[求助]一个积分环节出错，被折磨整整三天了（附模型）

[wangdong8311]

仿真后出现错误提示：
Derivative input 1 of 'TT/Integrator' at time 0 is Inf or NaN. Stopping simulation. 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)


:ft: 整整搞了三天
修改 检查 重新搭建 改参数都试过了
实在是万般无奈了
请各位高手指点一下
本人不胜感激！！