滚珠型弧面分度凸轮机构机电耦合传动性能仿真研究

发布时间：2019-01-11 14:42

【摘要】：弧面分度凸轮机构是现代制造业和机械传动机构的重要功能部件。通过改进传统弧面分度凸轮机构的凸轮滚道设计和分度盘的设计,并加入滚珠作为第三方组件,从而到达“以滚代滑”的传动结构。弧面分度凸轮机构在机械设计及加工制造方面已经取得了很大的成就,但是单纯靠改变凸轮的轮廓曲线、滚子的形状以及分度盘形状等机构机械部分不能从根本上解决传动中存在的精度问题,因此,本文通过考虑机电的因素,利用ADAMS和MATLAB软件联合仿真,通过不同的控制方式,实现弧面分度凸轮机电耦合的仿真研究。本文的主要研究内容如下： 1、参照了滚珠丝杠滚道截形的设计,提出了双圆弧凸轮滚道截形的结构设计,同时对分度盘进行了结构的改进,再加入滚珠作为第三方传动部件后,实现了弧面分度凸轮“以滚代滑”的传动结构。运用PRO/E和MATLAB软件对凸轮进行了三维的构造,并分析了影响机构压力角的主要因素,提出了改进方法。 2、在不考虑机电影响的因素下,应用ADAMS软件对滚珠型弧面分度凸轮机构进行了运动仿真,得到了输出的角加速度、速度等仿真结果,为后续的仿真结果做了初步的分析。 3、在考虑机电影响的因素下,利用ADAMS软件得到了滚珠型弧面分度凸轮机构的被控模块,通过分析永磁同步电动机的矢量控制,并建立了其数学模型,利用MATLAB/SIMULINK软件建立了永磁同步电动机的控制系统,最后把滚珠型弧面分度凸轮机构的被控模块和控制系统结合起来,实现了联合仿真。在PI控制器和模糊PI器下分别进行了仿真,通过不同的算法仿真与前面的仿真结果比较,得出在模糊PI控制器控制下,其动态性能更好。 4、对滚珠型弧面分度凸轮机构实物进行试验研究。先介绍了机构的各个参数,并得到了参数值。然后对机构进行了运动实验研究,得到了输出轴上的角加速度运动曲线,为之前的仿真结果提供了有效的试验数据,并验证了仿真的正确性。通过以上的研究,实现了滚珠型弧面分度凸轮机构的设计及机电耦合运动分析,为后续滚珠型弧面分度凸轮机构结构优化和设计奠定了理论基础。
[Abstract]:Globoidal indexing cam mechanism is an important functional part of modern manufacturing and mechanical transmission mechanism. By improving the design of the cam raceway of the traditional globoidal indexing cam mechanism and the design of the indexing plate, and adding the ball as the third party component, the transmission structure of "rolling instead of sliding" is achieved. The globoidal indexing cam mechanism has made great achievements in mechanical design and manufacturing, but simply by changing the profile of the cam, The shape of roller and the shape of indexing plate can not fundamentally solve the problem of precision in transmission. Therefore, by considering the factors of electromechanical, the paper uses ADAMS and MATLAB software to simulate, through different control methods. Simulation study on the electromechanical coupling of globoidal indexing cam. The main contents of this paper are as follows: 1. Referring to the design of ball screw raceway section, the structure design of double arc cam raceway section is put forward, and the structure of indexing plate is improved. After adding ball as the third party transmission component, the globoidal indexing cam transmission structure of "rolling instead of sliding" is realized. Using PRO/E and MATLAB software, the three-dimensional construction of cam is carried out, and the main factors influencing the pressure angle of mechanism are analyzed, and the improvement method is put forward. 2. Without considering the influence of electromechanical factors, the kinematic simulation of ball globoidal indexing cam mechanism is carried out by using ADAMS software, and the simulation results of angular acceleration and velocity are obtained. The preliminary analysis is made for the subsequent simulation results. 3. The controlled module of ball globoidal indexing cam mechanism is obtained by using ADAMS software, and the vector control of permanent magnet synchronous motor (PMSM) is analyzed, and its mathematical model is established. The control system of permanent magnet synchronous motor (PMSM) is established by using MATLAB/SIMULINK software. Finally, the controlled module and control system of ball globoidal indexing cam mechanism are combined to realize the joint simulation. The simulation is carried out under the PI controller and the fuzzy PI controller respectively. By comparing the simulation results of different algorithms with the previous simulation results, it is concluded that the dynamic performance of the controller is better under the control of the fuzzy PI controller. 4. Experimental research on ball-type globoidal indexing cam mechanism is carried out. Each parameter of the mechanism is introduced, and the parameter value is obtained. Then the kinematic experiment of the mechanism is carried out, and the angular acceleration motion curve on the output shaft is obtained, which provides effective experimental data for the previous simulation results, and verifies the correctness of the simulation. Through the above research, the design of the ball globoidal indexing cam mechanism and the analysis of its electromechanical coupling motion are realized, which lays a theoretical foundation for the structure optimization and design of the ball globoidal indexing cam mechanism.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH112.2

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