A4负载条件下功率换能器的特性研究-声学技术.PDF

2 1 , 2 2 ,f 0 ,f 1 f 2 , Q , Ym0 ,f r f a , C , tanD , 2 1/ 2 : K ef f = [ 1- (f r/f a) ] = 0. 354, $f = f 2 - f 1 = 0. 0923kHz, = 147. 4 , = 0. 254 , R m 8 L H c = 61pf , 2 , , = 40. 4341 , = 40. 3905 , = 40.4828 f 0 kHz f 1 kHz f 2 kHz y m0= 6. 78461ms, Q= 438. 071,f r = 40. 4316kHz,f a = 43. 2298kHz C= 0.4786nF,t D= 0. 0697, ( at 1 kHz) 4 , , 1LIN Shuyu. Study of th e sandw ich ed piezoelectric ultrasonic tor sional tran sducer. Ultr ason ics, 1994; 32( 6) : 461465. 1 X A4 颜忠余　方启平　何北星　黄金兰　林仲茂 ( 100080) 3 , , , : The characteristi cs of high power ultrasonic transducer under l oads X 161 YA N Zhon yuFA NG Qipin HE Beix in HUA NG JinlanLIN Zhon mao ( Institute of Acou stics, Academia Sinica, Beijin 100080) Th e characteristics of hi h pow er ultrasonic transducer under loads and work in situ ations were predicted well by calcu- lated results of ener al lin ear ac