自适应预测控制在三容水箱液位系统中的应用

发布时间：2018-04-21 17:03

本文选题：三容水箱系统 + 液位控制　；参考：《机械设计与制造》2017年01期

【摘要】：三容水箱液位系统具有典型的非线性、大滞后特点,能够很好地模拟复杂的工业液位控制对象,而经典控制理论和现代控制理论在三容水箱液位系统中很难取得好的控制效果。通过分析三容水箱物料平衡关系,构建液位控制系统模型,并进行离散化处理,结合自适应预测控制方法对三容水箱液位系统控制进行研究,并完成系统控制器的设计。仿真结果表明,自适应预测控制方法综合了自适应控制方法和预测控制方法,不仅维持了自适应控制方法本身的特性,还具备预测控制方法的控制效果好、鲁棒性强等优点。因此,与传统PID控制方法和自适应控制方法相比,自适应预测控制方法能够获得更好的控制跟踪性能,其控制精度更高,响应速度更快速。
[Abstract]:The three-tank liquid level system has the characteristic of typical nonlinearity and large lag, which can well simulate the complex industrial liquid level control object. However, the classical control theory and modern control theory are difficult to obtain good control effect in the three-tank liquid level system. Through analyzing the material balance relation of three-tank, the model of liquid level control system is constructed, and the discretization treatment is carried out. Combined with adaptive predictive control method, the control of three-tank liquid level system is studied, and the design of system controller is completed. The simulation results show that the adaptive predictive control method integrates the adaptive control method and the predictive control method, which not only maintains the characteristics of the adaptive control method, but also has the advantages of good control effect and strong robustness of the predictive control method. Therefore, compared with the traditional PID control method and the adaptive control method, the adaptive predictive control method can obtain better control tracking performance, higher control accuracy and faster response speed.
【作者单位】：广西职业技术学院机械与汽车技术系;
【基金】：基金项目:桂教科研(2014)8号文YB2014485
【分类号】：TP273

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