Neural Learning Control of Strict-Feedback Systems Using Disturbance Observer

Autor: Yingxin Shou, Jun Luo, Bin Xu, Huayan Pu, Zhongke Shi
Rok vydání: 2019
Předmět:
Zdroj: IEEE Transactions on Neural Networks and Learning Systems. 30:1296-1307
ISSN: 2162-2388
2162-237X
DOI: 10.1109/tnnls.2018.2862907
Popis: This paper studies the compound learning control of disturbed uncertain strict-feedback systems. The design is using the dynamic surface control equipped with a novel learning scheme. This paper integrates the recently developed online recorded data-based neural learning with the nonlinear disturbance observer (DOB) to achieve good "understanding" of the system uncertainty including unknown dynamics and time-varying disturbance. With the proposed method to show how the neural networks and DOB are cooperating with each other, one indicator is constructed and included into the update law. The closed-loop system stability analysis is rigorously presented. Different kinds of disturbances are considered in a third-order system as simulation examples and the results confirm that the proposed method achieves higher tracking accuracy while the compound estimation is much more precise. The design is applied to the flexible hypersonic flight dynamics and a better tracking performance is obtained.
Databáze: OpenAIRE