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Acta Armamentarii ›› 2022, Vol. 43 ›› Issue (7): 1510-1518.doi: 10.12382/bgxb.2021.0415

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Active Disturbance Rejection Control of the Roll-isolated System of a Spinning Guided Rocket

SONG Jinchao, ZHAO Liangyu   

  1. (School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China)
  • Online:2022-05-23

Abstract: Under large pitch angles, slope or sine interference disturbances can result in control failures of the roll-isolated system and saturation of the roll gyro. A roll-isolated active disturbance rejection controller (ADRC) is proposed for spinning rockets. Mathematical simulation and theoretical analysis of the PI roll-isolated system are used to reveal the mechanism of saturation of the roll gyro and the control failure. ADRC is designed for the roll-isolated system of the spinning rocket. Based on the numerical simulation results, the improved system is able to effectively handle slope or sine disturbances and ensure the effectiveness of roll isolation. The roll angular velocity can be controlled within a small range of 1°/s. The roll angle can be controlled at about 0°.

Key words: spinningrocket, roll-isolatedsystem, activedisturbancerejectioncontroller, rollgyro

CLC Number: