期刊
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
卷 33, 期 1, 页码 445-450出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TNNLS.2020.3028902
关键词
Synchronization; Artificial neural networks; Estimation; Uncertainty; Learning systems; Compounds; Stability analysis; Compound uncertainty estimation; efficient learning; fractional-order chaotic systems (FOCSs); synchronization control
类别
资金
- National Natural Science Foundation of China [61933010]
- Shaanxi National Science Foundation [2019JZ-08]
- Aeronautical Science Foundation of China [20180753007, 201905053005]
This paper investigates the synchronization control problem for a class of fractional-order chaotic systems with unknown dynamics and disturbance. A new design scheme is proposed to achieve higher synchronization accuracy and better estimation performance. The controller is constructed using neural approximation and disturbance estimation, and the simulation results demonstrate the effectiveness of the proposed approach.
In this brief, the problem of synchronization control is investigated for a class of fractional-order chaotic systems with unknown dynamics and disturbance. The controller is constructed using neural approximation and disturbance estimation where the system uncertainty is modeled by neural network (NN) and the time-varying disturbance is handled using disturbance observer (DOB). To evaluate the estimation performance quantitatively, the serial-parallel estimation model is constructed based on the compound uncertainty estimation derived from NN and DOB. Then, the prediction error is constructed and employed to design the composite fractional-order updating law. The boundedness of the system signals is analyzed. The simulation results show that the proposed new design scheme can achieve higher synchronization accuracy and better estimation performance.
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