Name one rate2, with the type rate, and name the other increment with the type double.

将一个命名为rate2，类型为rate，将另一个命名为increment，类型为double。

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The rate1 and rate2 variables are Rate business objects and the increment variable is a primitive double type.

rate1 和 rate2 变量是 Rate 业务对象，increment 变量是 double 基元类型。

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Double closed loop control is implemented with increment encoder through signal of speed and position.

采用增量式编码器，通过速度及位置信号进行双闭环控制。

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