Control of a Projectile Smart Fin Using an Inverse Dynamics-Based Fuzzy Logic Controller

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Conference Proceeding

Publication Date


Publication Title

ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference


American Society of Mechanical Engineers



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The objective of this paper is to explore a method for the design of fuzzy logic controller for a smart fin used to control the pitch and yaw attitudes of a subsonic projectile during flight. Piezoelectric actuators are an attractive alternative to hydraulic actuators commonly used in this application due to their simplicity. The proposed cantilever-shaped actuator can be fully enclosed within the hollow fin with one end fixed to the rotation axle of the fin while the other end is pinned at the trailing edge of the fin. The paper includes a dynamic model of the system based on the finite element approach. The model includes external moment due to aerodynamic effects. This paper presents a novel approach for automatically creating fuzzy logic controllers for the fin. This approach uses the inverse dynamics of the smart fin system to determine the ranges of the variables of the controllers. Simulation results show that the proposed controller can successfully drive smart fin under various operating conditions.


Actuators; Control equipment; Control theory; Dynamics; Dynamics (Mechanics); Fuzzy logic; Piezoelectric devices; Projectiles; Aerial; Rockets (Aeronautics) – Control systems; Rockets (Aeronautics) – Fins; Rockets (Ordnance)


Acoustics, Dynamics, and Controls | Aerospace Engineering | Mechanical Engineering | Navigation, Guidance, Control and Dynamics




Conference Held: Las Vegas, Nevada, USA, September 4–7, 2007


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