计算机控制力学持久机炉温的数学模型

本文讨论利用现代控制理论的一个实际例子.被控制的对象是一个带有两个独立绕组的电炉,采用两个热电偶来测量两个不同点上的炉温.炉子上、下部分的温度控制精度优于 2C.将被控对象处理为具有两个变量的LQG系统.数学模型由动态数学模型,卡尔曼 (Kalman)滤波器,最佳状态反馈及自适应设置点跟踪组成. 此系统已对70多台同类型炉子实现了群控.

A Mathematical Model of Computer-Controlled Creep-Testing Furnaces

An example of utilizing the modern control theory is discussed in this paper. The controlled object is an electric furnace with two independent heating windings. Two thermocupls are used to measure the furnace temperature at two different, points. The tccuracy of controlling the temperatures of the upper and lower portion of the furnace is better. than ±2°C. The object is treated as a LQG system with two varirbles. The mathematical model consists of dynamic mathematical model, a Kalman filter, an optimum state feedback and the self adapting set point following computation. This control system has been used in controlling more thtn seventy similar furnaces with a small process-control computer.