Design method of IMC controllers for unstable cascade processes with time delay

被引：0
作者：
Zhang J.-G. [1 ]
Qin N.-N. [1 ]
机构：
[1] Institute of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan
来源：
| 1600年 / Univ. of Electronic Science and Technology of China卷 / 46期
关键词：
2 degree of freedom (DOF) control; Cascade control; Internal model control; Unstable process with time delay;
D O I：
10.3969/j.issn.1001-0548.2017.01.007
中图分类号：
学科分类号：
摘要：
A design method of internal model control (IMC) controllers for unstable cascade processes with time delay is presented. The cascade proposed structure contains two control loops, a secondary loop and a primary loop. In the secondary loop, an analytical design method is derived based on the traditional IMC, it can quickly reject the disturbance in the inner loop. In order to decouple the set-point tracking characteristic from disturbance rejection characteristic, a 2 degree of freedom (DOF) IMC structure is used in the primary loop. Then the set point tracking controller and the disturbance rejection controller can be tuned independently, which overcomes the shortage of a traditional IMC. Both theoretical analysis and simulation results demonstrate that the proposed method can reduce the number of controller effectively,meanwhile provide good performance of set-point tracking and disturbance rejection as well as robustness simultaneously. © 2017, Editorial Board of Journal of the University of Electronic Science and Technology of China. All right reserved.
引用
收藏
页码：38 / 45
页数：7
相关论文
共 15 条
  • [1] Zhang W., Gu D., Wang W., Et al., Quantitative performance design of a modified smith predictor for unstable processes with time delay, Industrial & Engineering Chemistry Research, 43, 1, pp. 56-62, (2004)
  • [2] Saraf V., Zhao F., Bequette B.W., Relay autotuning of cascade-controlled open-loop unstable reactors, Industrial & Engineering Chemistry Research, 42, 20, pp. 4488-4494, (2003)
  • [3] Lee Y., Sunggook O.H., Park S., Enhanced control with a general cascade control structure, Industrial & Engineering Chemistry Research, 41, 11, pp. 2679-2688, (2002)
  • [4] Kaya I., Atherton D.P., Improved cascade control structure for controlling unstable and integrating processes, Decision and Control, 2005 European Control Conference, pp. 7133-7138, (2005)
  • [5] Kaya I., Improving performance using cascade control and a Smith predictor, Isa Transactions, 40, 3, pp. 223-234, (2001)
  • [6] Kaya I., Tan N., Atherton D.P., Improved cascade control structure for enhanced performance, Journal of Process Control, 17, 1, pp. 3-16, (2007)
  • [7] Alfaro V.M., Vilanova R., Arrieta O., Robust tuning of two-degree-of-freedom (2-DoF) PI/PID based cascade control systems, Journal of Process Control, 19, 10, pp. 1658-1670, (2009)
  • [8] Liu T., Zhang W.-D., Gu D.-Y., IMC-based control strategy for open-loop unstable cascade processes, Industrial & Engineering Chemistry Research, 44, 4, pp. 900-909, (2005)
  • [9] Liu T., Zhang W.-D., Gu D.-Y., Analytical design for a class of open-loop unstable cascade (control) systems, Journal of Control and Decision, 19, 8, pp. 872-876, (2004)
  • [10] Kaya I., Atherton D.P., Use of smith predictor in the outer loop for cascaded control of unstable and integrating processes, Industrial & Engineering Chemistry Research, 47, 6, pp. 1981-1987, (2008)
12