tachogenerator

tachogenerator

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A generator employed to measure engine speed electrically. It contains a three-phase stator and two-pole permanent magnet rotor. Rotation of the magnet induces a three-phase voltage in the stator windings; the frequency of this winding is proportional to the engine speed. The signal is then fed to the tachometer or RPM gauge.
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References in periodicals archive ?
The hub motor's rotating speed data was acquired with a tachogenerator which generates a linear voltage amplitude level directly proportional to its rotating speed within the operation range.
The examples of position or velocity sensors can be potentiometers, encoders, tachogenerator and linear variable differential transformer (LVDT) etc.
2) contains the technical realization of a nonlinear single-input/single-output system consisting of drive motor (M1), identical motor (M2) (used as current generator), tachogenerator (T), incremental encoder (I) and clutch (K).
The block diagram of servodrive speed control circuit with HSM60 electric servodrive and K4A5 tachogenerator ([K.sub.W] = 0,0184 Vs/rad) is shown in Fig.1.