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| DMC-PID Cascade Decoupling Control of Temperature Difference in Displacement Digester |
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| DOI：10.11980/j.issn.0254-508X.2014.12.010 |
| Key Words:displacement digester control of temperature difference DMC-PID cascade decoupling robust |
| Author Name | Affiliation | | 汤 伟1 | 1.陕西科技大学电气与信息工程学院,陕西西安,710021 | | 王 震2,* | 2.陕西科技大学轻工与能源学院,陕西西安,710021 | | 党世宏1 | 1.陕西科技大学电气与信息工程学院,陕西西安,710021 | | 甘文涛2 | 2.陕西科技大学轻工与能源学院,陕西西安,710021 | | 于东伟2 | 2.陕西科技大学轻工与能源学院,陕西西安,710021 |
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| Abstract:Too large temperature difference will cause uneven cooking in displacement digester, it would affect the quality of the pulp. Flow-temperature difference cascade decoupling controller was used to implement the control of temperature difference. Considering there is strong decoupling relationship between the top flow and the bottom flow, and the temperature difference has a character of time delaying, the control of the temperature difference is required to be time-varying, therefore the DMC-PID cascade decoupling control system was designed. The results of Matlab simulation showed that the control system had better dynamic performance and robust, the performance of DMC-PID cascade decoupling controller was better than the controlling performance of the simple loop. |
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