Direct sound field noise test system based on MIMO control

The invention provides a direct sound field noise test system based on MIMO control, which belongs to the technical field of measurement and test and comprises a sound source system, an MIMO control system, a data acquisition system, a control microphone and a test sensor. The sound source system is...

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Bibliographische Detailangaben
Hauptverfasser:	QI JIANGLONG, DU YUNXIANG, GUO DAOJUN, LIU SHIXIU, XIA PENG, FAN BOCHAO, ZHANG WEIHONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS PUBLIC ADDRESS SYSTEMS TARIFF METERING APPARATUS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	The invention provides a direct sound field noise test system based on MIMO control, which belongs to the technical field of measurement and test and comprises a sound source system, an MIMO control system, a data acquisition system, a control microphone and a test sensor. The sound source system is composed of a high, medium and low frequency combined loudspeaker array and used for generating a direct sound field. The MIMO control system comprises a noise controller, a power supply time sequencer, a sound card, a power amplifier and a microphone amplifier; the data acquisition system comprises a data acquisition unit and a signal conditioner; the control microphone is arranged between the loudspeaker and the test piece and is sequentially connected with the microphone amplifier and the sound card through a D-SUB interface; the test sensor is pasted and fixed on the surface of the test piece, and is connected with the signal conditioner, the data collector and the noise controller in sequence through a BNC (b