Control of Uncertain Nonlinear Mechanical and Aerospace     Systems with Flexible Components
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'Elbert L. Marsh', 'PO_EMAI': None, 'PO_PHON': None}
The main objective of this project is to obtain a controller design             methodology for uncertain, nonlinear, mechanical and aerospace systems          which contain flexible components.  Using a singular perturbation               approach, the first phase of the research considers controllers which           are designed assuming certain components to be rigid, and then                  investigates the effect of flexibility in the previously assumed rigid          components on the controller performance.  In the second phase of the           research, all flexibilities are taken into account in the controller            design; currently known results on the control of uncertain systems are         extended to systems whose uncertainties satisfy less restrictive                structural conditions than the previous conditions.  In both phases,            the design of the controllers and the analysis of their performance are         based on Lyapunov functions.
{'FirstName': 'Martin', 'LastName': 'Corless', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Martin Corless', 'EmailAddress': 'corless@purdue.edu', 'NSF_ID': '000471982', 'StartDate': '08/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
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{'Code': '1445', 'Text': 'DYNAMICS & CONTROL'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8706927.xml'}