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通过利用两相电机、制动杯形发电机及其它装置可以达到速度或位置伺服系统中的测速机反馈,但是对直流传动装置来说一种途径(实际上它可在光电路公司 PMI 分公司找到)是光学测速机。测速机被用在伺服驱动装置中,以便测量输出件的转速、反馈一个信号,这对回路稳定(或对改善速度对输入电压的线性)是有益的。本文涉及在设计光学测速机时常遇到的某些关键问题。尤其在代替普通模拟设备的光学测速机中得出的优点是:无刷子噪声、脉动较小、
By using two-phase motors, brake cup generators, and other devices it is possible to achieve the tachometer feedback in a speed or position servo but for DC drive (in fact it is available at Opto Circuits Company PMI Branch Find) is an optical tachometer. A tachometer is used in a servo drive to measure the speed of the output and feed back a signal, which is beneficial to the loop stability (or to improving the speed versus linearity of the input voltage). This article addresses some of the key issues that are often encountered in designing optical tachos. In particular, the advantages of the optical tachometer that replaces the conventional analogue equipment are: brushless noise, less pulsation,