[求助]关于倒立摆设计的Matlab程序问题，不知错在哪里！！

[tongdongbing]

谢谢！但改了之后还是由问题！！

??? Error using ==> lti.lsim at 81
Error using ==> ltipack.ssdata.utCheckComputability at 47
When simulating the response of a linear system, the input data U must have as many
columns as system inputs.

Error in ==> lsim at 113
[yout,t1,x] = lsim(sys,u,t,x0);