ttr1281 发表于 2007-5-17 10:22

求助各位大虾！

用SIMULINK建模之后运行在MATLAB窗口出现如下提示是什么意思？
Derivative input 1 of 'meanvaluemodle/manifold air mass flow/Integrator' at time 0 is Inf or NaN.
Warning: Division by zero in 'meanvaluemodle/Math Function'.
Warning: Division by zero in 'meanvaluemodle/manifold air mass flow/Math Function'.
Warning: Division by zero in 'meanvaluemodle/manifold air mass flow/Fcn3'.
Warning: Division by zero in 'meanvaluemodle/crank shaft and loading/Math Function1'.
Warning: Result of power is undefined in 'meanvaluemodle/crank shaft and loading/Subsystem3/Math Function2'.

cdwxg 发表于 2007-5-17 15:44

你的模块里面有被0除的情况,当然该情况一般都是在开始启动的情况
请在你有除0情况的分母加个1e-3或者-4样子就可以了.

ttr1281 发表于 2007-5-18 11:50

谢谢
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