我知道如何用几种不同的方法来优化控制器增益，但使用实体设备装置时往往会面临实际限制。

I know how to use several different methods to optimize the controller gain, but often face practical limitations on the use of physical facilities and equipment.

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主数据还可以是关于地点、实体、设备和装置的事实和关系。

Master data could also be facts and relationships of locations, entities, devices, and equipment.

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在占据实体环境的无数机器和设备中，有许多也已经具备一定的数据生成数字技术。

Many of the innumerable machines and devices that populate the physical environment also already come with some data-generating digital technology.

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