基于降低脈動(dòng)值的自調(diào)非同軸雙輸出脈沖發(fā)生機(jī)構(gòu)的尺度綜合及優(yōu)化
發(fā)布時(shí)間：2018-11-05 09:50
【摘要】：機(jī)械工程技術(shù)發(fā)展趨勢(shì)可以概括為:綠色、智能、超常、融合和服務(wù),這也是未來(lái)機(jī)械制造業(yè)發(fā)展的走向。機(jī)構(gòu)學(xué)作為現(xiàn)代制造業(yè)的基礎(chǔ),機(jī)構(gòu)學(xué)的研究對(duì)于提高機(jī)械產(chǎn)品的自主設(shè)計(jì)、創(chuàng)新和國(guó)際競(jìng)爭(zhēng)力至關(guān)重要。機(jī)械脈動(dòng)式無(wú)級(jí)變速器是一類典型的六桿機(jī)構(gòu),新型式下研究其尺度綜合、運(yùn)動(dòng)學(xué)動(dòng)力學(xué)特征是對(duì)機(jī)構(gòu)學(xué)的重要補(bǔ)充和發(fā)展。本論文為了發(fā)揮脈動(dòng)式無(wú)級(jí)變速器的傳動(dòng)優(yōu)勢(shì),開(kāi)發(fā)具有較大功率、較高速度、運(yùn)轉(zhuǎn)較平穩(wěn)和效率較高的新機(jī)型,在前人提出非同軸雙輸出脈沖發(fā)生機(jī)構(gòu)的基礎(chǔ)上,對(duì)該機(jī)構(gòu)進(jìn)行了深入研究,以降低機(jī)構(gòu)脈動(dòng)值為目標(biāo),通過(guò)MATLAB、SIMULINK、ADAMS、ISIGHT軟件實(shí)現(xiàn)對(duì)機(jī)構(gòu)的尺度綜合、建模,仿真,對(duì)比分析以及尺寸參數(shù)優(yōu)化,得出了一套滿足性能要求的,脈動(dòng)值較低的雙輸出脈沖發(fā)生機(jī)構(gòu);最后,為了降低由于過(guò)約束影響而導(dǎo)致機(jī)構(gòu)成本的增高,提高機(jī)械系統(tǒng)的自適應(yīng)性,完成了對(duì)該機(jī)構(gòu)進(jìn)行自調(diào)性結(jié)構(gòu)設(shè)計(jì)。在研究過(guò)程中,以非同軸雙輸出脈沖發(fā)生機(jī)構(gòu)為研究對(duì)象,分析機(jī)構(gòu)的構(gòu)型和運(yùn)動(dòng)特點(diǎn),提出了等價(jià)機(jī)構(gòu)的概念;以降低機(jī)構(gòu)脈動(dòng)值為目標(biāo),從理論上對(duì)等價(jià)機(jī)構(gòu)的基本性能參數(shù)進(jìn)行了分析研究,確定了等價(jià)機(jī)構(gòu)尺度綜合需要滿足的運(yùn)動(dòng)學(xué)條件;對(duì)變桿長(zhǎng)AC、AD的分析確定可將等價(jià)機(jī)構(gòu)作為基礎(chǔ)四桿機(jī)構(gòu)進(jìn)行設(shè)計(jì),根據(jù)前面的分析對(duì)基礎(chǔ)四桿機(jī)構(gòu)的進(jìn)行尺度綜合;在前人研究基礎(chǔ)上提出新的B點(diǎn)的確定方法,從而實(shí)現(xiàn)對(duì)非同軸雙輸出脈沖發(fā)生機(jī)構(gòu)的尺度綜合。應(yīng)用SIMULINK、ADAMS建立機(jī)構(gòu)模型,通過(guò)對(duì)仿真結(jié)果進(jìn)行對(duì)比,驗(yàn)證仿真結(jié)果的正確性;利用仿真結(jié)果結(jié)合MATLAB進(jìn)行數(shù)據(jù)分析,得到了雙輸出桿的速度、加速度的變化規(guī)律,以及機(jī)構(gòu)平均輸出角速度、脈動(dòng)值及最大角加速度隨曲柄長(zhǎng)度增大而增大的變化規(guī)律,并且分析了構(gòu)件AB和BCD的各桿長(zhǎng)變化對(duì)機(jī)構(gòu)雙輸出運(yùn)動(dòng)規(guī)律的影響。另一方面,本論文利用優(yōu)化軟件ISIGHT集成ADAMS和MATLAB,進(jìn)行正交試驗(yàn)設(shè)計(jì)分析了各因子對(duì)于脈動(dòng)值的影響,從而確定機(jī)構(gòu)的有效設(shè)計(jì)空間,再利用自適應(yīng)模擬退火法對(duì)機(jī)構(gòu)進(jìn)行優(yōu)化設(shè)計(jì),有效降低了非同軸雙輸出脈動(dòng)發(fā)生機(jī)構(gòu)的脈動(dòng)值。通過(guò)“零過(guò)約束自調(diào)基本組”法完成了對(duì)非同軸雙輸出脈動(dòng)發(fā)生機(jī)構(gòu)的過(guò)約束分析與自調(diào)結(jié)構(gòu)設(shè)計(jì),通過(guò)仿真分析表明,在系統(tǒng)的輸入、輸出軸存在平行度誤差的情況下,輸出角速度的影響可以忽略不計(jì),達(dá)到了預(yù)期效果。
[Abstract]:The development trend of mechanical engineering technology can be summarized as follows: green, intelligence, superfluous, fusion and service, which is also the development trend of machinery manufacturing industry in the future. As the foundation of modern manufacturing, the research of mechanism is very important to improve the independent design, innovation and international competitiveness of mechanical products. The mechanical pulsating stepless transmission is a kind of typical six-bar mechanism. The scale synthesis is studied in the new type. The kinematics and dynamics is an important supplement and development to the mechanism. In this paper, in order to give full play to the driving advantage of pulsating stepless transmission and develop new models with large power, high speed, stable operation and high efficiency, this paper proposes a non-coaxial double-output pulse generating mechanism. In order to reduce the pulsation value of the mechanism, the mechanism is studied deeply, and the scale synthesis, modeling, simulation, contrast analysis and dimension parameter optimization of the mechanism are realized by MATLAB,SIMULINK,ADAMS,ISIGHT software. A set of double output pulse generating mechanism with low pulsation value and satisfying the performance requirement is obtained. Finally, in order to reduce the increase of mechanism cost due to over-constraint and improve the adaptability of mechanical system, the self-adjusting structure design of the mechanism is completed. In the course of the research, the concept of equivalent mechanism is put forward by analyzing the configuration and motion characteristics of the mechanism, taking the non-coaxial double-output pulse generating mechanism as the research object. With the aim of reducing the pulsation value of the mechanism, the basic performance parameters of the equivalent mechanism are analyzed and studied theoretically, and the kinematics conditions which need to be satisfied by the scale synthesis of the equivalent mechanism are determined. According to the analysis of variable rod length AC,AD, the equivalent mechanism can be designed as the basic four-bar mechanism, and the scale synthesis of the four-bar mechanism can be carried out according to the previous analysis. On the basis of previous studies, a new method of determining B-point is proposed to realize the scale synthesis of non-coaxial double-output pulse generating mechanism. The mechanism model is built by SIMULINK,ADAMS, and the simulation results are compared to verify the correctness of the simulation results. By using the simulation results and MATLAB data analysis, the variation law of the velocity and acceleration of the double output rod and the variation law of the average output angular velocity, pulsating value and maximum angular acceleration of the mechanism with the increase of the crank length are obtained. The influence of the length of AB and BCD on the double output motion of the mechanism is analyzed. On the other hand, in this paper, the influence of factors on pulsation value is analyzed by integrating ADAMS and MATLAB, with optimization software ISIGHT, so as to determine the effective design space of the mechanism. Then the adaptive simulated annealing method is used to optimize the design of the mechanism, which effectively reduces the pulsation value of the non-coaxial double-output pulsating mechanism. The over-constraint analysis and self-tuning structure design of the non-coaxial double-output pulsation generating mechanism are completed by using the "zero-crossing constraint self-tuning basic group" method. The simulation results show that the parallelism error exists in the input and output axes of the system. The effect of output angular velocity can be neglected and the expected effect is achieved.
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TH112
本文編號(hào)：2311691
[Abstract]:The development trend of mechanical engineering technology can be summarized as follows: green, intelligence, superfluous, fusion and service, which is also the development trend of machinery manufacturing industry in the future. As the foundation of modern manufacturing, the research of mechanism is very important to improve the independent design, innovation and international competitiveness of mechanical products. The mechanical pulsating stepless transmission is a kind of typical six-bar mechanism. The scale synthesis is studied in the new type. The kinematics and dynamics is an important supplement and development to the mechanism. In this paper, in order to give full play to the driving advantage of pulsating stepless transmission and develop new models with large power, high speed, stable operation and high efficiency, this paper proposes a non-coaxial double-output pulse generating mechanism. In order to reduce the pulsation value of the mechanism, the mechanism is studied deeply, and the scale synthesis, modeling, simulation, contrast analysis and dimension parameter optimization of the mechanism are realized by MATLAB,SIMULINK,ADAMS,ISIGHT software. A set of double output pulse generating mechanism with low pulsation value and satisfying the performance requirement is obtained. Finally, in order to reduce the increase of mechanism cost due to over-constraint and improve the adaptability of mechanical system, the self-adjusting structure design of the mechanism is completed. In the course of the research, the concept of equivalent mechanism is put forward by analyzing the configuration and motion characteristics of the mechanism, taking the non-coaxial double-output pulse generating mechanism as the research object. With the aim of reducing the pulsation value of the mechanism, the basic performance parameters of the equivalent mechanism are analyzed and studied theoretically, and the kinematics conditions which need to be satisfied by the scale synthesis of the equivalent mechanism are determined. According to the analysis of variable rod length AC,AD, the equivalent mechanism can be designed as the basic four-bar mechanism, and the scale synthesis of the four-bar mechanism can be carried out according to the previous analysis. On the basis of previous studies, a new method of determining B-point is proposed to realize the scale synthesis of non-coaxial double-output pulse generating mechanism. The mechanism model is built by SIMULINK,ADAMS, and the simulation results are compared to verify the correctness of the simulation results. By using the simulation results and MATLAB data analysis, the variation law of the velocity and acceleration of the double output rod and the variation law of the average output angular velocity, pulsating value and maximum angular acceleration of the mechanism with the increase of the crank length are obtained. The influence of the length of AB and BCD on the double output motion of the mechanism is analyzed. On the other hand, in this paper, the influence of factors on pulsation value is analyzed by integrating ADAMS and MATLAB, with optimization software ISIGHT, so as to determine the effective design space of the mechanism. Then the adaptive simulated annealing method is used to optimize the design of the mechanism, which effectively reduces the pulsation value of the non-coaxial double-output pulsating mechanism. The over-constraint analysis and self-tuning structure design of the non-coaxial double-output pulsation generating mechanism are completed by using the "zero-crossing constraint self-tuning basic group" method. The simulation results show that the parallelism error exists in the input and output axes of the system. The effect of output angular velocity can be neglected and the expected effect is achieved.
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TH112
【參考文獻(xiàn)】
相關(guān)期刊論文 前3條
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2 宋東;聶松輝;鄧定文;;基于SIMULINK的Zero-Max型無(wú)級(jí)變速器運(yùn)動(dòng)學(xué)仿真[J];機(jī)械設(shè)計(jì)與制造;2007年04期
3 林軍,黃茂林;基于自調(diào)的差動(dòng)雙制動(dòng)塊式超越離合器工作機(jī)理與數(shù)學(xué)模型[J];中國(guó)機(jī)械工程;2002年05期
，本文編號(hào)：2311691
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