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Published in:
2011 | OriginalPaper | Chapter
Adaptive Nonlinear Guidance Law Considering Autopilot Dynamics
Authors : Dan Yang, Liang Qiu
Published in: Knowledge Engineering and Management
Publisher: Springer Berlin Heidelberg
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A third-order state equation with consideration of autopilot dynamics is formulated. A nonlinear coordinate transformation is used to change the state equation into the normal form. Adaptive sliding mode control theory is depicted and its stability analyses are proved. Applying this theory on the normal form equation, an adaptive nonlinear guidance law is proposed. The presented law adopts the sliding mode control approach can effectively solve the guidance problem against target maneuver and effects caused by autopilot dynamics. Simulation results show that under the circumstance of target escaping with high acceleration and big autopilot dynamics, the proposed guidance law still has high precision.