论文标题
反馈控制的有力成本
Energetic cost of feedback control
论文作者
论文摘要
小型系统的成功反馈控制允许对热波动的纠正，将其转化为有用的能量。但是，控制本身需要工作。本文强调了控制器是与反馈控制系统相互作用的物理实体的事实。对于专门设计的控制器类别，由于时间尺度的分离，相互交互作用变为非注销，这大大简化了情况。我们介绍了一个最小耗散的控制器模型，以简单的示例说明了发现。我们发现运行控制器所需的工作必须至少补偿由于控制操作而导致的熵减少。
Successful feedback control of small systems allows for the rectification of thermal fluctuations, converting them into useful energy; however, control itself requires work. This paper emphasizes the fact that the controller is a physical entity interacting with the feedback-controlled system. For a specifically designed class of controllers, reciprocal interactions become nonreciprocal due to large timescale separation, which considerably simplifies the situation. We introduce a minimally dissipative controller model, illustrating the findings using a simple example. We find that the work required to run the controller must at least compensate for the decrease in entropy due to the control operation.
