He aha te mea he modulator acousto-whatu?Kaiwhakarerekētanga AOM
Ko te whakarerekētanga ā-waho he tikanga whakarerekētanga ā-waho. I te nuinga o te wā, ko te taputapu ā-ā-ā-ā e whakahaere ana i te rerekētanga kaha o te hihi taiaho ka kiia hekaiwhakarerekētanga oro-whatu(AOM modulator). Ka mahi te tohu kua whakarerekētia ki te transducer electroacoustic i te āhua o te tohu hiko (amplitude modulation), kātahi ka hurihia hei mara ultrasonic e huri ana i te āhua o te tohu hiko. Ina haere ngā ngaru mārama i roto i te reo acousto-whatu, nā te pānga acousto-whatu, ka whakarerekētia te kawe whatu ka huri hei ngaru kua whakarerekētia te kaha e "kawe" ana i ngā mōhiohio.
Te kaupapa mahi
Te whakarerekētanga oro-whatuHe tukanga ā-tinana e whakamahi ana i te pānga acousto-whatu hei uta i ngā mōhiohio ki runga i tētahi kaikawe auau whatu. Ka mahi te tohu whakarerekētia ki te transducer electroacoustic i te āhua o tētahi tohu hiko (whakarerekētanga amplitude), kātahi ka hurihia hei mara ultrasonic e huri ana i te āhua o tētahi tohu hiko. Ina haere ngā ngaru mārama mā roto i te reo acousto-whatu, nā te pānga acousto-whatu, ka whakarerekētia te kaikawe whatu ka huri hei ngaru whakarerekētia kaha e "kaikawe" ana i ngā mōhiohio.
Ko te whakarerekētanga acousto-whatu (AOM modulator) he mea tito noa mai i ngā tioata acousto-whatu, ngā transducers, ngā taputapu mimiti me ngā taraiwa. Ka mahi te putanga tohu whakarerekētia mai i te taraiwa ki te transducer i roto i te āhua o te tohu hiko, kātahi ka hurihia hei ngaru ultrasonic e rerekē ana i roto i te āhua o te tohu hiko. Ina haere te ngaru ultrasonic i roto i te reo acousto-whatu, ka puta he pēhanga ā-rohe me te whakaroa o te reo, ka puta he taumahatanga rapa. Ka huri tēnei taumahatanga i ia wā me te wā, ka puta he āhuatanga kiato tauutuutu o te reo, he rite ki te kurupae ā-wāhanga. Ina haere te mārama i roto i tēnei reo e whakararuraruhia ana e ngā ngaru ultrasonic, ka puta he āhuatanga diffraction. Ka kiia tēnei āhuatanga ko te pānga acousto-whatu. I raro i te pānga o te oro me te mārama, ka whakarerekētia te kawe whatu, ka huri hei ngaru whakarerekētia e "kawe" ana i ngā mōhiohio.
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Wā tuku: Pipiri-04-2025