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| Mathematical model establishment and automatic regulation of gas-collector pressure in coke furnace based on experimental method |
| ZHANG Zhong-Ming, WU Xiao-Su |
| Department of Mechanical and Electrical Engineering, Hangzhou Vocational and Technical College, Hangzhou 310018, China |
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Abstract The changing process of gas-collector pressure in coke furnace has the features of strong couple, time-variation, nonlinearity and uncertainty. The process flow and system structure of pressure control were presented and the mathematic model of the mentioned changing process was established by experimental method, which had higher model credibility than other methods. The producing process and experimental establishment could progress simultaneously and the automation of mathematic model establishment was realized. The implementation of completely decoupling algorithm, online modification of model parameters played a key role in improving regulating quality. Finally the DCS network structure to realize this process was proposed. The results indicate that this regulator has stable performance and good robustness.
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Published: 28 June 2009
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基于实验法的焦炉集气管压力数学建模及其自动调节的实现
焦炉集气管压力变化过程具有强耦合、时变、非线性和不确定性等特点.介绍了焦炉工艺流程和压力控制系统结构,并基于实验方法推出了集气管压力变化过程的数学模型,在一定程度上该方法比机理法具有更高的模型可信度,其生产过程和实验建模可以同时进行,并且实现数学建模的自动化.完全解耦算法的实现、模型参数的在线修正对于改善调节品质起到了关键作用.最后介绍了实现该过程的DCS网络结构,控制结果表明调节器的性能稳定,具有较好的鲁棒性.
关键词：
焦炉,
集气管压力,
数学模型,
耦合
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