JP4531908B2 - Method and apparatus for reducing maximum loss output of electric servo steering output stage of vehicle - Google Patents
Method and apparatus for reducing maximum loss output of electric servo steering output stage of vehicle Download PDFInfo
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- JP4531908B2 JP4531908B2 JP2000054373A JP2000054373A JP4531908B2 JP 4531908 B2 JP4531908 B2 JP 4531908B2 JP 2000054373 A JP2000054373 A JP 2000054373A JP 2000054373 A JP2000054373 A JP 2000054373A JP 4531908 B2 JP4531908 B2 JP 4531908B2
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- 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
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
-
- 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
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
-
- 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
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
- B62D5/0496—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures by using a temperature sensor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は，車両の電動サーボステアリング出力段の最大損失出力の低減方法及びその装置に関し，さらに詳細には，車両の電動サーボステアリングの出力段において走行駆動中に発生する最大損失出力（Ｐｍａｘ）の低減方法及び低減装置に関する。
【０００２】
【従来の技術】
従来の電動サーボステアリングにおいては，車両の走行駆動中に，モータの著しい加熱，バッテリ電圧の上昇など環境の影響に起因して，出力段の最大許容損失出力が増大した場合には，サーボモータを駆動する出力段が過熱し，最終的には故障する場合があった。
【０００３】
【発明が解決しようとする課題】
しかし，このように電気的な出力段が故障した場合には，サーボステアリング全体が作動を停止するので，非常駆動に切り換えなければならない。このとき，操舵支援が実行されず，全操舵力がステアリングホィールに伝達されるので，車両走行の快適性が大きく損失なわれ，運転者の操舵に悪影響を与えるなどの問題がある。特に，出力段の過熱の危険性が高い場合には，予め出力段は完全に遮断されるが，この場合には，全体のサーボステアリングが解除されるので，サーボステアリングによる操舵支援が実行されないという問題がある。
【０００４】
したがって，本発明の課題は，電動サーボステアリング出力段の過熱を防止して電動サーボステアリングの安全性及び快適さを高め，同時に快適な操舵支援を実行することが可能な新規かつ改良された出力段の最大損失出力の低減方法及びその装置を提供することにある。
【０００５】
【課題を解決するための手段】
上記課題を解決するため，請求項１に記載の発明においては，車両の電動サーボステアリング出力段において，走行駆動中に発生する最大損失出力を低減する方法であって，前記出力段の温度に影響を与える１又は２以上の車両状況あるいは周囲状況が危険値を超えたか否かを認識する認識工程と，前記認識工程で前記危険値を超えたと判断する場合に，予め設定された１つのアルゴリズム，あるいは，前記車両状況あるいは前記周囲状況に基づいて形成されたパラメータに応じて選択される予め設定された２以上の異なるアルゴリズムに従って，前記出力段の最大損失出力を低減する制御工程と，を有することを特徴とする出力段の最大損失出力の低減方法が提供される。
【０００６】
本項記載の発明では，出力段の過熱の危険性が高い場合に，出力段の損失出力を所望に低減させることができる。即ち，出力段温度あるいは出力段温度に直接的に影響を与える１又は２以上の車両状況あるいは周囲状況について，走行駆動中に危険値を超えたことが認識されると即座に，予め設定された１つのアルゴリズム，あるいは出力段温度又は車両状況あるいは周囲状況をパラメータとして含む複数の異なるアルゴリズムに従って，出力段での最大許容損失出力を最小値に低減させることができる。この結果，出力段は過熱と故障から保護され，同時に車両走行の快適性が最大限保証される。
【０００７】
また，請求項２に記載の発明のように，前記１又は２以上のアルゴリズムは，特性曲線あるいはマップとして格納される如く構成すれば，車両状況あるいは周囲状況により定められるパラメータを介して最大許容損失出力が記載される特性曲線又はマップを介して，アルゴリズムを実行し，出力段の最大許容損失出力を好適に低減することができる。
【０００８】
また，請求項３に記載の発明のように，前記１又は２以上のアルゴリズムは，１又は２以上の数式により表現される如く構成すれば，複数の異なる車両状況と周囲状況を，１又は２以上の数式により車両状況あるいは周囲状況を算出することができる。また，例えば，請求項４に記載の発明のように，前記車両状況及び周囲状況は，バッテリ電圧，車両速度，モータ温度，出力段温度あるいは周囲温度の群から選択される少なくとも一つである如く構成することができる。
【０００９】
また，上記課題を解決するため，請求項５に記載の発明のように，車両の電動サーボステアリング出力段において，走行駆動中に発生する最大損失出力を低減する装置であって，前記電動サーボステアリングの出力段を駆動する開ループ制御／閉ループ制御ユニットが，前記出力段の温度に影響を与える１又は２以上の車両状況あるいは周囲状況が危険値を超えたか否かを認識し，前記危険値を超えたと判断される場合に，予め設定された１つのアルゴリズム，あるいは，前記車両状況あるいは前記周囲状況に基づいて形成されたパラメータに応じて選択される予め設定された複数の異なるアルゴリズムに従って，前記出力段の最大損失出力を低減することを特徴とする出力段の最大損失出力の低減装置が提供される。
【００１０】
本項記載の発明では，出力段の過熱の危険性が高い場合に，出力段の損失出力を所望に低減させることができる。即ち，出力段温度あるいは出力段温度に直接的に影響を与える１又は２以上の車両状況あるいは周囲状況について，走行駆動中に危険値を超えたことが認識されると即座に，予め設定された１つのアルゴリズム，あるいは出力段温度又は車両状況あるいは周囲状況をパラメータとして含む複数の異なるアルゴリズムに従って，出力段での最大許容損失出力を最小値に低減させることができる。この結果，出力段は過熱と故障から保護され，同時に車両走行の快適性が最大限保証される。
【００１１】
また，請求項６に記載の発明のように，前記開ループ制御／閉ループ制御ユニットは，前記出力段から前記電動サーボステアリングの前記サーボモータに供給される電圧を低下させることにより，前記最大許容損失出力を低減する如く構成すれば，例えば電動サーボステアリングの出力段の最大可能損失出力を，走行駆動中に車両状況及び周囲状況に従って電圧ベクトルを介して所望に低下させるので，出力段の過熱が回避され，同時に，最大限快適な操舵支援が保証される。また，請求項７に記載の発明のように，前記開ループ制御／閉ループ制御ユニットは，前記出力段から前記電動サーボステアリングの前記サーボモータに供給される周波数を低下させることにより，前記最大許容損失出力を低減する如く構成しても，周波数を介して電動サーボステアリングの出力段の最大可能損失出力を低減して，同様の効果が得られる。
【００１２】
また，請求項８に記載の発明のように，前記開ループ制御／閉ループ制御ユニットは，車両内のセンサ及び／又は他の制御装置から，前記車両状況及び前記周囲状況に関する信号を受信する如く構成すれば，走行駆動中に車両状況及び周囲状況に従って電圧ベクトルあるいは周波数を介して電動サーボステアリングの出力段の最大可能損失出力を所望に低減させることができる。
【００１３】
また，請求項９に記載の発明のように，前記開ループ制御／閉ループ制御ユニットはメモリを有し，前記メモリには，前記１又は２以上のアルゴリズムが特性曲線あるいはマップ形式で格納される如く構成すれば，メモリからアルゴリズムを読み出して，迅速に対応することができる。
【００１４】
【発明の実施の形態】
以下，本発明の好適な実施の形態について，添付図面を参照しながら詳細に説明する。尚，以下の説明および添付図面において，同一の機能及び構成を有する構成要素については，同一符号を付することにより，重複説明を省略する。
【００１５】
（第１の実施の形態）
以下，図１を参照しながら，第１の実施の形態について説明する。図１は，最大許容損失出力Ｐｍａｘと，出力段温度，モータ温度及びバッテリ電圧との関係を示すグラフ図である。
【００１６】
図１において，特性曲線Ａは，出力段温度と最大許容損失出力Ｐｍａｘとの関係を示す。特性曲線Ｂは，モータ温度と最大許容損失出力Ｐｍａｘとの関係を示す。特性曲線Ｃは，バッテリ電圧と最大許容損失出力Ｐｍａｘとの関係を示す。
【００１７】
図１に示すように，時点Ｔ０において，電動サーボステアリングの出力段異常温度，あるいは，出力段温度と直接的に関連するモータ異常温度又はバッテリ異常電圧が検出されると即座に，出力段の最大許容損失出力Ｐｍａｘは，各特性曲線に従って通常値から最小値まで低減される。この最小値では，最大限の走行快適性が得られる。
【００１８】
この特性曲線Ａ，Ｂ，Ｃはマップを形成し，開ループ制御／閉ループ制御ユニットのメモリ（図示せず）に格納される。
【００１９】
また，開ループ制御／閉ループ制御ユニットは， 車両内に設置されるセンサ及び／又は他の制御装置から信号（例えばバッテリ電圧，車両速度，モータ温度，出力段温度及び／又は周囲温度に関する信号）を受信して，パラメータを算出し，各パラメータに従って制御される出力段の最大可能損失出力Ｐｍａｘの曲線を，数学的に計算することもできる。この場合には，アルゴリズムは，１又は２以上の数式の形式でメモリに格納される。
【００２０】
本実施形態においては，例えば走行駆動中に車両状況及び周囲状況に従って（電圧ベクトル又は周波数を介して），電動サーボステアリングの出力段の最大可能損失出力を所望に低減させる制御が実行される。この結果，出力段の過熱が回避され，同時に，最大限の快適な操舵支援が保証される。
【００２１】
以上，本発明に係る好適な実施の形態について説明したが，本発明はかかる構成に限定されない。当業者であれば，特許請求の範囲に記載された技術思想の範囲内において，各種の修正例および変更例を想定し得るものであり，それらの修正例および変更例についても本発明の技術範囲に包含されるものと了解される。
【００２２】
例えば，上記実施形態においては，特性曲線を具体的に明示して説明したが，ここで示した特性曲線は単なる一例であり，その絶対量あるいはその特性を限定するものではない。
【００２３】
また，上記実施形態においては，上記実施形態においては，複数の特性曲線をマップに格納した構成を例に挙げて説明したが，出力段温度との重要な影響量を表す単一の特性曲線，例えばモータ温度の特性曲線Ｂだけを使用して，出力段の最大許容損失出力Ｐｍａｘを所望に低減することができる。
【００２４】
また，上記実施の形態においては，アルゴリズムを数学的な式として格納する構成を例に挙げて説明したが，複数の異なる車両状況と周囲状況を１つの式又は特性曲線において，組み合わせて考慮することもできる。
【００２５】
また，上記実施形態においては，出力段温度，モータ温度，バッテリ電圧と最大許容損失出力Ｐｍａｘとの関係をマップに格納した構成を例に挙げて説明したが，例えば車両速度などの出力段温度に影響を与える他の車両状況あるいは周囲状況をマップに格納することもできる。
【００２６】
【発明の効果】
本項記載の発明では，出力段の過熱の危険性が高い場合に，出力段の損失出力を所望に低減させることができる。即ち，出力段温度あるいは出力段温度に直接的に影響を与える１又は２以上の車両状況あるいは周囲状況について，走行駆動中に危険値を超えたことが認識されると即座に，予め設定された１つのアルゴリズム，あるいは出力段温度又は車両状況あるいは周囲状況をパラメータとして含む複数の異なるアルゴリズムに従って，出力段での最大許容損失出力を最小値に低減させることができる。この結果，出力段は過熱と故障から保護され，同時に車両走行の快適性が最大限保証される。
【図面の簡単な説明】
【図１】最大許容損失出力Ｐｍａｘと，出力段温度，モータ温度及びバッテリ電圧との関係を示すグラフ図である。
【符号の説明】
Ｐｍａｘ 最大許容損失出力
Ａ，Ｂ，Ｃ 特性曲線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for reducing the maximum loss output of an electric servo steering output stage of a vehicle, and more specifically, the maximum loss output (Pmax) generated during travel driving in the output stage of an electric servo steering of a vehicle. The present invention relates to a reduction method and a reduction device.
[0002]
[Prior art]
In the conventional electric servo steering system, when the maximum allowable loss output of the output stage increases due to environmental effects such as significant motor heating and battery voltage increase during vehicle driving, the servo motor is turned off. The driven output stage overheated and eventually failed.
[0003]
[Problems to be solved by the invention]
However, if the electrical output stage fails in this way, the entire servo steering stops, so it must be switched to emergency driving. At this time, the steering assist is not executed, and the entire steering force is transmitted to the steering wheel. Therefore, there is a problem that the driving comfort is greatly lost and the driver's steering is adversely affected. In particular, when the danger of overheating of the output stage is high, the output stage is completely shut off in advance, but in this case, the entire servo steering is released, so that steering assistance by servo steering is not executed. There's a problem.
[0004]
Therefore, an object of the present invention is to provide a new and improved output stage capable of preventing the overheating of the electric servo steering output stage to increase the safety and comfort of the electric servo steering and at the same time performing a comfortable steering support. It is an object to provide a method and apparatus for reducing the maximum loss output.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is a method for reducing the maximum loss output generated during traveling driving in the electric servo steering output stage of the vehicle, and which affects the temperature of the output stage. A recognition step for recognizing whether or not one or two or more vehicle situations or surrounding situations have exceeded a danger value, and one algorithm set in advance when judging that the danger value has been exceeded in the recognition step, Or a control step of reducing the maximum loss output of the output stage according to two or more preset different algorithms selected according to parameters formed based on the vehicle situation or the ambient situation A method for reducing the maximum loss output of the output stage is provided.
[0006]
In the invention described in this section, the loss output of the output stage can be reduced as desired when the risk of overheating of the output stage is high. In other words, as soon as it is recognized that the dangerous value has been exceeded during driving for one or more vehicle conditions or ambient conditions that directly affect the output stage temperature or the output stage temperature, it is set in advance. The maximum allowable loss output at the output stage can be reduced to a minimum value according to one algorithm or a plurality of different algorithms including the output stage temperature or the vehicle situation or the ambient situation as parameters. As a result, the output stage is protected from overheating and failure, and at the same time the driving comfort is assured to the maximum.
[0007]
Further, if the one or more algorithms are configured to be stored as a characteristic curve or a map as in the invention described in claim 2, the maximum allowable loss is determined via a parameter determined by the vehicle situation or the surrounding situation. Through the characteristic curve or map in which the output is described, the algorithm can be executed to suitably reduce the maximum allowable loss output of the output stage.
[0008]
Further, as in the third aspect of the invention, if the one or more algorithms are configured to be expressed by one or more mathematical expressions, a plurality of different vehicle situations and surrounding situations can be represented by one or two. The vehicle situation or the surrounding situation can be calculated by the above formula. Further, for example, as in the invention described in claim 4, the vehicle situation and the ambient situation are at least one selected from the group of battery voltage, vehicle speed, motor temperature, output stage temperature or ambient temperature. Can be configured.
[0009]
In order to solve the above problem, as in the invention described in claim 5, at the electric servo steering output stage of the vehicle, there is provided a device for reducing the maximum loss output generated during traveling drive, wherein the electric servo steering The open loop control / closed loop control unit that drives the output stage recognizes whether one or more vehicle conditions or ambient conditions affecting the temperature of the output stage have exceeded a dangerous value, and determines the dangerous value. The output according to one preset algorithm or a plurality of preset different algorithms selected according to parameters formed based on the vehicle situation or the surrounding situation, An apparatus for reducing the maximum loss output of an output stage is provided, characterized by reducing the maximum loss output of the stage.
[0010]
In the invention described in this section, the loss output of the output stage can be reduced as desired when the risk of overheating of the output stage is high. In other words, as soon as it is recognized that the dangerous value has been exceeded during driving for one or more vehicle conditions or ambient conditions that directly affect the output stage temperature or the output stage temperature, it is set in advance. The maximum allowable loss output at the output stage can be reduced to a minimum value according to one algorithm or a plurality of different algorithms including the output stage temperature or the vehicle situation or the ambient situation as parameters. As a result, the output stage is protected from overheating and failure, and at the same time the driving comfort is assured to the maximum.
[0011]
According to a sixth aspect of the present invention, the open loop control / closed loop control unit reduces the maximum allowable loss by reducing a voltage supplied from the output stage to the servo motor of the electric servo steering. If configured to reduce the output, for example, the maximum possible loss output of the output stage of the electric servo steering is reduced as desired through the voltage vector according to the vehicle situation and the surrounding situation during driving, thereby avoiding overheating of the output stage. At the same time, the maximum comfortable steering assistance is guaranteed. According to a seventh aspect of the present invention, the open loop control / closed loop control unit reduces the frequency supplied from the output stage to the servo motor of the electric servo steering, thereby reducing the maximum allowable loss. Even if the output is reduced, the same effect can be obtained by reducing the maximum possible loss output of the output stage of the electric servo steering through the frequency.
[0012]
Further, as in the invention described in claim 8, the open loop control / closed loop control unit is configured to receive signals relating to the vehicle situation and the ambient situation from sensors and / or other control devices in the vehicle. By doing so, it is possible to reduce the maximum possible loss output of the output stage of the electric servo steering through the voltage vector or the frequency according to the vehicle situation and the surrounding situation during traveling driving.
[0013]
According to a ninth aspect of the present invention, the open loop control / closed loop control unit has a memory, and the memory stores the one or more algorithms in a characteristic curve or map format. If configured, the algorithm can be read out from the memory and dealt with quickly.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. In the following description and the accompanying drawings, components having the same function and configuration are denoted by the same reference numerals, and redundant description is omitted.
[0015]
(First embodiment)
Hereinafter, a first embodiment will be described with reference to FIG. FIG. 1 is a graph showing the relationship between the maximum allowable loss output Pmax, the output stage temperature, the motor temperature, and the battery voltage.
[0016]
In FIG. 1, a characteristic curve A shows the relationship between the output stage temperature and the maximum allowable loss output Pmax. A characteristic curve B shows the relationship between the motor temperature and the maximum allowable loss output Pmax. A characteristic curve C shows the relationship between the battery voltage and the maximum allowable loss output Pmax.
[0017]
As shown in FIG. 1, when an abnormal output temperature of the electric servo steering or an abnormal motor temperature or battery abnormal voltage directly related to the output temperature is detected at time T0, the maximum output stage is immediately detected. The allowable loss output Pmax is reduced from the normal value to the minimum value according to each characteristic curve. With this minimum value, maximum driving comfort is obtained.
[0018]
The characteristic curves A, B and C form a map and are stored in the memory (not shown) of the open loop control / closed loop control unit.
[0019]
The open loop control / closed loop control unit also receives signals from sensors and / or other control devices installed in the vehicle (eg, signals relating to battery voltage, vehicle speed, motor temperature, output stage temperature and / or ambient temperature). It is also possible to receive and calculate parameters and mathematically calculate a curve of the maximum possible loss output Pmax of the output stage controlled according to each parameter. In this case, the algorithm is stored in the memory in the form of one or more mathematical expressions.
[0020]
In the present embodiment, for example, control is performed to reduce the maximum possible loss output of the output stage of the electric servo steering as desired according to the vehicle situation and the surrounding situation (via a voltage vector or frequency) during driving. As a result, overheating of the output stage is avoided, and at the same time, maximum comfortable steering assistance is guaranteed.
[0021]
The preferred embodiment according to the present invention has been described above, but the present invention is not limited to such a configuration. A person skilled in the art can assume various modifications and changes within the scope of the technical idea described in the claims, and the modifications and changes are also within the technical scope of the present invention. It is understood that it is included in
[0022]
For example, in the above-described embodiment, the characteristic curve has been specifically described, but the characteristic curve shown here is merely an example, and the absolute amount or the characteristic thereof is not limited.
[0023]
In the above embodiment, in the above embodiment, the configuration in which a plurality of characteristic curves are stored in the map has been described as an example. However, a single characteristic curve representing an important influence amount with the output stage temperature, For example, by using only the motor temperature characteristic curve B, the maximum allowable loss output Pmax of the output stage can be reduced as desired.
[0024]
Further, in the above embodiment, the configuration in which the algorithm is stored as a mathematical expression has been described as an example. However, a plurality of different vehicle situations and surrounding situations should be considered in combination in one equation or characteristic curve. You can also.
[0025]
In the above-described embodiment, the configuration in which the relationship among the output stage temperature, the motor temperature, the battery voltage, and the maximum allowable loss output Pmax is stored in the map has been described as an example. Other influential vehicle conditions or ambient conditions can also be stored in the map.
[0026]
【The invention's effect】
In the invention described in this section, the loss output of the output stage can be reduced as desired when the risk of overheating of the output stage is high. In other words, as soon as it is recognized that the dangerous value has been exceeded during driving for one or more vehicle conditions or ambient conditions that directly affect the output stage temperature or the output stage temperature, it is set in advance. The maximum allowable loss output at the output stage can be reduced to a minimum value according to one algorithm or a plurality of different algorithms including the output stage temperature or the vehicle situation or the ambient situation as parameters. As a result, the output stage is protected from overheating and failure, and at the same time the driving comfort is assured to the maximum.
[Brief description of the drawings]
FIG. 1 is a graph showing the relationship between maximum allowable loss output Pmax, output stage temperature, motor temperature, and battery voltage.
[Explanation of symbols]
Pmax Maximum allowable loss output A, B, C Characteristic curve
Claims (8)
前記出力段の温度に影響を与える１又は２以上の車両状況あるいは周囲状況が危険値を超えたか否かを認識する認識工程と，
前記認識工程で前記危険値を超えたと判断する場合に，予め設定された１つのアルゴリズム，あるいは，前記車両状況あるいは前記周囲状況に基づいて形成されたパラメータに応じて選択される予め設定された２以上の異なるアルゴリズムに従って，前記出力段の最大損失出力を低減する制御工程と，
を有し、
前記車両状況あるいは前記周囲状況は，バッテリ電圧，車両速度，出力段温度あるいは周囲温度の群から選択される少なくとも一つであることを特徴とする出力段の最大損失出力の低減方法。A method for reducing the maximum loss output generated during driving at the electric servo steering output stage of a vehicle,
And recognizing step whether one or more vehicle conditions or ambient conditions affecting the temperature of the output stage exceeds the danger value,
When it is determined in the recognition step that the danger value has been exceeded, a preset 2 selected in accordance with one preset algorithm or a parameter formed based on the vehicle situation or the surrounding situation A control process for reducing the maximum loss output of the output stage according to the different algorithms,
Have
The method for reducing the maximum loss output of an output stage, wherein the vehicle situation or the ambient situation is at least one selected from the group of battery voltage, vehicle speed, output stage temperature, or ambient temperature .
前記電動サーボステアリングの出力段を駆動する開ループ制御／閉ループ制御ユニットが，前記出力段の温度に影響を与える１又は２以上の車両状況あるいは周囲状況が危険値を超えたか否かを認識し，前記危険値を超えたと判断される場合に，予め設定された１つのアルゴリズム，あるいは，前記車両状況あるいは前記周囲状況に基づいて形成されたパラメータに応じて選択される予め設定された複数の異なるアルゴリズムに従って，前記出力段の最大損失出力を低減し、
前記車両状況あるいは前記周囲状況は，バッテリ電圧，車両速度，出力段温度あるいは周囲温度の群から選択される少なくとも一つであることを特徴とする出力段の最大損失出力の低減装置。A device that reduces the maximum loss output generated during driving at the electric servo steering output stage of a vehicle,
An open loop control / closed loop control unit that drives the output stage of the electric servo steering recognizes whether one or more vehicle conditions or ambient conditions affecting the temperature of the output stage have exceeded a dangerous value; When it is determined that the risk value has been exceeded, one preset algorithm, or a plurality of different preset algorithms selected according to parameters formed based on the vehicle situation or the surrounding situation To reduce the maximum loss output of the output stage,
The apparatus for reducing the maximum loss output of the output stage, wherein the vehicle situation or the ambient situation is at least one selected from the group of battery voltage, vehicle speed, output stage temperature or ambient temperature .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19908572.2 | 1999-02-27 | ||
| DE1999108572 DE19908572B4 (en) | 1999-02-27 | 1999-02-27 | Method and device for reducing the maximum power loss in the final stage of an electric power steering system in the motor vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000255443A JP2000255443A (en) | 2000-09-19 |
| JP4531908B2 true JP4531908B2 (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000054373A Expired - Fee Related JP4531908B2 (en) | 1999-02-27 | 2000-02-25 | Method and apparatus for reducing maximum loss output of electric servo steering output stage of vehicle |
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| Country | Link |
|---|---|
| JP (1) | JP4531908B2 (en) |
| DE (1) | DE19908572B4 (en) |
| FR (1) | FR2790242B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4046005B2 (en) | 2003-05-12 | 2008-02-13 | 株式会社デンソー | Electric motor drive device and electric power steering device |
| JPWO2009041138A1 (en) * | 2007-09-27 | 2011-01-20 | ダイハツ工業株式会社 | Control method of hybrid vehicle |
| JP5355530B2 (en) * | 2010-10-26 | 2013-11-27 | 三菱電機株式会社 | Electric power steering device |
| DE102014209152A1 (en) | 2014-05-14 | 2015-11-19 | Volkswagen Aktiengesellschaft | Power steering and method for adjusting a power loss generated in an output stage and / or electric motor of an electric power steering |
| DE102017215842A1 (en) | 2017-09-08 | 2019-03-14 | Robert Bosch Gmbh | Method for operating a steering device and steering device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035663A (en) * | 1983-08-08 | 1985-02-23 | Aisin Seiki Co Ltd | Motor power steering system |
| JPH0292781A (en) * | 1988-09-28 | 1990-04-03 | Mitsubishi Electric Corp | Motor-driven power steering device |
| JPH02246871A (en) * | 1989-03-20 | 1990-10-02 | Fuji Heavy Ind Ltd | Motor-driven power steering control device for automobile |
| JPH051656U (en) * | 1991-06-25 | 1993-01-14 | 日本精工株式会社 | Electric power steering device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69009389T2 (en) * | 1989-10-16 | 1995-02-02 | Toyoda Machine Works Ltd | Power steering with an electric motor. |
| DE4142569A1 (en) * | 1991-12-21 | 1993-06-24 | Bosch Gmbh Robert | Automobile servomotor steering circuit - has transistor switch controlled by pulse width modulated signal and parallel relay exhibiting lower losses connected across transistor |
-
1999
- 1999-02-27 DE DE1999108572 patent/DE19908572B4/en not_active Expired - Lifetime
-
2000
- 2000-02-22 FR FR0002161A patent/FR2790242B1/en not_active Expired - Fee Related
- 2000-02-25 JP JP2000054373A patent/JP4531908B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035663A (en) * | 1983-08-08 | 1985-02-23 | Aisin Seiki Co Ltd | Motor power steering system |
| JPH0292781A (en) * | 1988-09-28 | 1990-04-03 | Mitsubishi Electric Corp | Motor-driven power steering device |
| JPH02246871A (en) * | 1989-03-20 | 1990-10-02 | Fuji Heavy Ind Ltd | Motor-driven power steering control device for automobile |
| JPH051656U (en) * | 1991-06-25 | 1993-01-14 | 日本精工株式会社 | Electric power steering device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2790242A1 (en) | 2000-09-01 |
| DE19908572A1 (en) | 2000-08-31 |
| JP2000255443A (en) | 2000-09-19 |
| FR2790242B1 (en) | 2006-06-02 |
| DE19908572B4 (en) | 2008-02-28 |
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