小功率温度调节器

• 作 者: 倪中坚
• 出 处: 电测与仪表
• 发表日期: 1978年03期
• 关键词: 温度调节器 功率 精密仪表 仪表工业 温度控制器 控制精度要求 温度控制系统 恒温控制 仪表设备 分布参数

在仪表工业和科学实验中,常常要对某些小型精密仪表或者仪表设备中的一些重要元部件进行恒温控制,以保证它的工作精度。这些温度控制器的功率一般在100W以下,小至10W左右。而控制精度要求较高,通常优于±1℃,乃至±0.1℃以上。本文将讨论这种小功率温度调节器的基本参数和控制电路。一、讨论条件被控部件的温度是一个分布参数,因此,温度控制系统是一个分布参数控制系统。但在我们所讨论的小功率系统中,被控部件的热容量较小(不大于1000瓦秒/℃),温度场不复杂,或对温度场要求不严格,因此,对温度T,

In the instrumentation industry and scientific experiments, it is often necessary to thermostatically control some important components in some small precision instruments or instrumentation to ensure their working precision. The power of these temperature controllers are generally below 100W, as small as 10W. The control accuracy of the higher, usually better than ± 1 ℃, and even ± 0.1 ℃ above. This article will discuss the basic parameters of this low-power temperature regulator and control circuit. First, the discussion conditions Controlled component temperature is a distribution parameter, therefore, the temperature control system is a distributed parameter control system. However, in the low-power system under discussion, the heat capacity of the controlled components is small (not greater than 1000 watt seconds / ° C), the temperature field is not complicated, or the temperature field is not strictly required. Therefore,