基于STM32的低功耗智能定位阀控制器设计

Design of Low Power Intelligent Positioning Valve Controller Based on STM32

摘要:

针对工业控制中传统阀门定位器稳定性差、定位精度低、抗干扰能力差、智能化程度低等缺点,以及我国自主研发生产高精度阀门定位器上的不足。设计了以ARM Cortex-M3 内核处理器作为核心控制器的低功耗智能定位阀控制系统。设计中采用优化的PID控制算法,并采用齐格勒-尼克尔斯法则,自整定PID参数。通过二线制HART 协议实现与外界设备通讯。实践证明自整定PID参数能够更好的适应各种控制现场,控制系统能够稳定、快速的运行实现了阀门位置的精确定位和本安低功耗设计的要求。

Abstract:

For the traditional valve locator has much disadvantage in the industrial control system, such as poor stability and anti-interference ability, low precision and degree of intelligence, and the deficiency of independent research and development production of our country about the high precision valve locator. This paper designs a low power intelligent positioning value control system, with ARM Cortex-M3 as the core controller. The control algorithm uses the optimized PID, and Self-tuning PID parameters which adopt Ziegler-Nichols law in the design. With two-wire system HART protocol implementation to communicate with the external device. Practice shows that the self-tuning of PID parameters can better adapt to all kinds of control field, that make the system run fast ,stable and realizes the precise localization of valve position and the essential requirements of safety ,low power design.