立式包装机用永磁同步电机控制系统设计

发布时间：2018-10-23 10:24

【摘要】：随着我国经济社会的快速发展、城镇化进一步推进和人民生活水平的逐步提高,包装工业得以超速发展。立式包装机械是包装设备中的典型设备。立式包装机中越来越多的采用电子凸轮代替传统的机械凸轮,不但可以节约成本,还可以加快包装速度,提高工作效率,同时增加机器的稳定性。在电子凸轮使用过程中,对速度的要求很高,必须在规定时间内到达同速区间,在同速区间之后又要进行减速,只有这样,才能充分发挥电子凸轮的作用,提高工作效率。永磁同步电机调速稳定,可靠性高。为此,本文结合实际伺服控制系统的需求和项目实践经历,以永磁同步电机为研究目标,对其中的控制技术进行研究和设计。本文首先分析了永磁同步电机的数学模型,针对立式包装机工作环境恶劣,扰动较大,会影响电子凸轮的使用,采用滑模变结构控制替代传统的PI控制,通过积分滑模面和变指数趋近律的结合,抑制滑模抖振,使永磁同步电机能准确快速响应速度变化,最大限度发挥电子凸轮的作用。采用矢量控制,在Matlab上进行控制系统仿真,仿真表明改进的滑模控制效果明显。在此基础上,进行了永磁同步电机调速系统的硬件电路设计和软件电路设计。实验表明,设计的立式包装机用永磁同步电机控制系统能实现对速度的快速调节,满足电子凸轮的使用,运行稳定可靠,且控制效果良好。
[Abstract]:With the rapid development of economy and society, urbanization and the improvement of people's living standard, packaging industry has been developed rapidly. Vertical packaging machinery is a typical equipment in packaging equipment. More and more vertical packaging machines use electronic cam instead of traditional mechanical cam, which can not only save cost, but also speed up packaging speed, improve working efficiency, and increase the stability of the machine at the same time. In the process of using electronic cam, the requirement of speed is very high, so it is necessary to reach the same speed interval within a specified time and then slow down after the same speed interval. Only in this way, can the electronic cam fully play its role and improve its working efficiency. Permanent magnet synchronous motor speed control stability, high reliability. In this paper, the control technology of permanent magnet synchronous motor (PMSM) is studied and designed according to the requirement of the actual servo control system and the practical experience of the project. In this paper, the mathematical model of permanent magnet synchronous motor (PMSM) is first analyzed. In view of the bad working environment and large disturbance of vertical packaging machine, the use of electronic cam is affected by sliding mode variable structure control instead of traditional PI control. Through the combination of integral sliding mode surface and variable exponential approach law, the chattering of sliding mode can be restrained, so that the permanent magnet synchronous motor can respond to the change of speed accurately and quickly, and play the role of electronic cam to the maximum extent. Vector control is used to simulate the control system on Matlab. The simulation results show that the improved sliding mode control is effective. On this basis, the hardware circuit design and software circuit design of PMSM speed regulation system are carried out. The experiment shows that the control system of permanent magnet synchronous motor used in vertical packaging machine can adjust the speed quickly, satisfy the use of electronic cam, run stably and reliably, and the control effect is good.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273;TM341

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