5自由度三極磁浮軸承系統之實驗驗證;Experimental Validation of a 5-DOF Three-pole Active Magnetic Bearing System

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Title:	5自由度三極磁浮軸承系統之實驗驗證;Experimental Validation of a 5-DOF Three-pole Active Magnetic Bearing System
Authors:	楊介仁;YANG, JIE-REN
Contributors:	機械工程系研究所
Keywords:	積分滑動模式控制;回授線性化;主動磁浮軸承;三極;5自由度;integral sliding mode control;feedback linearization;active magnetic bearing;three-pole;5-DOF
Date:	2018
Issue Date:	2019-05-23 12:52:34 (UTC+8)
Publisher:	機械工程系研究所
Abstract:	隨著科技的發展，學界和業界一直不斷致力於提高渦輪機械的可靠性和性能，例如壓縮機，主動磁浮軸承是近年來一直看漲的發展技術之一，但是由於位置感測器和功率放大器價格昂貴，因此主動磁浮軸承的整體成本很高。本文提出一個只需使用六組功率放大器的5自由度之主動磁浮軸承系統。本文中，磁力、線圈電流和氣隙之間的關係將透過實驗來鑑別，其系統模型和控制器也將根據鑑別結果進行修正。數值模擬結果顯示此系統理論上可將轉子穩定控制在平衡位置。實驗結果發現利用有效質量的觀點以解耦並分兩階段的方式也可穩定控制轉子。 There have been continual efforts by the academic and industrial communities to improve the reliability and performance of turbomachinery, such as compressors, as new technologies become available. Active magnetic bearing (AMB) is one such enhancing technology that has been gaining strong momentum in recent years. However, the overall cost of AMB is high since position sensors and power amplifiers are expensive. This paper proposes a 5-DOF AMB system using just six power amplifiers. In this study, the relationships between the magnetic force, coil current, and air gap will be identified experimentally. The system model and controller will be modified accordingly. Numerical simulation results show that the rotor can be theoretically stabilized at the equilibrium position. Experiment show that using a two stage decoupling control method with view of effective mass can also stabilize the rotor.
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