Classroom

被引：0
|
作者：
Ravi, Harish [1 ]
Khaparde, Rajesh B. [2 ]
机构：
[1] IIT Madras, Dept Elect Engn, Chennai 600036, Tamil Nadu, India
[2] Homi Bhabha Ctr Sci Educ, Mumbai 400088, Maharashtra, India
来源：
RESONANCE-JOURNAL OF SCIENCE EDUCATION | 2010年 / 15卷 / 06期
关键词：
DC motor; motor constant; motor speed control; speed-torque curve; start-stop dynamics;
D O I：
10.1007/s12045-010-0062-0
中图分类号：
G40 [教育学];
学科分类号：
040101 ; 120403 ;
摘要：
We present here a set of simple experiments through which various characteristics of a DC motor can be investigated. The experiments also provide insights on how to control a DC motor. We first study the back-emf versus angular speed and the torque versus current characteristics. We then extract the moment of inertia of the rotor and the speed-torque curve for the load from the start-stop dynamics of the motor. Finally, we study an alternate way of obtaining the angular speed from the back-emf waveform.
引用
收藏
页码：561 / 572
页数：12
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