Abstract
AbstractThis paper presents a new feedback control methodology to design robust Outer-Loop Sliding Mode (OLSM) controllers for systems with nonlinear rapidly time varying and highly uncertain dynamics such as tactical missiles. Within Sliding Mode Control (SMC) framework and based on relative degree and local diffeomorphic coordinate transformation concepts, OLSM controllers that feature short finite time convergence, heavy modeling uncertainties robustness, and chattering extinction and suppression are designed. Two OLSM pitch-axis autopilots for tail-controlled missile are designed and implemented in computer-simulation environment. Simulation results demonstrate the capabilities of OLSM approach in providing high performance levels while maintaining robustness against heavy uncertainties.
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