JPS6133311A - Chassis adjusting device - Google Patents
Chassis adjusting deviceInfo
- Publication number
- JPS6133311A JPS6133311A JP15478684A JP15478684A JPS6133311A JP S6133311 A JPS6133311 A JP S6133311A JP 15478684 A JP15478684 A JP 15478684A JP 15478684 A JP15478684 A JP 15478684A JP S6133311 A JPS6133311 A JP S6133311A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle height
- signal
- valve
- chassis
- time
- 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
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0165—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】 （技術分野） この発明は、車両の車高調整装置に関するものである。[Detailed description of the invention] (Technical field) The present invention relates to a vehicle height adjustment device for a vehicle.
（従来技術）
一般に、車高調整装置においては、超音波を路面に向け
て送信する送信器および路面から反射した超音波を受信
する受信器を有する車高センサを設け、受信器からの信
号を受信し送信器から発信された超音波が受信器に反射
される迄の時間を計測することによって車高を演算し、
この演算値に応じて車高調整を行う。(Prior art) In general, a vehicle height adjustment device is provided with a vehicle height sensor that has a transmitter that transmits ultrasonic waves toward the road surface and a receiver that receives ultrasonic waves reflected from the road surface, and receives signals from the receiver. The vehicle height is calculated by measuring the time it takes for the ultrasonic waves received and emitted from the transmitter to be reflected back to the receiver.
The vehicle height is adjusted according to this calculated value.
従来のこの種の車高調整装置としては、実開昭５９−２
０１０７号公報に示された車高センサを備えたものが種
々提案されている。As a conventional vehicle height adjustment device of this type,
Various vehicles equipped with the vehicle height sensor disclosed in Japanese Patent No. 0107 have been proposed.
しかしながら、このような従来の車高調整にあっては、
送信器から発信された超音波が路面にて散乱、吸収され
、受信器に殆ど受信されなくなる等して、受信器が発す
る信号のレベルが所定の検知レベルに満たなくなると、
即座に、車高調整が行われなくなる。このため、適正な
車高調整ができないという問題点があった。However, in such conventional vehicle height adjustment,
When the ultrasonic waves emitted from the transmitter are scattered and absorbed on the road surface and are hardly received by the receiver, and the level of the signal emitted by the receiver falls below the predetermined detection level,
Vehicle height adjustment will no longer be possible immediately. For this reason, there was a problem in that the vehicle height could not be adjusted appropriately.
（発明の目的）
この発明は、前述の問題点に着目してなされたもので、
路面状況の悪化に拘らず適正な車高調整を行うことので
きる車高調整装置を提供することを目的とする。(Object of the invention) This invention was made by focusing on the above-mentioned problems.
To provide a vehicle height adjustment device capable of appropriately adjusting vehicle height regardless of deterioration of road surface conditions.
（発明の構成）
この目的を達成するための、本発明の構成は、超音波を
路面に向けて発信し、路面によって反射された前記超音
波を受信することによって信号を発する車高センサと、
該車高センサからの信号を受信し、前記超音波が発信さ
れてから受信されるまでの時間を計測することによって
車高を演算し車高の演算値が適正車高値を外れた場合に
車高調整を行う制御手段と、を備えた車高調整装置にお
いて、車高調整中、前記車高センサからの信号のレベル
が所定の検知レベルに満たなくなった場合所定時間のみ
前記車高調整を継続する前記制御手段を備えたものであ
る。(Configuration of the Invention) To achieve this object, the configuration of the present invention includes a vehicle height sensor that emits an ultrasonic wave toward a road surface and generates a signal by receiving the ultrasonic wave reflected by the road surface;
The vehicle height is calculated by receiving a signal from the vehicle height sensor and measuring the time from when the ultrasonic wave is transmitted until it is received.If the calculated value of the vehicle height deviates from the appropriate vehicle height value, the vehicle height is A vehicle height adjustment device comprising: control means for performing height adjustment; during vehicle height adjustment, if the level of the signal from the vehicle height sensor becomes lower than a predetermined detection level, the vehicle height adjustment continues for a predetermined period of time; The apparatus is equipped with the control means to perform the control.
（実施例） 以下、この発明の一実施例を図面に基づいて説明する。(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.
第２．３．４．５図において、ＩＩは自動車の車体であ
り、この車体１１の前部下側には図外のフロントアクス
ルの右側および左側に取り付けられた前布タイヤ１２お
よび前人タイヤ１３が設けられ、車体１１の後部下側に
は図外のリヤアクスルの右側および左側に取り付けられ
た後右タイヤ１４および後左タイヤ１５が設けられてい
る。In Fig. 2.3.4.5, reference numeral II denotes a car body, and on the lower front side of this car body 11, front cloth tires 12 and front tires 13 are attached to the right and left sides of a front axle (not shown). A rear right tire 14 and a rear left tire 15 are provided on the lower rear side of the vehicle body 11 and are attached to the right and left sides of a rear axle (not shown).
前布タイヤ１２の車室内側近傍の前記フロントアクスル
と車体１１との間、および前人タイヤ１３の車室内側近
傍の前記フロントアクスルと車体１１との間には、それ
ぞれ、前布アクチュエータ１６および前左アクチュエー
タ１７が介装され、後ろタイヤ１４の車室内側近傍の前
記リヤアクスルと車体１１との間、および後左タイヤ１
５の車室内側近傍の前記リヤアクスルと車体１１との間
には、それぞれ、後右アクチュエータ１８および後左ア
クチュエータ１９が介装されている。各アクチュエータ
１６．１７．１８．１９の車室内側近傍の車体１１は、
それぞれ、前布車高測定点Ａ、前人車高測定点Ｂ、後右
車高測定点Ｃ１後左車高測定点りとなっており、各車高
測定点Ａ、Ｂ、Ｃ，Ｄには、それぞれ、前布車高センサ
２０、前人車高センサ２１、後右車高セン力・２２、後
左車高センサ２３が取り付けられている。車体１１の後
部にはニアコンプレッサ２８が取り付けられており、こ
のニアコンプレッサ２Ｂから吐出された圧縮空気の内、
所定量の圧縮空気はドライヤ２９に供給されることによ
って乾燥され、所定量を越えた圧縮空気ば排出バルブ３
０から排出される。ドライヤ２９にて乾燥された圧縮空
気の内、所定量の圧縮空気は、チェックバルブ３１を介
してエアタンク３２に貯蔵された後、給気バルブ３３を
通過して流路３４に供給され、所定量を越えた圧縮空気
は直接流路３４に供給される。流路３４に供給された圧
縮空気は、前布バルブ３６、前人バルブ３７、後右バル
ブ３８、後左バルブ３９をそれぞれ介して、前布アクチ
ュエータ１６、前左アクチュエータ１７、後右アクチュ
エータ１８、後左アクチュエ＝り１９に供給される。４
１は制御装置であり、この制御装置４１ば、マイクロコ
ンビューり４２、駆動回路４３、超音波発信器４４、増
幅回路４５、整流回路４６、波形整形回路４７、ピーク
ディテクタ４８、Ａ／Ｄ変換器４９を有する。マイクロ
コンピュータ４２の前記車高センサ２０．２１．２２．
２３に対応した出カポ−１−ＯＵＴＩから出力された第
５図に示すような波形のパルス信号Ｆが超音波発信器４
４およびピークディテクタ４８に送信されると、超音波
発信の出力側から第５図に示すような断続的な超音波信
号Ｇが出力される。この超音波信号Ｇは、前記車高セン
サ２０．２１．２２．２３の各超音波送信器５１から路
面５２に向けて送信され、路面５２にて反射された後、
反射波として超音波受信器５３に受信される。超音波受
信器５３が反射波を受信すると、超音波受信器５３の出
力側から第５図に示すような断続的な超音波信号■１が
出力される。A front cloth actuator 16 and a front cloth actuator are provided between the front axle near the interior side of the front cloth tire 12 and the vehicle body 11, and between the front axle near the interior side of the front tire 13 and the vehicle body 11, respectively. A front left actuator 17 is interposed between the rear axle near the interior side of the rear tire 14 and the vehicle body 11, and the rear left tire 1.
A rear right actuator 18 and a rear left actuator 19 are interposed between the rear axle and the vehicle body 11 near the inside of the vehicle interior of the vehicle. The vehicle body 11 near the inside of the vehicle of each actuator 16, 17, 18, 19,
The front vehicle height measurement point A, the front vehicle height measurement point B, the rear right vehicle height measurement point C1, the rear left vehicle height measurement point, and each vehicle height measurement point A, B, C, and D. A front fabric vehicle height sensor 20, a front vehicle height sensor 21, a rear right vehicle height sensor 22, and a rear left vehicle height sensor 23 are respectively attached. A near compressor 28 is attached to the rear of the vehicle body 11, and out of the compressed air discharged from this near compressor 2B,
A predetermined amount of compressed air is supplied to the dryer 29 and dried, and if the compressed air exceeds the predetermined amount, the discharge valve 3
Ejected from 0. A predetermined amount of compressed air out of the compressed air dried in the dryer 29 is stored in an air tank 32 via a check valve 31, and then passed through an air supply valve 33 and supplied to a flow path 34. The compressed air exceeding this amount is directly supplied to the flow path 34. The compressed air supplied to the flow path 34 passes through the front cloth valve 36, the front valve 37, the rear right valve 38, and the rear left valve 39, respectively, to the front cloth actuator 16, the front left actuator 17, the rear right actuator 18, It is supplied to the rear left actuator 19. 4
1 is a control device, and this control device 41 includes a microcomputer 42, a drive circuit 43, an ultrasonic transmitter 44, an amplifier circuit 45, a rectifier circuit 46, a waveform shaping circuit 47, a peak detector 48, and an A/D converter. It has a container 49. The vehicle height sensor 20.21.22. of the microcomputer 42.
A pulse signal F having a waveform as shown in FIG.
4 and the peak detector 48, an intermittent ultrasonic signal G as shown in FIG. 5 is output from the output side of the ultrasonic transmission. This ultrasonic signal G is transmitted from each ultrasonic transmitter 51 of the vehicle height sensor 20.21.22.23 toward the road surface 52, and after being reflected on the road surface 52,
It is received by the ultrasonic receiver 53 as a reflected wave. When the ultrasonic receiver 53 receives the reflected wave, an intermittent ultrasonic signal (1) as shown in FIG. 5 is output from the output side of the ultrasonic receiver 53.
この超音波信号Ｈは、増幅回路４５にて増幅された後、
整流回路４６によって第５図に示ずよっな波形の信号Ｉ
に整流され、波形整形回路４７およびビークディチク汐
４８に入力される。波形整形回路４７は、信号Ｉを第５
図に示すような波形の信号、Ｊに整形し、この信号Ｊを
前記車高センサ２０．２１．２２．２３に対応した入カ
ポ−）ＩＮＩに入力する。ピークディテクタ４８は、信
号■のピーク値を検出し、このピーク値のレベルに対応
したアナログ信号ＶｒをＡ／Ｄ変換器４９に入力する。After this ultrasonic signal H is amplified by the amplifier circuit 45,
The rectifier circuit 46 generates a signal I with a different waveform than shown in FIG.
The signal is rectified into a waveform shaping circuit 47 and input into a waveform shaping circuit 48. The waveform shaping circuit 47 converts the signal I into a fifth
The signal J is shaped into a waveform signal J as shown in the figure, and this signal J is input to the input capacitor (INI) corresponding to the vehicle height sensor 20, 21, 22, 23. The peak detector 48 detects the peak value of the signal (2) and inputs an analog signal Vr corresponding to the level of this peak value to the A/D converter 49.
Ａ／Ｄ変換器４９はアナログ信号Ｖｒをデジタル信号Ｄ
ｒに変換し、このデジタル信号Ｄｒをマイクロコンピュ
ータ４２の前記車高センサ２０．２１．２２．２３に対
応した入カポ−）ＩＮ２に入力する。５５は車速Ｖを検
出する車速センサであり、この車速センサ５５は車速Ｖ
を表示する車速信号ＳＶをマイクロコンピュータ４２に
入力する。マイクロコンピュータ４２の内部には、所定
のプログラムが記憶されたＲＯＭ、各種可変データが記
憶されるＲＡＭ、パルス信号Ｆが出力されてから信号Ｊ
が入力されるまでの時間Ｔｃを検出するタイマ、各車高
測定点Ａ、Ｂ、Ｃ１Ｄが車高適正域Ｗから外れた所定の
時間Ｔａを検出する車高タイマ、デジタル信号Ｄｒのレ
ベルが所定の検知レベルに満たなくなった所定の時間Ｔ
ｄを検出するバルブタイマが内蔵されている。マイクロ
コンピュータ４２は前記信号ＪおよびＳｖに基づいて駆
動信号Ｎを駆動回路４３に送信する。駆動回路４３は、
駆動信号Ｎに基づいて、前布バルブ３６、前方バルブ３
７、後右バルブ３８、後左バルブ３９にそれぞれ前記車
高センサ２０．２１．２３．２４に対応した車高調整信
号Ｍを送信し、排気バルブ３０および給気バルブ３３に
それぞれ排気量調整信号に、および給気量調整信号に、
を送信する。The A/D converter 49 converts the analog signal Vr into a digital signal D.
r, and inputs this digital signal Dr to the input capo IN2 of the microcomputer 42 corresponding to the vehicle height sensor 20, 21, 22, 23. 55 is a vehicle speed sensor that detects the vehicle speed V;
A vehicle speed signal SV that displays SV is input to the microcomputer 42. Inside the microcomputer 42, there is a ROM in which a predetermined program is stored, a RAM in which various variable data are stored, and a signal J after the pulse signal F is output.
A timer that detects the time Tc until the vehicle height is input, a vehicle height timer that detects a predetermined time Ta during which each vehicle height measurement point A, B, and C1D deviate from the appropriate vehicle height range W, and a vehicle height timer that detects the predetermined time Ta when the digital signal Dr is at a predetermined level. The predetermined time T at which the detection level of
It has a built-in valve timer that detects d. The microcomputer 42 sends a drive signal N to a drive circuit 43 based on the signals J and Sv. The drive circuit 43 is
Based on the drive signal N, the front cloth valve 36 and the front valve 3
7. Send the vehicle height adjustment signal M corresponding to the vehicle height sensor 20.21.23.24 to the rear right valve 38 and the rear left valve 39, respectively, and send the displacement adjustment signal to the exhaust valve 30 and the intake valve 33, respectively. to, and to the supply air volume adjustment signal,
Send.
次に、この発明の一実施例の作用を第６図に示すフロー
図に基づいて説明する。尚、このフｏ−図は前布の車高
調整についてのフロー図であるが、他の車高調整は前布
の車高調整と同様であるので、その説明を省略する。Next, the operation of one embodiment of the present invention will be explained based on the flow diagram shown in FIG. Note that this diagram is a flowchart for adjusting the vehicle height of the front cloth, but since other vehicle height adjustments are the same as the vehicle height adjustment of the front cloth, the explanation thereof will be omitted.
本制御は、所定の時間ごとに割込み処理されるもので、
車高調整するにあたって、まず、ステップ１００におい
て、車高測定点へが車高適正域Ｗから外れている時間Ｔ
１が所定時間Ｔａ以上であるか否かを判別する。Ｔ１＜
Ｔａの場合、車高調整がされていないと判断し、ステッ
プ１０１に進む。次に、ステップ１０１において、車高
測定点Ａが車高適正域Ｗにあるが否かを判別する。車高
測定点Ａが車高適正域Ｗにある場合、車高調整不要と判
断し、ステップ１０２に進み車高タイマをクリアした後
、ステップ１０３に進み、前布バルブ３６、給気バルブ
３３、排気バルブ３０をすべて０ＦＦＬ、再びステップ
１００に戻る。ステップ１０１において、車高測定点Ａ
が車高適正域Ｗから外れた場合、車高調整の必要がある
と判断し、ステップ１０４に進む。次に、ステップ１０
４において、再び、車高測定点Ａが車高適正域Ｗから外
れている時間Ｔ、が所定時間Ｔａ以上であるか否かを判
別する。Ｔ、＜Ｔａの場合、車高調整不要と判断、し、
車高タイマをクリアすることなく、前記ステップ１０３
に進む。This control is handled by interrupts at predetermined intervals.
In adjusting the vehicle height, first, in step 100, the time T during which the vehicle height measurement point is outside the appropriate vehicle height range W is determined.
1 is longer than a predetermined time Ta. T1<
If Ta, it is determined that the vehicle height has not been adjusted, and the process proceeds to step 101. Next, in step 101, it is determined whether the vehicle height measurement point A is within the appropriate vehicle height range W or not. If the vehicle height measurement point A is within the appropriate vehicle height range W, it is determined that the vehicle height adjustment is not necessary, and the process proceeds to step 102, where the vehicle height timer is cleared, and then the process proceeds to step 103, where the front cloth valve 36, the air intake valve 33, Turn all exhaust valves 30 to 0FFL and return to step 100 again. In step 101, vehicle height measurement point A
If the vehicle height is outside the appropriate vehicle height range W, it is determined that vehicle height adjustment is necessary, and the process proceeds to step 104. Next, step 10
4, it is again determined whether the time T during which the vehicle height measurement point A is outside the appropriate vehicle height range W is longer than the predetermined time Ta. If T, <Ta, it is determined that vehicle height adjustment is not necessary.
Step 103 without clearing the vehicle height timer
Proceed to.
Ｔ１≧Ｔａの場合、車高調整の必要があると判断し、ス
テップ１０６に進む。再びステップ１００において、Ｔ
１≧Ｔａの場合、車高調整中であると判断し、ステップ
１０５に進む。次に、ステップ１０６において、車高測
定点Ａが適正車高域Ｗの中央にあるか否かを判別する。If T1≧Ta, it is determined that vehicle height adjustment is necessary, and the process proceeds to step 106. Again in step 100, T
If 1≧Ta, it is determined that the vehicle height is being adjusted, and the process proceeds to step 105. Next, in step 106, it is determined whether the vehicle height measurement point A is in the center of the appropriate vehicle height range W.
車高測定点Ａが適正車高域Ｗの中央にある場合、車高調
整を継続する必要がないと判断し、前記ステップ１０２
に進み、車高測定点Ａが適正車高域Ｗの中央にない場合
、車高調整を継続する必要があると判断し、前記ステッ
プ１０５に進む。次に、ステップ１０５において、路面
５２からの反射波のレベルｈが所定レベルｈｏ以上ある
か否か、即ち、デジタル信号Ｄｒのレベルが所定の検知
レベル以上であるか否かを判別する。デジタル信号Ｄｒ
のレベルが所定レベル以上である場合、ステップ１０７
に進み、バルブタイマに所定時間Ｔｄをセントした後、
ステップ１１０に進む。デジタル信号Ｄｒのレベルが所
定の検知レベルに満たない場合、ステップ１０８に進む
。次に、ステップ１０８において、バルブタイマがバル
ブタイマフラグφであるか否かを判別する。ここで、バ
ルブタイマフラグφは、デジタル信号Ｄｒのしヘルが所
定レベルに満たなくなった時間Ｔ２が所定時間Ｔｄ以上
であることを示すフラグである。バルブタイマーφの場
合、Ｔ２≧Ｔｄであるから、車高調整を継続する必要が
ないと判断し、前記ステップ１０３に進む。バルブタイ
マ≠φの場合、Ｔｚ＜Ｔｄであるから、車高調整を継続
する必要があると判断し、ステップ１０９に進む。次に
、ステップ１０９において、バルブタイマを１つディク
リメントした後、ステップ１１０に進む。次に、ステッ
プ１１０において、車高測定点Ａを上側に車高調整する
必要があるか否かを判別する。車高測定点Ａを上側に車
高調整する必要がある場合、ステップ１１１に進み、前
布バルブ３６および給気バルブ３３をＯＮした後、再び
ステップ１００に進む。車高測定黒人を下側に車高調整
する必要がある場合、ステップ１１２に進み、前布バル
ブ３６および排気バルブ３０をＯＮした後、一旦制御を
終了する。このように、路面５２からの反射波のレベル
ｈが所定レベルｈＯに満たなくなった場合でも、デジタ
ル信号Ｄｒのレベルが所定の検知レベルに満たなくなっ
た時間Ｔ２が所定時間Ｔｄに達する迄は、車高測定点Ａ
の車高調整を継続するので、新雪路面上の走行等により
路面からの反射波が一時的に少なくなっても制御が暴走
することはなく、制御が完了する迄の時間が短縮され、
前布バルブ３６および前布アクチュエータ１６の作動回
数が減少されることによりこれらの耐久性が向上すると
ともにこれらの切換音が減少し、車高制御の品質が向上
する。If the vehicle height measurement point A is in the center of the appropriate vehicle height range W, it is determined that there is no need to continue the vehicle height adjustment, and the process is performed in step 102.
If the vehicle height measurement point A is not in the center of the appropriate vehicle height range W, it is determined that it is necessary to continue adjusting the vehicle height, and the procedure advances to step 105. Next, in step 105, it is determined whether the level h of the reflected wave from the road surface 52 is equal to or higher than a predetermined level ho, that is, whether the level of the digital signal Dr is equal to or higher than a predetermined detection level. Digital signal Dr
If the level of is equal to or higher than the predetermined level, step 107
After proceeding to and setting Td to the valve timer for a predetermined time,
Proceed to step 110. If the level of the digital signal Dr is less than the predetermined detection level, the process proceeds to step 108. Next, in step 108, it is determined whether the valve timer is the valve timer flag φ. Here, the valve timer flag φ is a flag indicating that the time T2 at which the current level of the digital signal Dr becomes less than a predetermined level is equal to or longer than the predetermined time Td. In the case of the valve timer φ, since T2≧Td, it is determined that there is no need to continue adjusting the vehicle height, and the process proceeds to step 103. If the valve timer≠φ, since Tz<Td, it is determined that it is necessary to continue adjusting the vehicle height, and the process proceeds to step 109. Next, in step 109, the valve timer is decremented by one, and then the process proceeds to step 110. Next, in step 110, it is determined whether the vehicle height needs to be adjusted upward at the vehicle height measurement point A. If it is necessary to adjust the vehicle height so that the vehicle height measurement point A is upward, the process proceeds to step 111, and after turning on the front cloth valve 36 and the air intake valve 33, the process proceeds to step 100 again. If it is necessary to adjust the vehicle height to the lower side, the process proceeds to step 112, where the front cloth valve 36 and the exhaust valve 30 are turned on, and then the control is temporarily terminated. In this way, even if the level h of the reflected wave from the road surface 52 becomes less than the predetermined level hO, the vehicle will continue to operate until the time T2 at which the level of the digital signal Dr becomes less than the predetermined detection level reaches the predetermined time Td. High measurement point A
Since the vehicle height adjustment continues, even if the reflected waves from the road surface temporarily decrease due to driving on freshly snowed roads, the control will not run out of control, and the time it takes to complete the control will be shortened.
By reducing the number of operations of the front cloth valve 36 and the front cloth actuator 16, their durability is improved and their switching noise is reduced, thereby improving the quality of vehicle height control.
次に、前記一実施例の作用を第７図に示すタイムチャー
トに基づいて説明−する。Next, the operation of the above embodiment will be explained based on the time chart shown in FIG.
まず、車高測定点Ａがステノブ口において車高適正域Ｗ
から下側に外れると、前記車高タイマにて前記時間Ｔ、
が計測される。前記時間Ｔ、が経過しステノブ口に至る
と、時間Ｔ２−所定時間Ｔａとなる。ここで、前布バル
ブ３６および給気バルブ３０が共にＯＮされ、前布アク
チュエータ１６が作動することにより、車体１１の前布
の車高調整が開始される。前布の車高調整が所定時間継
続されると、車高測定点Ａは車高適正域Ｗに侵入する。First, vehicle height measurement point A is at the vehicle height appropriate range W at the steno knob opening.
If the vehicle falls below the vehicle height timer, the vehicle height timer indicates the time T,
is measured. When the above-mentioned time T has elapsed and the stethoscope reaches the steno knob opening, the time becomes T2 - the predetermined time Ta. Here, both the front cloth valve 36 and the air intake valve 30 are turned on, and the front cloth actuator 16 is operated, thereby starting the vehicle height adjustment of the front cloth of the vehicle body 11. When the vehicle height adjustment of the front cloth continues for a predetermined period of time, the vehicle height measurement point A enters the appropriate vehicle height range W.
しかし、前布の車高調整は停止しない。前布の車高調整
がさらに継続され、ステノブ口に至ると、路面５２から
の反射波のレベルｈが所定レベルｈＯに満たなくなる。However, the vehicle height adjustment of the front cloth does not stop. The vehicle height adjustment of the front cloth is further continued, and when the steering knob opening is reached, the level h of the reflected waves from the road surface 52 becomes less than the predetermined level hO.
ここで、前布の車高調整は停止せず、前記バルブタイマ
は前記時間Ｔ２の計測を開始する。前記時間Ｔ２がさら
に経過すると、時間Ｔ２〈所定時間Ｔ４の間は、前布の
車高調整はさらに継続する。前記時間Ｔ２がさらに経過
し、ステノブ口に至ると、時間Ｔ２＝所定時間Ｔｄとな
る。ここで、前布バルブ３６および給気バルブ３３が共
にＯＦＦされ、前布の車高調整は停止される。この前布
の車高調整の停止状態が継続され、ステノブ口に至ると
、前記レベルｈは所定レベルｈＯに達し、前布の車高調
整が再び開始される。Here, the vehicle height adjustment of the front cloth does not stop, and the valve timer starts measuring the time T2. When the time T2 further passes, the vehicle height adjustment of the front cloth continues for a period of time T2 (predetermined time T4). When the time T2 further passes and the steno knob opening is reached, the time T2 becomes the predetermined time Td. Here, both the front cloth valve 36 and the air supply valve 33 are turned off, and the vehicle height adjustment of the front cloth is stopped. This stopped state of vehicle height adjustment of the front cloth continues, and when the steering knob opening is reached, the level h reaches a predetermined level hO, and the vehicle height adjustment of the front cloth is started again.
前布の車高調整がさらに継続され、ステノブ口に至ると
、路面５２からの反射波のレベルｈが再び所定レベルｈ
ｏに満たなくなる。ここで、前布の車高調整は停止せず
、前記バルブタイマは再び前記時間Ｔ２の計測を開始す
る。前記時間Ｔ２がさらに経過すると、時間Ｔ２く所定
時間Ｔａ２間は、前布の車高調整はさらに継続する。When the vehicle height adjustment of the front cloth continues further and reaches the steering knob opening, the level h of the reflected waves from the road surface 52 returns to the predetermined level h.
It becomes less than o. Here, the vehicle height adjustment of the front cloth does not stop, and the valve timer starts measuring the time T2 again. When the time T2 further elapses, the vehicle height adjustment of the front cloth continues for a predetermined time Ta2 (time T2).
前記時間Ｔ２がさらに経過し、ステノブ口に至ると、時
間Ｔ２−所定時間Ｔｄとなる。ここで、前布バルブ３６
および給気バルブ３３が共にＯＦＦされ、前布の車高調
整は停止される。この前布の車高調整の停止状態が継続
され、ステノブ口に至ると、前記レベルｈは所定レベル
ｈＯに達し、前布の車高調整が再び開始される。このよ
うに、前記レベルｈが所定レベルｈＯに満たな（なる毎
に、時間Ｔ２が所定時間Ｔｄに達する迄は、前布の車高
調整を継続するので、新雪路面上の走行等により路面か
らの反射波が一時的に少なくなっても制御が暴走するこ
とはなく、制御が完了する迄の時間が短縮され、前布バ
ルブ３６および前布アクチュエータ１６の作動回数が減
少されることによりこれらの耐久性が向上するとともに
これらの切換音が減少し、車高制御の品質が向上する。When the above-mentioned time T2 further passes and reaches the steno knob opening, the time becomes T2 - the predetermined time Td. Here, the front cloth valve 36
Both the air intake valve 33 and the intake valve 33 are turned off, and the front cloth vehicle height adjustment is stopped. This stopped state of vehicle height adjustment of the front cloth continues, and when the steering knob opening is reached, the level h reaches a predetermined level hO, and the vehicle height adjustment of the front cloth is started again. In this way, the vehicle height adjustment of the front cloth is continued until the time T2 reaches the predetermined time Td each time the level h reaches the predetermined level hO. Even if the reflected waves of the Durability is improved, these switching noises are reduced, and the quality of vehicle height control is improved.
前布の車高調整がさらに継続され、ステップ町において
、車高測定点Ａが車高適正域Ｗの中央に達すると、車高
タイマはクリアされ、前布バルブ３６および給気バルブ
３３が共にＯＦＦされる。この結果、前布の車高調整は
終了する。When the vehicle height adjustment of the front cloth is further continued and the vehicle height measurement point A reaches the center of the appropriate vehicle height range W at the step town, the vehicle height timer is cleared and both the front cloth valve 36 and the air intake valve 33 are It will be turned off. As a result, the vehicle height adjustment of the front cloth is completed.
尚、上記作用説明では、前布の車高調整について説明し
たが、他の車高調整も前布の車高調整と同様であるので
、その説明を省略する。In the above operation description, the vehicle height adjustment of the front cloth has been explained, but other vehicle height adjustments are the same as the vehicle height adjustment of the front cloth, so the explanation thereof will be omitted.
（発明の効果）
以上説明したように、この発明によれば、車高センサか
らの信号のレベルが所定レベル以上の場合前記車高調整
を行い、車高センサからの信号のレベルが所定レベルに
満たなくなった場合所定時間のみ前記車高調整を継続す
る前記制御手段を備えたので、路面からの反射波の一時
的な減少による制御の暴走が防止され、制御が完了する
迄の時間が短縮され、車高調整の作動回数の減少により
装置の耐久性が向上し且つ装置が発、する切換音が減少
し、車高制御の品質が向上するという効果が得られる。(Effects of the Invention) As explained above, according to the present invention, when the level of the signal from the vehicle height sensor is equal to or higher than a predetermined level, the vehicle height adjustment is performed, and the level of the signal from the vehicle height sensor reaches the predetermined level. Since the control means continues the vehicle height adjustment for a predetermined period of time when the vehicle height is no longer satisfied, runaway control due to a temporary decrease in reflected waves from the road surface is prevented, and the time required for the control to be completed is shortened. By reducing the number of vehicle height adjustment operations, the durability of the device is improved, the switching noise generated by the device is reduced, and the quality of vehicle height control is improved.
第１図はこの発明の特許請求の範囲に記載されている機
能を示す概略構成図、第２図はこの発明に係る車高調整
装置の一実施例を示す平面図、第３図は前記一実施例の
概略構成図、第４図は前記一実施例に使われている制御
装置および車高センサの概略構成図、第５図は前記一実
施例における主要信号の波形を示すタイミングチャート
、第６図は前記一実施例におけるシステムプログラムの
構成を示すフロー図、第７図は前記一実施例の動作を説
明するためのタイミングチャート、である。
２０．２１．２２．２３−−−−一車高センサ、４１−
制御手段、
５２−−−−−路面、
Ｇ〜−−超音波、
Ｔ ｃ −−−−−−超音波が発信されてから受信され
る迄の時間、
Ｗ −−−−−−車高適正域、
Ａ、Ｂ、Ｃ，、Ｄ−−一車高測定点、
ｈ 、−、−一反射波レベル、
ｈｏ−一反射波所定レベル、
Ｔ ｄ −−−−一定時間。FIG. 1 is a schematic configuration diagram showing the functions recited in the claims of the present invention, FIG. 2 is a plan view showing an embodiment of the vehicle height adjustment device according to the present invention, and FIG. FIG. 4 is a schematic configuration diagram of the control device and vehicle height sensor used in the embodiment; FIG. 5 is a timing chart showing waveforms of main signals in the embodiment; FIG. FIG. 6 is a flow diagram showing the configuration of a system program in the embodiment, and FIG. 7 is a timing chart for explaining the operation of the embodiment. 20.21.22.23----Vehicle height sensor, 41-
Control means, 52 ---- Road surface, G ~--- Ultrasonic wave, T c ---- Time from when the ultrasonic wave is transmitted until it is received, W ------- Appropriate vehicle height Area, A, B, C,, D--1 vehicle height measurement point, h,-,--1 reflected wave level, ho--1 reflected wave predetermined level, Td---- fixed time.
Claims (1)
発する車高センサと、該車高センサからの信号を受信し
、前記超音波が発信されてから受信されるまでの時間を
計測することによって車高を演算し車高の演算値が適正
車高値を外れた場合に車高調整を行う制御手段と、を備
えた車高調整装置において、車高調整中、前記車高セン
サからの信号のレベルが所定の検知レベルに満たなくな
った場合所定時間のみ前記車高調整を継続する前記制御
手段を備えたことを特徴とする車高調整装置。[Scope of Claims] A vehicle height sensor that emits a signal by transmitting ultrasonic waves toward the road surface and receiving the ultrasonic waves reflected by the road surface; A control means for calculating a vehicle height by measuring the time from when a sound wave is transmitted until it is received, and adjusting the vehicle height when the calculated value of the vehicle height deviates from an appropriate vehicle height value. In the adjustment device, the vehicle is characterized in that the control means continues the vehicle height adjustment only for a predetermined time when the level of the signal from the vehicle height sensor becomes lower than a predetermined detection level during the vehicle height adjustment. High adjustment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15478684A JPS6133311A (en) | 1984-07-24 | 1984-07-24 | Chassis adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15478684A JPS6133311A (en) | 1984-07-24 | 1984-07-24 | Chassis adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6133311A true JPS6133311A (en) | 1986-02-17 |
Family
ID=15591865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15478684A Pending JPS6133311A (en) | 1984-07-24 | 1984-07-24 | Chassis adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6133311A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016028954A (en) * | 2011-05-27 | 2016-03-03 | コンチネンタル・テベス・アーゲー・ウント・コンパニー・オーハーゲー | Method for monitoring and controlling air type car height of chassis device |
| CN113056380A (en) * | 2018-12-07 | 2021-06-29 | 斯堪尼亚商用车有限公司 | Method performed by a control device for controlling the position of a vehicle relative to a platform, control device and vehicle comprising such a control device |
-
1984
- 1984-07-24 JP JP15478684A patent/JPS6133311A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016028954A (en) * | 2011-05-27 | 2016-03-03 | コンチネンタル・テベス・アーゲー・ウント・コンパニー・オーハーゲー | Method for monitoring and controlling air type car height of chassis device |
| CN113056380A (en) * | 2018-12-07 | 2021-06-29 | 斯堪尼亚商用车有限公司 | Method performed by a control device for controlling the position of a vehicle relative to a platform, control device and vehicle comprising such a control device |
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