This article presents a complete design concerning the guidance and autopilot modules for class of spin-stabilized fin-controlled projectiles. The proposed concept is composed two sections: rapidly spinning aft part contains charge, whereas front part, which roll decoupled from aft, includes all necessary electronic equipment actuator devices needed control. As far as section concerned, skid-to-turn control configuration adopted, employing pairs movable trajectory correction aerodynamic...

This paper presents a systematic methodology for the synthesis of global gain-scheduled controllers nonlinear time-varying systems. A controller this type is used to compute pitch-axis autopilot an air-air missile. The missile model considered benchmark testing in academic and industrial communities. missile's dynamics are linearized at small set operating points which proportional― integral/proportional-type designed, shape frequency response linear plants' dynamics. new computed afterward...

This paper presents a complete nonlinear parameter-dependent mathematical model, as well procedure for computing the quasi-linear parameter-varying (q-LPV) model of class spin-stabilized canard-controlled guided projectiles. The proposed projectile concept possesses so-called dual-spin configuration: forward section contains necessary control and guidance software hardware, whereas aft roll-decoupled rapidly spinning payload. Wind-axes instead body-axes variables, is case in existing...

Flight dynamics properties of 155 mm spin-stabilize d projectiles are highlighted in this paper. The 6 Degrees Freedom (DoF) simulations performed rolling and non- body frames by using standard flight mechanics equations. Kinematic features (incidence angles, linear rotational velocities , …) as well histories forces moments illustrated. Special attention is devot ed to the calculation explanation aeroballistics incidence polar diagram.

This paper presents a study concerning class of f in-guided spin-stabilized 155 mm ammunitions with CCF (Course Correction Fuzes). The 7 Degrees Freedom (DoF) non linear equations are written in non-rolling body frame. Aerodynamics coefficients being determined by wind tunnel tests and CFD simulations. reports results equilibrium manifold computation, accelerations, LPV modeling stability analysis.

In this paper, a linear parameter varying (LPV) modeling and control design approach is applied to new class of guided projectiles, aiming exploit the advantages LPV framework in terms guaranteed stability performance. The investigated concept consists planar symmetric 155 mm fin-stabilized projectile equipped with reduced amount actuators characterized by predominantly unstable behavior across analyzed flight envelope. A dedicated procedure allows reformulating nonlinear dynamics as...

This paper presents a study on trajectory correction autopilot con guration for class of n-guided spin-stabilized ammunitions. The proposed algorithm is heavily based the system’s linear parameter-varying model valid inside its entire ight envelope. o ers an accurate approximation airframe nonlinear dynamics and also used stability analysis. A decentralized optimal quadratic integral servo controller strategy that tracking disturbance rejection both longitudinal/lateral projectile dynamics....

This article presents an experimental setup for parameter identification and control algorithm design a guided projectile placed inside wind tunnel. A detailed description of the hardware contained in such as actuators, sensors embedded computer is given. The associated software environment, namely custom realtime Linux distribution, application framework interface to MATLAB/Simulink, also analyzed. Finally, results concerning pitch axis dynamics using proposed are presented.

This article presents a historical review of the most well-known academic or industrial developments in field smart munition since last forty years, focusing mostly on large caliber artillery systems. The accent is put both physical means modifying controlling system trajectory as well underlying Guidance & Control (G C) algorithms. focus then turned to some key past, current and future at French-German Research Institute Saint-Louis (ISL) this field. It highlighted that synergy between...

This article addresses the design of a robust feedback controller for roll dynamics dual-spin guided projectile equipped with low performance actuators. Exploiting characteristics realistic flight scenarios and corresponding parameter variations, simple yet efficient gain-scheduling strategy tailored this application is devised. Controller synthesis based on control techniques, takes into account potential hardware limitations to safeguard against loss upon digital implementation. Robust...

This paper details the identification of a pitch-axis model for an 80-mm fin-stabilized canard-guided projectile through hardware-in-the-loop experimental setup. setup is based on autonomous functional prototype installed in subsonic wind tunnel by means three-degree-of-freedom gimbal mount. A nonlinear dynamical first derived from flight mechanics principles; then, linearized obtained Taylor series expansion. The priori and posteriori identifiability proposed linear are assessed, associated...

This paper addresses the design of a two-dimensional guidance scheme in vertical plane, using robust and gain-scheduling control methods, for fin-stabilized canard-guided projectile. Given that conventional proportional navigation (PNG) is not completely adequate target interception with control-authority-limited weapon, proposed law offered as an improvement compared PNG while respecting similar parallel principle. The projectile-target engagement kinematics full nonlinear model discussed,...

This paper details the design of a pitch axis autopilot for an 80 mm fin-stabilized, canard-guided projectile and its validation on hardware-in-the-loop test setup. setup is built around autonomous prototype, which installed in section wind tunnel by means 3-degrees-of-freedom gimbaled structure. The based family linearized dynamic models projectile, whose parameters were estimated from experimental data. Several control approaches are considered. Using robust framework, full-order...

This article details the design of a Bank-to-Turn autopilot for class 155mm spinstabilized ammunition which incorporates nose-positioned course correction fuse used trajectory and range extension. The considered concept aft section contains explosive charge is rapidly spinning in order to provide system with augmented internal stability, whereas forward artificially decoupled from by means coaxial servomotor all necessary guidance control hardware algorithms. A single pair movable rotating...

This article details the design of a pitch axis autopilot for an 80mm fin-stabilized, canard-guided projectile and its validation on Hardware-In-the-Loop test setup.This setup is built around autonomous prototype, which installed in section wind tunnel by means 3-DoF gimbaled structure.The based family linearized dynamic models projectile, whose parameters were estimated from experimental data.Several control approaches are considered.Using H ∞ robust framework, full-order disturbance...

This article presents a detailed study concerning the equilibrium analysis and linear parameter-varying (LPV) modeling of six degrees-of-freedom (6DoF) nonlinear model fin-guided, gun-launched projectile. The manifold system is obtained through minimal vector parameters characterizing its flight envelope maneuverability involving attainable vertical acceleration presented. In following, an analytic parameter varying airframe yaw/pitch axes derived several issues scope internal structure are...