Experimental Study of the Dynamic Behavior of Pulses Emitted by a Linear System of Electromechanical Transducers
| Authors | O.H. Leiko1 , A.V. Derepa2 , O.M. Pozdniakova2 , Y.I. Starovoit1, P.V. Popovych1 |
| Affiliations |
1National Technical of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", 37, Peremohy Ave., 03056 Kyiv, Ukraine 2The Central Scientific Research Institute of Armament and Military Equipment of the Armed Forces of Ukraine, 28 Povitroflotsky Ave, 03049 Kyiv, Ukraine |
| Е-mail | syi252162-ames@lll.kpi.ua |
| Issue | Volume 15, Year 2023, Number 3 |
| Dates | Received 18 April 2023; revised manuscript received 14 June 2023; published online 30 June 2023 |
| Citation | O.H. Leiko, A.V. Derepa, O.M. Pozdniakova, et al., J. Nano- Electron. Phys. 15 No 3, 03027 (2023) |
| DOI | https://doi.org/10.21272/jnep.15(3).03027 |
| PACS Number(s) | 43.30. + m, 43.38. + n |
| Keywords | Acoustic pulses, Piezoceramic transducer, Linear system. |
| Annotation |
A significant difference between electrical impulses, used for stimulation of elements of the acoustic location systems, and acoustic pulses, emitted by the systems, that occurs in the systems during their operation, has been experimentally. Physical reasons for the appearance of these differences, for linear systems of electromechanical piezoceramic transducers, are transients in electromechanical oscillatory systems of transducers and spatial spread of the systems. It is shown that the first reason is caused by the inertia of the transducers and the second – by the delay in the wave front when it propagates along the system.Typical dynamical changes in acoustic pulses, depending on the causes of their occurrence, were discovered. It is shown that the inertia of the mechanical oscillatory systems causes smooth increases and decreses, of the front and rear edges of acoustic pulses, respectively, in the directions of main and side lobes of the directivity of the system.It was discovered that typical dynamic changes in acoustic pulses caused by the delay in the front edge of the emitted wave, for the directions that are distant from the main and side lobes and interference zeros of the directivity, led to significant increase of their length, compared to electric ones and to the emergence of dips in the pulses’ amplitudes between their edges and their long sound after the end of the electrical stimulation of the systems’ transducers. Displayed dynamic changes in the emitted acoustic pulses compared to electrical stimulation pulses significantly worsen the parameters of location systems evaluated by the parameters of electrical impulses. Therefore, they must be considered when designing such systems. |
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