Electrically assisted power steering apparatus

Details Electrically assisted power steering apparatus Electrically assisted power steering apparatus

1997-06-06

1999-11-09

Oberleitner, Robert J.

Motor vehicles

Steering gear

With electric power assist

318433, 318621, B62D 504

Patent

active

059795875

ABSTRACT:
An electronically assisted power steering system (10) for providing assist in response to a steering control signal includes a steering torque sensor (30) operatively connected to a vehicle hand wheel (12) for providing a torque signal indicative of applied steering torque. An electric motor control module (50) is connected to the torque sensor (30) and to an electric motor (32). The electric motor control module (50) includes an outer loop controller for generating a desired torque signal responsive to the applied steering torque. The outer loop controller includes a phase lag network in series with a second order network for compensating the desired torque signal. The electric motor control module (50) also includes an inner loop controller for generating a motor drive signal responsive to the desired torque signal output from the outer loop controller. The inner loop applies a motor drive signal to the electric motor to generate the required assistive torque.

REFERENCES:
patent: 4125799 (1978-11-01), Harduvel
patent: 4645026 (1987-02-01), Adams
patent: 4660671 (1987-04-01), Behr et al.
patent: 4913250 (1990-04-01), Emori et al.
patent: 4940103 (1990-07-01), Momiyama
patent: 5135068 (1992-08-01), Emori et al.
patent: 5307892 (1994-05-01), Phillips
patent: 5467279 (1995-11-01), Wada et al.
patent: 5473231 (1995-12-01), McLaughlin et al.
patent: 5473539 (1995-12-01), Shimizu et al.
patent: 5480000 (1996-01-01), Daido et al.
patent: 5482129 (1996-01-01), Shimizu
patent: 5590732 (1997-01-01), Sugino et al.
"Effects of Adding Poles and Zeros to Transfer Functions", Automatic Control Systems, 7th Ed., B. Kuo, pp. 415-441.

Affiliated with

Also associated with

Rating

Electrically assisted power steering apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrically assisted power steering apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrically assisted power steering apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1444284