Power steering control device for monitoring reference voltage

Details Power steering control device for monitoring reference voltage Power steering control device for monitoring reference voltage

2007-04-10

2007-04-10

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Limitation of motor load, current, torque or force

C318S432000

Reexamination Certificate

active

11126303

ABSTRACT:
A power steering control device includes a torque sensor that detects a steering torque and outputs a torque signal having a torque neutral voltage is determined based on a predetermined reference voltage, a reference-voltage generator unit that generates the reference voltage, an A/D converter unit that A/D converts the torque signal and the reference voltage, a calculator unit that calculates a steering assist torque based on the A/D converted torque signal, a current controller unit that supplies a driving current in accordance with the assist torque to a steering assist motor, a reference-voltage generator unit that generates the reference voltage and outputs the reference voltage to the A/D converter unit and a fault diagnosis unit that monitors the A/D converted reference voltage and performs a predetermined fault diagnosis process.

REFERENCES:
patent: 4660671 (1987-04-01), Behr et al.
patent: 5259473 (1993-11-01), Nishimoto
patent: 5663713 (1997-09-01), Ironside et al.
patent: 6397969 (2002-06-01), Kasai et al.
patent: 0 638 470 (1992-09-01), None
patent: 0 701 207 (1996-03-01), None
patent: 2001-88728 (2001-04-01), None

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