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一、引言在许多实验中,都要求将样品加热,并且样品温度的变化须同时间呈某种函数关系,典型的是温度随时间呈线性变化。因此,许多研究物质物理和化学特性的仪器设备,如线膨胀仪、色谱仪、差热分析仪以及研究高聚物性能的热变形仪、粘弹性谱仪等等,都已使用了各种型式的等速升温装置。其中的关键部件是程序给定器。以同步马达等机电设备传动程序凸轮或者直接传动线性电位器或滑线电阻产生给定信号的等速升温装置应用甚为普遍。但是,“在生产斗争和科学实验范围内,人类总是不断发展
I. INTRODUCTION In many experiments, the sample is required to be heated, and the change in the temperature of the sample must show some kind of functional relationship with time. Typically, the temperature changes linearly with time. As a result, many types of instrumentation that study physical and chemical properties of materials, such as linear dilatometers, chromatographs, differential thermal analyzers, and thermal deformators to study polymer properties, viscoelastic spectrometers, and the like, Constant temperature heating device. One of the key components is the programmer. Applications such as constant temperature heating devices that generate a given signal with a synchronous motor or other mechanical and electrical equipment drive program cam or direct drive linear potentiometer or slip resistance are commonplace. However, "mankind is constantly evolving within the context of the struggle for production and scientific experimentation