろよ
うにしである。To this end, the present invention connects a detection resistor to the circuit ground side (low potential side) of the electromagnetic flow rate control valve, and includes a comparator that determines the minimum value of the voltage applied to this detection resistor, and a comparator that determines the minimum value of the voltage applied to the detection resistor. A warning means is provided which operates accordingly, and the warning means is activated via a comparator when the detected voltage decreases at the time of wire breakage.
以下、本発明の実施例を図面に基づいて説明する。Embodiments of the present invention will be described below based on the drawings.
第５図においで、６は車速センサ、７は制御回路で、第
２図と同じく信号増幅器８、周波数電圧変換器９、演算
増幅器１０、電力増幅器１１とから構成される。４は電
磁流量制御弁で、車速センサ６かｔうの信号に基づ゛く
制御回路７の出力により駆動開閉され、前述したように
車速の上昇に応じてパワーステアリングアクチュエータ
への供給油量を絞り込む。In FIG. 5, 6 is a vehicle speed sensor, and 7 is a control circuit, which is composed of a signal amplifier 8, a frequency-voltage converter 9, an operational amplifier 10, and a power amplifier 11, as in FIG. Reference numeral 4 denotes an electromagnetic flow control valve, which is driven to open and close by the output of the control circuit 7 based on the signal from the vehicle speed sensor 6, and controls the amount of oil supplied to the power steering actuator according to the increase in vehicle speed, as described above. Refine.
本実施例ではこの電磁流量制御弁４のソレノイド端子１
２．１３の低電位側に、所定抵抗値の検出抵抗１４が接
続され、その回路１５が接地される。In this embodiment, the solenoid terminal 1 of the electromagnetic flow control valve 4 is
A detection resistor 14 having a predetermined resistance value is connected to the low potential side of 2.13, and its circuit 15 is grounded.
そして、この検出抵抗１４にかかる電圧が比較器１Ｇの
一側に入力され、＋側に電圧信号発生器１７からの基準
電圧か人力される。この基４１電圧は、前記電力増幅器
１１から出力される最小電圧値より小さい値に設定され
る。The voltage applied to this detection resistor 14 is input to one side of the comparator 1G, and the reference voltage from the voltage signal generator 17 is input to the + side. This base 41 voltage is set to a value smaller than the minimum voltage value output from the power amplifier 11.
比較器１６は、検出抵抗１４にかかる電圧が基準電圧よ
り高いとローレベルの出力となり、低いとハイレベルの
出力となる。The comparator 16 outputs a low level when the voltage applied to the detection resistor 14 is higher than the reference voltage, and outputs a high level when the voltage is lower than the reference voltage.
この比較器１６の出力は、抵抗１８を介して警告手段と
してのランプ１９に送られ、ハレイベルのとさ、ランプ
１９を点灯する。このランプ１９（ユ、車両の運転席に
設置される。The output of the comparator 16 is sent via a resistor 18 to a lamp 19 as a warning means, and the lamp 19 is turned on at the head of the Halley bell. This lamp 19 (Y) is installed in the driver's seat of the vehicle.
即ち、制御回路７から電磁流Ｍ １ｌｊｌ＋御弁４のソ
レノイドへの断線故障がないときには、検出抵抗１４に
常にある程度以上の電圧がかかり、したがってランプ１
９は消灯状態にある。That is, when there is no disconnection failure from the control circuit 7 to the electromagnetic flow M 1ljl + solenoid of the control valve 4, a voltage above a certain level is always applied to the detection resistor 14, and therefore the lamp 1
9 is in an off state.
これに対して、断線故障が起きたどきには、電流が流れ
ないために検出抵抗１４がＯ電位となり、比較器１６か
らハイレベルの出力が出される。これにより、運転席の
ランプ１９が点灯し、故障が警告されるのである。On the other hand, when a disconnection fault occurs, the detection resistor 14 becomes O potential because no current flows, and the comparator 16 outputs a high level output. As a result, the lamp 19 on the driver's seat lights up, giving a warning of the malfunction.
このようにしたので、車両走行中の振動等によって電磁
流量制御弁４への電気配線が断線し、ステアリングが悪
化しても、運転者はすぐに異常を察知でき、故障原因、
故障箇所を知ることができる。したがって、修理等容易
に行なえ、メンテノーンスが良好となる。With this arrangement, even if the electrical wiring to the electromagnetic flow control valve 4 is broken due to vibrations while the vehicle is running and the steering deteriorates, the driver can immediately detect the abnormality and identify the cause of the failure.
You can know the location of the failure. Therefore, repairs, etc. can be easily carried out, resulting in good maintenance.
そして、断線により制御弁４が全開し、高速域でパワー
ステアリングが効きづき゛てしまうしのでは、異常を察
知してハンドル操作を抑えたり、ｊ＊度を落とす等安全
走行を維持して、危険を回避することかでさる。If a disconnection causes the control valve 4 to open fully and the power steering becomes ineffective at high speeds, the system will detect the abnormality and maintain safe driving by suppressing steering operation or reducing the speed. It's all about avoiding danger.
２した、この場合には警告手段のほかに例えばパワース
テアリングを停止二させるよう’（Ｌノコ−一エルＰ−
）機枠１等を備えれは良く、その適用は容易に可能であ
る。2, in this case, in addition to warning means, for example, stop the power steering (L saw - 1 L P -
) It is good to have a machine frame 1, etc., and its application is easily possible.
４ｆお、図示し７ないかＩＦｉ磁流Ｈ＋制御弁４の開閉
をパルス信号によりデコーーティ制御づる回路に本実施
例を適用Ｊ−る場合は、比較器′１Ｇに人力される信号
電圧の平滑化を図れば良い。4f, if this embodiment is applied to a circuit in which the opening/closing of the IFi magnetic current H+ control valve 4 is controlled by a pulse signal, the signal voltage manually applied to the comparator '1G may be smoothed. All you have to do is aim for it.
以上説明した通り、本発明によれば、電磁流量制御弁の
断線故障に１」、リスデアリングの状態か悪化した場合
に、１ぐに故障原因を察知でき、走（ｊの安全性が高め
１うれるど共に、保守性の向トが図れる。As explained above, according to the present invention, when the electromagnetic flow control valve has a disconnection failure, the cause of the failure can be detected immediately when the condition of the steering wheel has deteriorated, and the safety of running (j) is improved. At the same time, maintainability can be improved.
第１図、第２図は通常のバ［ノーステアリングの油圧回
路図とそのＩＩＩ １ａｌｉ）１」ツク図、第３図、第
４図はその車速−電流特性と車速−流量特性の１例を示
Ｊグラフ、第５図は本発明の実施例を示す制御ブロック
図である。
１・・・油圧ポンプ、２・・・パワースーノーアリング
アクヂｙ−Ｉ−夕、４・・・電磁流量制御弁、６・・・
中速セン→ノ、７・・・制御回路、１２．１３・・・ソ
し７ノイト端了、１＝′ｌ・・・検出抵抗、１６・・・
比較器、１７・・パ市斤信号光住器、１９・・・ランプ
。
特６９出願人 萱場Ｔ業株式会君代理人 弁理１
− 後 藤 政 喜 ４．ご−５，（（ギシ入
しＸ置゛′北
（Ｉ−ノヒ＼ニシFigures 1 and 2 are hydraulic circuit diagrams of normal no-steering systems, and Figures 3 and 4 are examples of vehicle speed-current characteristics and vehicle speed-flow characteristics. FIG. 5 is a control block diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Hydraulic pump, 2...Power sono ring acuity-I-Y, 4...Electromagnetic flow control valve, 6...
Medium speed sensor → ノ, 7... Control circuit, 12.13... So 7 noise end, 1='l... Detection resistor, 16...
Comparator, 17...Paichi signal light fixture, 19...Lamp. Patent No. 69 applicant Kayaba T Gyo Co., Ltd. Attorney 1
- Masaki Goto 4. Go-5, ((Gigi-entered
Claims (1)
れる圧油の流量を車速の上昇に応じて絞り込む電磁式の
流量制御弁を備えたパワーステアリング装置において、
前記電磁流量制御弁の回路接地側に検出抵抗を接続し、
この検出抵抗にががる電圧の最小値を判別づる比較器と
、この比較器の出力に応じて作動りる警告手段とを殴り
たことを特徴とするパワーステアリングの異常検出装置
。In a power steering device equipped with an electromagnetic flow control valve that throttles the flow rate of pressure oil supplied from the pump to the power steering actuator in accordance with an increase in vehicle speed,
Connecting a detection resistor to the circuit grounding side of the electromagnetic flow control valve,
A power steering abnormality detection device comprising a comparator for determining the minimum value of the voltage across the detection resistor, and a warning means activated in response to the output of the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23410682A JPS59120572A (en) | 1982-12-27 | 1982-12-27 | Abnormality detecting device in power steering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23410682A JPS59120572A (en) | 1982-12-27 | 1982-12-27 | Abnormality detecting device in power steering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59120572A true JPS59120572A (en) | 1984-07-12 |
Family
ID=16965718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23410682A Pending JPS59120572A (en) | 1982-12-27 | 1982-12-27 | Abnormality detecting device in power steering |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59120572A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6080968A (en) * | 1983-10-13 | 1985-05-08 | Nissan Motor Co Ltd | Power steering gear |
| US4869334A (en) * | 1987-04-13 | 1989-09-26 | Hitachi, Ltd. | Electric motor-driven power steering apparatus |
| CN109094643A (en) * | 2018-09-29 | 2018-12-28 | 安徽江淮汽车集团股份有限公司 | A kind of fault alarm method and system of electric boosting steering system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5697110A (en) * | 1979-12-29 | 1981-08-05 | Koyo Seiko Co Ltd | Step motor controller in flow controller for speed sensing type power steering device |
-
1982
- 1982-12-27 JP JP23410682A patent/JPS59120572A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5697110A (en) * | 1979-12-29 | 1981-08-05 | Koyo Seiko Co Ltd | Step motor controller in flow controller for speed sensing type power steering device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6080968A (en) * | 1983-10-13 | 1985-05-08 | Nissan Motor Co Ltd | Power steering gear |
| JPH0534192B2 (en) * | 1983-10-13 | 1993-05-21 | Nissan Motor | |
| US4869334A (en) * | 1987-04-13 | 1989-09-26 | Hitachi, Ltd. | Electric motor-driven power steering apparatus |
| CN109094643A (en) * | 2018-09-29 | 2018-12-28 | 安徽江淮汽车集团股份有限公司 | A kind of fault alarm method and system of electric boosting steering system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5335176A (en) | Safety system for vehicles | |
| JPH0471738B2 (en) | ||
| KR20000064885A (en) | Brake force distribution control method and control device of vehicle | |
| JPS60107458A (en) | Controller of steering force for power running gear | |
| JPS59120572A (en) | Abnormality detecting device in power steering | |
| KR100352951B1 (en) | Device for controlling brake fluid pressure | |
| JP3150001B2 (en) | Fail-safe method for anti-skid device | |
| JPS6181278A (en) | Signal processing of steering angle sensor | |
| TWI781803B (en) | Intervention fluid brake system | |
| JPS588452A (en) | Fault detector of motor in anti-skid control system | |
| JPH0322350B2 (en) | ||
| KR200181177Y1 (en) | Self diagnostic device for the power steering system | |
| JP2854725B2 (en) | Kneading equipment | |
| KR100231533B1 (en) | An accident prevention device for high speed driving | |
| JPS59120571A (en) | Control device for power steering system of vehicle speed responsive type | |
| JPH0251786B2 (en) | ||
| JP3276252B2 (en) | Anti-skid device failure detection method | |
| KR0131675Y1 (en) | Alarm device for protecting power steering system | |
| JPH0228145Y2 (en) | ||
| JPH06199222A (en) | Failure sensing method for anti-skid device | |
| JPH0872694A (en) | Fault detection for anti-skid device | |
| KR100187101B1 (en) | Apparatus and method of controlling engine output when cornering using electronic control suspension system | |
| JPH0313418Y2 (en) | ||
| KR970040603A (en) | Solenoid valve failure detection means of anti-lock braking system | |
| JPS6387375A (en) | Actuator controller |