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HVPM_Sensored 实验问题



2019/10/29 PI+L1+0.3 电机正常运行,就是响应速度有点慢,而且噪声稍大。

                     PI+L4+LSW1+0.3 电机正常运行。

                    PI+L4+LSW2+0.3 电机启动是有碰撞声,能到达稳定速度,但在持续的20s转动中,有两次听到电机内部碰撞声音,为保护试验仪器,提前停止实验。

这是为什么啊?