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Sysplorer 生成FMU后相同步长调用失败，如何处理？
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发布于 2025-07-22 15:01:54
查看 1过去315天
问题现象
导出FMU时，描述文件的步长是0.001，使用fmi4pp外部库调用FMU，设置步长step(0.001)去步进运行模型，运行出错，会step error。
解决方法
原因：使用fmi4pp这个库设置步长0.001时，由于计算精度的问题，0.001是一个小于但无限趋近于0.001的值。导致fmi4pp库无法与fmu正常建立通信。
将步长设置为stepsize + DBL_EPSILON后，可仿真成功
所属专栏：Sysplorer基础平台
产品信息：Sysplorer系统建模仿真环境
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