A Disturbance Observer-based Inhibition Method for Disturbance Rejection Rate of Seeker

doi:10.3969/j.issn.1000-1093.2014.11.009

Abstract

Abstract: The disturbance rejection rate (DRR) of seeker has the effect on the output accuracy of seeker and the guidance performance.An online inhibition method based on disturbance observer is proposed for the problems of the guidance precision of missile caused by DRR. The errors of seeker models, the output frequency of detector and the effect of measurement noise on DRR inhibition are presented. The result shows that the spring torque and the damping torque are the main factors of the DRR generation, and the missile guidance precision would be reduced. The online inhibition method based on disturbance observer can inhibit DRR effectively; but the errors of seeker models, the output frequency of the detector and the measurement noise reduce the inhibition effects to some extent.

Key words: ordnance science and technology, disturbance rejection rate, disturbance torque, miss distance, disturbance observer, online inhibition

CLC Number:

TJ765.3

XU Jiao, WANG Jiang, SONG Tao， HU Kuan-rong. A Disturbance Observer-based Inhibition Method for Disturbance Rejection Rate of Seeker[J]. Acta Armamentarii, 2014, 35(11): 1790-1798.

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