Design of Improved Disturbance Observer for Stabilized Platform Servo System

Jian Shan Lu; Chang Ming Wang; Ai Jun Zhang; Xiang Fei Meng

doi:10.4028/www.scientific.net/AMM.300-301.1209

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 300-301Design of Improved Disturbance Observer for...

Design of Improved Disturbance Observer for Stabilized Platform Servo System

Abstract:

In order to reduce the influence of frictional interference and measurement noise on stabilized platform tracking performance, disturbance observer (DOB) is applied to platform servo system. In view of the non-ideal performance of classical disturbance observer about suppressing measurement noise, a novel improved DOB which uses an additional control signal to compensate system outputs is proposed based on the structure of classical DOB, and robust stability of the improved DOB when existing model perturbation is analyzed in detail. Simulation results show that the improved DOB can suppress external disturbances and model perturbation well, and the suppression performance of measurement noise is improved, too.

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Periodical:

Applied Mechanics and Materials (Volumes 300-301)

Pages:

1209-1213

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.300-301.1209

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Online since:

February 2013

Authors:

Jian Shan Lu, Chang Ming Wang, Ai Jun Zhang, Xiang Fei Meng

Keywords:

Disturbance Observer, Friction Model, Measurement Noise, Stabilized Platform

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