数字化提取油气润滑ECT系统电容值的方法研究

Research on Methods for Extracting Digitally Capacitance Values of ECT Used in Oil-air Lubrication System

摘要:

为了克服模拟器件的约束,进一步提高系统的精度和速度,提出了3种数字化提取ECT电容值的方法,并通过软件求解出了各种数字化提取电容值的方法电容值,最后通过4个评价指标综合选定数字正交解调作为最后数字解调的方案,结果表明:采用正交解调数字化提取电容值的方法不仅减低了系统的制作成本,而且在系统的速度和精度方面基本达到最佳的性能。

Abstract:

To overcome constraints of analog devices and further improve precision and speed of the system, three methods to digitally extract ECT capacitance values are proposed and all capacitance values of three digital demodulations are solved. Finally, digital quadrature demodulator is selected as the most optimal digital demodulation by four evaluations. The results show that cost of the system is decreased and speed and accuracy of the system are improved more.