|
EDA365欢迎您登录!
您需要 登录 才可以下载或查看,没有帐号?注册
x
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:0 M; f' N6 j, q7 r7 ~% I
opt=odeset;opt.RelTol=1e-8;+ }5 j7 J- M6 ^; ~
Tmh=0;Tmp=0;Mh=4100;Ihx=4032;Ihy=3461;Ihz=4980;Ihxy=31;Ihxz=637;Ihyz=26;Mp=1500;Ipx=117;Ipy=861;
. p( K% D7 n9 C$ N# L# _Ipz=754;Ipxy=0.615;Ipxz=152;Ipyz=14.5;& a! J# j" x& S) }
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);6 a2 R% s- D3 O4 K* F
v=0;w=12*sin((pi/3)*t);
( E! R. ]) o1 P& C- Pp=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;
3 n, p- r/ o1 P+ {$ \A=p*cos(x(1))*cos(x(2))+q*sin(x(1))*cos(x(2))-r*sin(x(2));5 h, D) t" O Z9 H% a5 l
B=p*cos(x(1))*sin(x(2))+q*sin(x(1))*sin(x(2))+r*cos(x(2));: R* e* ^# k4 S) U F. I/ K8 V
E=-p*sin(x(1))+q*cos(x(1));
Y7 h) |) a8 {. a) `F=p*cos(x(1))+q*sin(x(1));
" h8 R0 a. U d9 i+ Ze=-diff(p)*sin(x(1))+diff(q)*cos(x(1));
0 _# D, v8 a( X+ ]/ N* nf=diff(p)*cos(x(1))+diff(q)*sin(x(1));
& W) Q @& i, v, `: q: mTcwh=Mh.*xh.*(v+xch.*r-zch.*p+xh.*r-zh.*f)+Mh.*yh.*(u-r.*ych+q.*zch-r.*yh+zh.*e)+...., E/ \! c& Q/ v& O2 m/ }* W
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)...7 z- J. \7 x0 H+ a* h- W
-Mh.*yh.*E.*(w-q.*xch+p.*ych-E.*xh+yh.*F)...
" p8 n `, Q7 Q6 Y +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)+...9 e4 h8 l1 ?6 Q7 [1 y b
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+...1 p4 k v/ E, J) p1 X* p8 |
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+... ! \* s o2 @4 c J0 d
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)))...
/ C1 X2 ?( S) U# j7 K' [ +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-...
! _, s; H- N! N9 o$ }1 g7 Q 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))-...
- z. B1 x3 p' A9 I& a 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;3 G1 ` K2 E4 d1 U; P1 I' o
|
|