微分环节老出错,请高手指点
做同步电机的仿真,PI控制中老出错,错误提示:Derivative input 1 of 'xitong4/PI3/Integrator1' 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).请高手指点一下,该怎么办! 就没有人知道是怎么回事吗?:'( 修改参数值 能不能说得具体点,修改什么参数值?
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