电机调速仿真时,出现如下这样的错误:At time 0.02626344068700497, simulation hits (5000) consecutive zero crossings. Consecutive zero crossings will slow down the simulation. A report is shown below. You may increase the number of consecutive zero crossings allowed in the solver diagnostic controls to continue the simulation and ignore this message or disable the zero crossing detection of some of the blocks to accelerate the simulation.不知是如何造成的,如果将zero crossing control设置成disable all倒是可以进行仿真,不知这样的有何影响。