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Extended nonlinear flight controller design for aircraft

✍ Scribed by Jianliang Wang; N. Sundararajan

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 834 KB
Volume: 32
Category: Article
ISSN: 0005-1098
DOI: 10.1016/0005-1098(96)00066-0

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✦ Synopsis

Ab&acG-In this paper, we consider the problem of control of a high performance aircraft at large angle of attack using a new method of scheduling local nonlinear control laws designed at different equilibrium points. This approach, referred to here as the extendednonlinearjlight control (ENFC), extends the well-known concept of gain scheduling and the methods of extended linearization and pseudo-linearization. First, local nonlinear feedback controls are designed at a number of operating points, using a nonlinear optimal control design method. Then these local nonlinear control laws are scheduled using the proposed ENFC approach. The scheduled nonlinear control law is such that, at any equilibrium operating point, the Taylor-seriesexpansion of the control law matches exactly that of the local nonlinear control law designed for that operating point. Simulation tesults are presented to show the effectiveness of this design methodology.

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