Computationally efficient control allocation

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dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.en
dc.contributor.inventorDurham, Wayne C.en
dc.date.accessed2016-08-19en
dc.date.accessioned2016-08-24T17:54:14Zen
dc.date.available2016-08-24T17:54:14Zen
dc.date.filed2000-08-10en
dc.date.issued2001-08-21en
dc.description.abstractA computationally efficient method for calculating near-optimal solutions to the three-objective, linear control allocation problem is disclosed. The control allocation problem is that of distributing the effort of redundant control effectors to achieve some desired set of objectives. The problem is deemed linear if control effectiveness is affine with respect to the individual control effectors. The optimal solution is that which exploits the collective maximum capability of the effectors within their individual physical limits. Computational efficiency is measured by the number of floating-point operations required for solution. The method presented returned optimal solutions in more than 90% of the cases examined; non-optimal solutions returned by the method were typically much less than 1% different from optimal and the errors tended to become smaller than 0.01% as the number of controls was increased. The magnitude of the errors returned by the present method was much smaller than those that resulted from either pseudo inverse or cascaded generalized inverse solutions. The computational complexity of the method presented varied linearly with increasing numbers of controls; the number of required floating point operations increased from 5.5 i, to seven times faster than did the minimum-norm solution (the pseudoinverse), and at about the same rate as did the cascaded generalized inverse solution. The computational requirements of the method presented were much better than that of previously described facet-searching methods which increase in proportion to the square of the number of controls.en
dc.format.mimetypeapplication/pdfen
dc.identifier.applicationnumber9635684en
dc.identifier.patentnumber6278908en
dc.identifier.urihttp://hdl.handle.net/10919/72434en
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/08/789/062/0.pdfen
dc.language.isoen_USen
dc.publisherUnited States Patent and Trademark Officeen
dc.subject.cpcG05B13/02en
dc.subject.cpcG05B2219/39258en
dc.subject.uspc318/567en
dc.subject.uspcother318/568.11en
dc.subject.uspcother318/568.2en
dc.subject.uspcother342/90en
dc.subject.uspcother342/96en
dc.subject.uspcother700/262en
dc.subject.uspcother700/1en
dc.subject.uspcother700/245en
dc.subject.uspcother700/251en
dc.subject.uspcother700/252en
dc.subject.uspcother701/23en
dc.subject.uspcother901/30en
dc.titleComputationally efficient control allocationen
dc.typePatenten
dc.type.dcmitypeTexten
dc.type.patenttypeutilityen

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