Autopilot design of a non-linear missile

• Published in: IEE conference publication pp. 889 - 894
• Main Authors: Tsourdos, A, Blumel, A, White, B
• Format: Conference Proceeding
• Language: English
• Published: London IEE 1998
• Subjects: Aerospace control; Applied sciences; Computer science; control theory; systems; Control system analysis and synthesis methods; Control system synthesis; Control theory. Systems; Exact sciences and technology; Military control systems; Nonlinear control systems; Robotics; Spatial variables control; Velocity, acceleration and rotation control; nonlinear control law; linearisation techniques; lateral accelerations; roll rate; control system synthesis; nonlinear missile; acceleration control; input-output approximate linearisation; nonlinear sixth order system; feedback; missile control; nonlinear control systems; autopilot design; attitude control; tracking performance; relative degree; Guidance; Missile; Control system; System design; Autopilot; Non linear system; Linearization
• ISBN: 085296708X; 9780852967089
• ISSN: 0537-9989
• DOI: 10.1049/cp:19980346

Input-output approximate linearisation of a non-linear sixth order system has been studied. A method for controlling the non-linear system that is i/o linearisable is examined that retains the order and the relative degree of the system in the linearisation process, hence producing a linearised system with no internal or zero dynamics. Desired tracking performance for lateral accelerations and roll rate of the missile is achieved by using a non-linear control law that has been derived by selecting the lateral velocities and roll rate as the linearisation outputs. Simulation results are shown that exercise the final design and show that the linearisation and controller design are satisfactory.