Congratulations! The paper, entitled "Tracking of piezoelectric actuators with hysteresis: A nonlinear robust output regulation approach", has been accepted as a cover paper by the authoritative journal, namely International Journal of Robust and Nonlinear Control (IJRNC). Professor Zhiyong Chen and Professor Hai-Tao Zhang are the first author and the corresponding author, respectively.

This work was supported by the National 973 Project under Grant No. 2015CB057304 and the National Natural Science Foundation of China under Grants No. 61322304, 61673189, 51120155001, 51535004.