基于RTLinux的数控系统调度抖动的研究与补偿  

Research and compensation on scheduling jitter of CNC operation system based on RTLinux

作　　者：高海彬[1] 王清阳[1] 裴海龙[1] 

机构地区：[1]华南理工大学自动化科学与工程学院,广东广州510640

出　　处：《计算机工程与设计》2009年第12期2841-2844,共4页Computer Engineering and Design

基　　金：国家自然科学基金项目(60574004;60736024);新世纪优秀人才支持计划基金项目(NCET-04-0817);广东省科技攻关计划软件专项基金项目(2002A1040402);广州市重大科技攻关计划基金项目(2002Z1-0051);教育部重大培育基金项目(708069)

摘　　要：简单介绍操作系统与基于RTLinux的开放式数控系统,然后分析了数控系统在运行时会出现"调度抖动"的现象,指出使用原有的调度方法不能满足高精度生产加工的需要。对此,探讨了两种对于抖动的补偿方法,并将这两种方法在数控系统上实现,通过对抖动的测量,表明了MLLF调度算法在消除抖动方面效果较为理想,结果令人满意。A brief introduction is explained to the open CNC system based on RTLinux, and then the phenomenon of scheduling jitter in the process of CNC system is analyzed. It is pointed the original schedule arithmetic method can not meet the needs of production and processing which requires high accuracy. Therefore, two compensation methods is investigated for the scheduling jitter, and these two methods is realized in the CNC system. Jitter testing proved that scheduling algorithm results in a more satisfying effect on eliminating the jitter.

关 键 词：实时 RTLINUX 数控系统 调度抖动 MLLF调度算法 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]