本文選題：高頻電液角振動測試臺　切入點：多目標優(yōu)化　出處：《哈爾濱工業(yè)大學》2017年碩士論文　論文類型：學位論文

【摘要】：電液角振動測試臺是標定捷聯慣性組合和進行器件角振動測試必不可少的設備。與電動角振動測試臺相比,具有出力大、抗偏載能力強和結構緊湊等優(yōu)點。隨著科技的不斷進步,低頻電液角振動測試臺已經遠遠不能滿足人們的使用需求,在這種情況下,高頻電液角振動測試臺的研究變得十分迫切。影響電液角振動測試臺頻響的因素有很多,例如液壓動力結構的設計、伺服閥的帶寬、元件的選型、振動控制算法以及軟件實現等。首先圍繞高頻電液角振動測試臺這一研究對象展開了研究,完成了電液角振動測試臺的總體方案設計以及關鍵零件與泵站的設計與選型,輸出了相關工程圖紙,針對重要零部件進行了靜力分析與模態(tài)分析。針對高頻電液角振動測試臺設備的特殊性,引入精細化的模態(tài)分析,并分析了軸承預緊力和油液彈性模量對于系統固有頻率的影響。其次比較了兩種角振動測試臺葉片軸的結構形式與特點,建立了角振動測試臺液壓固有頻率與結構諧振頻率關于葉片軸結構參數的數學模型。針對液壓固有頻率與結構諧振頻率進行了葉片軸的單目標優(yōu)化,并在單目標優(yōu)化的基礎上,建立了多目標優(yōu)化函數,然后將尋優(yōu)結果極佳的蜂群算法引入角振動測試臺葉片軸的結構參數多目標優(yōu)化中,最終優(yōu)化了葉片軸的五個結構參數。最后建立了考慮葉片軸結構柔性的角振動測試臺系統仿真模型,得出電液角振動測試臺系統的閉環(huán)Bode圖。搭建了電液角振動測試臺試驗臺,進行了系統正弦掃頻實驗,辨識出系統的閉環(huán)Bode圖,得出了角振動測試臺系統的液壓固有頻率與結構諧振頻率,驗證了前期系統方案設計與模態(tài)分析的正確性。
[Abstract]:The electro-hydraulic angular vibration test bench is an indispensable equipment for calibrating strapdown inertial assembly and for measuring the angular vibration of devices. With the development of science and technology, the low frequency electro-hydraulic angle vibration test bench is far from being able to meet the needs of people, in this case, The research of high frequency electro-hydraulic angle vibration test bench has become very urgent. There are many factors that influence the frequency response of electro-hydraulic angle vibration test table, such as the design of hydraulic power structure, the bandwidth of servo valve, the selection of components, etc. First of all, the research is carried out around the research object of high frequency electro-hydraulic angle vibration test table. The overall scheme design of the electro-hydraulic angle vibration test table and the design and selection of the key parts and pumping station are completed. According to the particularity of the equipment of high frequency electro-hydraulic angle vibration test bench, the fine modal analysis is introduced, and the relevant engineering drawings are outputted, and the static analysis and modal analysis are carried out for the important parts. The influence of bearing preloading force and oil elastic modulus on the natural frequency of the system is analyzed. Secondly, the structure and characteristics of vane shaft of two kinds of angular vibration test table are compared. The mathematical model of hydraulic inherent frequency and structural resonance frequency of angular vibration test table is established. The single objective optimization of blade shaft is carried out according to hydraulic inherent frequency and structural resonance frequency, and on the basis of single objective optimization, The multi-objective optimization function is established, and then the beecolony algorithm with excellent optimization results is introduced into the multi-objective optimization of the structural parameters of the blade shaft of the angular vibration test table. Finally, the five structural parameters of the blade shaft are optimized. Finally, the simulation model of the angular vibration test-bed system considering the flexibility of the blade shaft structure is established, and the closed-loop Bode diagram of the electro-hydraulic angular vibration test bench system is obtained. The system sinusoidal sweep experiment was carried out, the closed-loop Bode diagram of the system was identified, and the hydraulic inherent frequency and the structural resonance frequency of the angular vibration test bench system were obtained, which verified the correctness of the previous system scheme design and modal analysis.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TB534.2
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本文編號：1564177