Abstract
Abstract : The objective of the project was to develop and analyze methods for control in the presence of actuator saturation. Algorithms were investigated for control allocation, that is, for the problem of distributing control requirements among redundant actuators. A new implementation of the direct allocation method of Durham was proposed. The direct allocation method was chosen because it utilized all of the attainable moment set. A special representation of the moment set in spherical coordinates was considered to speed-up the real- time computations and two rapid search methods were developed and successfully implemented. The direct allocation method was also extended to systems that had previously been excluded, namely those for which subsets of three actuator commands produce linearly dependent moments. Testing of the algorithms was performed using simulation models of a military transport aircraft and of a tailless aircraft.
Published Version
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