Abstract: Under the background of cloth process for a pellet plant, as to the incorrect positioning and asymmetric cloth of the plant’s cloth in cloth link, a fuzzy control algorithm based on PLC is proposed, with combining the ultrasonic level meter and feedback information of laser distance measuring instrument, which can solve the lack of cloth system effectively. The use of PC configuration interface can achieve remote monitor of cloth process to improve the automation level of this plant and the work condition. During the operation, the proposed system not only can determine material requirements of the orestorage and achieve the accurate positioning of the dumper, but also can reduce the working strength for operators.

Key words: Unloading carriage, Fuzzy control, Laser ranging, PLC；Remote monitoring

摘要：  以某球团厂破碎车间的布料过程为背景, 针对该厂布料过程中小车定位不准和布料不均匀的问题,提出了基于P L C的模糊控制算法, 结合超声波料位计和激光测距仪的反馈信息, 有效地解决了该厂布料过程中小车定位不准和布料不均匀的缺点。利用上位机组态画面实现了对布料过程的远程监控, 提高了车间的自动化水平, 改
善了操作人员的工作环境。本系统在运行期间能够准确判断矿仓的物料需求, 完成布料小车的精确定位, 降低了操作人员的工作强度。

关键词: 布料小车, 模糊控制, 激光测距, P L C, 远程监控