Absolutely Exponential Stability and Temperature Control for Gas Chromatograph System Under Dwell Time Switching Techniques

作者：Sun, Xi-Ming^*; Wang, Xue-Fang; Tan, Ying; Wang, Xiao-Liang; Wang, Wei

来源：IEEE Transactions on Cybernetics, 2016, 46(6): 1301-1310.

DOI：10.1109/TCYB.2015.2450752

• Absolutely exponential stability
• delay-dependent switching techniques
• temperature control for gas chromatograph

This paper provides a design strategy for temperature control of the gas chromatograph. Usually gas chromatograph is modeled by a simple first order system with a time-delay, and a proportion integration (PI) controller is widely used to regulate the output of the gas chromatograph to the desired temperature. As the characteristics of the gas chromatograph varies at the different temperature range, the single-model based PI controller cannot work well when output temperature varies from one range to another. Moreover, the presence of various disturbance will further deteriorate the performance. In order to improve the accuracy of the temperature control, multiple models are used at the different temperature ranges. With a PI controller designed for each model accordingly, a delay-dependent switching control scheme using the dwell time technique is proposed to ensure the absolute exponential stability of the closed loop. Experiment results demonstrate the effectiveness of the proposed switching technique.

• 出版日期2016-6
• 单位大连理工大学