中文摘要：

谐振腔微扰法在线测量透平油含水率的实验中，系统温度对测量结果的影响显著。为提高测湿系统的测量精度，提出了一种温度控制系统的实验方案并进行了测试。论文给出了该温度控制系统的硬件电路设计以及软件实现方法。为实现温度的稳定控制，采用多个小功率加热器轮流加热方式。该系统结构简单，操作方便，具有温度标定与显示，智能温度控制，温度图形显示等功能。实验应用表明温度测量、控制精度高，运行稳定，满足测湿系统的要求。

英文摘要：

Measuring results are very strongly affected by system temperature in the experiment of measuring the water ratio of turbine oil based on microwave resonant cavity perturbation. In order to improve the measuring precision, this paper put forward an experimental plan of temperature control system and implemented the experiment. The hardware circuit design and software implementation method of the temperature control system were presented in this paper. Several heaters with small power to work take turns, controlling the temperature steadily. This .temperature controlling system has simple struc- ture, proper price, and the practical application indicates that the system is with friendly interface and convenient opera- tion. Further more, its measuring and controlling accuracy are high and with stable operation, meeting to the requirements of wetness measuring system.