考慮即時濾波與衝程限制之相位控制主動調諧質量阻尼器應用於多自由度構架分析與實驗驗證

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/89002

Title:	考慮即時濾波與衝程限制之相位控制主動調諧質量阻尼器應用於多自由度構架分析與實驗驗證
Authors:	郭彥良;Kuo, Yan-Liang
Contributors:	土木工程學系
Keywords:	調諧質量阻尼器;主動控制;離散時間系統;即時控制;Power Flow理論;相位控制;即時濾波;衝程限制;振動台實驗;tuned mass damper;active control;discrete-time system;real-time control;Power Flow Theory;phase control;real-time filter;stroke limit;shaking table experiment
Date:	2022-08-18
Issue Date:	2022-10-04 10:47:19 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究分別針對考慮即時濾波(Real-Time filter)之絕對加速度回饋相位控制主動調諧質量阻尼器(Phase Control absolute Acceleration feedback-Active Tuned Mass Damper, PCA-ATMD)與PCA-ATMD導入衝程限制(stroke limit)應用於多自由度結構，進行數值模擬與實驗驗證；以結構加裝考慮即時濾波之PCA-ATMD情況進行頻率反應函數、歷時反應、系統穩定性與敏感度之分析，再以PCA-ATMD導入衝程限制情況進行歷時反應分析，探討各情況之減震效果與特性，最後以構架試體進行振動台實驗並與數值模擬結果相互驗證。相位控制主動調諧質量阻尼器(PC-ATMD)是於調諧質量阻尼器(TMD)與結構間施加控制力，能即時調整TMD之運動，使TMD與結構維持-90度相位差，此時TMD有最大Power Flow，因此減震效果最佳。未結合濾波器之系統利用Direct Output Feedback求解時，能得到最佳增益矩陣，並不代表結合濾波器之即時濾波系統在求解時，也能求得最佳增益矩陣；若直接以未結合濾波器之系統利用Direct Output Feedback求解得到最佳增益矩陣來做設計，將可能導致加裝PCA-ATMD之系統受濾波器影響而不穩定；因此本研究以即時濾波系統利用Direct Output Feedback來求得最佳增益矩陣，將能避免上述情況發生，且只需藉由改變濾波器設計參數，便能讓加裝考慮即時濾波之PCA-ATMD系統能求得解。PCA-ATMD之衝程限制是利用一與ATMD相對速度及衝程有關之函式來計算衝程限制力，如此設計之衝程限制能有效降低衝程，且不會對結構絕對加速度造成明顯負面影響。結構加裝即時濾波PCA-ATMD與PCA-ATMD導入衝程限制之模擬與實驗結果顯示，從頻率反應函數與歷時反應能看出有良好的減震效果與衝程限制效果，且濾波器的加入使實驗與模擬更加相符。由系統穩定性分析看出，系統在一定範圍內為穩定可控的，有一定之強健性；敏感度分析看出，當考慮即時濾波之PCA-ATMD增益係數或振幅比有變化，減震效果受影響並不大。;The purpose of this study is to verify the application of the Phase Control absolute Acceleration feedback-Active Tuned Mass Damper (PCA-ATMD) with real-time filter and the stroke limitation. The multiple-degree-of-freedom (MDOF) structure is implemented with the PCA-ATMD for numerical simulation and experiment, respectively. The essential of Phase Control Active Tuned Mass Damper (PC-ATMD) is to apply a control force between the TMD mass and the structure, and then the PC-ATMD can achieve 90-degree phase lag of structure to induce maximum power flow resulting in outstanding vibration reduction capability. The optimal gain matrix is obtained by solving the Direct Output Feedback using the PCA-ATMD with real-time filter system, that ensures the control system is workable. The PCA-ATMD stroke limitation force is related to ATMD relative velocity and stroke, which is not only avoiding apparently negative affect in structural absolute acceleration, but also constraining stroke effectively. The result of numerical simulations show that the PCA-ATMD with real-time filter and the stroke limitation have a good performance on structural vibration reduction and stroke limitation. Besides, the system stability and sensitivity analysis show that the system is stable and durable in a certain range of gain parameters. Hence, the active phase control algorithm is robust. Finally, the shaking table experiment is carried out by using a three-story shear building frame. And, the experiment verifies that the result is in accordance with numerical simulation. The system combined with filter makes the simulation more consistent with the experiment.
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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