双总线架构圆纬机编织机构控制单元设计

针对圆纬机编织机构形式多样、三角及进纱路数繁多、现有控制电路复杂、驱动线路易相互干扰等问题,采用模块化设计思路,提出了一种基于CAN总线和RS485总线的双总线架构圆纬机编织机构控制单元设计方案。阐述了控制单元硬件的电路设计,重点论述了CAN总线和RS485总线多节点通讯在圆纬机编织机构控制单元的实现和应用层协议制定,并给出了CAN总线和RS485总线接口驱动程序的设计。实时性测试结果表明,双总线数据传输时间与理论值相符合,该控制单元符合圆纬机控制实时性高的要求;同时现场调试结果证明,该控制单元性能稳定可靠,抗干扰能力强,具有较好的扩展性。

Knitting mechanism controller design of circular knitting machine based on double bus architecture

Aiming at the problems of various fot~ns, multi triangles and feeders of the knitting mechanism in circular knitting machine, complexity of the existing control circuit, mutual interference in drive circuit,a design project of the knitting mechanism control module of circular knitting machine based on double bus architecture was proposed with modular design. The hardware circuit of control module, the realization of the CAN bus and RS485 bus multi-node communication and the implementation of the application layer protocols in the knitting mechanism control module of circular knitting machine, the CAN and RS485 driver were discussed. The test of instantaneity shows that the control module meets with the requirement of high instantaneity as the time of double bus data transmission is the same as the theories value. The results of the control module running indicate that it has a stable performance, anti-jamming ability and easy scalability.