摘要
为实现多台无刷直流电机的远程独立控制,减少联接线缆,提高通信可靠性,设计并实现了基于CAN总线的双余度分布式控制网络。提出了适于多电机控制的时间触发型总线调度机制,降低了报文传输延时。针对CAN总线在无刷直流电机控制中易受干扰、通信错误率高的问题,分析了干扰产生的原因,从接口电路设计方面提出了共地、隔离及滤波等抗干扰措施。研究了CAN总线冗余方法。应用结果表明,该多电机分布式系统实时性好、通信稳定、冗余切换可靠。
In order to realize the long-distance independent control of muhi-BLDCM, reduce the number of ca- ble, and improve the reliability of communication, a dual-redundancy distributed control network based on CAN is designed and accomplished. A time-triggered schedule suitable for multi-motor control is also presented to reduce the message transmission delay. Regarding the problem that CAN in the BLDCM control system is sus- ceptible to interference and high error rate in communication, the analysis of the causes of interference is given and some anti-interference measures as common grounding, isolation and filtering from the interface circuit de- sign are put forward. A redundant method of CAN is also researched. The application shows that the multi- BLDCM distributed system has good real-time performance, high communication stability and reliable perform- ance of the redundant switching.
出处
《测控技术》
CSCD
北大核心
2012年第4期86-89,共4页
Measurement & Control Technology
基金
西北工业大学研究生创业种子基金资助项目(Z2011041)
