Speed control based on ESO for the pitching axis of satellite cameras
type: Item
instance of: scholarly article
title: Speed control based on ESO for the pitching axis of satellite cameras
zbMATH Open document ID: 1400.93205
DOI: 10.1155/2016/2138190
author: BingYou Liu
author: Yi Jin
author: ChangZheng Chen
author: HuiCheng Yang
published in: Mathematical Problems in Engineering
publication date: 2018-10-12T00:00:00Z
review text: Summary: The pitching axis is the main axis of a satellite camera and is used to control the pitch posture of satellite cameras. A control strategy based on extended state observer (ESO) is designed to obtain a fast response speed and highly accurate pitching axis control system and eliminate disturbances during the adjustment of pitch posture. First, a sufficient condition of stabilization for ESO is obtained by analyzing the steady-state error of the system under step input. Parameter tuning and disturbance compensation are performed by ESO. Second, the ESO of speed loop is designed by the speed equation of the pitching axis of satellite cameras. The ESO parameters are obtained by pole assignment. By ESO, the original state variable observes the motor angular speed and the extended state variable observes the load torque. Therefore, the external load disturbances of the control system are estimated in real time. Finally, simulation experiments are performed for the system on the cases of nonload starting, adding external disturbances on the system suddenly, and the load of system changing suddenly. Simulation results show that the control strategy based on ESO has better stability, adaptability, and robustness than the PI control strategy.
Mathematics Subject Classification ID: 93C85
Mathematics Subject Classification ID: 93C10
zbMATH DE Number: 6952889
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2016/2138190
OpenAlex ID: W2333166422
Wikidata QID: Q59131100
cites work: Robust control for nonlinear systems with unknown perturbations using simplified robust right coprime factorisation
cites work: Robust Control for Nonlinear Systems Using Passivity-Based Robust Right Coprime Factorization
cites work: High‐gain observers in nonlinear feedback control
description: scientific article; zbMATH DE number 6952889