循環熱管的動態狀態空間建模與基於模型的控制設計(CS SY)

• 2020 年 1 月 19 日
• 筆記

對於航空航天、汽車或伺服器系統中電子元件的熱控制，散熱器通常遠離熱源。因此，熱傳導系統是有效冷卻電子元件所必需的。循環熱管(LHPs)就是這樣的傳熱系統，它利用蒸發和冷凝來達到比單純導熱更高的傳熱係數。LHP的工作溫度控制著電子元件的溫度，但取決於散熱量和散熱器的溫度。因此，LHP上的控制加熱器提供了在固定的設定值溫度下控制操作溫度的能力。在基於模型的控制加熱器控制器控制設計中，文獻中現有的LHP狀態空間模型關注的是設定值響應，而沒有對流體動力學進行建模。然而，流體動力學決定了LHP的擾動行為。因此,流體的動力學狀態空間模型納入一個新的LHP,這不僅能夠模擬LHP擾動下的行為變化,但也可以用於基於模型的非線性魯棒控制器的設計,實現了一種改進的控制性能比基於狀態空間模型前LHP的非線性控制器。

原文題目：Dynamic state-space modeling and model-based control design for loop heat pipes

原文：For the thermal control of electronic components in aerospace, automotive or server systems, the heat sink is often located far from the heat sources. Therefore, heat transport systems are necessary to cool the electronic components effectively. Loop heat pipes (LHPs) are such heat transport systems, which use evaporation and condensation to reach a higher heat transfer coefficient than with sole heat conduction. The operating temperature of the LHP governs the temperature of the electronic components, but depends on the amount of dissipated heat and the temperature of the heat sink. For this reason, a control heater on the LHP provides the ability to control the operating temperature at a fixed setpoint temperature. For the model-based control design of the control heater controller, the current LHP state-space model in the literature focuses on the setpoint response without modeling the fluid's dynamics. However, the fluid's dynamics determine the disturbance behavior of the LHP. Therefore, the fluid's dynamics are incorporated into a new LHP state-space model, which is not only able to simulate the LHP behavior under disturbance changes, but is also used for the model-based design of a robust nonlinear controller, which achieves an improved control performance compared to the nonlinear controller based on the previous LHP state-space model.

原文作者：Thomas Gellrich, Clara Sester, Max Okraschevski, Stefan Schwab, Hans-Joerg Bauer, Soeren Hohmann

原文地址：https://arxiv.org/abs/2001.05793