通过直流电源电压的变化，可以方便地调节定子磁链的旋转速度。
With the variations in the DC supply voltage, it is easy to alternate the input DC voltage of the converter and control the rotating speed of stator's magnetic flux.
速度调节器(52、105)确定电动机的目标旋转速度，该目标旋转速度相应于膜的预定基准输送速度。
A speed adjuster (52, 105) determines a target rotational speed of the motor corresponding to a predetermined reference transport speed of the film.
可根据所需的质量和进行按摩的鞋材来调节按摩装置的旋转速度采用消声材料，在按摩过程中噪音非常小。
Hammering device speed rotation adjustable according to the quality requirement and material to be processed. Very low noise level thanks to soundproof material cabin.
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