基于逆系统方法的强制循环蒸发器非线性控制  

Nonlinear Control of Forced-Circulation Evaporator via Inverse System Method

作　　者：刘爱玲[1] 马欢[2] 齐书康 

机构地区：[1]郑州大学教务处,河南郑州450001 [2]郑州轻工业学院软件学院,河南郑州450001 [3]郑州大学电气工程学院,河南郑州450001

出　　处：《郑州大学学报（工学版）》2015年第4期24-27,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(60974005)

摘　　要：强制循环蒸发器是典型的多输入多输出强耦合非线性系统,常规的线性控制方法难以满足高性能控制的要求.在对强制循环蒸发器结构和工艺过程深入分析的基础上,建立了其非线性动态模型.然后采用逆系统方法设计了状态反馈控制器实现闭环系统的精确线性化和解耦.最后,对得到的伪线性化系统利用最优控制理论设计优化控制器.仿真结果表明:与传统PID控制器相比,提出的非线性控制策略能有效提高强制循环蒸发器的动态性能.Forced-circulation evaporators（ FCE） are typical multi-input multi-output strong coupling nonlinear systems and the conventional linear system controller cannot guarantee the high performance of the system. In this paper,a nonlinear dynamic model was constructed based on the analysis of the construction and engineering process of FCEs. Then,with the inverse system method,a state feedback controller was proposed to realize the linearization and decoupling. Finally,for the obtained pseudo-linear system,an optimal controller was put forward. The simulation results showed that compared to the conventional PID controller,the proposed nonlinear controller can effectively improve the dynamic performance of FCEs.

关 键 词：强制循环蒸发器 逆系统方法 反馈线性化 解耦 最优控制 

分 类 号：TQ245[化学工程—有机化工] TP273[自动化与计算机技术—检测技术与自动化装置]