The Liquid Level Control Based on New Two-Degree-of-Freedom IMC-PID

Abstract:

For the cascade control system of double water tanks liquid level ,the water tanks model is established .The new two-degree-of-freedom IMC-PID regulator is designed by new internal model control(IMC) theory and it is the main controller of the cascade control system . The system performance is directly related to the two adjustable parameters of regulator. By adjusting the two parameters, very good dynamic response performance of both the setting value tracking and anti-interference characteristics can be achieved simultaneously. Simulation results have shown the validity of the proposed control scheme compared with the conventional PID regulator and the old two-degree-of-freedom IMC-PID regulator.

• Periodical: Applied Mechanics and Materials (Volumes 157-158)
• Pages: 456-461
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.157-158.456
• Online since: February 2012
• Authors: Wen Jin Wu, Shan He Jiang, Ju Lang Jiang
• Keywords: Feed-Forward Controller, Internal Model Control (IMC), PID Regulator, Two-Degree-of-Freedom

References

[1] Gang Shen, Dacheng Cong, Junwei Han, 2008, Application of Fuzzy Immune PID Control in Starch Production Line. Transactionsof the Chinese Society for Agricultural Machinery(In Chinese), 39(10) pp.109-112.

[2] Guangming Cao , Di Wu, Dianhua Zhang, 2007, Design of mold liquid level control system in roll caster based on fuzzy control regulation. Control and Decision (In Chinese), 22(4) pp.399-402.

[3] Yanqing Peng , Jian Luo, Jinfa Zhuang, Liqing Chen, 2008, Oil Level in Capsule Forming Machine Model Reference Fuzzy Adaptive PID Control of Paraffin. Journal of Tianjin University (In Chinese), 41(8) pp.931-936.

[4] Qiehao Fang, Lin Xu, Jianhui Wang. 2006, Improved PSO and its application in crystallizer liquid level control system. Chinese Journal of Scientific Instrument(In Chinese), 27(11) pp.1399-1402.

[5] Wenjin Wu, Suoliang Ge, Shanhe Jiang, Qishen Wang, 2009, Liquid Level Control with Particle Swarm Algorithm Optimized PID, Journal of Hefei University of Technology (Natural Science) (In Chinese), 32(11) pp.1674-1677.

DOI: 10.1109/ccdc.2009.5192756

[6] Zhixin Wang, Yundong Gu, Jiayin Wang, 2006, Several level control experiments on double tank system and the modeling of these plants [J]. Journal of Beijing Normal University(Natural Science) (In Chinese), 42(4) pp.126-130.

[7] Shousun Hu, Control Theory (Beijing: Science Press 2001).

[8] S. Skogestad, 2003, Simple analytic rules for model reduction and PID controller tuning . Journal of Process Control, 13(1) pp.291-309.

DOI: 10.1016/s0959-1524(02)00062-8