| Whole Machine and System Design |
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| Design of control system of automatic hot stamping machine based on finite state machine model |
| WEN Xia1,2, REN Wen1,2, LAI Sen-cai1,2, ZENG Xian-jie3 |
1.Key Laboratory of Equipment Intelligence Control of Fujian Province， Sanming University， Sanming 365004， China
2.College of Mechanical and Electrical Engineering， Sanming University， Sanming 365004， China
3.Sanming Hengshun Printing Machinery Co.， Ltd.， Sanming 365001， China |
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Abstract Aiming at the problems of low automation level and poor human-machine interface interaction of current hot stamping equipment, a three-dimensional parametric design method was used to design the structure of the automatic hot stamping machine. Taking the Mitsubishi's new generation FX3GE series PLC (programmable logic controller) and the T5L smart touch screen as the core, the network control system of the automatic hot stamping machine was built, which realized the high-speed and high-precision drive of servo motor and cylinder, PID (proportion integration differentiation) temperature control and multi-parameter human-machine data interaction. Aiming at the problem that the traditional fixed-path sequential instruction programming mode could not meet the requirements of the small-batch customized production mode, a control program design method for the automatic hot stamping machine based on the finite state machine (FEM) model was proposed. Firstly, the functional planning and modular design of the automatic hot stamping process and the distribution, quantity and logical sequence of the movement stations were carried out, and a hierarchical finite state machine model was established. Secondly, according to the state transition events and state transition conditions, a state transition diagram of hot stamping action was constructed. Finally, the state transition diagram was mapped to the adjacent linked list variable space based on the idea of graph theory, and the variable configuration was used to drive the adjacent linked list, so as to complete the traversal and topology expansion of the state transition graph. The simulation results show that, compared with the traditional instruction programming model, the control program design method for the automatic hot stamping machine based on the finite state machine model not only improves the development efficiency and the configuration programming level, effectively reduces the maintenance cost of the control program, but also ensures that the sequence actions of the servo motor and the cylinder will not interfere or cross, and improves the reliability of the control system, which has broad prospects of engineering application.
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Received: 26 April 2020
Published: 25 December 2020
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基于有限状态机模型的全自动烫印机控制系统设计
针对现有烫印设备存在自动化水平低和人机界面交互性差的问题，采用三维参数化设计方法对全自动烫印机的结构进行设计，以三菱新一代FX3GE系列PLC （programmable logic controller，可编程逻辑控制器）和T5L智能触摸屏为核心搭建了全自动烫印机的网络化控制系统，实现了伺服电机与气缸的高速、高精度驱动，PID （proportion integration differentiation，比例积分微分）温度控制以及多参数人机数据交互。针对传统固定路径顺序指令编程模式无法满足小批量定制化生产模式的要求的问题，提出了基于有限状态机（finite state machine， FEM）模型的全自动烫印机控制程序设计方法。首先，对全自动烫印工艺和运动工位的分布、数量和逻辑顺序关系进行功能规划与模块化设计，建立了层次化有限状态机模型；然后，根据状态迁移事件与状态转换条件构造了烫印动作的状态转换图；最后，结合图论思想，将状态转换图映射到邻接链表变量空间，并采用变量配置方式驱动邻接链表，从而完成对状态转换图的遍历和拓扑扩展。仿真结果表明，与传统的指令编程模式相比，基于有限状态机模型的全自动烫印机控制程序设计方法不仅提升了开发效率和组态化编程水平，有效降低了控制程序的维护成本，还保证了伺服电机与气缸的时序动作不会干涉和交叉，提高了控制系统的可靠性，具有广阔的工程应用前景。
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