Filtering Algorithm for Micro-electro-mechanical Gyroscope of Rocket with Lateral Thrust Control

LU Xiao-dong;ZHOU Jun;HE Yuan-jun;ZHAO Bin

Acta Armamentarii ›› 2011, Vol. 32 ›› Issue (12) : 1456-1461. DOI: 10.3969/j.issn.1000-1093.2011.12.005
Paper

Filtering Algorithm for Micro-electro-mechanical Gyroscope of Rocket with Lateral Thrust Control

  • LU Xiao-dong1, ZHOU Jun1, HE Yuan-jun2, ZHAO Bin1
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Abstract

The attitude of rocket oscillates in high frequency when it is controlled by lateral thrust, and its micro-electro-mechanical systems(MEMS)gyroscope will be affected. Most of current filtering algorithms assume that the roket attitude changes slowly in a short interval, and it will generate unacceptable modeling error. With aerodynamic analysis, it can be seen that the attitude oscillation is a natural frequency damping oscillation and the natural frequency and damp ratio can be estimated in advance. Thus, a novel filtering algorithm is proposed, which applies the interacting multiple models (IMM) with swing Markov model to describe the uncertain roket attitude motions. Furthermore, the dynamic adjustment mechanism of state transferring probability matrix with the lateral thrust control command can be introduced. Finally, the numerical simulation indicates that IMM filtering algorithm with swing Markov model can accurately trace the attitude vibration.

Key words

control and navigation technology of aerocraft / micro-electro-mechanical systems gyroscope / swing Markov model / interacting multiple model / dynamic model transferring probability

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LU Xiao-dong, ZHOU Jun, HE Yuan-jun, ZHAO Bin. Filtering Algorithm for Micro-electro-mechanical Gyroscope of Rocket with Lateral Thrust Control. Acta Armamentarii. 2011, 32(12): 1456-1461 https://doi.org/10.3969/j.issn.1000-1093.2011.12.005

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