Tachogenerator for speed control of electric motors
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United States of America Patent
Stats
-
Nov 1, 1994
Issued Date -
N/A
app pub date -
May 19, 1987
filing date -
Jul 9, 1980
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tachogenerator for speed control of an electric motor including a stator and a rotor. A multipole permanent magnet is connected to the rotor and has at least a pair of magnetic poles, with the pole centers of the magnetic poles being uniformly arranged on a circle of a predetermined diameter. A wave winding is connected to the stator and separated from the magnet by an air gap having a width. The wave winding having angular repeat units of the wave winding equal to from 0.5 to 1.5 times a ratio of the diameter divided by the width.
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