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Research on optimization techniques of ultrasonic phased array beam directivity based on Chebyshev weighting

机译:基于Chebyshev加权的超声相位阵列光束方向性优化技术研究

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Ultrasonic phased array is an advanced nondestructive testing technology and Beam directivity is a key technical index of ultrasonic phased array testing system which has direct influence on testing effects. In order to meet the requirements of side lobe level, beam directivity in far field can be optimized by Chebyshev weighting while dimensional parameters of transducer are fixed. Furthermore, the minimal main lobe width can be obtained as side lobe level is specified, so as to get the best testing effects.
机译:超声波相控阵是一种先进的非破坏性测试技术,光束方向性是超声波相控阵测试系统的关键技术指标,其对测试效果有直接影响。为了满足侧瓣级的要求,可以通过Chebyshev加权优化远场的光束方向性,而换能器的尺寸参数是固定的。此外,可以获得最小的主叶宽度作为侧瓣级别,以获得最佳的测试效果。

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