【摘要】 介绍了目前自动测量与自动控制中转速测量的几种实用方法,分析了各种方法的基本原理、实现手段和测量误差,具有较高的实用价值。更多还原

【Abstract】 Introduces several kinds of measurement method on rotating speed used in automatic measuring and control presently. Analyses their fundamental principle, realization method and measuring error. All these methods have high practical values.更多还原