Digital Tachometer with Fast Dynamic Response Implemented by a Microprocessor
Digital Tachometer with Fast Dynamic Response Implemented by a Microprocessor
复制标题
由微处理器实现的具有快速动态响应的数字转速计
DOI：
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发表时间：
1983
影响因子：
4.4
通讯作者：
R. Bonert
中科院分区：
文献类型：
--
作者：
R. Bonert
数字转速表由增量轴编码器和电子电路组成，用于评估数字或模拟速度信号。评估方法和电子电路的设计决定了转速表的动态性能和精度。对来自轴编码器的脉冲进行计数的常用方法通常提供较差的动态性能，特别是在需要高精度和宽速度范围的情况下。提出了一种方法，它提供了一个良好的动态响应结合良好的精度在很宽的速度范围内。虽然该过程非常快，但可以在基于微处理器和其他高度集成的可编程芯片的电子电路中使用该方法。这种实现进行了讨论，它是如何使用一个微处理器控制的电路影响可实现的精度的转速表。
A digital tachometer consists of an incremental shaft encoder and an electronic circuit to evaluate the digital or analog speed signal. The method of evaluation and the design of the electronic circuit determine the dynamic performance and the accuracy of the tachometer. The usual method of counting pulses coming from the shaft encoder normally provides a poor dynamic performance, particularly if high accuracy and a wide speed range are required. A method is suggested which provides a good dynamic response combined with good accuracy over a wide speed range. Though the process is very fast, it is possible to use this method in an electronic circuit based on a microprocessor and other highly integrated programmable chips. This implementation is discussed, and it is shown how using a microprocessor-controlled circuit affects the achievable accuracy of the tachometer.