[1] Niu Dan, Chen Xisong, Yang JunZhou Xingpeng,. Composite control for coagulation processwith time delay and disturbances [J]. Journal of Southeast University (English Edition), 2016, 32 (3): 285-292. [doi:10.3969/j.issn.1003-7985.2016.03.005]
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Composite control for coagulation processwith time delay and disturbances(
)
一种应用于带时延和干扰的混凝过程的复合控制
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 32
- Issue:
- 2016 3
- Page:
- 285-292
- Research Field:
- Automation
- Publishing date:
- 2016-09-20
Info
- Title:
- Composite control for coagulation processwith time delay and disturbances
- 一种应用于带时延和干扰的混凝过程的复合控制
- Author(s):
- Niu Dan, Chen Xisong, Yang JunZhou Xingpeng
- School of Automation, Southeast University, Nanjing 210096, China
Key Laboratory of Measurement and Control of Complex System Engineering of Ministry of Education, Southeast University, Nanjing 210096, China
- PACS:
- TP273
- DOI:
- 10.3969/j.issn.1003-7985.2016.03.005
- Abstract:
- A composite control scheme consisting of model predictive control(MPC)and disturbance observer(DOB)is proposed to solve the control performance degradation problem of the turbidity of the treated water in the presence of significant changes in raw water quality, water flow rate and internal model mismatch disturbances. The MPC is employed as a feedback controller for the coagulation process with a large time delay. The DOB is adopted to estimate the severe disturbances in the turbidity control, such as large changes in raw water quality and water flow rate. The estimated values are applied for feed-forward compensation to reject disturbances. Finally, the disturbance rejection performances for step disturbances and time-varying disturbances in the nominal case and model mismatch case are tested. The simulation results illustrate that, compared with the MPC method, the proposed method can significantly improve the disturbance rejection performance in the turbidity control of the treated water, no matter if in the presence of external disturbances or internal model mismatch disturbances.
- 为了解决源水水质变化、流量变化等外部干扰以及模型不匹配等内部干扰造成滤后水浊度控制性能变差的问题, 提出一种基于模型预测控制和扰动观测器的复合控制方法.采用模型预测控制方法对带有大时延的混凝投加过程进行反馈控制, 再结合扰动观测器对浊度控制中的源水水质变化、流量变化等扰动进行估计, 将估计出的扰动用于前馈补偿来抑制扰动.最后用所提控制方法在标称情况和模型不匹配情况下对阶跃扰动和时变扰动的抗扰动性能进行测试.仿真结果表明, 相比较单一的模型预测控制方法, 所提复合控制方法能够显著提高滤后水浊度控制中对于外部扰动以及内部模型不匹配扰动的抑制能力.
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Memo
- Memo:
-
Biographies: Niu Dan(1986—), male, doctor; Chen Xisong(corresponding author), male, doctor, professor, chenxisong@263.net.
Foundation items: The National Natural Science Foundation of China(No.61504027), the Natural Science Foundation of Jiangsu Province(No.BK20140647), the Priority Academic Program Development of Jiangsu Higher Education Institutions.
Citation: Niu Dan, Chen Xisong, Yang Jun, et al. Composite control for coagulation process with time delay and disturbances[J].Journal of Southeast University(English Edition), 2016, 32(3):285-292.DOI:10.3969/j.issn.1003-7985.2016.03.005.