ACS 5000变速驱动系统使得波音公司可以根据每个测试的规程和参数，自由设定可调速度模式或者恒速模式。

The ACS 5000 variable speed drive system enables Boeing to run the fan in adjustable speed mode or at constant speed, depending on the protocols and parameters of each test.

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为了抑制恒速旋转控制系统中的位置相关扰动，我们提出了一种非常有效的方法，它引入一种称为“位置域”的新概念。

To eliminate position dependent disturbances in a constant speed rotation system, we have proposed a very effective approach that introduces a new concept called the "position domain".

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在此基础上，提出了改进后的球形转子电场恒速控制系统的结构和动态模型。

Then, the structure and dynamic models of improved constant rotor speed control system using electric field method are proposed.

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So, the system that gets designed in order to implement the cruise control

而那个为了实现恒速控制的系统，

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