一、引言与问题的提出测量快速变化的测量值时,满足以下两个条件是很重要的。1.测量装置尽量不要影响被测物体的性能;2.所得测量值不应由于测量系统具有不可控式的传输性能而带来误差。特别在传动中测量快速变化的转数和转矩时必须重视这些条件,因为有时要满足这些条件是相当困难的。 I. INTRODUCTION AND PROBLEM QUANTITIES When measuring rapidly changing measurements, it is important to satisfy the following two conditions. 1. The measuring device should not affect the performance of the measured object as much as possible. 2. The measured value should not bring errors due to the uncontrollable transmission performance of the measuring system. In particular, these conditions must be taken into account when measuring rapidly changing speeds and torques in drives because sometimes it is difficult to meet these conditions.