液压支架电液控制系统通信调度策略研究  

Communication scheduling strategy of control system for hydraulic support electro-hydraulic based on EDF

作　　者：王培恩 霍鹏飞 田慕琴[1,2] 郑文强 宋单阳 宋建成[1,2] WANG Peien;HUO Pengfei;TIAN Muqin;ZENG Wenqiang;SONG Danyang;SONG Jiancheng(National and Provincial Joint Engineering Laboratory of Mining Intelligent Electrical Apparatus Technology,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Key Laboratory of Mining Electrical Equipment and Intelligent Control,Taiyuan University of Technology,Taiyuan 30024,China;Shanxi Keda Automation Co.,Ltd.,Taiyuan 030024,China)

机构地区：[1]太原理工大学矿用智能电器技术国家地方联合工程实验室,山西太原030024 [2]太原理工大学煤矿电气设备与智能控制山西省重点实验室,山西太原030024 [3]山西科达自控股份有限公司,山西太原030024

出　　处：《煤炭工程》2023年第2期146-151,共6页Coal Engineering

基　　金：山西省重点研发项目“无线高可靠性综采工作面控制系统关键技术研究”(202102010101005)。

摘　　要：随着液压支架电液控制系统智能化进程不断推进,基于CAN总线的电液控制系统通信数据量越来越大,总线数据冲突增多,高优先级节点占据总线控制权,造成了低优先级节点持续发送失败的饥饿现象,严重影响通信实时性,阻碍其智能化进程,甚至威胁工作面安全工作生产。针对这种现象,对液压支架电液控制通信系统进行了详细的分析,结合系统结构和信息特点对CAN标识符和动态调度算法进行设计,提出了基于EDF(Earliest Deadline First)的总线动态调度策略,通过实验验证,该动态调度策略能够极大改善节点饥饿现象,降低系统平均时延,提高系统的实时性,为实现自动化无人值守工作面打好基础。As hydraulic support electro-hydraulic control system of intelligent processes steadily, communication data scale of the system based on CAN bus is getting larger, the bus data conflicts increase, high-priority nodes take bus control, and the low priority nodes continue to send failure of hunger, which seriously influence the real-time communication, and hinder its intelligent process, even threaten the safety of working face production. Aiming at this phenomenon, the hydraulic support electro-hydraulic control communication system is analyzed in detail, CAN identifier and dynamic scheduling algorithm are designed based on the system structure and information characteristics, and a bus dynamic scheduling strategy based on EDF(Earliest Deadline First) is proposed. The dynamic scheduling strategy can greatly alleviate the node hunger phenomenon, reduce the average delay, improve the real-time performance of the system, and lay a good foundation for the automatic unattended working face.

关 键 词：CAN总线 电液控制系统 液压支架 动态调度策略 

分 类 号：TD355.4[矿业工程—矿井建设]