JPH03239856A - Variable characteristic vehicle - Google Patents

Variable characteristic vehicle

Info

Publication number
JPH03239856A
JPH03239856A JP9035590A JP3559090A JPH03239856A JP H03239856 A JPH03239856 A JP H03239856A JP 9035590 A JP9035590 A JP 9035590A JP 3559090 A JP3559090 A JP 3559090A JP H03239856 A JPH03239856 A JP H03239856A
Authority
JP
Japan
Prior art keywords
vehicle
change
driver
amount
driving characteristic
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.)
Granted
Application number
JP9035590A
Other languages
Japanese (ja)
Other versions
JP2855749B2 (en
Inventor
Hiroshi Takahashi
宏 高橋
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP2035590A priority Critical patent/JP2855749B2/en
Publication of JPH03239856A publication Critical patent/JPH03239856A/en
Application granted granted Critical
Publication of JP2855749B2 publication Critical patent/JP2855749B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Control Of Transmission Device (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

PURPOSE:To correct a driving characteristic change which is felt unfavorable by a driver and adaptively change the driving characteristic of a vehicle by providing such a constitution as analyzing the accelerator operation of the driver after the driving characteristic change of the vehicle and judging the suitability of the change. CONSTITUTION:When the driving characteristic of a vehicle is actively changed, the accelerator operation quantity of a driver is sampled by an accelerator operation quantity sampling means (a), frequency analysis of the accelerator quantity is conducted every sampling of a determined number, the resulting spectrum pattern is detected by a spectrum pattern detecting means (b), and its evaluation value is calculated by an evaluation value calculating means (c). The time change quantity of the evaluation value of the spectrum pattern is calculated by a change quantity calculating means (d), and when the change quantity is larger than a determined value, the change of the driving characteristic of the vehicle is judged unsuitable to the driver, and correction is carried out by a correcting means (e) to return the driving characteristic of the vehicle to the original form.

Description

【発明の詳細な説明】 く産業上の利用分野〉 本発明は、車両の駆動特性を最適に変化させることがで
きる可変特性車両に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a variable characteristic vehicle that can optimally change the driving characteristics of the vehicle.

〈従来の技術〉 従来の可変特性車両として、米国特許明細書第4829
434号に示されているように、先行車との車間距離を
計測し、環境状態及び走行状態により定まる基準車間距
離との比較等により、車両の駆動特性(例えば変速特性
)を変化させるようにしたものがある。
<Prior Art> As a conventional variable characteristic vehicle, U.S. Patent No. 4829
As shown in No. 434, the distance between the vehicle in front and the vehicle in front is measured, and the vehicle's driving characteristics (e.g., shifting characteristics) are changed by comparing the distance with the standard distance determined by the environmental conditions and driving conditions. There is something I did.

すなわち、レーザーレーダ等を用いて、先行車との車間
距離を計測する。
That is, the distance between the vehicle and the preceding vehicle is measured using a laser radar or the like.

また、メモリ上に、降雨量(環境状B)と車速(走行状
態)とをパラメータとして、先行車との基準車間距離を
記憶してあるテーブルを有し、降雨センサにより検出さ
れる降雨量、及び、車速センサにより検出される車速に
基づいて、そのテーブルから基準車間距離を検索する。
In addition, the memory has a table in which the reference inter-vehicle distance from the preceding vehicle is stored using the amount of rainfall (environmental condition B) and vehicle speed (driving condition) as parameters, and the amount of rainfall detected by the rain sensor, Then, a reference inter-vehicle distance is searched from the table based on the vehicle speed detected by the vehicle speed sensor.

尚、テーブル上の基準車間距離は降雨量及び車速ごとに
車間距離の平均値を学習しこれに基づいて更新される。
Note that the reference inter-vehicle distance on the table is updated based on the learned average value of the inter-vehicle distance for each amount of rainfall and vehicle speed.

そして、実際の車間距離とテーブル上の基準車間距離と
を比較して、車両の駆動特性を変化させる。具体的には
、自動変速機の変速特性を以下のように調整する。
Then, the actual inter-vehicle distance is compared with the reference inter-vehicle distance on the table, and the driving characteristics of the vehicle are changed. Specifically, the shift characteristics of the automatic transmission are adjusted as follows.

i)実際の車間距離がテーブル上の基準車間距離より大
きければ、自動変速機の変速線(シフト線)を低車速側
にもってゆき、ハイギア使用域を広げる。
i) If the actual inter-vehicle distance is greater than the reference inter-vehicle distance on the table, move the automatic transmission's shift line to the lower vehicle speed side to widen the high gear usage range.

11)実際の車間距離がテーブル上の基準車間距離より
小さければ、自動変速機の変速線(シフト線)を高車速
側にもってゆき、ローギア使用域を広げる。
11) If the actual inter-vehicle distance is smaller than the reference inter-vehicle distance on the table, move the shift line of the automatic transmission to the higher vehicle speed side to expand the range of low gear use.

つまり、降雨量及び車速ごとに設定された基準車間距離
に対して、運転者が好みにより、例えば車間距離をつめ
た場合(車間距離小)は、自動変速機の変速線(シフト
線)を高速側に移動させ、ローギア側(高変速比側)で
走行する領域を広げて、車間距離の調整を容易にする。
In other words, if the driver decreases the standard distance between vehicles based on rainfall and vehicle speed based on his/her preference (small following distance), the shift line of the automatic transmission may be moved to a higher speed. This makes it easier to adjust the inter-vehicle distance by moving the vehicle to the side to expand the area in which the vehicle can travel in low gear (high gear ratio).

また、この車間距離が運転者の好みであるので、その車
間距離を新たな基準車間距離とすべく、テーブルの値は
、車間距離の平均値(移動子均等)によって更新されて
ゆく。
Furthermore, since this inter-vehicle distance is the driver's preference, the values in the table are updated by the average value of the inter-vehicle distances (equal mover) in order to make this inter-vehicle distance the new reference inter-vehicle distance.

〈発明が解決しようとする課題〉 しかしながら、このような従来の可変特性車両にあって
は、駆動特性を変化させたことによる運転者の満足度等
を評価しておらず、駆動特性を必ずしも最適に変化させ
てゆくものとはなっていなかったため、駆動特性を変化
させても、かえって運転者の利益にならない場合が発生
するという問題点があった。
<Problems to be Solved by the Invention> However, in such conventional variable characteristic vehicles, driver satisfaction due to changes in drive characteristics is not evaluated, and the drive characteristics are not necessarily optimized. Therefore, there was a problem in that even if the drive characteristics were changed, there were cases in which it was not in the driver's interest.

また、運転者の満足度等を平均的な車間距離を求めて、
これにより基準車間距離のデータを書換えることによっ
て補償しようとしているが、この方法では、運転者が車
両の変速特性変化に満足して車間距離が変化したのか、
運転者が変化に対して不都合を感じやむなく車間距離が
変化したのかを判別できず、場合によっては運転者に不
利益な方向にデータが更新されてゆく可能性があった。
In addition, we calculated the average inter-vehicle distance to measure driver satisfaction, etc.
This attempts to compensate by rewriting the standard inter-vehicle distance data, but with this method, it is difficult to determine whether the driver is satisfied with the change in the vehicle's shifting characteristics and the inter-vehicle distance has changed.
It is not possible to determine whether the inter-vehicle distance has changed because the driver feels inconvenienced by the change, and in some cases, there is a possibility that the data may be updated in a direction that is disadvantageous to the driver.

本発明は、このような従来の問題点を解決することので
きる可変特性車両を提供することを目的とする。
An object of the present invention is to provide a variable characteristic vehicle that can solve these conventional problems.

く課題を解決するための手段〉 このため、本発明は、車両の駆動特性を任意に変化でき
る車両において、第1図に示すように、下記a〜eの手
段を設ける構成とする。
Means for Solving the Problems> Therefore, in the present invention, a vehicle in which the driving characteristics of the vehicle can be arbitrarily changed is provided with the following means a to e, as shown in FIG.

(a)  車両の駆動特性が能動的に変化せしめられた
後の運転者のアクセル操作量をサンプリングする手段 (b)所定数のサンプリング毎にアクセル操作量ノ周波
数分析を行い、そのスペクトルパターンを検出する手段 (C)  該スペクトルパターンの評価値を算出する手
段 (d)  該評価値の時間的な変化量を算出する手段(
e)  該変化量を所定値と比較して、大きいときに、
能動的に変化させた車両の駆動特性を変化量が小さくな
るように修正する手段 〈作用〉 上記の構成においては、車両の駆動特性を能動的に変化
させた場合に、その変化が運転者にとって適合したもの
か、不適合なものかを、アクセル操作量の周波数分析に
よって判断する。
(a) Means for sampling the driver's accelerator operation amount after the vehicle's drive characteristics are actively changed; (b) Frequency analysis of the accelerator operation amount is performed every predetermined number of samplings, and the spectrum pattern thereof is detected. (C) Means for calculating the evaluation value of the spectrum pattern (d) Means for calculating the amount of change over time of the evaluation value (
e) Compare the amount of change with a predetermined value, and if it is large,
Means for modifying the actively changed driving characteristics of the vehicle so that the amount of change becomes smaller (Operation) In the above configuration, when the driving characteristics of the vehicle are actively changed, the change is not noticeable to the driver. Whether it is suitable or not is determined by frequency analysis of the amount of accelerator operation.

すなわち、運転者のアクセル操作量をサンプリングし、
所定数のサンプリング毎にアクセル操作量の周波数分析
を行って、そのスペクトルパターンを検出し、その評価
値を算出する。
In other words, the amount of accelerator operation by the driver is sampled,
A frequency analysis of the accelerator operation amount is performed every predetermined number of samplings, a spectrum pattern thereof is detected, and an evaluation value thereof is calculated.

そして、スペクトルパターンの評価値の時間的な変化量
を算出し、この変化量が所定値より大きいときは、車両
の駆動特性の変化が運転者に不適合であるとして、車両
の駆動特性を元に戻すように修正するのである。
Then, the amount of change over time in the evaluation value of the spectral pattern is calculated, and if this amount of change is larger than a predetermined value, it is determined that the change in the vehicle's driving characteristics is inappropriate for the driver, and the change is determined based on the vehicle's driving characteristics. I'll fix it to bring it back.

〈実施例〉 以下に本発明の詳細な説明する。<Example> The present invention will be explained in detail below.

第2図は本発明の一実施例を示すシステム図である。FIG. 2 is a system diagram showing one embodiment of the present invention.

コントロールユニットには、cpui、クロック2.R
OM3.RAM4.人出力インターフェース5等を備え
ている。
The control unit includes a cpui, clock 2. R
OM3. RAM4. It is equipped with a human output interface 5, etc.

そして、車両の前部に、レーザーレーダ(送受信機)6
が設けられ、演算部7との共働で、先行車との車間距離
が計測される。
A laser radar (transmitter/receiver) 6 is installed at the front of the vehicle.
is provided, and in cooperation with the calculation unit 7, the distance between the vehicle and the preceding vehicle is measured.

また、降雨センサ8が設けられ、これによりA/D変換
器9を介して降雨量が検出される。
A rainfall sensor 8 is also provided, and the amount of rainfall is detected via an A/D converter 9.

また、トランスミッション10に車速センサ11カ設け
られ、これにより車速(出力軸回転数)が検出される。
Further, the transmission 10 is provided with 11 vehicle speed sensors, which detect the vehicle speed (output shaft rotational speed).

さらに、運転者のアクセル操作量に応した信号を出力す
るアクセルセンサ12と、該アクセルセンサ12からの
信号を周波数分析(フーリエ変換)してスペクトルパタ
ーンを得るDSPユニント13と、該ユニット13によ
る分析結果のスペクトルパターンのモーメントを算出す
る演算器14と、該演算器14により算出されたモーメ
ントの値の経時的な変化を抽出する演算器15と、該演
算器15の演算結果を所定値と比較して所定値以上より
大のときに信号を出力する比較器16とが設けられてい
る。
Further, an accelerator sensor 12 that outputs a signal corresponding to the amount of accelerator operation by the driver, a DSP unit 13 that frequency-analyzes (Fourier transforms) the signal from the accelerator sensor 12 to obtain a spectrum pattern, and an analysis by the unit 13. An arithmetic unit 14 that calculates the moment of the resulting spectral pattern, an arithmetic unit 15 that extracts a change over time in the value of the moment calculated by the arithmetic unit 14, and a comparison of the calculation result of the arithmetic unit 15 with a predetermined value. A comparator 16 is provided which outputs a signal when the value is greater than a predetermined value.

先ず、CPUIによりなされる車両の駆動特性(トラン
スミッション10の変速特性)を変化させる制御につい
て第3図のフローチャートにより説明する。
First, the control for changing the drive characteristics of the vehicle (shift characteristics of the transmission 10) performed by the CPU will be explained with reference to the flowchart of FIG.

ステップl (図にはSlと記しである。以下同様)で
は、レーザーレーダ6からの信号に基づいて先行車との
車間距離dを計測する。
In step 1 (denoted as Sl in the figure; the same applies hereinafter), the inter-vehicle distance d to the preceding vehicle is measured based on the signal from the laser radar 6.

ステップ2では、降雨量Rと車速■とをパラメータとし
て、先行車との基準車間路#d0を記憶しであるRAM
上のテーブルから、降雨センサ8により検出される降雨
量R1及び、車速センサ11により検出される車速■に
基づいて、基準車間距離d。を検索する。
In step 2, the reference inter-vehicle road #d0 with respect to the preceding vehicle is stored in the RAM using the amount of rainfall R and the vehicle speed ■ as parameters.
From the table above, the reference inter-vehicle distance d is determined based on the rainfall amount R1 detected by the rain sensor 8 and the vehicle speed ■ detected by the vehicle speed sensor 11. Search for.

そして、ステップ3で、実際の車間距離dと基準車間距
離d0とを比較する。
Then, in step 3, the actual inter-vehicle distance d and the reference inter-vehicle distance d0 are compared.

d>doの場合は、ステップ4へ進んで、変速線(シフ
ト線)を低車速側にもってゆき、ハイギア使用域を広げ
る。すなわち、シフトアップしやすくする。
If d>do, proceed to step 4 and move the gear shift line to the low vehicle speed side to widen the range of high gear use. In other words, it makes it easier to shift up.

d<doの場合は、ステップ5へ進んで、変速線(シフ
ト線)を高車速側にもってゆき、ローギア使用域を広げ
る。すなわち、シフトアップしにくくする。
If d<do, proceed to step 5 and move the shift line to the high vehicle speed side to widen the low gear use range. In other words, it is made difficult to shift up.

そして、ステップ6で、降雨量R及び車速Vごとに実際
の車間距離dの平均値を学習し、これに基づいて、ステ
ップ7で、テーブル上の基準車間距離d、のデータを更
新する。
Then, in step 6, the average value of the actual inter-vehicle distance d is learned for each rainfall amount R and vehicle speed V, and based on this, in step 7, the data of the reference inter-vehicle distance d on the table is updated.

次に、駆動特性を変化させた場合に、その適合性をみる
制御について説明する。
Next, a description will be given of control to check the suitability when the drive characteristics are changed.

駆動特性の変化後、所定時間、運転者によるアクセルの
動きをアクセルセンサ12で入力し、所定数のサンプリ
ング毎にDSPユニット13にてフーリエ変換を行って
、第5図に示されるようなスペクトルパターンを得る。
After the driving characteristics change, the accelerator movement by the driver is inputted by the accelerator sensor 12 for a predetermined period of time, and the Fourier transform is performed by the DSP unit 13 every predetermined number of samplings, thereby creating a spectrum pattern as shown in FIG. get.

次にそのスペクトルパターンより、演算器14にて、各
周波数毎のパワーの積によるモーメントを算出する(第
5図参照)。すなわち、スペクトルパターンの情報をス
カラー値(方向を持たない大きさのみの値)に変換する
。これが評価値となる。
Next, based on the spectral pattern, the computing unit 14 calculates a moment based on the product of power for each frequency (see FIG. 5). That is, the spectral pattern information is converted into a scalar value (a value that has only a magnitude without direction). This becomes the evaluation value.

次に演算器15にて、評価値の時間的な変化量を算出す
る。具体的には、経時的なスカラー値の変化(−階差分
)を算出し、この−階差分の移動平均を求める。
Next, the computing unit 15 calculates the amount of change in the evaluation value over time. Specifically, the change in scalar value over time (-level difference) is calculated, and the moving average of this -level difference is determined.

次に比較器16にて、評価値の変化量として求めたこの
移動平均値を所定値と比較し、所定値より大きい時、信
号を出力させる。
Next, the comparator 16 compares this moving average value obtained as the amount of change in the evaluation value with a predetermined value, and outputs a signal when it is larger than the predetermined value.

そして、この信号により、変化させた車両の駆動特性(
変速線)を変化前の状態に戻す。
This signal then changes the driving characteristics of the vehicle (
(shift line) back to the state before the change.

以上を第4図にフローチャートとして示しである。The above is shown as a flowchart in FIG.

ステップ11では、車両の駆動特性(変速特性)を変化
させたか否かを判定し、YESの場合に次に進む。
In step 11, it is determined whether or not the drive characteristics (shift characteristics) of the vehicle have been changed, and if YES, the process proceeds to the next step.

ステップ12では、アクセルセンサ12からの信号に基
づいてアクセル操作量をサンプリングする。
In step 12, the accelerator operation amount is sampled based on the signal from the accelerator sensor 12.

尚、0゜5〜1)(z位のサンプル周波数で、所定数n
のサンプリングを行う。
In addition, at a sampling frequency of 0°5 to 1) (z), a predetermined number n
sampling.

ステップ13では、周波数分析(フーリエ変換)を行う
In step 13, frequency analysis (Fourier transform) is performed.

ステップ14では、モーメントを算出する。In step 14, moments are calculated.

ステップ15では、−階差分を算出し、次のステップ1
6では、移動平均を算出する。
In step 15, the -order difference is calculated, and the next step 1
In step 6, a moving average is calculated.

そして、ステップ17で所定時間経過したか否かを判定
し、NOの場合はステップ12〜16を繰り返し実行す
る。
Then, in step 17, it is determined whether a predetermined period of time has elapsed, and if NO, steps 12 to 16 are repeatedly executed.

所定時間経過した場合は、ステップ17からステップ1
8へ進んで、移動平均〉所定値か否かを判定し、YES
の場合は、変化させた車両の駆動特性(変速線)を変化
前の状態に戻すよう修正する。
If the predetermined time has passed, step 17 to step 1
Proceed to step 8, determine whether the moving average is a predetermined value, and select YES.
In this case, modify the changed vehicle drive characteristics (shift line) to return them to the state before the change.

ここで、アクセルセンサ12又はステップ12の部分が
アクセル操作量サンプリング手段に相当し、DSPユニ
ット13又はステップ13の部分がスペクトルパターン
検出手段に相当し、演算器14又はステップ14の部分
が評価値算出手段に相当し、演算器15又はステップ1
5.16の部分が変化量算出手段に相当し、比較器16
又はステップ18.19の部分が修正手段に相当する。
Here, the accelerator sensor 12 or the step 12 corresponds to the accelerator operation amount sampling means, the DSP unit 13 or the step 13 corresponds to the spectral pattern detection means, and the calculator 14 or the step 14 corresponds to the evaluation value calculation means. Corresponds to the means, and the arithmetic unit 15 or step 1
The part 5.16 corresponds to the change amount calculation means, and the comparator 16
Alternatively, steps 18 and 19 correspond to the correction means.

本発明は以下の原理によっている。The present invention is based on the following principle.

すなわち、車両の駆動特性が自動的に変化し、その変化
が運転者にとって不適当なものである場合、運転者は車
両の動きが予測しすらくなり、モーメントの一階差分の
変化の様子をみると、特性変化が良好な場合の第6図(
a)のごとき変化に対して、同図(ロ)のごとくとなっ
て、スペクトルに乱れがみえる。
In other words, if the vehicle's driving characteristics change automatically and the change is inappropriate for the driver, the driver will even be able to predict the movement of the vehicle and will not be able to predict how the first difference in moment will change. Looking at Figure 6 (
In response to changes such as a), disturbances can be seen in the spectrum as shown in (b) of the same figure.

そこで、本発明はこの点に着目し、スペクトルの乱れを
モーメント値化し、その移動平均によって運転・者の車
両特性変化の不適合を検出するものである。
Therefore, the present invention focuses on this point, converts the disturbance in the spectrum into a moment value, and uses the moving average to detect the non-conformity of the change in vehicle characteristics of the driver/person.

スペクトルパターンを使用するのは次の理由による。The reason for using spectral patterns is as follows.

アクセルの動きを観測するには、アクセル開度の平均や
分散などがある。しかし、一定のスカラー値であり、ア
クセルの動きの特徴を充分に表していない。これに対し
、アクセルのスペクトルパターンは運転者の特性を抽出
しやすい情報を持っている。そこで、スペクトルパター
ンを直接比較するのがよいが、情報量が多すぎるため、
パターンのモーメントによって重要な情報が減らないよ
うに、スカラー化している。
To observe the movement of the accelerator, we can use the average and variance of the accelerator opening. However, it is a constant scalar value and does not sufficiently represent the characteristics of the accelerator movement. On the other hand, the spectral pattern of the accelerator has information that makes it easy to extract the driver's characteristics. Therefore, it would be better to directly compare the spectral patterns, but since there is too much information,
It is scalarized so that important information is not lost due to pattern moments.

尚、車両の駆動特性として、スロットルアクチュエータ
を有して、アクセル操作に対するスロットル弁開度の変
化特性を任意に変化させるものにおいても、本発明を適
用可能である。
Note that the present invention is also applicable to a vehicle that has a throttle actuator and arbitrarily changes the change characteristic of the throttle valve opening in response to an accelerator operation.

〈発明の効果〉 以上説明したように本発明によれば、車両の駆動特性変
化後の運転者のアクセル操作を分析して変化の適否を判
断する構成としたため、運転者が好ましいと感じない駆
動特性の変化を修正することができ、車両の駆動特性を
適応的に変化できるという効果が得られる。
<Effects of the Invention> As explained above, according to the present invention, the driver's accelerator operation after a change in vehicle drive characteristics is analyzed to determine whether or not the change is appropriate. Changes in characteristics can be corrected and the driving characteristics of the vehicle can be adaptively changed.

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

第1図は本発明の構成を示す機能ブロック図、第2図は
本発明の一実施例を示すシステム図、第3図及び第4図
は制御内容を示すフローチャート、第5図はスペクトル
パターンの例を示す図、第6図(a)、 (b)は特性
変更が良好な場合と不適当な場合の説明図である。
Fig. 1 is a functional block diagram showing the configuration of the present invention, Fig. 2 is a system diagram showing an embodiment of the invention, Figs. 3 and 4 are flowcharts showing control contents, and Fig. 5 is a spectral pattern diagram. FIGS. 6(a) and 6(b), which illustrate examples, are explanatory diagrams of cases in which the characteristic change is favorable and cases in which it is inappropriate.

Claims (1)

【特許請求の範囲】 車両の駆動特性を任意に変化できる車両において、 車両の駆動特性が能動的に変化せしめられた後の運転者
のアクセル操作量をサンプリングする手段と、 所定数のサンプリング毎にアクセル操作量の周波数分析
を行い、そのスペクトルパターンを検出する手段と、 該スペクトルパターンの評価値を算出する手段と、 該評価値の時間的な変化量を算出する手段と、該変化量
を所定値と比較して、大きいときに、能動的に変化させ
た車両の駆動特性を変化量が小さくなるように修正する
手段と、 を有することを特徴とする可変特性車両。
[Scope of Claims] In a vehicle in which the driving characteristics of the vehicle can be arbitrarily changed, means for sampling the amount of accelerator operation by the driver after the driving characteristics of the vehicle are actively changed, and every predetermined number of samplings. means for performing frequency analysis of an accelerator operation amount and detecting a spectrum pattern thereof; means for calculating an evaluation value of the spectrum pattern; means for calculating an amount of change in the evaluation value over time; and means for determining the amount of change over time. A variable characteristic vehicle comprising: means for modifying the actively changed drive characteristic of the vehicle so that the amount of change becomes smaller when the value is larger than the value.
JP2035590A 1990-02-16 1990-02-16 Variable characteristic vehicle Expired - Fee Related JP2855749B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2035590A JP2855749B2 (en) 1990-02-16 1990-02-16 Variable characteristic vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2035590A JP2855749B2 (en) 1990-02-16 1990-02-16 Variable characteristic vehicle

Publications (2)

Publication Number Publication Date
JPH03239856A true JPH03239856A (en) 1991-10-25
JP2855749B2 JP2855749B2 (en) 1999-02-10

Family

ID=12446004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2035590A Expired - Fee Related JP2855749B2 (en) 1990-02-16 1990-02-16 Variable characteristic vehicle

Country Status (1)

Country Link
JP (1) JP2855749B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07108849A (en) * 1993-10-13 1995-04-25 Hitachi Ltd Vehicular automatic traveling control device
WO2003019046A1 (en) * 2001-08-21 2003-03-06 Siemens Aktiengesellschaft Selector device and selection procedure for a gear speed or a gear ratio in a gearbox on a motor vehicle
JP2009074395A (en) * 2007-09-19 2009-04-09 Honda Motor Co Ltd Drive force control device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910753A (en) * 1982-07-09 1984-01-20 Mazda Motor Corp Engine throttle valve controller
JPH01262229A (en) * 1988-04-11 1989-10-19 Mitsubishi Electric Corp Throttle controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910753A (en) * 1982-07-09 1984-01-20 Mazda Motor Corp Engine throttle valve controller
JPH01262229A (en) * 1988-04-11 1989-10-19 Mitsubishi Electric Corp Throttle controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07108849A (en) * 1993-10-13 1995-04-25 Hitachi Ltd Vehicular automatic traveling control device
WO2003019046A1 (en) * 2001-08-21 2003-03-06 Siemens Aktiengesellschaft Selector device and selection procedure for a gear speed or a gear ratio in a gearbox on a motor vehicle
JP2009074395A (en) * 2007-09-19 2009-04-09 Honda Motor Co Ltd Drive force control device

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