JPS6436284U

JPS6436284U -

Info

Publication number: JPS6436284U
Application number: JP13234387U
Authority: JP
Priority date: 1987-08-31
Filing date: 1987-08-31
Publication date: 1989-03-06

Description

[Brief explanation of the drawing]

第１〜４図は本考案の一実施例としての車両用
操向アシスト装置を示すもので、第１図はその構
成を模式的に示すブロツク図、第２図ａ，ｂはい
ずれもその動作を説明するフローチヤート、第３
図はそのコントローラ（制御回路）の回路図、第
４図ａ，ｂ，ｃはそれぞれその制御時の転舵角（
操向角）、転舵トルク（操向トルク）、モータア
シストトルク（アクチユエータトルク）の例を示
すタイムチヤートであり、第５図は従来の車両用
操向アシスト装置（復帰アシスト装置）を示す模
式的な構成図である。１……操向ハンドル、１ａ……操向シヤフト、
２……操向角センサ（転舵角センサ）、３……操
向トルクセンサ（転舵トルクセンサ）、４……操
向装置、５……車輪（タイヤ）、６……コントロ
ーラ（制御回路）、７……アクチユエータとして
の電動モータ、８……ラツク、９……車速センサ
、１０，１１……アンプ、１２……ナツクルアー
ム、１３……通常アシスト用制御手段としての電
子パワーステアリング制御ユニツト（ＥＰＳＣ
ｕ）、１４……復帰アシスト用制御手段としての
復帰アシスト用コントローラ、１４ａ……電源回
路、１４ｂ，１４ｃ，１４ｄ，１４ｅ，１４ｆ，
１４ｋ，１４ｎ，１４ｐ，１４ｒ……ＯＰアンプ
、１４ｇ，１４ｈ……アンド回路、１４ｉ……ハ
ンドル中立点調整用回路、１４ｊ……不感帯調整
用回路、１４ｌ……戻し信号レベル調整回路、１
４ｍ……中立信号ヒス調整用回路。 1 to 4 show a steering assist device for a vehicle as an embodiment of the present invention. FIG. 1 is a block diagram schematically showing its configuration, and FIGS. 2a and 2b show its operation. Flowchart explaining the 3rd
The figure is a circuit diagram of the controller (control circuit), and Figure 4 a, b, and c are the steering angles (
This is a time chart showing an example of steering angle), steering torque (steering torque), and motor assist torque (actuator torque). Figure 5 shows a conventional vehicle steering assist device (return assist device). FIG. 1... Steering handle, 1a... Steering shaft,
2... Steering angle sensor (steering angle sensor), 3... Steering torque sensor (steering torque sensor), 4... Steering device, 5... Wheels (tires), 6... Controller (control circuit) ), 7... electric motor as actuator, 8... rack, 9... vehicle speed sensor, 10, 11... amplifier, 12... knuckle arm, 13... electronic power steering control unit (as control means for normal assist) EPS C
u), 14... controller for return assist as control means for return assist, 14a... power supply circuit, 14b, 14c, 14d, 14e, 14f,
14k, 14n, 14p, 14r...OP amplifier, 14g, 14h...AND circuit, 14i...handle neutral point adjustment circuit, 14j...dead zone adjustment circuit, 14l...return signal level adjustment circuit, 1
4m... Neutral signal hysteresis adjustment circuit.

Claims

[Scope of utility model registration request]

A steering torque sensor that detects the steering torque of a vehicle steering handle, a steering angle sensor that detects the steering angle of the steering handle, and detection from the steering torque sensor and the steering angle sensor. The controller includes a controller that receives a signal and outputs an actuator control signal based on the detection signal, and an actuator whose operation is controlled by the control signal from the controller and appropriately assists steering of the wheels by the steering handle. and a normal assist control means for generating a torque in the actuator in accordance with the steering torque, and a normal assist control means for generating a torque in the actuator so as to return the wheel to the neutral position when the steering torque becomes a neutral state. 1. A steering assist device for a vehicle, comprising a return assist control means for generating a return assist.