本文選題：超磁致伸縮　切入點(diǎn)：液壓泵　出處：《哈爾濱工業(yè)大學(xué)》2015年碩士論文

【摘要】：隨著航空技術(shù)的發(fā)展,人們對傳統(tǒng)布局方式的飛行器提出了越來越多的新要求。國內(nèi)外的研究人員已經(jīng)開始逐步探索研發(fā)具有結(jié)構(gòu)自適應(yīng)性的新概念飛行器,使飛行器按照不同任務(wù)載荷的要求能夠在不同飛行環(huán)境下,通過結(jié)構(gòu)變形始終保持良好的氣動(dòng)性能和飛行狀態(tài),由此,變體飛行器應(yīng)運(yùn)而生。折疊機(jī)翼變體飛行器作為一種大變形變體飛行器,其對驅(qū)動(dòng)變形的方式提出了新的更高的要求。另一方面,作為一種新型智能材料,超磁致伸縮材料以其較大的磁致伸縮應(yīng)變、大輸出應(yīng)力、快速響應(yīng)和高能量轉(zhuǎn)換效率等特點(diǎn),被越來越多的研究者所關(guān)注。以超磁致伸縮材料為動(dòng)力元件,利用上述特性而研制的許多致動(dòng)器,使得航空航天、精密加工、機(jī)器人等領(lǐng)域?qū)υO(shè)備在體積小、重量輕、易于控制等方面的諸多要求得以滿足。通過對超磁致伸縮材料的諸多優(yōu)勢加以利用,考慮將其與液壓系統(tǒng)作動(dòng)力大且傳動(dòng)可靠等優(yōu)點(diǎn)相結(jié)合,研制一種新型超磁致伸縮液壓泵驅(qū)動(dòng)器,并以此為液壓動(dòng)力單元,構(gòu)建完整的液壓系統(tǒng)設(shè)計(jì)方案,用以驅(qū)動(dòng)折疊機(jī)翼變體飛行器實(shí)現(xiàn)折疊變形,這便是本文的主要思想。首先,本文論述了基于超磁致伸縮材料的液壓泵驅(qū)動(dòng)器的工作原理,并應(yīng)用力學(xué)、材料學(xué)、電磁學(xué)和機(jī)械設(shè)計(jì)等相關(guān)理論,設(shè)計(jì)和制作了這種驅(qū)動(dòng)器,并對其性能做了全面測試,詳細(xì)分析了輸出流量和輸出壓力分別與輸入電信號電流、頻率、偏置情況以及液壓系統(tǒng)預(yù)充壓這四組參數(shù)之間的關(guān)系。其次,根據(jù)超磁致伸縮液壓泵的設(shè)計(jì)特點(diǎn)和測試結(jié)果,本文詳細(xì)設(shè)計(jì)了搖桿機(jī)構(gòu)傳動(dòng)和螺旋傳動(dòng)這兩種傳動(dòng)方式下的折疊機(jī)翼變體飛機(jī)機(jī)身和各翼段機(jī)翼結(jié)構(gòu),全面考察折疊機(jī)翼變體飛機(jī)的結(jié)構(gòu)布局方案和特點(diǎn),并建立了搖桿機(jī)構(gòu)傳動(dòng)的折疊機(jī)翼變體飛機(jī)的運(yùn)動(dòng)學(xué)模型,與CATIA數(shù)字樣機(jī)DMU運(yùn)動(dòng)分析的仿真結(jié)果相互驗(yàn)證。最后,利用ADAMS等軟件對飛機(jī)結(jié)構(gòu)模型進(jìn)行無負(fù)載條件下的動(dòng)力學(xué)仿真,得到此時(shí)滿足變形要求的驅(qū)動(dòng)力的大小;設(shè)計(jì)了以GMM泵驅(qū)動(dòng)器為動(dòng)力源的驅(qū)動(dòng)折疊變形的液壓系統(tǒng)布局方案,并以選用GMM泵測試結(jié)果的典型值與上述仿真結(jié)果進(jìn)行對比,驗(yàn)證了液壓布局方案實(shí)際應(yīng)用的可行性。
[Abstract]:With the development of aeronautical technology, more and more new requirements have been put forward for aircraft with traditional layout. Researchers at home and abroad have begun to explore and develop new concept aircraft with adaptive structure. According to the requirements of different mission loads, the aircraft can always maintain good aerodynamic performance and flight state through structural deformation in different flight environments. The folding wing variant aircraft, as a kind of large deformation variant vehicle, has put forward new and higher requirements for the mode of driving deformation. On the other hand, as a new kind of intelligent material, Giant magnetostrictive materials have attracted more and more attention due to their large magnetostrictive strain, large output stress, fast response and high energy conversion efficiency. Many actuators have been developed using the above characteristics, which make the equipments in the fields of aerospace, precision machining, robot and so on small in size and light in weight. By utilizing the advantages of giant magnetostrictive materials, we consider combining them with the advantages of high power and reliable transmission of hydraulic systems. A new type of giant magnetostrictive hydraulic pump driver is developed and used as a hydraulic power unit to construct a complete hydraulic system design scheme to drive the folding deformation of the folding wing variant aircraft. This is the main idea of this paper. In this paper, the working principle of hydraulic pump driver based on giant magnetostrictive material is discussed, and the mechanical, material, electromagnetism and mechanical design theories are applied to design and fabricate the actuator, and its performance is tested. The relationship between the output flow rate and output pressure and the input electric current, frequency, bias and pre-charging pressure of hydraulic system are analyzed in detail. Secondly, according to the design characteristics and test results of the giant magnetostrictive hydraulic pump, In this paper, the fuselage and the wing structure of each wing segment of the folding wing variant aircraft under the two transmission modes of rocker mechanism transmission and helical transmission are designed in detail, and the structural layout scheme and characteristics of the folded wing variant aircraft are comprehensively investigated. The kinematics model of the folding wing variant aircraft driven by rocker mechanism is established, and the simulation results of DMU motion analysis of CATIA digital prototype are verified. Finally, The dynamic simulation of aircraft structure model without load is carried out by using ADAMS and other software, and the magnitude of driving force to meet the requirements of deformation is obtained, and the hydraulic system layout scheme of driving folding deformation with GMM pump driver as power source is designed. The feasibility of practical application of the hydraulic layout scheme is verified by comparing the typical values of the test results of GMM pump with the simulation results mentioned above.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：V241

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