| 串级-Smith预估控制在温度大滞后系统中的应用 |
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| 引用本文： | 陈莉,张锋.串级-Smith预估控制在温度大滞后系统中的应用[J].仪表技术,2007(2):37-39. |
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| 作者姓名： | 陈莉 张锋 |
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| 作者单位： | 1. 安徽工程技术学校,安徽,宿州,234000;东南大学,自动化学院,江苏,南京,210096
2. 安徽省宿州卫校,安徽,宿州,234000 |
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| 摘 要： | 在工业过程中，大滞后系统普遍存在。文章以一实验用加热装置为研究对象，针对该温度控制系统具有大滞后的特点，采用串级控制结构结合Smith预估控制器的控制方案。内环采用Smith预估器，大幅度降低滞后对控制系统动态性能的影响；外环采用PI控制实现系统无静差。实验表明，该种控制系统与单回路PID控制或Smith预估控制相比具有更优的动态特性和鲁棒性。
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| 关 键 词： | 大滞后 串级控制 Smith预估 |
| 文章编号： | 1006-2394（2007）02-0037-03 |
| 修稿时间： | 2006-10 |
Application of Cascade-Smith Predictor Control in Large Time-delay Temperature System |
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| CHEN li,ZHANG Feng.Application of Cascade-Smith Predictor Control in Large Time-delay Temperature System[J].Instrumentation Technology,2007(2):37-39. |
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| Authors: | CHEN li ZHANG Feng |
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| Affiliation: | 1. Anhui Engineering and Technology School, Suzhou 234000, China; 2. Department of Automation, Southeast University, Nanjing 210096, China; 3. Anhui Suzhou Hygiene School, Suzhou 234000, China |
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| Abstract: | The large time-delay systems widely exist in industry process. According to the controlled object of the temperature with strong time-delay, a scheme by use of cascade control and Smith controller is adopted. Smith controller is used in inside loop to reduce the influence on dynamic characteristic by large time-delay . PI controller is used in outside loop to eliminate static error. The experiment showed that the cascade control and Smith controller system were much better than single PID loop or predictor system in dynamic performance and robustness. |
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| Keywords: | PID |
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