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通过分析给水泵调速系统的工作原理,建立了给水泵系统核心装置液力偶合器的过程动态数学模型,并给出了其控制系统的设计方案。在分析传统PID控制器基本原理的基础上,提出了一种改进的PID控制器—自适应变参数PID控制器,并基于建立的数学模型进行了控制系统的仿真和实际应用。仿真结果表明该改进的控制器能同时综合多套传统PID控制参数的优点,控制性能良好。实际应用表明本文建立的数学模型与改进的变参数PID控制器在工业现场具有使用效果良好。
By analyzing the working principle of the feed water pump speed regulation system, the dynamic mathematical model of the process of the hydraulic coupling of the feed water pump system is established and the design scheme of the control system is given. Based on the analysis of the basic principle of the traditional PID controller, an improved PID controller - adaptive variable parameter PID controller is proposed. Based on the established mathematical model, the simulation and practical application of the control system are carried out. The simulation results show that the improved controller can integrate the advantages of multiple sets of traditional PID control parameters at the same time, and the control performance is good. The practical application shows that the mathematical model established in this paper and the improved variable parameter PID controller have good effect in industrial field.