A Compound Control Method Based on Adaptive Grey Prediction Control

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (11) : 123-129.

MENG Hong-bo， WANG Chang-ming， ZHANG Ai-jun，BAO Jiandong

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Abstract

Through analysis of the time-delay characteristics of stabilized platform position tracking loop, a compound control method based on adaptive grey prediction control (CAGPC) is proposed to improve the system response and disturbance suppression performance of stabilized platform servo system. Firstly, aiming at the disadvantages of conventional fixed step size of grey prediction and the prediction error forecast model has, an adaptive adjustment module adjusting the prediction step and comprehensive error weight at the same time is proposed, according to the actual control system error and the prediction error, the grey prediction step and the prediction error weights are regulated while to improve the control precision and the adaptability of the system prediction model; Secondly, the feedforward compensation controller which is to improve disturbance suppression performance of stabilized platform servo system and aiming at the external disturbances is introduced. At last, Numerical simulation results and the stable platform experimental verification illustrate that the compound control method based on adaptive grey prediction control can improve the stable platform servo system response and the ability of suppress external disturbances.

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grey prediction control / adaptive adjustment module / compound control / stabilization platform

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MENG Hong-bo， WANG Chang-ming， ZHANG Ai-jun，BAO Jiandong. A Compound Control Method Based on Adaptive Grey Prediction Control[J]. Journal of Vibration and Shock, 2016, 35(11): 123-129

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