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Zak_WANG

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СµÜÓÐÈçÏÂÒ»¸ömatlab³ÌÐò£¬12¸öδ֪Êý£¬12¸ö·½³Ì¡£µ±W=320000ʱ£¬ÔËÐкóÓн⣬ÇÒÕýÈ·¡£µ±°ÑW΢µ÷³ÉW=320001£¬ÔËÐкó¾Ícannot find explicit solutionÁË¡£Çë´óÉñÃÇÖ¸µãһϣ¡Ð»Ð»´ó¼Ò£¡
clear;clc
syms A1 B1 C1 D1 phi1 A2 B2 C2 D2 phi2 k Wm theta
f=125000.0;
W=320000.0;
z1=61.0;
z2=z1*3;
a=9.525;
f1=k-2*pi*f/Wm;
f2=W-Wm/(1-(phi2-phi1)*Wm/(2*pi*f*(z2-z1)));
f3=A1-1+(4/pi)*(C1*cos(2*pi*f*z1/Wm)+D1*sin(2*pi*f*z1/Wm));
f4=B1-(4/pi)*(D1*cos(2*pi*f*z1/Wm)-C1*sin(2*pi*f*z1/Wm));
f5=C1-int(cos((2*pi*f/Wm)*(z1^2+4*a^2*(cos(theta))^2)^0.5)*(sin(theta))^2,0,pi/2);
f6=D1-int(sin((2*pi*f/Wm)*(z1^2+4*a^2*(cos(theta))^2)^0.5)*(sin(theta))^2,0,pi/2);
f7=phi1-atan(B1/A1);
f8=A2-1+(4/pi)*(C2*cos(2*pi*f*z2/Wm)+D2*sin(2*pi*f*z2/Wm));
f9=B2-(4/pi)*(D2*cos(2*pi*f*z2/Wm)-C2*sin(2*pi*f*z2/Wm));
f10=C2-int(cos((2*pi*f/Wm)*(z2^2+4*a^2*(cos(theta))^2)^0.5)*(sin(theta))^2,0,pi/2);
f11=D2-int(sin((2*pi*f/Wm)*(z2^2+4*a^2*(cos(theta))^2)^0.5)*(sin(theta))^2,0,pi/2);
f12=phi2-atan(B2/A2);
S=vpasolve(f1,f2,f3,f4,f5,f6,f7,f8,f9,f10,f11,f12);
% s1=S.A1
% s2=S.B1
% s3=S.C1
% s4=S.D1
% s5=S.phi1
% s6=S.A2
% s7=S.B2
% s8=S.C2
% s9=S.D2
% s10=S.phi2
% s11=S.k
% s12=S.Wm
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