Disturbance Suppression of Seeker Servo System Based on Fuzzy ESO and Sliding Mode Control

Shengfu Cao, Yuanjin Yu, Sen Wang, Yangyang Shi*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A compound controller based on the fuzzy Extended State Observer(ESO) and sliding mode control (SMC) is designed to address the problem of numerous disturbances in the seeker servo systems. Disturbances such as external disturbance torques and parameters perturbation can be estimated by ESO and then suppressed effectively by SMC. At the same time, considering that the seeker servo system often operates in a time-varying state, a fuzzy control is designed based on the frequency of disturbances to adaptively adjust the ESO parameters. The results of simulation show that compared with the sliding mode control with fixed parameter ESO, the designed fuzzy ESO has a better estimation effect on time-varying disturbances. Besides, the designed compound controller can effectively improve the positioning accuracy and speed stability of the seeker servo system under external multi-source disturbances.

Original languageEnglish
Title of host publicationProceedings of the 43rd Chinese Control Conference, CCC 2024
EditorsJing Na, Jian Sun
PublisherIEEE Computer Society
Pages4091-4096
Number of pages6
ISBN (Electronic)9789887581581
DOIs
Publication statusPublished - 2024
Event43rd Chinese Control Conference, CCC 2024 - Kunming, China
Duration: 28 Jul 202431 Jul 2024

Publication series

NameChinese Control Conference, CCC
ISSN (Print)1934-1768
ISSN (Electronic)2161-2927

Conference

Conference43rd Chinese Control Conference, CCC 2024
Country/TerritoryChina
CityKunming
Period28/07/2431/07/24

Keywords

  • ESO
  • Fuzzy control
  • Seeker servo system
  • Sliding Mode Control

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