Canard rudder-based missile/rocket three-channel control method and control device

Abstract

The invention discloses a canard rudder-based missile / rocket three-channel control method and a control device. The control method comprises the following steps that flight parameters of a rocket are measured in real time by adopting optical fiber inertial navigation, and the measured values are sent to a rocket-borne computer; according to the received measured value, the rocket-borne computer calculates deflection instruction information of the digital electric steering engine by adopting an on-line identification adaptive control algorithm, a comprehensive resolving algorithm, a real-time decoupling algorithm and a rudder instruction comprehensive algorithm, and sends the deflection instruction information to a steering engine controller; and according to the received deflection instruction information, the steering engine controller controls a canard rudder of the digital electric steering engine to deflect, so that the attitude angle and the angular velocity of the rocket are controlled. According to the control method, attitude control and ballistic control of the pitching and yawing channel and angular velocity control of the rolling channel can be realized, and the rolling angular velocity of the rocket in the flight process is reduced.

Description

technical field [0001] The invention relates to the technical field of projectile / arrow control, in particular to a canard-based projectile / arrow three-channel control method and control device. Background technique [0002] The control surface of the canard layout is located at the front of the bullet / arrow, and the wings are located at the tail of the missile body. It is a commonly used aerodynamic layout method for bullets / arrows. Compared with the normal layout, the canard layout has the following main advantages: in terms of aerodynamic performance, since the deflection direction of the rudder surface is the same as the direction of the attack angle, its lift-to-drag ratio is large and the response is fast; The position and relative distance between the airfoil and the airfoil can effectively adjust the pressure center position of the bullet / arrow, which is convenient for the overall design; the control surface is close to the inertial guidance component and the missile...

AI Technical Summary

Problems solved by technology

[0003] However, the canard layout has the disadvantage of making roll control difficult

In the canard layout, the area and length of the canard are generally smaller than that of the empennage. When the canard is deflected at a certain angle for roll control, the downward airflow drawn from the rear edge of the canard will act on the empennage to produce a The canard controls the rolling moment in the opposite direction, and sometimes the induced rolling moment even exceeds the rolling moment produced by the canard itself, making it difficult for the projectile / arrow to roll control

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