关键词: 纺织机械, PLC与变频器, 恒速恒张力控制, 生产效率

Abstract:

In order to improve the quality of coiled material products and reduce unqualified products, produ, industry system design was carried out for textile and dyeing machines. Frequency converter, PLC and intelligent control technology such as tension controller were used to realize constant speed and constant tension control for production machinery. Frequency converter can adjust machine's linear velocity according to tightness of the fabric coil which improves the dynamic response of the system. The adoption of tension controller and tension sensor greatly improve the control precision of the system. The introduction of PLC and touch screen technology make the enterprise production process and operation greatly simplified and the labor intensity of the producers reduced. The intelligent control system  solved the previous of the pdriorart on material fracture and deformation caused by excessive tension, or problems on uneven roll caused by too small tension and so on. Actual test results show that the improved control system reduces the number of unqualified products and effectively raises production efficiency of the enterprise.

Key words: textile machinery, PLC and frequency conversion, constant speed, constant tension control, producton efficiency