关键词: 连续平压热压机, 驱动控制, SIMOTION

Abstract: [Objective] In order to meet the needs of continuous press technology, mechanical structure and control system for wood-based panel line, this paper made a probe into the design method for driving control system of continuous flat press based on SIMOTION D435, which would provide a new idea and project for driving control system design. [Method] Requirements and general plans of driving control system according to working process of continuous flat press and operating principle of driving system was held. This paper selected the SIMOTION D435-2DP/PN of SIEMENS as the control module and analyzed the relationships of different parts of the SIMOTION system. The hardware configuration of the system was designed based on PROFIBUS DP and the SINAMICS driving controller configuration and bus structure based on DRIVE-CLiQ. Configuration objects of axis included name and type of axis, control process, linked actuator and related encoder. The design covered modular construction of driving control procedure, control flow path, system program development and allocation of execute system. Actual operation result of the driving control system were checked on the continuous flat press line. [Result] The entire driving control system included four parts,those were, top and bottom steel belt, top and bottom chain carpet, loading conveyor and transition conveyor. It was controlled that speed of top steel belt, chain carpet, loading conveyor and transition conveyor based on velocity of bottom steel belt. The system used three PROFIBUS bus segments,those were, DP1, DP2 and Integrated DP, which were integrated in the SIMOTION. SIMOTION D435-2DP/PN included bottom steel belt and bottom chain carpet driving unit. DP1 bus included top steel belt and top chain carpet driving unit and loading conveyor and transition conveyor driving unit by using two CU320 controllers. DP2 bus made it true to exchange data with master PLC through DP/DP Coupler which included start, stop and fault reset order, reception of control information like velocity setting of each driving unit, limiting value of torque current and feedback of real-time velocity, current, torque and motor temperature for each driving unit. The technological object type of six motor axes established in the system was electrical axis. Control process was speed axis. Encoder was incremental type. The entire control program was composed of five main modules which were data transmission and process, condition monitoring, motion control function, logical control and information confirmation and system reset. [Conclusion] It was achieved that loading of each driving unit was distributed effectively by the system. The precision of velocity control was up to 1‰. The driving control system designed in this paper for continuous flat press based on SIMOTION D435 showed advantages of good development framework, convenient configuration, easily understanding of program structure, flexible implement and good visualization.

Key words: continuous flat press, driving control system, SIMOTION