本文關鍵詞：氣缸低速爬行時建模與仿真研究　出處：《哈爾濱理工大學》2012年碩士論文　論文類型：學位論文

  更多相關文章： 氣動系統(tǒng) 低速 爬行 聯(lián)合仿真 摩擦力

【摘要】：氣動技術具有高速高效、低成本、清潔安全、易維護等優(yōu)點，廣泛應用于工業(yè)生產(chǎn)中，是生產(chǎn)過程機械化和自動化的有效手段之一。隨著傳感技術、通信技術的不斷發(fā)展，對氣動系統(tǒng)低速運行時的特性有了更高的要求。計算機仿真技術在科學研究、軍事、教育、工業(yè)、交通等領域已得到大量應用，對氣動系統(tǒng)仿真模型的建立及氣缸低速摩擦力特性的研究具有十分重要的意義。 利用氣體狀態(tài)方程和熱力學方程等推導出通用的氣體流量、溫度壓力的一階微分方程。從摩擦學的角度分析摩擦力和爬行機理，結(jié)合Stribeck效應和Karnopp分段模型推導出氣缸摩擦力的數(shù)學模型，為建立氣動元件和系統(tǒng)仿真模型奠定理論基礎。 以SMC的CEP1系列單桿雙作用氣缸和SMC的VQ100系列通直動式開關閥為物理模型，在AMESim環(huán)境下建立相應的元件仿真模型，并對氣動仿真元件加以驗證。充分利用AMESim在系統(tǒng)仿真建模簡單、方便的長處，以及Matlab/Simulink數(shù)據(jù)處理能力方面的優(yōu)勢，將兩款軟件接口建立氣動系統(tǒng)聯(lián)合仿真模型。通過對仿真結(jié)的對比分析，檢驗Simulink中控制部分設計的合理性和可行性。 利用聯(lián)合仿真模型研究氣動系統(tǒng)低速運行時摩擦力特性，，觀察不同工作壓力、負載、缸徑的條件下氣缸速度波動情況和響應速度，來判斷氣缸爬行程度，總結(jié)氣缸摩擦力特性在工作壓力、負載和缸徑因素影響下的變化規(guī)律。
[Abstract]:Pneumatic technology has the advantages of high speed, high efficiency, low cost, clean and safe, easy to maintain and so on. It is widely used in industrial production and is one of the effective means of mechanization and automation of production process. With the continuous development of communication technology, the characteristics of pneumatic system running at low speed have higher requirements. Computer simulation technology has been widely used in scientific research, military, education, industry, transportation and other fields. It is of great significance to establish the simulation model of pneumatic system and to study the friction characteristics of cylinder at low speed. The general first order differential equations of gas flow rate and temperature and pressure are derived by using the gas state equation and thermodynamic equation. The friction force and creeping mechanism are analyzed from the angle of tribology. The mathematical model of cylinder friction is derived by combining the Stribeck effect and the Karnopp segment model, which lays a theoretical foundation for the establishment of pneumatic components and system simulation models. Based on the physical model of SMC CEP1 series single rod double acting cylinder and SMC VQ100 series straight-acting switch valve, the corresponding element simulation model is established in AMESim environment. And the pneumatic simulation components are verified. The advantages of AMESim in the system simulation modeling is simple and convenient, as well as the advantages of Matlab/Simulink data processing ability. The joint simulation model of pneumatic system is established by the two software interfaces, and the rationality and feasibility of the design of the control part in Simulink are verified by the comparison and analysis of the simulation results. The friction characteristics of pneumatic system at low speed are studied by using the combined simulation model, and the fluctuation and response speed of cylinder velocity under different working pressure, load and cylinder diameter are observed to judge the crawling degree of the cylinder. The variation law of cylinder friction characteristics under the influence of working pressure, load and cylinder diameter is summarized.
【學位授予單位】：哈爾濱理工大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH138.51

【引證文獻】

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