Electric power steering apparatus

Details Electric power steering apparatus Electric power steering apparatus

1996-04-26

1997-02-04

Teska, Kevin J.

Boots, shoes, and leggings

74388PS, 180404, 180443, 180412, 318434, 318696, B62D 504

Patent

active

056005598

ABSTRACT:
The present invention provides an electric power steering apparatus in which it is decided whether or not steering torque is in a predetermined drive inhibition area, and when the term in which the decision result is logically inconsistent with driving instruction for the motor in accordance with the steering torque is shorter than a predetermined period of time, a timer is reset to drive the motor. As a result, the compensation of the inertia of said motor can be controlled even when the steering torque is small. Further, in the electric power steering apparatus, the timer is also reset to drive the motor when the steering torque is in a dead zone and a driving current for the motor is smaller than a predetermined value. As a result, the drive of the motor can be controlled also when a steering wheel is returned to its initial position.

REFERENCES:
patent: 4629952 (1986-12-01), Shimizu
patent: 4688655 (1987-08-01), Shimizu
patent: 4800975 (1989-01-01), Oshita et al.
patent: 4896735 (1990-01-01), Morishita et al.
patent: 4957182 (1990-09-01), Morishita et al.
patent: 5097918 (1992-03-01), Daido et al.
patent: 5194794 (1993-03-01), Shamoto
patent: 5253725 (1993-10-01), Nishimoto
patent: 5355315 (1994-10-01), Daido et al.

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