纺织印染机械多电机群变频调速同步DCS

DCS of multi-drive variable frequency adjusting speed synchronization system for weaving and dyeing machines

针对纺织、印染机械传统多电机拖动同步控制系统操作管理和使用维护都不方便以及故障率高,维修工作量大,严重影响生产的问题,论述了变频器永磁同步电机群调法、变频器电流负反馈软机械特性法和大小电机变频调速法3种变频调速同步原理和方法,研究了采用计算机通过RS-485控制总线控制变频器实现的多电机群变频调速同步新方案,为其设计了基于MCGS的集散控制系统(DCS)。该方案极大地简化了同步拖动控制系统结构,降低了设备成本,大大提高了系统的可靠性和控制管理水平。

The traditional multi-drive synchronous control system for weaving and dyeing machines has such drawbacks as inconvenient in operation and management, high fault rate, and great maintenance workload that give negative impact on production. For this reason, after studying the principles and methods of variable frequency adjusting speed synchronization of several kinds of multi-drive system, a new scheme using the RS- 485 control bus to realize multi-drive variable frequency adjusting speed synchronization system is proposed and the DCS which is based on MCGS are designed for it. The results indicate that the structure of synchronization drive control system is simplified greatly, the equipment costs are reduced and the reliability and management level are improved significantly.