Electrically Operated Coal Hoist, Having Variable Speed Control
نویسندگان
چکیده
منابع مشابه
Frequency control of crane hoist speed
The voltage of the stator is usually controlled with thyristors. To ensure stable control of the load, the control system requires information about the motor speed. Up to now, tachometers or encoders have been used to measure the motor speed, however, tachometers, with their associated equipment, tend to be mechanically sensitive and are often difficult to install, due to space constraints. Th...
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ژورنال
عنوان ژورنال: Transactions of the American Institute of Electrical Engineers
سال: 1902
ISSN: 0096-3860,2330-9431
DOI: 10.1109/t-aiee.1902.4764245