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| | A CNC system developed based on a micro computer platform is an important trend of the present CNC technology. The present state of CNC systems is analyzed, the possibility and necessity of developing the CNC system based on the PC platform are reported. The software and hardware structures, and work principles of the Superman CNC system based on the PC platform are discussed. Double CPUs are used to control the system, double ports RAM, parallel port interrupt and count style etc. ... | | 利用微机平台开发CNC系统是当前CNC技术发展的一个重要趋势。本文分析了国内外数控系统发展的现状和在PC平台基础上开发CNC系统的可能性及必要性;论述了基于PC平台的超人CNC系统的软、硬件结构和工作原理;阐明了前后台、多任务在系统中的实现方法;介绍了系统所达到的主要性能指标。利用双CPU计算机控制,CPU间采用双端口RAM、并口中断、计数等方式进行协调通讯是系统控制的关键。该系统软、硬件已调试成功,已投入使用,并在应用中取得了良好的效果。 | | 文摘来源 | | A fully digitalized VVVF vector-controlled system with the double 80c196KC single-chip computers used as main controllers is presented. The data's collateral communicationsare achieved by using double ports RAM IDT7130. Two hysteresis regulators are used as current regulators and double modules controller combined Bang-Bang control with PI controlas speed regulator. Experimental results show that the hardware and softeware design of thesystem is reasonable the speed adjusting c... | | 采用双80c196KC单片机作为控制单元,构成全数字化变频调速矢量控制系统。双单片机之间数据的快速并行通讯由双口RAMIDT7130来完成。系统的电流调节器采用两个电流滞环调节器,而转速调节器采用bang-bang控制与PI控制相结合的双模控制方式。实验结果表明,系统的硬件和软件设计合理,调速性能优良。 | | 文摘来源 | | This paper expounded a double CPU control device used for a transformer differential protection on fuzzy set theory. It is a high-powered micro-computer control system which consists of a single chip micro-computer 87C552, a DSP device TMS320C30, a double ports RAM IDT7132 and otherwise. The theory of fault criterion on a transformer differential protection is formed by incorporating the main point of both scalar product breaking theory and fault current mutation component theory. F... | | 介绍一种用双机CPU构成的基于模糊集理论的双绕组变压器微机差动保护装置。高性能单片机87C5 5 2和DSP器件TMS32 0C30通过双口RAM芯片IDT7132等构成一个高功效的微机控制系统。该差动保护动作判据集标积制动原理和突变量原理为一体 ,由程序适时计算修正模糊控制系数 ,可以保证在区内故障时 ,尤其是在匝间短路时具有较高的灵敏度 ,在区外故障时能可靠地不动作 | | 文摘来源 | |   | | << 更多相关文摘 |
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