【摘要】：直升機(jī)由于具有垂直起降、低速飛行、起飛場地不受限制等優(yōu)點(diǎn)而被廣泛應(yīng)用于救援、運(yùn)輸?shù)让裼妙I(lǐng)域以及反潛、偵察等軍事領(lǐng)域。但其在飛行過程中由于旋轉(zhuǎn)的細(xì)長彈性槳葉工作在復(fù)雜的氣動力和離心力環(huán)境中,所以面臨嚴(yán)重的振動噪聲問題。應(yīng)用于直升機(jī)旋翼的減振方法主要有被動與主動兩種。后緣小翼智能旋翼作為旋翼振動主動控制的一種方式,具有減振效果明顯、適用頻率范圍寬等優(yōu)點(diǎn),本文選擇后緣小翼式智能旋翼進(jìn)行了分析研究。后緣小翼有多種驅(qū)動方式,其中菱形框驅(qū)動具有結(jié)構(gòu)簡單緊湊、驅(qū)動效率較高等優(yōu)勢,因此本文針對基于壓電堆的菱形框驅(qū)動機(jī)構(gòu)開展了分析與設(shè)計(jì)工作。在課題組已有的研究成果基礎(chǔ)上,引入優(yōu)化改進(jìn)的小翼二維氣動力模型,建立了后緣小翼智能旋翼氣彈耦合動力學(xué)分析模型,采用粒子群算法與粒子群-遺傳混合算法對后緣小翼控制率進(jìn)行了優(yōu)化,并對小翼的分布位置、幾何尺寸等參數(shù)進(jìn)行了分析與優(yōu)化。在此基礎(chǔ)上,開展了菱形框驅(qū)動裝置的設(shè)計(jì)與優(yōu)化工作。本文通過采用APDL參數(shù)化設(shè)計(jì)方法,對金屬及碳纖維復(fù)合材料菱形框的長度、斜壁角度和斜壁厚度等參數(shù)進(jìn)行了優(yōu)化分析,得到了驅(qū)動性能最優(yōu)的菱形框的尺寸參數(shù)。
[Abstract]:Helicopters are widely used in rescue, transportation and other civilian fields, as well as in anti-submarine, reconnaissance and other military fields because of their advantages such as vertical take-off and landing, low speed flight and unrestricted take-off site. However, during flight, the rotating slender elastic blades work in complex aerodynamic and centrifugal environments, so they face serious vibration and noise problems. There are two main methods for reducing vibration of helicopter rotor: passive and active. As an active control method of rotor vibration, the intelligent rotor with trailing edge wing has many advantages, such as obvious damping effect and wide applicable frequency range. In this paper, the intelligent rotor with rear edge wing is selected for analysis and study. There are many driving modes in the trailing edge wing, among which the diamond frame drive has the advantages of simple and compact structure and high driving efficiency. Therefore, the analysis and design work of the diamond frame drive mechanism based on piezoelectric pile is carried out in this paper. On the basis of the existing research results of the research group, an optimized two-dimensional aerodynamic model of the small wing is introduced, and the aero-elastic coupling dynamic analysis model of the intelligent rotor with the trailing edge is established. Particle swarm optimization (PSO) and particle swarm genetic algorithm (PSO) are used to optimize the control rate of the trailing wing, and the distribution position and geometric size of the wing are analyzed and optimized. On this basis, the design and optimization of the diamond frame drive device are carried out. In this paper, the APDL parametric design method is used to optimize the parameters such as the length, angle and thickness of the rhombic frame of metal and carbon fiber composites, and the dimension parameters of the rhombic frame with optimal driving performance are obtained.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：V275.1

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本文編號：2164703