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| Design of Black Liquor Concentration Control System Based on Fuzzy Cascade Control |
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| DOI：10.11981/j.issn.1000-6842.2013.02.34 |
| Key Words:black liquor； fuzzy control； self-tuning； cascade control |
| Fund Project:江苏省制浆造纸科学与技术重点实验室开放基金项目（201010）。 |
| Author Name | Affiliation | | 尤 斌1,3 | 1.南京林业大学江苏省制浆造纸科学与技术重点实验室，江苏南京，210037；3.浙江中控系统工程有限公司，浙江杭州，310053 | | 彭 晗2 | 2.南京林业大学化学工程学院，江苏南京，210037 | | 胡慕伊1,* | 1.南京林业大学江苏省制浆造纸科学与技术重点实验室，江苏南京，210037 | | 熊智新1 | 1.南京林业大学江苏省制浆造纸科学与技术重点实验室，江苏南京，210037 |
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| Abstract: |
| The concentration of black liquor is typically non-linearity, time-variable, big delay, big inertia in the alkali recovery of paper industry. Considering these problems, this paper explored the application of fuzzy control system in black liquor concentration control. A cascade control method based on fuzzy self-tuning PID controller was proposed. Because fuzzy control does not rely on the mathematical model of the object to be controlled, the control system conbimes the advantages of the cascade control and the fuzzy control and adjusts the PID parameters real-timely. Compared with the conventional black liquor cascade control, the simulation result indicated that this control strategy has the stronger self-adaptiveness and the good control quality, and can control the concentration of black liquor effectively. Its excellent control effect was verified in the pratical application. |
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