求助：仿真step size怎么选？
There may be a singularity in the solution.If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)用变步长出错选用定步长的，参数改变时就会提示减少步长。该如何选取啊？回复 楼主 jianxin204 的帖子
定步长的间隔是不是设置得太小了啊？fixed_step size我最小用0.0001的
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