Back to results
US 5,194,789 AGranted
Automatic mirror repositioning system diagnostics
AssigneeUnited Technologies Automotive, Inc.
InventorJohn A. Barrs
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeUnited Technologies Automotive, Inc.
InventorJohn A. Barrs
Estimating the term…
A memory mirror system having a mirror 19, two constant speed motors 16,18 each controlling an axis of mirror movement, position feedback signals 26,28 from each motor, switch inputs 12, a diagnostic push button 40, and an electronic controller 10, is provided with a diagnostic procedure after a self-test push button 40 has been depressed by automatically driving the mirror to the center of movement when manual movement is not requested, thereby allowing system level failures, such as position feedback sensor failures, to be detected quickly by visual inspection of mirror movement as the mirror attemps to return to the origin, without altering existing memory settings or disconnecting the controller 10 from the system. When manual movement is not requested for a predetermined period of time, the diagnostic procedure is prevented from running.
A diagnostic system for an automatic mirror repositioning system, comprising:
A method of diagnosing a failure in an automatic mirror repositioning system having a predetermined target position, comprising the steps of:
Dependencies are inferred from the claim text.