Electromechanical Transducer


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electromechanical transducer

[i¦lek·trō·mi′kan·ə·kəl tranz′dü·sər]
(electronics)
A transducer for receiving waves from an electric system and delivering waves to a mechanical system, or vice versa. Also known as electromagnetic transducer.

Electromechanical Transducer

 

a device for converting mechanical motion (vibrations) into variations of an electric current or voltage (electric signals) and vice versa. Electromechanical transducers are used primarily as actuating mechanisms in automatic control systems and as sensors of mechanical motion in automation and measurement technology. They may be classified according to the conversion principle used as resistive, electromagnetic, magnetoelectric, and electrostatic types; they may also be classified according to the type of output signal as analogue and digital types (with analogue and discrete output signals, respectively).

Electromechanical transducers are evaluated with respect to their static and dynamic characteristics, the sensitivity (or transfer ratio) E = Δyx (where Δy is the change in the output quantity y when the input quantity x is changed by Δx), the operating frequency range of the output signal, the static error of the signal, and the static error of conversion. Examples of electromechanical transducers are the measuring mechanism of a permanent-magnet instrument, a loudspeaker, a microphone, and a piezoelectric transducer.

REFERENCE

Elektricheskie izmereniia neelektricheskikh velichin, 5th ed. Edited by P. V. Novitskii. Leningrad, 1975.
References in periodicals archive ?
The amplitude-frequency response of a high-frequency resonant electromechanical transducer [10] connected to CPS at distances (gaps) between a high-frequency conductor and an electrically conductive ferromagnetic OT surface: 1-7 mm; 2-4.5 mm; 3-2 mm; 4-1 mm
Piezo bimorphs is a class of electromechanical transducers converting an electrical voltage into a mechanical displacement and vice versa.
Reciprocity applies to a category of passive electromechanical transducers that have two important characteristics--they are purely electrostatic or purely electromagnetic in nature and they are reversible--can be used as either a source or a receiver of mechanical energy.
Bing's discovery will lead to more efficient electromechanical transducers in medical ultrasonic diagnostics and therapy, machine tool control, vibration suppression, undersea communication, and wireless telecommunications.

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