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題 名 | Linear Structure Control Using Modal Force Technique and Robust Linear Quadratic Gaussian Method=用模力法與強健線性二次高斯法來控制線性結構 |
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作 者 | 陳信宏; 周至宏; 趙健祥; | 書刊名 | 科技學刊 |
卷 期 | 7:3 1998.07[民87.07] |
頁 次 | 頁223-230 |
分類號 | 448.942 |
關鍵詞 | 線性結構控制; 模力法; 強健穩定性; 線性二次高斯法; Linear structure control; Modal force technique; Stability robustness; Linear quadratic gaussian method; |
語 文 | 英文(English) |
中文摘要 | 本文使用模力法來建立機械結構系統的模式,再以LQG為基礎的控制器來控制受 到時變參數擾動和干擾╱雜訊不確定性影響下的機械系統,提出一強健穩定性準則(充分條 件)來分析系統的強健穩定性。並以L型懸臂樑結構系統為例示範強健穩定性條件在振動控 制上的應用性。由數值模擬的結果可看出:當結構受到干擾輸入訊號的激發時,強健主動式 振動控制提供近似阻尼的作用以壓制頂端的振動;強健主動式振動控制提了額外的強健性, 使得受控的結構能容忍干擾╱雜訊不確定性和時變參數擾動,而不會導致系統的不穩定。 |
英文摘要 | This paper presents a robust stability criterion (sufficient condition) for a mechanical structure system, where the mechanical structure system, is modeled by the modal force technique (MFT), is controlled by a linear-quadratic-Gaussian (LQG)-based controller and subjects to both linear structured time-varying parameter perturbations and disturbance/noise uncertainties. An L- shaped cantilever beam structure system is used to illustrate the application of the proposed robust stability condition to vibration control. The numerical simulation reveals that the robust active vibration controller provides appropriate damping to suppress the tip point vibration when the structure is under disturbance input excitation, and the robust active vibration controller also provides an adequately excessive robustness such that the controlled structure could tolerate both disturbance/noise uncertainties and time-varying parameter perturbations without leading to instability. |
本系統中英文摘要資訊取自各篇刊載內容。