集中控制式智能阀CAN通信环形缓冲存取技术  

Centralized Control Intelligent Valve CAN Communication Ring Buffer Access Technology

作　　者：魏列江[1] 安贞嬛 李健伟 赵保才 毛飞鸿 强彦[1,3] WEI Lie-jang;AN Zhen-huan;LI Jian-wei;ZHAO Bao-cai;MAO Fei-hong;QIANG Yan(Energy and Power Engineering College,Lanzhou University of Technology,Lanzhou,Gansu 730050;Science and Technology on Vehicle Transmission Laboratory,China North Vehicle Research Institute,Beijing 100072;Energy and Environment College,Southeast University,Nanjing,Jiangsu 211189)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]中国北方车辆研究所车辆传动重点实验室,北京100072 [3]东南大学能源与环境学院,江苏南京211189

出　　处：《液压与气动》2023年第9期15-23,共9页Chinese Hydraulics & Pneumatics

基　　金：国家重点研发计划(2020YFB2009800);甘肃省优秀研究生创新之星项目(2022CXZX-439)。

摘　　要：为实现智能工程机械中各执行机构的协同联动控制,采用整机控制器通过CAN通信网络直接控制每联多路阀的集中控制模式,阀控制器只做数据采集、收发和功率驱动。因CAN通信过程中的数据存取环节会严重影响控制性能,考虑使用整机控制器内置环形缓冲区代替传统顺序缓冲区的解决方案,检测环形缓冲区是否存在未写入数据的空白区域,将多路阀参数依次写入空白缓冲区,显著提高CAN通信数据存取的速度,降低CAN通信延时。实验表明:在CAN通信波特率为250 Kbps时,存取100个数据,整机控制器采用环形缓冲区所用的时间比顺序缓冲区缩短了43.75%,同时内存利用率远高于顺序缓冲区的最大利用率。To achieve collaborative linkage control of various executing mechanisms in intelligent engineering machinery,a complete machine controller is used to directly control the centralized control mode of each multi way valve through CAN communication network.The valve controller only performs data collection,transmission,and power drive.Due to the serious impact of data access during CAN communication on control performance,a solution that replaces traditional sequential buffers with a built-in ring buffer in the controller of the entire machine is considered to detect whether there is a blank area of unwritten data in the ring buffer.Multiple valve parameters are sequentially written to the blank buffer,significantly improving the speed of CAN communication data access and reducing CAN communication latency.The experiment shows that at a CAN communication baud rate of 250 Kbps and accessing 100 data,the time taken for the entire controller to use a ring buffer is 43.75% shorter than that of a sequential buffer,and the memory utilization rate is much higher than the maximum utilization rate of a sequential buffer.

关 键 词：智能多路阀 集中控制模式 CAN通信 环形缓冲区 通信延时 

分 类 号：TH137[机械工程—机械制造及自动化]