Control network design method and system for tilt angle of servo mechanism of liquid rocket

Abstract

The invention discloses a control network design method and system for a swing angle of a servo mechanism of a liquid rocket. The method comprises the following steps: respectively calculating initial control instructions delta 'psi c and delta' gamma c of a pitching channel, a yawing channel psi and a rolling channel gamma; respectively determining filtering control instructions delta 'psi c (K) and delta' gamma c (K) of the current Kth step of the pitching channel, the yawing channel psi and the rolling channel gamma in a control period; the initial value 0 is assigned to each step of the initial control instructions and the filtering control instructions of the three channels in one control period; designing parameter values; substituting the parameter values, and calculating control signals of the three channels in the current step in a control period; and in a control period, assigning the initial control instructions and the filtering control instructions of the three channels to the next step in sequence in each step to obtain a final servo mechanism swing angle instruction. The system comprises an initial calculation module, a filtering instruction module, an initial assignment module, a parameter design module, a control signal calculation module and an assignment module. The working difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of aircraft control, in particular to a control network design method and system for the swing angle of a liquid rocket servo mechanism. Background technique [0002] When a liquid rocket realizes attitude control through engine swing, it needs to calculate the required servo swing angle command through PID and other control methods. In order to ensure the stability of the rocket, it is necessary to filter and correct the calculated servo swing angle command. [0003] The traditional method adopts PD or PID control method. In order to ensure the stability of the rigid body, shaking, and elasticity of the rocket, the calculated servo swing angle command is filtered and corrected. The commonly used methods include inertial filter design, second-order filter design, high First-order filter design, notch filter design, etc. The design method of the filtering and correction network mentioned above is relatively...

AI Technical Summary

Problems solved by technology

The design method of the filtering and correction network mentioned above is relatively complicated, and requires professionals with profound professional knowledge to design it according to the characteristics of each rocket, and because the characteristics of each rocket are different, a unique analysis and design for each rocket is required , not universal

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