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| 蒸煮锅内温差DMC-PID串级解耦控制 |
| DMC-PID Cascade Decoupling Control of Temperature Difference in Displacement Digester |
| 收稿日期： |
| DOI：10.11980/j.issn.0254-508X.2014.12.010 |
| 关键词: 置换蒸煮系统 温差控制 DMC-PID串级解耦 鲁棒性 |
| Key Words:displacement digester control of temperature difference DMC-PID cascade decoupling robust |
| 基金项目: |
| 作者 | 单位 | | 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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| 摘要:在置换蒸煮制浆过程中,蒸煮锅内温差过大会产生不均匀蒸煮现象,影响最终的蒸煮质量。针对蒸煮锅顶层流量与底层流量存在强耦合关系、蒸煮锅内温差大时滞特点、温差控制要求实时性,设计了DMC-PID串级解耦控制系统，通过流量-温差串级控制系统来实现对温差的控制。通过Matlab仿真表明,DMC-PID串级解耦控制系统具有更好的动态性能和鲁棒性,其控制效果明显优于单回路控制系统。 |
| 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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