Projectile roll angle control method based on reaction flywheel
A technology of a reaction flywheel and a control method, applied in the field of navigation, can solve the problems of excessive weight of the projectile body and difficult control, and achieve the effect of a simple and feasible control method.
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[0050] A method for controlling the roll angle of a projectile based on a reaction flywheel, including the following steps:
[0051] Step 1: Select a general-purpose servo motor as the driving motor of the reaction flywheel, and establish a dynamic model with the roll angle as the controlled variable and the speed of the reaction flywheel, that is, the speed of the servo motor as the control variable, as follows:
[0052]
[0053] Where:
[0054] J b ——Moment of inertia of the rolling body;
[0055] θ——rolling angle;
[0056] J w ——The moment of inertia of the reaction flywheel;
[0057] Ω——reaction flywheel angular velocity;
[0058] M d ——Interference torque;
[0059] Assume Available system expressions:
[0060]
[0061] Let x 1 =y, x 3 =f The expression of the expanded state space of the system is as follows:
[0062]
[0063]
[0064] Step 2: Based on the dynamic model of the system established in Step 1, an expanded state observer is established to observe the roll angle, roll angula...
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