Projectile roll angle control method based on reaction flywheel

Abstract

The invention provides a projectile roll angle control method based on a reaction flywheel. The projectile roll angle control method comprises the following steps that step one, a dynamical model witha roll angle as the controlled quantity and the rotation speed of the reaction flywheel as the control quantity is established; step two, an expansion state observer based on the systemic dynamical model established in the step one is established to observe the roll angle, roll angle velocity and disturbance torque; step three, a PD controller based on the roll angle, the roll angle velocity andthe disturbance torque observed in the step two is designed, and is subjected to compensation for the disturbance torque; and step four, the extended state observer established in the step two and thecontroller established in the step three are subjected to certification for stability. According to the projectile roll angle control method, the dynamical model of a projectile roll channel is analyzed, then the corresponding expansion state observer is further designed to observe total disturbance in a flight process of a projectile, thus the compensation for the disturbance is further achieved, and stable control of the projectile roll channel is achieved through design of the controller.

Description

Technical field [0001] The invention relates to the technical field of navigation, in particular to a method for controlling the roll angle of a projectile based on a reaction flywheel. Background technique [0002] During the precise control of the projectile, the stability of the projectile’s rolling channel and the ability to quickly adjust the roll angle are the keys to achieving precise alignment of the projectile and stable flight control. During the flight of the projectile, it will be subjected to various disturbances such as disturbance torque generated by aerodynamic friction, disturbance between motor bearings and so on. The existence of these disturbing moments will reduce the accuracy of the projectile roll angle control. Excessive weight of the projectile will also bring certain difficulties to control. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a method for controlling the roll angle of the projectil...

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Problems solved by technology

Excessive weight of the projectile will also bring certain difficulties to control

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