Hit time invalid error message while runing in simulink

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Kyoung Ho Chong 2015-5-19

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https://ww2.mathworks.cn/matlabcentral/answers/217488-hit-time-invalid-error-message-while-runing-in-simulink

评论： Kyoung Ho Chong 2015-6-10

Hello,

Simulation while runing in simulink was stopped and the following message was occurred.

"The next hit time(-429.4967296) for variable sample time(tid=4) is invalid because it is either less than or not sufficiently greater than the current time (429.49672949999996)."

Simulation constraints are like this :

Accelerator mode
solver options : variable step, ODE23, max step 1e-7, relative tolerance 1e-3, min step size, absolute tolerance, initial step size : auto

I am looking forward to your good opinion. Thank you.

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Walter Roberson 2015-6-1

Re-reading I think the problem is the min step size, that you should set it specifically and make it 1E-8 or smaller.

Kyoung Ho Chong 2015-6-10

I tried to adjust the min step size from 1e-8 to 1e-12. But the result is not changed, still simulation is stopped at 429.xx sec. One more I've tried by changing Max step size into "auto" from previous 1e-8, but unchanged. Sorry for not giving a good result~. If you have any idea, anytime tell me. Thanks!!

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