Flight-test results using nonlinear control with the F-8C digital fly-by-wire aircraftThe design and operation of the cooperative advanced digital research experiment (CADRE) to develop nonlinear pitch flight control algorithms is described, and the results of an in-flight evaluation using the F-8C digital fly-by-wire (DFBW) research aircraft are presented. The CADRE controller is described, including the initial filter, linear command prefilter, nonlinear command prefilter, and gain scheduling. The variable-integral control-to-optimize response of the controller is considered, and CADRE parameter combinations are addressed. The remotely-augmented-vehicle interface used in the DFBW aircraft experiment is discussed. The distanct-tracking and close-formation tracking evaluation tasks for the aircraft are described along with evaluation configurations, and the test results are presented and discussed. The latter indicate that a nonlinear adaptive controller is a feasible control system technique for the fighter tracking task.
Document ID
19830060451
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Larson, R. R. (NASA Flight Research Center Edwards, CA, United States)
Smith, R. E. (NASA Flight Research Center Edwards, CA, United States)
Krambeer, K. D. (NASA Flight Research Center Edwards, CA, United States)