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程序每次遇到一个符号矩阵求逆的时候都会卡,显示matlab 正busy着呢,怎么样可以改善这个现象,加快运算速度呢?程序在之前已经给矩阵都设定了存储空间了。
M=
1.0e+004 *
1.0800 0 0 0 0 0 0 0
0 3.4101 0 0 0 0 0 0
0 0 0.0080 0 0 0 0 0
0 0 0 0.0080 0 0 0 0
0 0 0 0 0.0080 0 0 0
0 0 0 0 0 0.0080 0 0
0 0 0 0 0 0 0.0080 0
0 0 0 0 0 0 0 0.0080
K=K =
1.0e+006 *
1.7055 -0.5260 -0.2842 -0.2842 -0.2842 -0.2842 -0.2842 -0.2842
-0.5260 4.1428 -0.5513 -0.2954 -0.0368 0.2190 0.4760 0.7145
-0.2842 -0.5513 1.1242 0 0 0 0 0
-0.2842 -0.2954 0 1.1242 0 0 0 0
-0.2842 -0.0368 0 0 1.1242 0 0 0
-0.2842 0.2190 0 0 0 1.1242 0 0
-0.2842 0.4760 0 0 0 0 1.1242 0
-0.2842 0.7145 0 0 0 0 0 1.1242
C=[ (4663193830682809*ksi)/8589934592, -(43148532515308031677*ksi)/257698037760000, -(4663193830682809*ksi)/51539607552, -(4663193830682809*ksi)/51539607552, -(4663193830682809*ksi)/51539607552, -(4663193830682809*ksi)/51539607552, -(4663193830682809*ksi)/51539607552, -(4663193830682809*ksi)/51539607552]
[ -(43148532515308031677*ksi)/257698037760000, (19130300762153264699516231621423*ksi)/14507109835375550096474112, -(45218990576131198873*ksi)/257698037760000, -(24234618338058558373*ksi)/257698037760000, -(3017086408451777423*ksi)/257698037760000, (17967285829620863077*ksi)/257698037760000, (13014973981435719919*ksi)/85899345920000, (7325877508002692939*ksi)/32212254720000]
[ -(4663193830682809*ksi)/51539607552, -(45218990576131198873*ksi)/257698037760000, (4663193830682809*ksi)/51539607552, 0, 0, 0, 0, 0]
[ -(4663193830682809*ksi)/51539607552, -(24234618338058558373*ksi)/257698037760000, 0, (4663193830682809*ksi)/51539607552, 0, 0, 0, 0]
[ -(4663193830682809*ksi)/51539607552, -(3017086408451777423*ksi)/257698037760000, 0, 0, (4663193830682809*ksi)/51539607552, 0, 0, 0]
[ -(4663193830682809*ksi)/51539607552, (17967285829620863077*ksi)/257698037760000, 0, 0, 0, (4663193830682809*ksi)/51539607552, 0, 0]
[ -(4663193830682809*ksi)/51539607552, (13014973981435719919*ksi)/85899345920000, 0, 0, 0, 0, (4663193830682809*ksi)/51539607552, 0]
[ -(4663193830682809*ksi)/51539607552, (7325877508002692939*ksi)/32212254720000, 0, 0, 0, 0, 0, (4663193830682809*ksi)/51539607552]
B=i*w*C-w^2*M+K;
A =
1.0e+005 *
0
0
8.4000
4.4115 - 7.1484i
-3.8511 - 7.4652i
-8.3753 - 0.6433i
-4.9152 + 6.8118i
2.6729 + 7.9634i
Hw=inv(B)*A;
就是在最后一行的时候,matlab运行的无与伦比的慢,并且运行结果是错的,如果把最后一行程序改为Hw=B\A,那么就根本运行不出来
求助各位大侠,怎样修改这个程序,可以准确无误的求出Hw?? |