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请教关于 Lab 11e – Hall Start with Transition to FAST 的一个问题

Other Parts Discussed in Thread: TMS320F28069M

 已经用TMS320F28069M实现Lab 11e –(Hall Start with Transition to FAST),从HALL方波启动加速到无HALL的正弦波运行,电机的噪声确实明显下降。但碰到一个问题:在HALL方波启动时,负载力矩一加大电机就不能正常启动。 请问要修改哪些参数,可以提高启动力矩?谢谢