US Patent No. 9,481,473

DISTRIBUTED CONTROL SYSTEM WITH SMART ACTUATORS AND SENSORS


Patent No. 9,481,473
Issue Date November 01, 2016
Title Distributed Control System With Smart Actuators And Sensors
Inventorship Richard J. Skertic, Carmel, IN (US)
Assignee Rolls-Royce North American Technologies, Inc., Indianapolis, IN (US)

Claim of US Patent No. 9,481,473

1. A system for controlling operation of an aircraft engine, comprising:
a master controller including a Full Authority Digital Engine Control (FADEC);
a control node device coupled to a solenoid of the aircraft engine and to the master controller, the solenoid operable based
on a frequency response curve and between a bounded lower curve and a bounded upper curve, wherein the control node device:

tracks performance of the solenoid during operation of the aircraft;
compares the tracked performance with the bounded lower and bounded upper curves;
determines whether the solenoid of the aircraft engine is performing within specification based on the comparison of the tracked
performance against the bounded lower and bounded upper curves; and

if not performing within specification, indicates that the solenoid is out of specification; and
wherein the FADEC controls thrust in response to the indication from the control node device.