In this paper , dynamic response of parametrically excited flexible cam - follower system on universal condition is investigated by using the method of the expansion of the system equation based on chebyshev polynomials . the state vector and the periodic matrix of the system are expanded in terms of chebyshev polynomials over the principal period at first 为研究了凸轮和从动件之间的含间隙的凸轮系统模型的动力学响应，本文使用了两类谐波平衡法：解析谐波平衡法和dft数值谐波平衡法，对该系统模型进行简化。
Abstract : the paper shows the relative deformation function of the cam mechanism with a roller follower as a linear time - invariant system , and gives the detail about the response limitation for the dynamic design and modification of cam mechanisms . an example demonstrates this approach can improve the flexible cam mechanisms 文摘:以滚子从动件平面凸轮机构为分析对象，提出了相对变形函数这一新概念，并从理论上对其进行了研究，最后借助于一凸轮机构在不同参数下其摆臂最大相对变形量的数值计算过程与结果，阐述了基于该理论的凸轮机构动态设计与修改的具体实现步骤与方法。
Based on the model of microsoft open database connectivity ( odbc ) , the technology of object - orient database , and microsoft access software , the knowledge base of espdcm and the manage system of it is constructed . through studying follower motion law systematically of cam mechanism , more then twenty rules are concluded , which are the base of reasonable design for the espdcm 使用面向对象的数据库编程技术，以microsoft开放式数据连接( odbc )模型为基础，结合使用microsoftaccess数据库创建工具，创建了专家系统的知识库及知识库管理系统。通过对凸轮机构从动件运动规律的系统研究，归纳总结了二十余条从动件运动规律选择时所须遵循的规则，这些规则是本专家系统进行合理设计的基础。
Then the center ' s track equation of the circular cutter which was used to manufacture the cam was presented . for the problem of designing on combined cam mechanism which follows the given track , typical nodes in the track were selected at first . then the spline interpolation method was employed to plot the smooth track 针对实现特定轨迹的凸轮一连杆组合机构设计问题，文中首先选取轨迹上有代表性的节点，采用样条插值法绘出光滑的轨迹曲线，进而具体分析从动件的位移、类速度、类加速度，最后对凸轮-连杆组合机构进行设计。
It presents three types of friction between parts of the engine ( complete fluid friction , edge friction and half dry friction , dry friction ) and renault equation , and sets forth the friction and the lubrication of cam - driven parts , crankshaft , piston and piston ring . also it shows the forecast technique of the friction losing in designing engine 介绍了发动机零部件间的三种摩擦状态(完全液体摩擦、边界摩擦和半干摩擦及干摩擦)和雷诺方程，阐述了凸轮?从动件、曲轴、活塞及活塞环的摩擦和润滑，并给出了发动机设计时摩擦损失的预测方法。
The software can design many conventional type of cam , concluding cam - plate with middle follower , cam - plate with offset follower , cylindrical cam , dividing cylindrical cam , and cylindrical cam with space curve , etc . in forming working curves of cam - plate , used the approximation by arcs which can lessen the nodal points on curves of cam uttermostly in same error , so it reduce the computation time and relieve the chattering of principal axis . in former times , to cam mechanism , the follower only has one direction motion 本软件可以设计的凸轮类型较多，包括了对心移动从动件盘形凸轮、偏置移动从动件盘形凸轮、圆柱凸轮、圆柱分度凸轮和空间曲线柱形凸轮等，其中对盘形凸轮的工作曲线采用了难度较大的圆弧逼近算法和等误差算法，这样就可以在相同的允许误差内最大限度的减少生成曲线的节点数，减少计算时间，同时可以大大减轻加工中的振动现象。
