Simulation results of automatic restructurable flight control system conceptsThe restructurable flight control system (RFCS) described by Weiss et al. (1986) is reviewed, and several results of an extensive six degrees of freedom nonlinear simulation of several aspects of this system are reported. It is concluded that the nontraditional use of standard control surfaces in a nominal feedback control system to spread control authority among many redundant control elements provides a significant amount of fault tolerance without any use of restructuring techniques. The use of new feedback gains alone following a failure can provide significantly improved recovery as long as the control elements remain within their travel limits and as long as uncertainty about the failure identity is properly handled. The use of the feed-forward trim solution in conjunction with redesigned feedback gains allows recovery to take place even when significant control saturation occurs.
Document ID
19860062684
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Weiss, J. L. (Alphatech, Inc. Burlington, MA, United States)
Looze, D. P. (Alphatech, Inc. Burlington, MA, United States)
Eterno, J. S. (Alphatech, Inc. Burlington, MA, United States)
Ostroff, A. (NASA Langley Research Center Hampton, VA, United States)