Methods and apparatus for error-tolerant wrap-back ACE monitor

Details Methods and apparatus for error-tolerant wrap-back ACE monitor Methods and apparatus for error-tolerant wrap-back ACE monitor

2007-02-27

2007-02-27

Swiatek, Robert P. (Department: 3643)

Aeronautics and astronautics

Aircraft control

Automatic

C244S175000

Reexamination Certificate

active

10112552

ABSTRACT:
Methods and apparatus are provided for more reliably transferring operational control for various aircraft flight control surfaces from a first sub-system to a second sub-system. The present invention provides an Actuator Control Electronics (ACE) wrap-back module that monitors the output of the normal mode control module and switches control to the direct control module based upon the detection of an error condition. The switching function is controlled by a monitoring system that monitors the output from an integrated heartbeat module that emits a pre-programmed signal. The pre-programmed signal is encoded and sent over a communication bus where it is then decoded and validated by comparing the decoded signal to the expected results. Any irregularity in the heartbeat signal automatically triggers a change of control from the first flight control sub-system to the second flight control sub-system.

REFERENCES:
patent: 4095763 (1978-06-01), Builta
patent: 5493497 (1996-02-01), Buus
patent: 5819188 (1998-10-01), Vos

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