The team led by Professor Song Yongduan of the School of Automation of Chongqing University has solved the difficult problems with the non-linear non-minimum phase system output regulation control, in collaboration with the team led by Professor Hassan Khalil from Michigan State University, a globally well-known expert in control. The research findings have been published in IEEE Transactions on Automatic Control, a top international journal in the control area as regular paper recently (with Huang Xiucai, a doctoral candidate of the School of Automation, CQU, as the first author, and Song Yongduan from the School of Automation as the corresponding author).

The cooperating teams have proposed and strictly demonstrated a completely new solution. They used the integral control and high-gain technology to effectively stabilize the system based on state feedback, and at the same time the extended high-gain observer was used to expand the state feedback to the output feedback. Then, they demonstrated the system stability using the singular perturbation theory and Lyapunov theory, and successfully solved this extremely challenging control puzzle. Meanwhile, the research team applied the control theory and algorithm to the actual system of “rotary actuator of translational oscillator” and achieved satisfactory results. The achievement indicates that the School  of Automation has come out in front in the control science and control engineering in the world.

IEEE Transactions on Automatic Control (or IEEE TAC for short) is a journal on theory, design and application of automatic control run by IEEE CCS. The journal accepts papers of two types, namely, regular paper and technical note. Professor Astolfi Alessandro from the Royal Society is now acting as the Editor in Chief of IEEE Transactions on Automatic Control, and other 6 reputable experts in control are acting as the Senior Editors. The Journal receives thousands of papers every year but accepts only a few. Most accepted papers are published as technical notes and only significant breakthroughs will be published as regular papers.