新型电磁式高灵敏度声波换能器的结构设计与研究

发布时间：2018-03-14 07:47

本文选题：声波拒止设备　切入点：电磁换能器　出处：《电子科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：声波拒止设备作为非致命性武器的一种,近年来广泛应用于防恐维稳、区域警戒、海上执法、边境防护、机场驱鸟等维护国家利益与安全以及保护人民群众生命财产安全的各种场合。其中高声压级电磁换能器是声波拒止设备的核心部件,是声波拒止设备高声压高指向性输出的基础保证。论文依托某警用装备研究实验室的实际项目需求,项目旨在研发一套拥有自主知识产权的车载声波拒止设备,而本文主要任务在于适用该设备的新型电磁换能器的研制。本文首先对课题相关的国内外现状进行总结,阐述高声压级电磁换能器研制的必要性,对声波拒止设备的性能指标需求进行分析,得到电磁换能器单体的性能参数,提出了换能器的高灵敏度输出理论,完成新型电磁换能器的总体结构设计,并建立等效电路模型,探究换能器真实效率影响因素。其次围绕高灵敏度这个最终设计目标,完成电磁换能器磁路模块、振动部件模块、相位塞和号筒模块的详细设计,并通过虚拟样机技术实现电磁换能器的虚拟装配,对设计的电磁换能器多物理场耦合特性进行深入分析,完成虚拟样机的耦合仿真分析,研究了电磁换能器的组阵特性,为声波拒止设备的组阵成型提供理论依据。最后完成电磁换能器的制作过程和测试,验证了新型电磁换能器在输入功率为25W时,最大声压级达到130dB以上,满足声波拒止设备换能器单体声压级要求。
[Abstract]:As one of the non-lethal weapons, sonic rejection devices have been widely used in recent years in the areas of terrorism prevention and stability, regional vigilance, maritime law enforcement, border protection, Airport bird displacement and other occasions to safeguard national interests and safety and to protect the lives and property of the people. Among them, high-pressure electromagnetic transducers are the core components of acoustic rejection equipment. This paper relies on the actual project demand of a police equipment research laboratory, the project aims to develop a set of on-board acoustic wave rejection equipment with independent intellectual property rights. The main task of this paper is to develop a new type of electromagnetic transducer which is suitable for the equipment. Firstly, this paper summarizes the current situation of the subject at home and abroad, and expounds the necessity of the development of the electromagnetic transducer with high acoustic pressure level. The performance requirements of acoustic rejection equipment are analyzed, and the performance parameters of electromagnetic transducer unit are obtained. The high sensitivity output theory of the transducer is put forward, the overall structure design of the new type electromagnetic transducer is completed, and the equivalent circuit model is established. Secondly, focusing on the final design goal of high sensitivity, the detailed design of the electromagnetic transducer's magnetic circuit module, vibration component module, phase plug and horn module is completed. The virtual assembly of electromagnetic transducer is realized by virtual prototype technology. The coupling characteristics of multi-physical field of the designed electromagnetic transducer are deeply analyzed, and the coupling simulation analysis of virtual prototype is completed, and the array characteristics of electromagnetic transducer are studied. It provides a theoretical basis for the array shaping of acoustic rejection equipment. Finally, the fabrication process and test of the electromagnetic transducer are completed. It is verified that the maximum sound pressure level of the new type electromagnetic transducer is more than 130 dB when the input power is 25 W. To meet the acoustic rejection equipment transducer unit sound pressure level requirements.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB552

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