| 广义预测控制和PID控制在混凝投药中的应用 |
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| 引用本文： | 张俊,罗大庸. 广义预测控制和PID控制在混凝投药中的应用[J]. 信息与控制, 2012, 41(1): 89-94 |
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| 作者姓名： | 张俊 罗大庸 |
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| 作者单位： | 1. 中南大学信息科学与工程学院,湖南长沙410083;湖南现代物流职业学院,湖南长沙410131
2. 中南大学信息科学与工程学院,湖南长沙,410083 |
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| 摘 要： | 针对水处理过程中混凝投药的非线性和时滞特点,分析了其混凝投药的工作原理,采用传统的控制方法难以实现很好的控制效果.提出了一个混凝投药的方案,把广义预测控制算法和PID (proportion-integralderivative)控制算法结合起来,通过预测被控系统的若干个时刻的未来输出值,得到一个新的性能优化函数,通过实时优化被控对象的控制参数,计算出一个合理的混凝投药量.最后,采用Visual Basic软件编程完成该控制方案,并通过对混凝投药自动化控制的现场实验,得到较好的输出控制结果,从而验证了该控制方案的可行性.
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| 关 键 词： | 水处理 混凝投药 广义预测控制 PID (proportion-integral-derivative) |
The Application of GPC Control and PID Control to Coagulant Dosing |
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| ZHANG Jun , LUO Dayong. The Application of GPC Control and PID Control to Coagulant Dosing[J]. Information and Control, 2012, 41(1): 89-94 |
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| Authors: | ZHANG Jun LUO Dayong |
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| Affiliation: | 1 (1.School of Information Science and Engineering,Central South University,Changsha 410083,China; 2.Hunan Modern Logistics Occupation Technical College,Changsha 410131,China) |
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| Abstract: | According to the characteristics of nonlinearity and time delay of coagulant dosing in water treatment,it is difficult to realize a good result with traditional control method after analyzing the principle of coagulant dosing.A control scheme for coagulant dosing is proposed by combining generalized predictive control(GPC) algorithm with PID(proportion-integral -derivative) control algorithm.A new performance optimized function is got by predicting a number of controlled system’s future outputs.And a reasonable coagulant dosage is computed by optimizing controlled object’s parameters in real time.Finally,the scheme is coded with Visual Basic software.It gets a good output with local experiment on automatic control for coagulant dosing,which proves the feasibility of the control scheme. |
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| Keywords: | water treatment coagulant dosage generalized predictive control PID(proportion-integral-derivative) |
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