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Pilot/vehicle control optimization using averaged operational mode and subsystem relative performance index sensitivitiesA method is presented for designing optimal feedback controllers for systems having subsystem sensitivity constraints. Such constraints reflect the presence of subsystem performance indices which are in conflict with the performance index of the overall system. The key to the approach is the use of relative performance index sensitivity (a measure of the deviation of a performance index from its optimum value). The weighted sum of subsystem and/or operational mode relative performance index sensitivies is defined as an overall performance index. A method is developed to handle linear systems with quadratic performance indices and either full or partial state feedback. The usefulness of this method is demonstrated by applying it to the design of a stability augmentation system (SAS) for a VTOL aircraft. A desirable VTOL SAS design is one that produces good VTOL transient response both with and without active pilot control. The system designed using this method is shown to effect a satisfactory compromise solution to this problem.
Document ID
19720015545
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Leininger, G. G. (Toledo Univ. Cleveland, OH, United States)
Lehtinen, B. (NASA Lewis Research Center Cleveland, OH, United States)
Riehl, J. P. (NASA Lewis Research Center)
Date Acquired
September 2, 2013
Publication Date
January 1, 1972
Subject Category
Electronics
Report/Patent Number
NASA-TM-X-68041
E-6879
Meeting Information
Meeting: Ann. NASA - Univ. Conf. on Manual Control
Location: Ann Arbor, MI
Country: United States
Start Date: May 17, 1972
End Date: May 19, 1972
Accession Number
72N23195
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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