<P>我的程序大意是描述状态空间的阶跃响应的图形:<BR>[y,t]=step(feedback(MotorSS,1));<BR>plot(t,y,'k-');<BR>xlabel('Time(s)');<BR>ylabel('Rotor angle\thet(t))(radians)');<BR>系统提示错误是:<BR>??? Error using ==> ltipack.ssdata.utCheckComputability<BR>Not supported for models with complex data.</P>
<P>Error in ==>soya at 1<BR>[y,t]=step(feedback(MotorSS,1));</P>[em06]