Research on chattering and limit cycle adjusting for output feedback SMC based on frequency domain analysis

Author

Shen Yu

Author_Institution

Sch. of Comput. & Inf. Sci., Southwest Univ., Chongqing, China

fYear

2014

fDate

May 31 2014-June 2 2014

Firstpage

2465

Lastpage

2469

Abstract

For multiple self-oscillations in sliding mode control (SMC) caused by different initial values of state variables or external disturbance, eliminating undesired limit cycles by rational tuning control system parameters. Firstly, estimating the number and stability of limit cycles by the generalized describing function (DF) approach; then adjusting the open loop phase-frequency characteristic by parameters tuning to eliminate undesired limit cycles; finally, the simulation results show the effectiveness of the chattering adjusting method.

Keywords

feedback; frequency-domain analysis; open loop systems; stability; variable structure systems; chattering adjustment method; different initial values; external disturbance; frequency domain analysis; generalized DF approach; generalized describing function approach; limit cycle adjustment method; limit cycle number estimation; limit cycle stability estimation; multiple self-oscillations; open loop phase-frequency characteristic; output feedback SMC; parameter tuning; rational tuning control system parameters; sliding mode control; state variables; undesired limit cycle elimination; Estimation; Limit-cycles; Output feedback; Sliding mode control; Stability analysis; Tuning; Chattering; Generalized describing function approach; Limit cycle; Sliding mode control;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (2014 CCDC), The 26th Chinese

Conference_Location

Changsha

Print_ISBN

978-1-4799-3707-3

Type

conf

DOI

10.1109/CCDC.2014.6852587

Filename

6852587