【正文】 器．優(yōu)化設(shè)計方法在工程機械的應(yīng)用．上海：同濟大學(xué)出版社，1993[8] 羅中華，1998，增刊：27～29[9] ，2005，3:453～455[10] 李建，2011，1：7～10[11] ，2013，1：64～70[12] 吳強．JH31315機械壓力機傳動系統(tǒng)的設(shè)計．徐州工程學(xué)院學(xué)士學(xué)位論文．2008[13] 華大年，連桿機構(gòu)設(shè)計[ M]．上海：上?？茖W(xué)技術(shù)出版社，1995 [14] 濮良貴，北京：高等教育出版社，[15] 劉海彬．．2011[16] 陳立平，：清華大學(xué)出版社，[17] 齊秀麗，陳秀龍．機械原理．北京：中國電力出版社，[18] 丁淑輝，、三級（三維幾何建模與處理）Pro/:清華大學(xué)出版社，[19] 王昆，:高等教育出版社，2006[20] Radovan R..Bulatovic and Stevan R. synthesis of a path generator sixbar ，2012，1：4027～4039致謝本文是在范云霄、于濤老師的悉心指導(dǎo)下完成的。在論文的選題、研究方法、整體思路及至論文撰寫和修改的過程中都凝聚了于濤、范云霄老師無限的心血和辛勤的汗水。正是在他們悉心的啟發(fā)式指導(dǎo)下,使我對課題的認識變得越來越深刻。在學(xué)習期間，不僅感受到了指導(dǎo)老師們極好的人格魅力，也不斷地為他們的學(xué)識、工作風格、嚴謹?shù)膶W(xué)術(shù)精神所折服。在此向指導(dǎo)老師們致以深深的謝意。感謝張海淑、張克、楊文義、高明等同學(xué)的幫助和支持，愿我們的友誼長存!感謝我的父母，在我的學(xué)習和生活上傾注了心血，我的進步離不開他們的付出!最后向所有關(guān)心和幫助過我的老師和同學(xué)們表示真誠的感謝。附錄一Optimal synthesis of a path generator sixbar linkageAbstractThis paper presents the optimal dimensional synthesis of a sixbar linkage with rotational constraints in which a point on the second dyad generates the desired path. The aim of the synthesis is to bring the generated path as close to the given path as possible, the given path being a bination of a rectilinear segment and a circular arc. A large population of mechanisms is formed using the method of controlled decrease of allowed deviations and the differential evolution algorithm DE within the optimization procedure. Establishing the initial boundaries of allowed deviations “far” enough leads to significant accumulation of generated paths around the given one. The path is given by a large number of precision points. The mechanisms realizing satisfactory motion are obtained by the method of controlled decrease of allowed deviations with the application of specific adaptation of algorithm DE.Numerous working processes in machines and devices are successfully performed even when the paths of working bodies do not realize ideal shapes. It is enough that they e closer to the desired paths, ., that they are within the allowed deviations around the given paths. Since the increase in the number of members of the mechanism and the acpanying imprecision in manufacturing increase the imprecision of the path, it is necessary to be oriented towards the mechanisms with a smaller number of members. Certainly, possibilities of a mechanism with fewer members are decreased with respect to the variety of the path shape, and hence it is very important to achieve a quality synthesis so that the real motion could approach the ideal one as much as possible. However, when the “density” of distribution of generated points along the path is analyzed as the function of increment of the angle of the driving member, these mechanisms have significant “scattering.” The values of deviation of the line step length, which corresponds to the unit increment of the angle of the driving member, are indicators of the capability of possible speed control of the executive body in a given process. This scattering bees even more pronounced when the generated path is posed of a sum of several paths with simple shapes. The research in this paper is based on the optimum synthesis of a sixbar linkage with rotating kinematic pairs. The mechanism structure is obtained by adding a dyad with rotating constraints to the basic fourbar linkage. The first member of the dyad is arbitrarily connected to the coupler of the main mechanism, and the other one to the support. The path, which is a bination of a rectilinear segment and a circular arc, is generated by a point of the working member of the dyad. Motion of the executive bodies of machines and devices in practice is most frequently reduced to these two mentioned segments of motion.The synthesis in this paper was successful thanks to the application of the modified DE. Storn and Price were the first to successfully apply the DE algorithm during optimization of certain wellknown nonlinear, nondifferen tiable and nonconvex functions. They gave the working principle of DE with single scheme. Later on, they suggested ten different schemes of DE (Storn and Price. Price et very detailed explanations regarding the DE algorithm and its application in solving various unconstrained optimization problems.This paper presents the methods which, with considerable certainty, lead to the success of dimensional synthesis of mechanisms realizing the mentioned shapes of motion. Only simple shapes of allowed deviations of generated paths were used. Shapes of functions of allowed deviations, during the motion of a point of the executive body of a mechanism, can be varied. Practically, every technological process can be assigned a corresponding shape. Dordevic examined, in a detailed manner, influences of shapes of allowed deviations on the success of optimal synthesis, ., approximation to technological require ments of motion of mechanisms. Bulatovic and Dordevic considered synthesis of a fourbar linkage whose coupler point realizes motion along a rectilinear segment the length of which is. The method of constant allowed deviations of the shape function and the position function was applied. The HookeJeeves optimization method was used in the optimization and the minimum allowed deviation in the rectilinear egment of was achieved. The total number of desired points is 16 and they are uniformly distributed on that segment. Many authors have dealt with solving the problem of optimum synthesis of planar linkages, as path generators. During optimum synthesis, different requirements which should be fulfilled by the given mechanism can be included in the objective function. Also, various optimization methods based on traditional and evolution algorithms were used in the process of optimum synthesis of mechanisms. Ullah and Kota [6] solve the problem of optimum synthesis of a fourbar linkage in which the objective function is based on Fourier descriptors which is used to evaluate curve shape deviation. The search for optimal shape is carried out using a stochastic global optim