【SIGGRAPH Asia 2012专题*技术论文】物理模型：motion-guided机械玩具造型

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物理模型：motion-guided机械玩具造型

Motion-Guided Mechanical Toy Modeling



Lifeng Zhu, Weiwei Xu, John Snyder, Yang Liu, Guoping Wang, Baining Guo





摘要：

我们从运动的特点引入一个新的合成方法完全机械玩具。设计师特别fi的几何学方法和随时间变化的旋转和平移的刚性特征组成部分。我们的算法自动生成机制装配在位于箱体下方的特征的基础上产生的特别fi教育运动。零件在装配是从巴勒斯坦权力机构rameterized集包括belt-pulleys，齿轮，crank-sliders，快返回，和各种凸轮（蜗牛，椭圆，和double-ellipse）。位置这些部件和参数优化生成特别fi教育运动，尽量减少一个简单的措施的复杂性，和产生一个均匀布置在传动轴零件。我们的解决方案采用了一种特殊的初始化程序的模拟退火有效地fi搜索复杂的骗局fi形状空间为优化装配。



Abstract：We introduce a new method to synthesize mechanical toys solely from the motion of their features. The designer specifies the geometry and a time-varying rotation and translation of each rigid feature component. Our algorithm automatically generates a mechanism assembly located in a box below the feature base that produces the specified motion. Parts in the assembly are selected from a parameterized set including belt-pulleys, gears, crank-sliders, quick-returns, and various cams (snail, ellipse, and double-ellipse). Posi-tions and parameters for these parts are optimized to generate the specified motion, minimize a simple measure of complexity, and yield a well-distributed layout of parts over the driving axes. Our solution uses a special initialization procedure followed by simulat-ed annealing to efficiently search the complex configuration spacefor an optimal assembly.



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