Adaptive directivity synthesis simulation of point source array using algorithm combined directive and recursive method(LMS method)

직접법과 반복법(LMS법)의 합성 알고리즘을 이용한 직선배열 점음원의 적응 지향성 합성 SIMULATION

A numerical simulation is carried out on the directiveity synthesis of ultrasonic transducers by point source array. Directive method with combined LMS(Least-Mean-Square) method is practiced by means of a iterative method to realize the desired directivity. The directiviey of quasi-ideal beam with a beam width and a directive arbitrary specified was chosen. On the numerical resut, Proposed algorithm shows higher speed of clculating simulation than that of LMS method, and make adaptive control, which enables the desired directivity. Numerical simulations are carried out by PC(CPU:80486 DX2, RAM 16Mbyte).