PROBLEM TO BE SOLVED: To provide a steering assist control system that enhances both fail-safe performance and performance of recognition of one-system abnormality by a user by making good use of actuator units of a plurality of systems.SOLUTION: Through cooperation between assist ECUs 303, 313 and an HCU 54, a steering assist control system 1 actualizes: monitoring means of monitoring actuator units 30, 31 of respective systems; torque control means of, in a case of a one-system abnormality in which one specific system is determined to be abnormal and the remaining system is to be normal out of the actuator units 30, 31, controlling assist torque Ta to be lower as compared with that before the one-system abnormality occurs, in conjunction with the rotation operation of a steering handle, said assist torque Ta being obtained by combining output torque of all the systems; and warning control means of controlling an information presentation device 5 so as to give auditory presentation of a warning sound in a local vehicle 2 as the assist torque Ta is controlled to be lower.SELECTED DRAWING: Figure 1
【課題】複数系統のアクチュエータユニットを利用してフェイルセーフ性を高めることと、ユーザによる一系統異常の認識性を高めることとを両立させる、操舵アシスト制御システムの提供。【解決手段】操舵アシスト制御システム1は、各系統のアクチュエータユニット30,31を監視する監視手段と、アクチュエータユニット30,31のうち、特定一系統には異常が生じ且つ残系統は正常であるとの判定が下された一系統異常時に、それら全系統に関して出力トルクを合成したアシストトルクTaを、操舵ハンドルの回転操作に伴って一系統異常前よりも低く制御するトルク制御手段と、アシストトルクTaが低く制御されるのに伴って、自車両2内に警告音を聴覚提示するように、情報提示装置5を制御する警告制御手段とを、アシストECU303,313及びHCU54の協働により実現する。【選択図】図1
STEERING ASSIST CONTROL SYSTEM AND STEERING ASSIST CONTROL METHOD
操舵アシスト制御システム及び操舵アシスト制御方法
2016-11-24
Patent
Electronic Resource
Japanese
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