新型内摆线能量转换机构的动力学解析  

Dynamic Analysis of a New Hypocycloid Energy Transformation Mechanism

作　　者：薛运锋[1] 杜群贵[1] 朱俊鹏[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2009年第7期79-84,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50475096);广东省自然科学基金资助项目(04020084);广东省自然科学基金重点项目(05103545);广东省科技攻关项目(2004A11303003)

摘　　要：介绍了新型内摆线能量转换机构的工作原理和结构设计,采用基于能量的欧拉?拉格朗日方法推导了系统的动力学模型.基于四阶Runge-Kutta法,运用Matlab进行了仿真验证.结果表明:新型内摆线能量转换机构的活塞做完全简谐直线运动,运动更加平稳;活塞加速度峰值比传统曲柄滑块机构的小25%;在相同的气缸平均等效压力和负载转矩下,具有较高的输出转速,提高了内燃机的输出功率.The working principle and structural design of a new hypocycloid energy transformation mechanism is in- troduced, and the dynamic model of the mechanism is established using the Euler-Lagrange approach based on energy. Afterwards, a numerical simulation based on four-order Runge-Kutta＇s method is performed with Matlab. The results show that the simple-harmonic rectilinear motion of piston in the new mechanism makes the engine work more stably, that the peak acceleration in the new mechanism is 25 % less than that in the conventional slider-crank mechanism, and that the output rotational speed of the new mechanism is much higher at the same mean equivalent cylinder pressure and load torque, thus improving the output power of the engine.

关 键 词：内摆线 能量转换机构 动力学模型 简谐直线运动 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]