Two-mode intelligent coordinating control of position for the welding positioner

A new intelligent control method for welding positioner is proposed. Applying an improved fuzzy controller and a variable PID controller, a two-mode intelligent coordinating controller ( TMICC ) is designed on basis of fuzzy logic and rules. The simulation and experimental results show that this control system can obtain better dynamic and static characteristics.

A high-precision control system for robotic welding positioner

Aiming at the robotic welding positioner with characteristic of parameter change, load change, nonlinearity, and an intelligent control system was researched and developed. This control system used a two-mode controller that based on Fuzzy and PID control method. The results of simulation show that the dynamic and steady performances of the intelligent controller are better than that of single PID or Fuzzy controller. This paper has made a detail theoretical analysis of the constitution design and real-time controlled software and brought up the design and fulfillment method of multi-task real-time control software of high precisely and numerically controlled welding positioner, which has a good result in practice.

数控焊接变位机双模控制器的试验分析

以工业控制计算机为控制器，在数控焊接变位机的实时控制中，设计了一种基于模糊控制和 Ｐ Ｉ Ｄ 控制加权合成的双模智能协调控制器．从仿真和实验的结果来看，这种控制系统取得了满意的动、静态性能，不仅响应速度超过了改进后的模糊控制，而且稳态误差也比常规的 Ｐ Ｉ Ｄ 控制大大减小了，在数控焊机变位机的控制中具有较高的实用价值．

气动调节阀保位系统在原油管道上的应用

为了确保原油管道在设定的压力下安全运行,采用MOKVELD气动调节输油站场阀来自动调节输油站场管道进出站压力和管道压力波。原油管道输送工艺的特殊性要求调节阀出现故障时应处于保位状态。分析了现有调节阀控制原理和故障保位方案。由于调节阀配套的FISHER DVC6010电气定位器本身不具备故障保位功能,通过对调节阀进行增加电磁阀和信号保护模块的改造,实现了调节阀的故障保位功能。改造后的调节阀已成功应用于原油管道,确保了管道安全平稳运行。

自动控制系统中调节阀组态方式讨论

调节阀是自控系统中的最终执行原件,一切控制方案的实施都由控制阀执行,因此控制阀回路的组态正确是自控系统正常工作的保证。本文通过对控制回路各个环节的讨论,明确了各环节的设置原则和方法,对实际工程项目具有指导意义。