1. School of Mathematics and Big Data, Foshan University, Foshan 528000, China, and Department of Electrical Engineering, Yeungnam University, Kyonsan 38541, South Korea.
2. School of Mathematics and Big Data, Foshan University, Foshan 528000, China.
3. Department of Electrical Engineering, Yeungnam University, Kyonsan 38541, South Korea.
4. Key Laboratory of System and Control, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China, and School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China.