Method and apparatus for controlling an electric assist steering

Details Method and apparatus for controlling an electric assist steering Method and apparatus for controlling an electric assist steering

1994-05-20

1996-04-02

Shoop, Jr., William M.

Electricity: motive power systems

Constant motor current, load and/or torque control

318433, 318434, 180 791, 180 79, H02P 700

Patent

active

055044034

ABSTRACT:
A steering assist system (10) providing assist in response to a steering control signal includes a vehicle speed sensor (56) for sensing vehicle speed and for providing a speed signal having a value indicative of the sensed vehicle speed and a torque sensor (44) operatively connected to a vehicle hand wheel (12) for providing a torque signal indicative of applied steering torque. A blending filter (70, 71) is connected to the torque sensor and provides a blended filtered torque signal having a non-linear characteristic at torque frequencies less than a blending frequency and a linear characteristic at torque frequencies greater than the blending frequency. The blending filter establishing the blending frequency at a value functionally related to vehicle speed. Steering assist motor (28) provides steering assist in response to a control signal. The control signal is provided in response to the blended filtered torque signal. The blending filters filtering the torque signal so as to maintain a selectable system bandwidth during system operation.

REFERENCES:
patent: 4756375 (1988-07-01), Ishikura et al.
patent: 4834205 (1989-05-01), Mizuno et al.
patent: 4951207 (1990-08-01), Furukawa et al.
patent: 4956590 (1990-09-01), Phillips
patent: 4989682 (1991-02-01), Takahashi et al.
patent: 4992944 (1991-02-01), Noto et al.
patent: 5053966 (1991-10-01), Takahashi et al.
patent: 5072804 (1991-12-01), Bischof et al.
patent: 5155686 (1992-10-01), Shiraishi et al.
patent: 5379634 (1995-01-01), Kuroda et al.

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