JPS63139177U

JPS63139177U -

Info

Publication number: JPS63139177U
Application number: JP3293687U
Authority: JP
Priority date: 1987-03-06
Filing date: 1987-03-06
Publication date: 1988-09-13

Description

[Brief explanation of the drawing]

第１図はこの考案の電動パワーステアリング装
置の基本構成を示すブロツク図、第２図はこの考
案の実施例の全体構成図、第３図は上記実施例の
電気回路図、第４図はマイクロコンピユータにお
いて実行される処理の手順を示すフローチヤート
、第５図は操舵トルクとモータ駆動電流と実操舵
アシストトルクとの関係を示す図である。１…ステアリングシヤフト、５…ステアリング
ホイール、７…ピニオンシヤフト、８…ステアリ
ングギヤボツクス、９…ラツク軸、１０…減速ギ
ヤ機構、１４…モータ、１８…操舵トルクセンサ
、２０…車速センサ、２１…制御装置、２２…制
御回路、２５…マイクロコンピユータ、２７…入
力回路、２８…出力回路、２９…演算処理装置、
３０…記憶装置、３１…モータ駆動回路。 Figure 1 is a block diagram showing the basic configuration of the electric power steering device of this invention, Figure 2 is an overall configuration diagram of an embodiment of this invention, Figure 3 is an electric circuit diagram of the above embodiment, and Figure 4 is a microcontroller. FIG. 5 is a flowchart showing the procedure of processing executed by the computer, and is a diagram showing the relationship between steering torque, motor drive current, and actual steering assist torque. DESCRIPTION OF SYMBOLS 1... Steering shaft, 5... Steering wheel, 7... Pinion shaft, 8... Steering gear box, 9... Rack shaft, 10... Reduction gear mechanism, 14... Motor, 18... Steering torque sensor, 20... Vehicle speed sensor, 21... Control device, 22... control circuit, 25... microcomputer, 27... input circuit, 28... output circuit, 29... arithmetic processing unit,
30...Storage device, 31...Motor drive circuit.

Claims

[Scope of utility model registration request]

a motor capable of applying a steering assist torque to a steering system; a steering torque detection means for detecting the steering torque of the steering system; and a reference steering assist torque value calculated based on the steering torque value detected by the steering torque detection means. a reference steering assist torque calculating means; a first reference steering assist torque value calculated by the reference steering assist torque calculating means;
a reference steering assist torque differential value calculating means for calculating a differential value according to a predetermined reading time;
a first correction value calculation means for calculating a correction value; a second correction value calculation means that is longer than the first predetermined reading time of the steering torque value detected by the steering torque detection means;
a steering torque differential value calculating means for calculating a differential value according to a predetermined reading time; and a second correction value calculating means for calculating a second correction value based on the steering torque differential value calculated by the steering torque differential value calculating means. means; a reference steering assist torque value calculated by the reference steering assist torque calculating means; and the first
actual steering assist torque calculation means for calculating an actual steering assist torque value by adding the first correction value calculated by the correction value calculation means and the second correction value calculated by the second correction value calculation means; An electric power steering device comprising: a drive means for converting the actual steering assist torque value calculated by the actual steering assist torque calculating means into a drive current value and outputting the same to the motor.