JPH0645289B2 - Suspension controller - Google Patents
Suspension controllerInfo
- Publication number
- JPH0645289B2 JPH0645289B2 JP60212465A JP21246585A JPH0645289B2 JP H0645289 B2 JPH0645289 B2 JP H0645289B2 JP 60212465 A JP60212465 A JP 60212465A JP 21246585 A JP21246585 A JP 21246585A JP H0645289 B2 JPH0645289 B2 JP H0645289B2
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- vehicle height
- output
- sensor
- displacement
- 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.)
- Expired - Lifetime
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、サスペンション制御装置に関し、特に、車高
制御とショックアブソーバの減衰力制御の両機能を備え
たサスペンション制御装置に関する。Description: TECHNICAL FIELD The present invention relates to a suspension control device, and more particularly to a suspension control device having both a vehicle height control function and a shock absorber damping force control function.
特公昭59−14365 号公報には車高の変位に加えて車高の
変位の速度（変化率）をも演算検出して車高制御するこ
とにより、車高を車両の運転状態にかかわらず制御でき
る車高調整装置が記載されている。JP-B-59-14365 discloses that the vehicle height can be controlled regardless of the operating state of the vehicle by calculating and detecting the velocity (rate of change) of the vehicle height displacement in addition to the vehicle height displacement. A possible vehicle height adjustment device is described.
特開昭57−182509号公報には車速を検出する車速センサ
（６１）と、油圧緩衝器の変位を検出する変位センサ
（６２）と、車両の加速度を検出する加速度センサ（６
３）とを設けた油圧緩衝器の減衰力制御装置が記載され
ている。JP-A-57-182509 discloses a vehicle speed sensor (61) for detecting a vehicle speed, a displacement sensor (62) for detecting a displacement of a hydraulic shock absorber, and an acceleration sensor (6) for detecting an acceleration of a vehicle.
3) A damping force control device for a hydraulic shock absorber provided with and is described.
さらにこれには、車速センサの出力により低速域で緩衝
器の緩衝特性をやわらかくし、高速域では逆に緩衝器の
緩衝特性を固くすることが記載されている。Further, it is described that the output of the vehicle speed sensor softens the cushioning characteristics of the shock absorber in the low speed range, and conversely, the shock absorbing characteristics of the shock absorber are hardened in the high speed range.
また、加速度センサの出力により、減速が検出されたと
きには伸側減衰力を高め、加速が検出されたときには圧
側減衰力を高め、減速時の後輪の浮き上がりを防止，加
速時の前輪の沈み込み防止を行うことも記載されてい
る。Also, the output of the acceleration sensor enhances the extension side damping force when deceleration is detected, and the compression side damping force when acceleration is detected to prevent the rear wheels from rising during deceleration and to sink the front wheels during acceleration. Preventive measures are also described.
さらにまた、変位センサの出力により、緩衝器の伸側で
は収縮変位が増加するほど減衰力を低下させ、圧側では
変位が最大伸位置から中立位置までゼロで、以下収縮す
るにつれて減衰力を急上昇させることが記載されてい
る。Furthermore, due to the output of the displacement sensor, the damping force decreases as the contraction displacement increases on the expansion side of the shock absorber, the displacement is zero from the maximum expansion position to the neutral position on the compression side, and the damping force increases sharply as the contraction decreases. Is described.
特開昭59−59511 号公報には車高調整するにあたり車速
センサで停車中か走行中かを判別し、車高設定器の出力
を切り換えることにより、走行，停止状態に許される車
高値の限界内で車高調整する車高調整装置が記載されて
いる。Japanese Patent Laid-Open No. 59-59511 discloses a vehicle speed limit that is determined by a vehicle speed sensor when the vehicle height is adjusted and the output of a vehicle height setting device is switched to limit the vehicle height value allowed for running and stopping. A vehicle height adjusting device for adjusting the vehicle height inside is described.
実開昭59−114312号の出願明細書のマイクロコピーには
車高変化に応じて車高調整するにあたり、車両が停止中
か走行中かによって車高変化の判定基準値を切り換える
車高調整装置が記載されている。A microcopy of the specification of Japanese Utility Model Application No. 59-114312 is a vehicle height adjustment device that switches the reference value for vehicle height change depending on whether the vehicle is stopped or running when adjusting the vehicle height according to the vehicle height change. Is listed.
これら従来技術では車高変位センサの出力で車両の加減
速状態を検出すること、車速センサ等で車両が停止中か
走行中かを判定すること、変位センサの出力で車高制御
すること及び車両の加減速状態に応じてショックアブソ
ーバの減衰力を制御することは個々には公知の技術であ
る。In these conventional technologies, the acceleration / deceleration state of the vehicle is detected by the output of the vehicle height displacement sensor, the vehicle speed sensor or the like is used to determine whether the vehicle is stopped or running, and the vehicle height control is performed by the output of the displacement sensor. It is a publicly known technique to control the damping force of the shock absorber according to the acceleration / deceleration state.
しかし、これら従来技術では、ショックアブソーバの減
衰力の制御と車高制御とは別々のセンサで行う必要があ
った。However, in these conventional techniques, it is necessary to perform control of the damping force of the shock absorber and vehicle height control by separate sensors.
本発明の目的は、一つの車高センサの出力で上記２つの
制御を行える様にする点にある。An object of the present invention is to enable the above two controls to be performed by the output of one vehicle height sensor.
本発明の上記目的は以下の構成によって達成できる。 The above object of the present invention can be achieved by the following configurations.
車両が停止中か走行中かを判定する走行状態判定手段
と、前記走行状態判定手段の出力によって車両が走行中
であることが検知されたとき、車高変位センサの出力か
ら検出された車両の加減速状態に応じて前記ショックア
ブソーバの減衰力を制御するとともに、前記走行状態判
定手段の出力によって、車両が停止中であることが検知
されたとき、変位センサの出力に応じて車高調整を行う
制御手段を設ける。When the vehicle is detected to be traveling by the output of the traveling state determination means and the traveling state determination means for determining whether the vehicle is stopped or traveling, the vehicle detected from the output of the vehicle height displacement sensor The damping force of the shock absorber is controlled according to the acceleration / deceleration state, and when the output of the traveling state determination means detects that the vehicle is stopped, the vehicle height is adjusted according to the output of the displacement sensor. Providing control means to perform.
この様に構成された本発明によれば、車両の走行状態判
定手段によって車両が停止中か走行中かを判定し、車両
が停止中に変位センサの出力があった場合は静的荷重変
化として同変位センサの出力に応じて車高調整を行い、
車両が走行中に変位センサの出力があった場合は動的荷
重変化として同変位センサの出力から得られた加減速状
態に応じてショックアブソーバの減衰力を制御するの
で、同じ車高変位センサで２つの制御が可能となり、し
かも同じ変位センサの出力で両者を制御するにあたり静
的荷重の変化の下でショックアブソーバの減衰力が制御
されたり、動的荷重の変化の下で車高調整が行われたり
する問題点がない。According to the present invention configured as described above, the traveling state determination means of the vehicle determines whether the vehicle is stopped or traveling, and when the output of the displacement sensor is output while the vehicle is stopped, the static load change is determined. The vehicle height is adjusted according to the output of the displacement sensor,
When the displacement sensor output is output while the vehicle is running, the damping force of the shock absorber is controlled according to the acceleration / deceleration state obtained from the displacement sensor output as a dynamic load change. Two controls are possible, and in controlling both with the output of the same displacement sensor, the damping force of the shock absorber is controlled under the change of static load, and the vehicle height is adjusted under the change of dynamic load. There is no problem of breaking.
以下、本発明の実施例について説明する。 Examples of the present invention will be described below.
第１図には、本発明の一実施例が示されている。FIG. 1 shows an embodiment of the present invention.
図において、４ビツトの出力をもつ即ち、車体変位を１
６分割できる車高センサ１、坂道であることを検出する
斜度検出センサ２、速度を検出する車速センサ３は、各
々マイクロコンピュータ４に入力されており、前記マイ
クロコンピュータ４からは減衰力可変駆動回路５、車高
調整駆動回路６に出力信号が出ており、ソフト切換ソレ
ノイド７、ハード切換ソレノイド８により、シヨツクア
ブソーバ９の減衰力を可変している。一方、前記車高調
整駆動回路６により、吸気用バルブ１０、および排気用
バルブ１１を駆動し、空気ばね１２の圧力を調整してい
る。本実施例においては、加減速検出と、車高検出を、
同一のセンサ−車高センサ１で形成しているため、検出
した変位が、静荷重変化（人の乗降，積荷の変化）によ
るものか、加速度の発生に帰因するものかを判断しなけ
ればならない。元来、静荷重変化とは、停止中にしかあ
りえない現象のため、車速センサ３により、走行中かど
うかを判定することで、車高調整処理、減衰力調整処理
のどちらを行なうか決定している。本実施例において
は、３Km／ｈ以上の時に減衰力調整処理、３Km／ｈ未満
で車高調整処理に移る。一方、坂道走行時には、定速走
行であつても車体変位が発生しているため、それを斜度
センサ２で補正し、斜面による変位を除いたものを算出
している。以上の処理をマイクロコンピュータ４内部で
行なつており、そのフローチヤートを第２図に示す。ま
た、ハードソフト切換判定フロー、車高調整フローを第
３図に示す。なお、車高基準値は、車高センサ１の１６
レベルのいずれにも設定でき、前記レベルからはずれた
場合を、基準値外と見なす。また、加速度の判定は、基
準値（斜度センサで補正した値）から、２レベル以上変
化した場合、加速度発生と見なしている。In the figure, with an output of 4 bits, that is, the vehicle body displacement is 1
A vehicle height sensor 1 that can be divided into six, a slope detection sensor 2 that detects a slope, and a vehicle speed sensor 3 that detects speed are input to a microcomputer 4, respectively, and the damping force variable drive is performed from the microcomputer 4. Output signals are output to the circuit 5 and the vehicle height adjustment drive circuit 6, and the damping force of the shock absorber 9 is varied by the soft switching solenoid 7 and the hardware switching solenoid 8. On the other hand, the vehicle height adjusting drive circuit 6 drives the intake valve 10 and the exhaust valve 11 to adjust the pressure of the air spring 12. In this embodiment, acceleration / deceleration detection and vehicle height detection are
Since the same sensor-vehicle height sensor 1 is used, it is necessary to determine whether the detected displacement is due to a change in static load (a person getting on and off, a change in a load) or due to the generation of acceleration. I won't. Originally, the static load change is a phenomenon that can occur only when the vehicle is stopped. Therefore, the vehicle speed sensor 3 determines whether or not the vehicle is running, and thus determines whether the vehicle height adjustment processing or the damping force adjustment processing is performed. There is. In the present embodiment, the damping force adjusting process is performed when the speed is 3 km / h or more, and the vehicle height adjusting process is performed when the speed is less than 3 km / h. On the other hand, when the vehicle is traveling on a slope, displacement of the vehicle body occurs even during traveling at a constant speed. Therefore, the inclination sensor 2 corrects the displacement, and the displacement due to the slope is removed. The above processing is performed inside the microcomputer 4, and its flow chart is shown in FIG. Further, FIG. 3 shows a hardware / software switching determination flow and a vehicle height adjustment flow. The vehicle height reference value is 16 for the vehicle height sensor 1.
It can be set to any of the levels, and if it deviates from the level, it is regarded as outside the standard value. Further, the acceleration is judged to be generated when the reference value (value corrected by the gradient sensor) changes by two levels or more.
本実施例によれば、同一の変化センサを用いても車高調
整と減衰力調整の処理を分散して行なうことができる。
またシステムの小型化・保全性に対しても有効である。According to this embodiment, the vehicle height adjustment and the damping force adjustment processing can be performed in a distributed manner even if the same change sensor is used.
It is also effective for downsizing and maintainability of the system.
以上説明したように、本発明によれば、車速センサの出
力によって、車両が停止中か走行中かを判定し、停止中
には車高センサの出力に応じて車高を制御し、走行中に
は同じ車高センサの出力から得られた車両の加減速状態
に応じてショックアブソーバの減衰力を制御する様に構
成したので、一つの車高センサで確実に車高制御とショ
ックアブソーバの減衰力制御の２つの制御を行うことが
できる。As described above, according to the present invention, the output of the vehicle speed sensor is used to determine whether the vehicle is stopped or traveling, and while the vehicle is stopped, the vehicle height is controlled according to the output of the vehicle height sensor, and the vehicle is traveling. Is configured to control the damping force of the shock absorber according to the acceleration / deceleration state of the vehicle obtained from the output of the same vehicle height sensor, so the vehicle height control and shock absorber damping can be reliably performed with one vehicle height sensor. Two controls of force control can be performed.
第１図は本発明の実施例を示す構成図、第２図はマイク
ロコンピユータにおける処理フローチヤート、第３図は
車高調整処理，減衰力調整処理のフローチヤートであ
る。 １……車高センサ、２……斜度検出センサ、３……車速
センサ、４……マイクロコンピュータ、５……減衰力可
変駆動回路、６……車高調整駆動回路、７……ソフト切
換用ソレノイド、８……ハード切換用ソレノイド、９…
…シヨツクアブソーバ、１０……吸気用バルブ、１１…
…排気用バルブ、１２……空気ばね、１３……高圧リザ
ーブタンク。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a processing flow chart in a microcomputer, and FIG. 3 is a flow chart of vehicle height adjustment processing and damping force adjustment processing. 1 ... Vehicle height sensor, 2 ... Slope detection sensor, 3 ... Vehicle speed sensor, 4 ... Microcomputer, 5 ... Damping force variable drive circuit, 6 ... Vehicle height adjustment drive circuit, 7 ... Soft switching Solenoid, 8 ... Hardware switching solenoid, 9 ...
... Shock absorber, 10 ... Intake valve, 11 ...
... Exhaust valve, 12 ... Air spring, 13 ... High pressure reserve tank.
Claims (1)
ソーバの減衰力を制御する減衰力制御手段と、車高の変
位を電気的に検出する変位センサの出力に応じて車高調
整を行う車高調整装置とを有するサスペンション制御装
置において、前記車両が停止中か走行中かを判定する走
行状態判定手段と、 前記走行状態判定手段の出力によって車両が走行中であ
ることが検知されたとき、前記変位センサの出力から車
両の加減速状態を検出して前記ショックアブソーバの減
衰力を制御するとともに、前記走行状態判定手段の出力
によって、車両が停止中であることが検知されたとき前
記変位センサの出力に応じて車高調整を行う制御手段を
設けたことを特徴とするサスペンション制御装置。1. A vehicle height adjustment is performed according to the outputs of a damping force control means for detecting the acceleration / deceleration state of the vehicle to control the damping force of a shock absorber and a displacement sensor for electrically detecting the displacement of the vehicle height. In a suspension control device having a vehicle height adjusting device, when it is detected that the vehicle is traveling by the traveling state determination means for determining whether the vehicle is stopped or traveling, and the output of the traveling state determination means. , The displacement of the vehicle is detected from the output of the displacement sensor to control the damping force of the shock absorber, and the displacement of the vehicle is detected by the output of the traveling state determination means. A suspension control device comprising a control means for adjusting a vehicle height according to an output of a sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60212465A JPH0645289B2 (en) | 1985-09-27 | 1985-09-27 | Suspension controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60212465A JPH0645289B2 (en) | 1985-09-27 | 1985-09-27 | Suspension controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6274705A JPS6274705A (en) | 1987-04-06 |
| JPH0645289B2 true JPH0645289B2 (en) | 1994-06-15 |
Family
ID=16623090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60212465A Expired - Lifetime JPH0645289B2 (en) | 1985-09-27 | 1985-09-27 | Suspension controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645289B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0784123B2 (en) * | 1986-03-24 | 1995-09-13 | 株式会社日本自動車部品総合研究所 | Damping force control device for shock absorber |
| GB2597452B (en) | 2020-07-21 | 2023-05-17 | Jaguar Land Rover Ltd | Vehicle active suspension control system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182506A (en) * | 1981-05-01 | 1982-11-10 | Kayaba Ind Co Ltd | Damping force controller of hydraulic pressure buffer |
| JPS5914365A (en) * | 1982-07-14 | 1984-01-25 | Mitsubishi Electric Corp | Margin angle detector for ac/dc converter |
-
1985
- 1985-09-27 JP JP60212465A patent/JPH0645289B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6274705A (en) | 1987-04-06 |
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