Power steering system

Details Power steering system Power steering system

2007-01-09

2007-01-09

Lazo, Thomas E. (Department: 3745)

Power plants

Pressure fluid source and motor

Control by independently operated punch card, tape, digital...

C701S041000, C180S422000

Reexamination Certificate

active

11158331

ABSTRACT:
A steering speed-computing section (81) to differentiate a steering angle of a steering wheel from a steering angle sensor (18) to compute the steering speed signal, a low-pass filter (82) to cut high frequency components in the steering speed signal to output a correction steering speed signal, a switching section (87) to switch the cut-off frequency in the low-pass filter to be higher at the time of determining a high-speed steering condition, and a flow quantity-computing section (85) to compute a target flow quantity supplied to a power steering output section (8) based on the steering angle signal and the correction steering speed signal are provided to control a flow quantity of an operating oil supplied to the power steering output section (8) for the target flow quantity.

REFERENCES:
patent: 4887682 (1989-12-01), Drutchas et al.
patent: 5749431 (1998-05-01), Peterson
patent: 6092618 (2000-07-01), Collier-Hallman
patent: 1 331 157 (2003-07-01), None
patent: 2001-163233 (2001-06-01), None

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