Mechanical and electrical locking coordination security...

Details Mechanical and electrical locking coordination security... Mechanical and electrical locking coordination security...

2011-01-25

2011-01-25

Tran, Dalena (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C180S402000

Reexamination Certificate

active

07877179

ABSTRACT:
A system as described herein relates generally to automotive active front steering control systems having a main processor and a redundant sub-processor. The system provides a way of controlling the electrical and mechanical locking of an actuator motor in a variable gear ratio active front steering system. The method enables the sub-processor to electrically lock the active front steer actuator motor via the main processor to reduce mechanical wear or damage to the variable gear ratio system if the main processor is unable to electrically lock the actuator motor before it mechanically locks the actuator motor. The system also provides an error detecting technique that is robust to false failures and allows the active front steering system to safely transition into a fail safe mode if an error occurs.

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patent: 19908357 (2000-08-01), None
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