转速计在时速70英里时显示每分钟高达3000转。
测试结果表明，转速计在高转速和低转速场合都具有较好的性能。
The experiment shows that the tachometer has a good performance of measuring low rotation speed as well as high rotation speed.
针对现有的微型部件的转速测量方法的局限性，提出了一种基于偏振光检测的微型转速计的设计方案和相应的装置。
A novel miniature tachometer using polarized light detection is presented in this paper, in order to improve current methods of measuring miniature components' rotation speed.
本文介绍了一种基于AT 89 C52单片机的高精度数字转速计的实现方案。给出了硬件电路原理图和软件设计。
The paper introduces a program of high-accuracy digital tachometer based on AT89C52 SCM, and presents the diagram of applied circuit principle and software design.
速度计，转速表，行程表，燃油表和其他指标都列于最佳位置以保持视野清晰。
The speedometer, tachometer, trip meter, fuel gauge and other indicators are set in optimum position to keep the field of vision clear.
首先在分度头上标定加速度计，得到其零点和灵敏度，然后分别在离心机和转台上进行转速实验。
First we calibrate the accelerometers on dividing head to get the offset and sensitivity, then do the rotation experiments on centrifugal machine and rotating floor.
将普通固定转速高温粘度计改造为可调转速，可测出熔体的流动特性，进而能确定熔体是否为牛顿流体。
With a modified high temperature speed adjustable rotational viscometer, flow characteristics test of melt was carried ont. Based on the test vesults, it can be co…
在对转速和金属裂纹的数字检测中，我们应用pmos和CMOS组件设计了两种数字频率计。
In measuring the speed of rotation and the depth of metal crack, PMOSICs and CMOSICs were employed to design two kinds of digital frequency counters.
低通滤波器可选用一定阶数和转折频率的巴特沃斯滤波器，而加速度计输出的转速补偿则须预先对加速度计进行标定。
The centrifugal force caused by rotation of drilling tool will distort the accelerometer outputs, which can only be revised by rotation speed compensation.
同时利用观测器之估测转速当成回授讯号，达到无测速计直流马达的速度控制。
Using the estimated speed as feedback signal, we have accomplished the sensorless control of a DC motor.
同时利用观测器之估测转速当成回授讯号，达到无测速计直流马达的速度控制。
Using the estimated speed as feedback signal, we have accomplished the sensorless control of a DC motor.
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