Xiaoniu Li received the B.S. degree in mechanical engineering from Linyi University, Linyi, China, the M.S. degree in instrument science and technology from Nanjing University of Aeronautics and Astronautics, Nanjing, China, and the PhD in Engineering Mechanics from Nanjing University of Aeronautics and Astronautics, in 2009, 2013, and 2018, respectively. Currently, he is a lecturer in the college of aerospace, Nanjing University of Aeronautics and Astronautics. His research interests include dynamic analysis, vibration control and the technology of ultrasonic motors.