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  本文選題：虛擬樣機 + 模態(tài)分析　； 參考：《東華大學(xué)》2012年碩士論文

【摘要】：堆垛機在汽車船舶,航空航天,煙草食品,機械加工等領(lǐng)域廣泛應(yīng)用,面對物流效率及效益目標(biāo)的不斷提高,空間高層化、速度高速化和高效能化必將成為堆垛機的發(fā)展趨勢。然而我國堆垛機才剛剛起步,運行速度、起升高度等重要指標(biāo)遠(yuǎn)遠(yuǎn)落后于國外先進(jìn)水平,主要原因是傳統(tǒng)經(jīng)驗測繪設(shè)計無法解決機械動態(tài)特性上的缺陷,例如強噪音和劇烈振動。如何實現(xiàn)高速單立柱堆垛機動態(tài)設(shè)計,改進(jìn)堆垛機結(jié)構(gòu)及控制方式是國內(nèi)設(shè)計人員最為關(guān)心的問題,其中涉及到靜剛度、動剛度、高加減速能力、噪音等關(guān)鍵指標(biāo),因此開展堆垛機的動態(tài)性能研究提高其整體性能具有重要意義,主要研究工作包括以下幾個方面： 1)針對傳統(tǒng)經(jīng)驗測繪設(shè)計缺陷,提出了基于虛擬樣機技術(shù)的堆垛機動態(tài)設(shè)計方法,搭建了堆垛機動態(tài)設(shè)計集成環(huán)境,建立了堆垛機的虛擬樣機模型。 2)利用有限元技術(shù)分析計算了單立柱堆垛機的固有頻率和模態(tài)振型,并通過模態(tài)試驗對比驗證了模型的有效性。以此為基礎(chǔ),提出了變截面立柱優(yōu)化設(shè)計方案,相同材料條件下,其剛度及固有頻率分別提高6%和20%。 3)研究了堆垛機加減速運動機理,提出了一種新的雙驅(qū)動控制方法,提高了堆垛機運動的穩(wěn)定性。 4)研究并探索了集成環(huán)境下堆垛機整機結(jié)構(gòu)優(yōu)化技術(shù),并給出相應(yīng)的實例。
[Abstract]:The stacker is widely used in the fields of automobile and ship, aerospace, tobacco food, machine processing and so on. Facing the continuous improvement of logistics efficiency and benefit target, high level space, high speed and high efficiency, it will become the development trend of stacker crane. However, the stacker in our country has just started, and the important indexes such as running speed and lifting height lag far behind the advanced level of foreign countries. The main reason is that the traditional experience surveying and mapping design can not solve the defects of mechanical dynamic characteristics. For example, strong noise and violent vibration. How to realize the dynamic design of high speed single pillar stacker, improve the stacker structure and control mode is the most concerned problem for the domestic designers, including static stiffness, dynamic stiffness, high acceleration and deceleration ability, noise and so on. Therefore, it is of great significance to study the dynamic performance of stacker crane and improve its overall performance. The main research work includes the following aspects: 1) aiming at the defects of traditional empirical surveying and mapping design, a dynamic design method of stacker based on virtual prototyping technology is put forward, the integrated environment of dynamic design of stacker is built, and the virtual prototype model of stacker is established. 2) the natural frequency and modal mode of single pillar stacker are analyzed and calculated by finite element method, and the validity of the model is verified by modal test. Based on this, the optimum design scheme of column with variable cross section is put forward. Under the same material condition, the stiffness and natural frequency of column are increased by 6% and 20%, respectively. 3) the mechanism of stacker acceleration and deceleration is studied, and a new double drive control method is proposed to improve the stability of stacker motion. 4) the structure optimization technology of stacker under the integrated environment is studied and explored, and the corresponding examples are given.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH246

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