带盖板预旋进气系统的温降实验误差分析

The Error Analysis of an Experiment about Drop in Temperature in a Pre-swirl System with a Cover-plate

在旋转系统中,温度的测量一直是一项非常困难的工作,而且由于外界的各种干扰和系统误差的存在,温度测量的准确度也很难得到保证。通过实验分析了预旋进气系统温降测量的系统误差和随机误差的影响。实验结果表明:在预旋系统的温降测量中,系统误差能够对实验的结果产生比较大的影响。在确保加工精度和测量仪器的精度较高的情况下,随机误差的影响非常小,甚至可以忽略不计。

In a rotor system,the temperature measurement is always very difficult. And it＇s also difficult to assure the precision with many disturbances by environment and system error. The system error and random error of temperature drop measured was analyzed in a pre-swirl system by experiment. The results show that the system error could bring on a bigger influence than the random error,which ever could be ignored with the help of high precision apparatus and high precision machining.