If the action mode of the regulator is correctly selected according to the need of work field and the proportional integral parameters are reasonably adjusted, the regulator will work perfectly.

认为应根据现场需要，正确选择403的作用方式，并且合理调节比例与积分参数，才能使调节器处于理想的工作状态。

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So it not only achieves the real-time feedback and the regulation of speed but also eliminate the static error of speed due to the integral action of PI regulator when the system is in a steady state.

这样不仅可以做到速度的实时反馈和调整，而且由于PI调节器的积分作用，可以使系统在稳态时做到速度无静差。

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