2014•Unpublished venueRequires access

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

Yu Ming Shen

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.

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Key concepts: Control theory (sociology), Limit (mathematics), Describing function, Frequency domain, Limit cycle, Stability (learning theory), Function (biology), Mode (computer interface)