In the article titled “Controller Design Based on Echo State Network with Delay Output for Nonlinear System” [1], the Acknowledgements section should be added which is shown as follows.

Acknowledgments

This work was supported by the National Key R&D Program of China (grant no. 2018YFB1500800), the Science and Technology Development Program of Jilin Province (grant no. 20190302079GX), and the Science and Technology Innovation Development Program of Jilin City (grant no. 201830819).