| Autor: |
Thomas Brunner, Spilios Theodoulis, Philippe Wernert, Vincent Gassmann |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
AIAA Atmospheric Flight Mechanics (AFM) Conference. |
| DOI: |
10.2514/6.2013-4608 |
| Popis: |
This article details the design of a Bank-to-Turn autopilot for a class of 155mm spinstabilized ammunition which incorporates a nose-positioned course correction fuse used for trajectory correction and range extension. The considered concept aft section contains the explosive charge and is rapidly spinning in order to provide the system with augmented internal stability, whereas the forward section is artificially decoupled from the aft by means of a coaxial servomotor and contains all the necessary guidance and control hardware and algorithms. A single pair of movable rotating canards located in the nose provides with full aerodynamic control which is a challenging task due to the heavy coupling between the pitch/yaw airframe dynamics created by the rapid spinning of the aft part. A thorough treatment of the linear and nonlinear dynamic modeling of the system is given and modern multivariable robust control methods are used in order to design and analyze autopilots of simple structure for the roll and pitch/yaw-channels, taking into account the extended flight envelope, uncertain parameters and limited actuator and sensor bandwidths of the system. Finally, detailed computer-issued trajectory simulations for various scenarios and initial launch conditions are presented in order to demonstrate the effectiveness of the proposed solutions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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