智能阀门设计与控制方法研究

Research on Intelligent Valve Design and Control Method

摘要:

为了满足智能阀门在工业生产中极高的标准，本文进行研究了智能阀门设计与控制方法，设计了智能阀门硬件系统，包括电气转换模块、微处理器、信号处理模块和阀位反馈模块四个部分，以主控制器LPC2290为核心，以及A/D转换器和CAN总线进行通信，实现了智能阀门的控制功能，为了提高智能阀门控制的精确度，本文利用PID控制器和FUZZY-PI复合算法，通过PID控制的基本原理和稳定边界法整定PID控制参数的过程，完成PID控制器的设计，再结合FUZZY-PI复合算法实现智能阀门的偏差判别与条件控制和多路转换开关与信号的转换，实现智能阀门的高精度控制，最后设计了智能阀门定位器系统，实现了智能阀门的精准定位与自我诊断功能，实验表明，本文研究的系统在4s时就能够达到控制稳定，并且控制精确度可高达95%。

Abstract:

In order to meet the extremely high standards of smart valves in industrial production, this paper studies smart valve design and control methods, and designs smart valve hardware systems, including electrical conversion modules, microprocessors, signal processing modules and valve position feedback modules. Part, with the main controller LPC2290 as the core, and the A/D converter and CAN bus for communication, the intelligent valve control function is realized. In order to improve the accuracy of the intelligent valve control, this article uses the PID controller and the FUZZY-PI compound algorithm , Through the basic principles of PID control and the process of tuning PID control parameters by the stable boundary method, complete the design of the PID controller, and then combine the FUZZY-PI compound algorithm to realize the deviation judgment and condition control of the intelligent valve and the conversion of multiple conversion switches and signals. , Realize the high-precision control of the smart valve, and finally design the smart valve positioner system to realize the precise positioning and self-diagnosis function of the smart valve. Experiments show that the system studied in this paper can achieve control stability and control accuracy in 4s. It can be as high as 95%.