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Time-domain aircraft system identification is applied to flight test data obtained using a motion capture system. Longitudinal aerodynamic force and moment time histories are obtained using the estimation-before-modeling approach, in which forces and moments are modeled as Gauss-Markov processes and estimated concurrently with the aircraft state histories using an extended Kalman filter. Quasi-steady...
This paper presents the design of an adaptive augmentation for cascaded outer-loop path and inner-loop acceleration tracking controllers. The adaptive augmentation is based on a nonlinear design plant and uses model reference adaptive control (MRAC). The outer-loop position controller is a nonlinear model predictive controller (NMPC) with velocity adjustment which incorporates the states and control...
This paper presents the modeling, the design of control laws, for Euler angles and altitude, and their implementation. The proposed controller is based on the backstepping procedure and uses a state feedback linearizing technique to guarantee tracking of the desired Euler angles and altitude on the ornithopter. The provided controller provides exponential convergence to the desired values. Numerical...
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