摘要
针对定向扬声器换能器阵列设计的复杂性与不确定性问题,提出了一种基于NSGA-Ⅱ算法的矩形换能器阵元间距多目标优化方法。基于矩形换能器主要结构参数与阵元间距之间的动态性能分析,建立了以方向锐度角、主瓣波束宽度以及旁瓣级为协同优化目标的阵元间距解析函数和约束条件;在此基础上,采用NSGA-Ⅱ算法对所构建的多目标模型进行优化,由此获取矩形换能器阵元间距的最优可选集。仿真结果表明:在满足各项目标协同优化以及约束条件的情况下,所提出的矩形换能器阵元间距设计方法可实现换能器阵列旁瓣级较小且阵列指向性较好的定向扬声器。
Aiming at the complexity and uncertainty problem of directional speaker transducer array design,a multi-objective optimization method of rectangular transducer array spacing based on NSGA-Ⅱalgorithm is proposed.Based on dynamic performance analysis of the main structural parameters of rectangular transducer and array spacing,analytic function and constraint conditions of array spacing are established,which take direction sharpness angle,the main lobe beamwidth and the sidelobe level as the cooperative optimization objectives.On this basis,the NSGA-Ⅱalgorithm is used to optimize the constructed multi-objective model,and the optimal selection set of the array spacing of rectangular transducer is obtained.The simulation results show that the proposed design method of rectangular transducer array spacing can achieve directional loudspeaker with smaller sidelobe level and better array directivity under the condition of satisfying the cooperative optimization of each objective and constraints.
作者
陈师聪
章政
黄卫华
杨继荣
CHEN Shicong;ZHANG Zheng;HUANG Weihua;YANG Jirong(Institute of Robotics and Intelligent Systems,Wuhan University of Science and Technology,Wuhan 430081,China)
出处
《传感器与微系统》
CSCD
北大核心
2024年第4期128-131,共4页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(61773298)。
关键词
定向扬声器
矩形换能器阵列
阵元间距
多目标优化
NSGA-Ⅱ算法
directional loudspeaker
rectangular transducer array
array element spacing
multi-objective optimization
NSGA-Ⅱalgorithm
作者简介
陈师聪(1998-),男,硕士研究生,研究方向为定向扬声器;章政(1974-),男,博士,教授,硕士研究生导师,研究领域为移动机器人、人工智能。
