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求助,编写的矩阵微分方程组,然后在运行的时候报错:错误使用 + 矩阵维度必须一致。之后我将式子中求导的项去掉了,然后仍然要求维度必须一致,请问这该如何解决。程序如下:7 t) E& `; k% k" [+ t. F
opt=odeset;opt.RelTol=1e-8;. _$ J1 `# _9 W- q
Tmh=0;Tmp=0;Mh=4100;Ihx=4032;Ihy=3461;Ihz=4980;Ihxy=31;Ihxz=637;Ihyz=26;Mp=1500;Ipx=117;Ipy=861;
7 ~8 K r9 E( @. RIpz=754;Ipxy=0.615;Ipxz=152;Ipyz=14.5;
2 f- Y+ H- c% ^9 I; Z4 _g=9.81;xh=0.237;yh=0.013;zh=0.404;xp=0.5;yp=0;zp=0;xhp=0;yhp=0;zhp=0.96;xch=0;ych=0;zch=0.9;u=12*sin((pi/3)*t);
. t( U* Y# ]( U% C+ D' mv=0;w=12*sin((pi/3)*t);# w( `0 U4 a/ m/ ^
p=12*sin((pi/3)*t);q=12*sin((pi/3)*t);r=12*sin((pi/3)*t);theta=12*sin((pi/3)*t);varphi=12*sin((pi/3)*t);Ch=100;Cp=90;Kp=100;
u/ ^& }8 s ? {- fA=p*cos(x(1))*cos(x(2))+q*sin(x(1))*cos(x(2))-r*sin(x(2));
' i0 r' g' t2 ZB=p*cos(x(1))*sin(x(2))+q*sin(x(1))*sin(x(2))+r*cos(x(2));
; ^* _1 e; I! x2 j7 V: pE=-p*sin(x(1))+q*cos(x(1));
6 n7 a* c" j9 t2 U) lF=p*cos(x(1))+q*sin(x(1));
4 `+ L" {' P: J% {: i& ee=-diff(p)*sin(x(1))+diff(q)*cos(x(1));! C) l6 k( L$ Y/ t4 n& Y& Q+ n
f=diff(p)*cos(x(1))+diff(q)*sin(x(1));1 [" f' H3 U" r/ g7 X, D1 D
Tcwh=Mh.*xh.*(v+xch.*r-zch.*p+xh.*r-zh.*f)+Mh.*yh.*(u-r.*ych+q.*zch-r.*yh+zh.*e)+....& ?( Z. `" | J% h6 W+ h
Mh.*zh.*F.*(u-r.*ych+q.*zch-r.*yh+zh.*E)+Mh.*zh.*E.*(v+r.*xch-p.*zch+r.*xh-zh.*F)-Mh.*xh.*F.*(w-q.*xch+p.*ych-E.*xh+yh.*F)...) Z0 K! O7 |- e8 H) w. a) d
-Mh.*yh.*E.*(w-q.*xch+p.*ych-E.*xh+yh.*F)...2 N& \; c9 |. T* G$ f3 e6 n7 s
+Mp.*((diff(u)-diff(r).*ych+diff(q).*zch-diff(r).*yhp+zhp.*e).*(-yhp-cos(x(2)).*yp)+(diff(v)+xch.*diff(r)-zch.*diff(p)+...- P% R3 i, P# G4 p6 h6 B( M, f
xhp.*diff(r)-zhp.*f+b.*xp-a.*zp).*(xhp+xp.*cos(x(2))+sin(x(2)).*zp)+(diff(w)-diff(q).*xch+diff(p).*ych-e.*xhp+yhp.*f-xp.*e+...' h* S! B G+ a* W" I) G1 `- }
yp^2.*sin(x(2)).*a)-((u-r.*ych+q.*zch-r.*yhp+zhp.*E-yp.*B+zp.*E).*(-(zhp+zp).*F-yp.*sin(x(2)).*E)+(v+r.*xch-p.*zch+r.*xhp-zhp.*F+...
$ H/ E4 |8 k7 X8 Y0 y ^0 f) S xp.*B-zp.*A).*(-zhp.*E+xp.*sin(x(2)).*E-zp.*cos(x(2)).*E)+(w-q.*xch+p.*ych-E.*xhp+yhp.*F-xp.*E+yp.*A)*(xhp*F+yhp*E+xp*F+yp*cos(x(2))*E)))...
8 _. |' I6 y5 ~ +Ihxz*f+Ihyz*e+Ihz*diff(r)-Ihx*E*F+Ihy*E*F+Ihxy*F^2+Ihxy*E^2-Ihxz*r*E+Ihyz*r*F-Ipx*sin(x(2))*a+Ipz*cos(x(2))*b-...8 f6 z3 g9 C% @, r+ e+ L
Ipxy*sin(x(2))*e-Ipxz*sin(x(2))^2*f+Ipxz*cos(x(2))*a+Ipyz*cos(x(2))*e-Ipx*cos(x(2))*E*A+Ipy*E*F-Ipz*A*E*sin(x(2))-...
" U. Z' F0 |* e" c8 t' h" E3 c/ y Ipxy*cos(x(2))*E^2+Ipxy*A*F-Ipxz*cos(x(2))*B*E-Ipxz*sin(x(2))*A*E+Ipyz*B*F-Ipyz*sin(x(2))*E^2;
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