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題名 | A Feasible Study of Hybrid Structural Vibration Control=混合結構振動控制之可行性分析 |
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作者姓名(中文) | 王栢村; | 書刊名 | 國立屏東技術學院學報 |
卷期 | 2 1993.06[民82.06] |
頁次 | 頁9-27 |
分類號 | 446.12 |
關鍵詞 | 樑; 振動; 阻塊; 壓電驅動器; 最小平方前饋控制; 混合主動和被動控制; 智慧型材料結構系統; Beam; Vibration; Concentrated mass; LMS feedforward control; Hybrid active and passive control; Intelligent material structure systems; |
語文 | 英文(English) |
中文摘要 | 本研究在探討樑振動之混合主動和被動控制的可行性。考慮之系統乃 是一簡支樑受協振點力之干擾激振,利用簡潔的均佈驅動器,如壓電驅動器,為 主動控制源,夾減小樑的橫向振動,並採用最小平方前饋控制方式,同時,也加 上被動控制元件之一的阻塊適當地置於樑上,因而藉著改變樑的物理性質來減小 樑之橫向振動。利用線性平方法求小值理論,可計算最佳的控制電壓,以供給壓 電驅動器,便能得到最小的成本函數,此成本函數乃是由一串加速度感應器測量 而得的加速度最小乎方和或為理想之均佈加速度感應器所測得之最小平方和。本 研究討論了主動壓電驅動器控制源以及被動控制元件阻塊在樑之振動控制效 果,結果顯示樑之振動在混合主動與被動控制是可行的。本研究提供了智慧型材 料結構系統的設計原則。 |
英文摘要 | This paper studies the feasibility of hybrid-active and passive control of beam lateral vibration. Asimply-supported beam is- considered as the plant subjected to a harmonically excited point forcedisturbance input. Compact distributed actuators, i.e., piezoelectric actuators, are applied as activecontrol forces to suppress the beam lateral vibration in conjunction with a passive control element, i.e the concentrated mass attached to the beam,, under the LMS feedforward control. The linearquadratic optimal control theory is used to obtain the optimal control voltages to be applied topiezoelectric actuators by minimizing a cost function. The cost function is defined as the sum of theleast mean square of accelerations measured by a number of accelerometers located on the beam or anideal distributed acceleration sensors over the beam. The performance of active piezoelectric actuatorand passive control element (concentrated mass) on beam vibration control is discussed. The resultsshow that the hybrid active and passive control of beam lateral vibration is convincing. This work leadsto the design of intelligent material structure systems. |
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