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基于虛擬樣機(jī)的智能塑殼斷路器操作機(jī)構(gòu)模糊可靠性和模糊穩(wěn)健設(shè)計(jì)技術(shù)研究

發(fā)布時(shí)間:2018-05-08 02:22

  本文選題:塑殼斷路器 + 虛擬樣機(jī); 參考:《河北工業(yè)大學(xué)》2014年博士論文


【摘要】:低壓智能塑殼斷路器是智能配電網(wǎng)中關(guān)鍵的保護(hù)電器,其可靠性直接影響著低壓智能電網(wǎng)的安全可靠運(yùn)行。操作機(jī)構(gòu)是智能塑殼斷路器的核心部件,本文以某智能塑殼斷路器操作機(jī)構(gòu)為研究對(duì)象,研究了虛擬樣機(jī)技術(shù)和模糊可靠性技術(shù)以及模糊穩(wěn)健設(shè)計(jì)技術(shù)相結(jié)合的優(yōu)化設(shè)計(jì)方法。 文中介紹了智能塑殼斷路器操作機(jī)構(gòu)的虛擬樣機(jī)剛性模型、參數(shù)化模型和柔性模型的建模方法。針對(duì)智能塑殼斷路器的異形主轉(zhuǎn)軸機(jī)械特性測(cè)試孔難于定位加工的問題,提出一種基于機(jī)器視覺技術(shù)的平面三點(diǎn)圓心定位方法。搭建了智能塑殼斷路器機(jī)械特性測(cè)試試驗(yàn)臺(tái)。驗(yàn)證了智能塑殼斷路器操作機(jī)構(gòu)虛擬樣機(jī)模型的有效性。 提出一種虛擬樣機(jī)技術(shù)與模糊可靠性技術(shù)相結(jié)合的彈簧優(yōu)化設(shè)計(jì)方法。首先利用虛擬樣機(jī)優(yōu)化操作機(jī)構(gòu)驅(qū)動(dòng)彈簧的剛度系數(shù),然后結(jié)合模糊可靠性設(shè)計(jì)技術(shù),以彈簧質(zhì)量最輕為目標(biāo)函數(shù),建立彈簧的模糊可靠性優(yōu)化數(shù)學(xué)模型,,優(yōu)化出操作機(jī)構(gòu)驅(qū)動(dòng)彈簧的具體結(jié)構(gòu)參數(shù)。 綜合考慮智能塑殼斷路器操作機(jī)構(gòu)的手動(dòng)分閘和自由脫扣兩種運(yùn)動(dòng)規(guī)律,并考慮操作機(jī)構(gòu)在設(shè)計(jì)制造和使用過程中各種模糊因素對(duì)主轉(zhuǎn)軸運(yùn)動(dòng)精度的影響,提出一種虛擬樣機(jī)技術(shù)和多目標(biāo)模糊穩(wěn)健設(shè)計(jì)技術(shù)相結(jié)合的優(yōu)化設(shè)計(jì)方法。利用該方法對(duì)智能塑殼斷路器的操作機(jī)構(gòu)進(jìn)行了優(yōu)化設(shè)計(jì),并利用ADAMS/Insight的蒙特卡羅方法對(duì)優(yōu)化結(jié)果進(jìn)行了分析。 研究表明,利用虛擬樣機(jī)技術(shù)與模糊可靠性和模糊穩(wěn)健設(shè)計(jì)技術(shù)相結(jié)合的方法,優(yōu)化設(shè)計(jì)出的智能塑殼斷路器的操作機(jī)構(gòu)體積小、分?jǐn)嗨俣瓤、且可靠性和穩(wěn)健性高,符合智能塑殼斷路器的發(fā)展趨勢(shì)。
[Abstract]:Low-voltage intelligent plastic case circuit breaker is a key protective apparatus in smart distribution network. Its reliability directly affects the safe and reliable operation of low-voltage smart grid. The operating mechanism is the core part of the intelligent plastic case circuit breaker. In this paper, the optimal design method combining the virtual prototype technology with the fuzzy reliability technology and the fuzzy robust design technology is studied with the operation mechanism of an intelligent plastic case breaker as the research object. In this paper, the virtual prototype rigid model, parametric model and flexible model of intelligent plastic case circuit breaker operating mechanism are introduced. In order to solve the problem that it is difficult to locate and process the testing holes for the mechanical characteristics of the special-shaped main shaft of the intelligent plastic case circuit breaker, a plane three-point centroid location method based on machine vision technology is proposed. An intelligent testing bench for mechanical characteristics of plastic case circuit breaker is built. The validity of the virtual prototype model of intelligent plastic case circuit breaker operating mechanism is verified. A spring optimization design method combining virtual prototype technology and fuzzy reliability technology is proposed. Firstly, the stiffness coefficient of the driving spring of the operating mechanism is optimized by using the virtual prototype, and then the mathematical model of the fuzzy reliability optimization of the spring is established with the minimum mass of the spring as the objective function and the fuzzy reliability design technology. The structure parameters of the operating mechanism drive spring are optimized. Considering two kinds of movement laws of intelligent plastic case circuit breaker operating mechanism, manual opening and free release, and considering the influence of various fuzzy factors on the movement precision of main shaft in the process of design, manufacture and use of the operation mechanism. An optimal design method combining virtual prototyping and multi-objective fuzzy robust design is proposed. The operation mechanism of intelligent plastic case circuit breaker is optimized by using this method, and the optimization results are analyzed by ADAMS/Insight Monte Carlo method. The research shows that the intelligent plastic case circuit breaker designed by using the method of combining virtual prototyping technology with fuzzy reliability and fuzzy robust design technology has the advantages of small size, fast breaking speed, high reliability and robustness. Accord with the development trend of intelligent plastic case circuit breaker.
【學(xué)位授予單位】:河北工業(yè)大學(xué)
【學(xué)位級(jí)別】:博士
【學(xué)位授予年份】:2014
【分類號(hào)】:TM561

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