Finite Time Impact Angle Guidance Law Using Nonsingular Terminal Sliding Mode Control

Nonsingular terminal sliding mode guidance for intercepting with desired impact angle in terminal phase is proposed in this paper. In order to satisfy the predefined impact angle and interception into target, a nonsingular terminal sliding variable is introduced using line of sight angle error and line of sight angular rate. In reaching phase in the presence of uncertainties such as target maneuvers, robust nonsingular terminal sliding mode guidance law is designed in order to zeroing the sliding variable in finite reaching time. Then in sliding phase, Due to introducing nonsingular terminal sliding variable, finite time stability of line of sight angle and line of sight angular rate is grantee without singularity in commanded acceleration as control signal. Numerical simulations are presented to illustrate the potential of the proposed guidance law

Keywords:

Guidance Law , Impact Angle , Nonsingular Terminal Sliding Mod , finite time convergence