Controllable control surface-based rocket and attitude self-correction control method thereof

Abstract

The invention relates to a controllable control surface-based rocket and attitude self-correction control method thereof, belongs to the technical field of spaceflight, and aims to solve the problem of instable attitude when a rocket takes off and the problem of spinning of the rocket in the process of operating in air. The rocket includes controllable control surfaces and an electronic control board used for controlling the controllable control surfaces; each controllable control surface is connected with a rocket body through a corresponding steering engine; and the electronic control boardincludes a gyroscope used for measuring the triaxial angular velocity and attitude angle of the rocket, a barometer used for measuring rocket flight height and a processor. The gyroscope and the barometer are utilized to obtain current actual measurement attitude data, Kalman filtering is utilized to filter triaxial angular velocity input to a PID controller; the eventually obtained flight height,triaxial angular velocity and attitude angle are input to the PID controller; the PID controller compares the read actual measurement attitude data with ideal attitude data, and provides a reasonablePID controlled quantity through operation of the processor; and the PID controlled quantity drives a rocker arm of the steering engine to act, thereby achieving the purpose of controlling the attitude of the rocket eventually.

Description

technical field [0001] The invention relates to a rocket and its attitude control, and belongs to the field of aerospace technology. Background technique [0002] The unstable attitude of the rocket during take-off seriously affects the design and development of model rockets. When taking off, the rocket is often disturbed by various factors, including the center of gravity of the rocket deviates from the longitudinal axis of the projectile, unbalanced engine thrust, gravity turning, crosswind, etc. These factors often cause the attitude of the rocket to seriously deviate from the predetermined attitude when it takes off, and fly at a large inclination angle, which eventually causes the rocket's flight altitude to be greatly reduced, and the rocket's landing point is far from the launch point. [0003] In the prior art, the attitude instability problem when the rocket takes off has not been well solved. At present, to solve the problem of unstable attitude of the rocket du...

AI Technical Summary

Problems solved by technology

At present, to solve the problem of unstable attitude of the rocket when it takes off, the method of extending the height of the launch rail is usually adopted, but this method cannot really solve the problem of attitude deviation

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