high accuracy frequency testing

基本解释

Based on the theory of frequency testing , a system of the quartz calorimeter and the high accuracy frequency testing method are described .
本文以测频理论为基础，围绕石英晶体量热仪中测温系统这一主题，讨论了相关的高精度测频技术，并进行了试验研究。
The testing results indicate that the new apparatus has some notable characters as follows: (1) Fully digital closed circuit control system with high accuracy and wide frequency range of 0 20Hz;
新动三轴装置有几个显著特点：（1）实现了动三轴系统的全数字闭环控制，实现了系统围压、反压、液压源的自动控制和系统参数的自动测量，有效地提高了系统的频宽并改善了系统精度；
The testing data from simulated aerospace environment show that the adaptive controller has a characteristic of high accuracy of frequency-tracking as well as high accuracy of swing scan control.
实验测试结果表明，所设计的数字式自适应控制器具有频率跟踪和摆幅控制精度高的特点。