Title:
MOTOR-DRIVEN POWER STEERING CONTROL DEVICE
Document Type and Number:
Japanese Patent JPS62175263
Kind Code:
A
Abstract:
PURPOSE:To allow steering force control capable of following the steering speed of a handle thoroughly and with a good feeling by controlling a motor for obtaining an auxiliary steering force based on a conduction ratio in response to the difference between the acceleration/deceleration of the torque detection value and the acceleration of the steering angle. CONSTITUTION:When a handle is operated, a conduction ratio is calculated 101 based on a steering torque detection value detected by a torque sensor 6 and a vehicle speed value from a vehicle speed sensor 113, and a restoring conduction ratio is calculated 104 based on this vehicle speed value and a steering angle value from a steering angle sensor 10. These conduction ratios are selectively sent to a PID control circuit 105 by a restoring force switching circuit 104 via the output of a neutral detecting circuit 102, and an assist/brake switching circuit 106 is controlled by the output of the circuit 105. The circuit 106 is switched and controlled by the output of a deceleration calculating circuit 103, and the calculating circuit 103 judges whether to set to an assist mode or a brake mode based on the difference between the acceleration of the steering angle and the acceleration/deceleration of the torque value.
Inventors:
NOTO YASUO
SUGIURA NOBORU
OUCHI HIDEYUKI
SUGIURA NOBORU
OUCHI HIDEYUKI
Application Number:
JP1858986A
Publication Date:
July 31, 1987
Filing Date:
January 30, 1986
Export Citation:
Assignee:
HITACHI LTD
International Classes:
B62D6/00; B62D5/04; (IPC1-7): B62D5/04; B62D6/00
Domestic Patent References:
| JPS5038228A | 1975-04-09 | |||
| JPS6098867A | 1985-06-01 | |||
| JPS62168758A | 1987-07-25 |
Attorney, Agent or Firm:
Tatsuyuki Unuma