AWARDEE OF TECHNOLOGICAL SCIENCES PRIZE

CHAI TIANYOU

Chai Tianyou was born in Nov., 1947 in Lanzhou City of Gansu Province and now he is professor of Northeastern University. He was member of Technical Board of International Federation of Automatic Control (IFAC)（1996-1999）and chairman of IFAC Coordinating Committee on Manufacturing and Instrumentation （1996-1999）. Now he is director of State Engineering Technology Research Center for Metallurgical Industry Automation and vice-director of Experts Committee of Advanced Manufacturing and Automation in National High-tech 863 Program.
Professor Chai  has long been committed to the study of fundamental theory and practical application in the field of intelligent decoupling control, adaptive control, integrated automation of process industry. Professor Chai has undertaken and completed more than 30 research projects of National Natural Science Key Foundation, National 863 High-tech Program, National Key Technology Plan, and he has gained many achievements of innovation. He was the first to formulate multi-variable adaptive decoupling control and has proposed multi-variable adaptive decoupling control algorithms， which built analysis of stability and convergence. Combining adaptive decoupling control with intelligent control and distributed computer control system in his research according to the complex industrial processes of power and metallurgy for which conventional control systems can not work automatically, he developed the intelligent decoupling control technology and system. This system has been applied in complex industrial processes successfully to produce remarkable achievements and benefits including coal-pulverizing systems with ball mill of 200 thousand kilowatt power unit made in China and coordinating systems of generator and furnace of imported 300 thousand kilowatt power unit. He presented optimization control method with performance index as production target for complex industrial processes. In order to overcome the difficulties of low grade of gold mine, complexities of mining, dressing, smelting and frequent changes of operating conditions, professor Chai's group developed optimization control techniques in ore dressing production processes and the integrated automation system in gold mine enterprises. The optimization control, operation and management of gold production process has achieved remarkable economic and social benefits. He has published one hundred and sixty papers which were included and quoted by EI and SCI. He was awarded two second-class National Science and Technology Progress Prizes, eight top grade or first-class  of Science and Technology Progress  of the Ministry of Education and Liaoning Province Science and Technology Progress Prizes.