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1 Journal of Artificial Intelligence and Soft Computing Research

1 2012

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Neural-sliding mode augmented robust controller for autolanding of fixed wing aircraft

Ismail I., Pashilkar A. A., Ayyagari R., Sundararajan N.

Journal of Artificial Intelligence and Soft Computing Research

2012

Vol. 2, No. 4

317--330

Neural and sliding mode controllers are generally based on the principle of nonlinear dynamic inversion. This leads to control signals containing high frequency components. This can result in actuator rate limiting due to loss of phase at higher frequencies. Large control inputs, for example due to the saturation component of the sliding mode controller can also result in position saturation of the actuator. In this paper we show that by the introduction of suitable phase compensators and an antiwindup scheme the neuralaided sliding mode controller performance can be improved. A novel scheme is proposed for the cascaded feedback controller which addresses practical requirements of both state limiting and control surface saturation respectively.