1. School of Mathematics and Statistics, Huang Huai University, Zhumadian 463000, China
2. School of Chemical and Pharmaceutical Engineering, Huang Huai University, Zhumadian 463000, China
3. College of Mathematics Science, Hebei Normal University, Shijiazhuang 050024, China
4. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China