Abstract

Despite significant technical advances, pilot-induced oscillation (PIO) continues to occur in both flight tests and operational aircrafts. Such a phenomenon has led to significant research activities that aim to alleviate this problem. In this paper, theL1adaptive controller has been introduced to suppress the PIO, which is caused by rate limiting and pure time delay. Due to its architecture, theL1adaptive controller will achieve a desired response with fast adaptation. The analysis of PIO and its suppression byL1adaptive controller are presented in detail in the paper. The simulation results indicate that theL1adaptive control is efficient in solving this kind of problem.

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