Section VII
Systems
VII-22-9
Servo Control Failures
The dual channel analog servo control architecture provides fully fail
passive response to failures occurring within the servo control function.
The pilot's flight director commands are computed in one FGC-3000
module and the copilot's flight director commands are computed in the
other module. Using the CPL button on the FGP, the pilot selects which
flight director steering commands are displayed on both PFD’s with two
exceptions. In approach or go-around modes, left flight director
commands are displayed on the left PFD and right flight director
commands are displayed on the right PFD. The autopilot, if engaged,
is always coupled to the selected flight director. The selected flight
director commands are sent to the attitude loops in both computers
where identical computations are performed using redundant sensor
data for command limiting and feedback. The resulting servo
commands in each computer are fed to the analog servo loop where
they are voted before being applied to the servo.
10 Sep 2006
To Next Page
Loading...
