![]() Some applications take advantage of this property of PZT transducers and use it to harvest energy from mechanical impacts. Their ability to self-generate voltage also eliminates the need for an external power source. This gives piezoelectric transducers a significantly broader range of potential applications compared to other types of transducers. Piezoelectric materials are extremely volatile in the sense that they have no restrictions on the shape in which they are manufactured. The movements are typically fine and small however, piezoelectric transducers are extremely accurate and precise.Īdvantages and Disadvantages Advantages and Disadvantages of Piezoelectric Transducers All in all, the piezoelectric transducer converts mechanical changes into an electrical signal, then can use that signal to generate displacement. Sometimes two piezoelectric transducers are used, with one acting as the sensor and one acting as the transducer, while other assemblies just utilize one piezo transducer to perform both functions. The other half of the transducer, the piezo actuator, can then use that electrical output to perform the necessary physical adjustments. A piezoelectric sensor will receive information about a mechanical force and convert that physical input to a proportional electrical output. When assembled, a piezoelectric transducer can be designed to perform either or both roles as the sensor and actuator, depending on how the transducer is constructed. In the same sense, a piezoelectric actuator can convert the electrical signal into mechanical energy or physical movement. A piezoelectric sensor senses mechanical changes in the outside world and translates them into an electrical signal which can be used to measure those changes. Piezoelectric transducers can have two roles: to sense mechanical changes and convert them to electrical energy (sensor), or to receive an electrical signal and translate it into physical displacement (actuator).ĭetailed Mechanics Detailed Mechanics of Piezoelectric TransducersĪ piezo transducer can be described as a combination of a piezoelectric sensor and a piezoelectric actuator, sometimes called a piezoelectric transmitter. In the same sense, those electrical signals can then be utilized to generate more mechanical energy. Piezo transducers, which are commonly referred to as PZT transducers, are able to measure these physical energies and convert them to a proportional form of electrical energies or electrical signals. The term piezo or piezoelectric refers to electricity caused by physical pressure. ![]() To begin this discussion of piezo transducers, we must first understand the components of such a product. Piezoelectric transducers are transducers that can convert any form of pressure or mechanical stress into electrical energy and also translate that electrical signal into physical movement. Transducers are devices that convert one form of energy into another, such as the transfer of mechanical input to electrical output and vice versa.
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