共查询到20条相似文献,搜索用时 15 毫秒
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一种数字式步进电动机闭环位置控制系统设计 总被引:5,自引:2,他引:3
针对常规步进电动机驱动采用开环控制、精度不高的问题,提出了一种数字式步进闭环位置控制系统设计.给出了数学模型.设计既有闭环系统的控制精度,又有开环系统的稳定性;应用范围广,可对各种类型的数控机床实现高精度、高稳定性和优良的动态性能控制. 相似文献
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《Education, IEEE Transactions on》1981,24(1):47-50
A relatively inexpensive set of hardware, software, and experiments used in conjunction with a time-sharing computer system for the instruction of undergraduate and graduate students in computer engineering and computer science is described. The hardware is a modular computer station consisting of standard building blocks of a microcomputer system such as CPU, memory, and I/O. The software of the system is divided between that resident in the time-sharing system and that resident in the microcomputer. The microcomputer facility was designed to be inexpensive by using the capability of a time-sharing computer usually found at an academic institution. The facility has the capability of accomodating large groups of students and a variety of different microprocessors. 相似文献
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应用LonWorks技术构建一个计算机控制系统,可同时对四台PTFE成型烧结炉烧结工艺实施控制.控制算法根据系统误差及其变化率的大小自动选择通断控制、模糊控制、积分控制等控制策略.应用效果表明,系统温度控制精度达到±0.5%,可很好实现对烧结温度、烧结时间、冷却速率等烧结工艺条件的精确控制. 相似文献
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介绍了基于ST公司推出的电机控制专用芯片ST7MC的电机数字控制系统,系统中除了应用反电势法所必需的功率驱动电路、反电动势和电流反馈电路等硬件外,完全由软件算法实现了电机开环换相启动,反电势过零判断,同时在自动转换状态通过反电动势过零点软延时实现自动换相,并通过换相后延时反电动势检测达到换相软滤波的作用,从而达到整个控制系统数字化控制的目的,节省了成本,增强了系统的抗干扰能力.经调试检验本控制系统具有良好的控制性能. 相似文献
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课题对晶阐管变换器蓄电池化成电源系统及其数字化和嵌入式控制技术进行研究,设计一种具有总线接口和智能控制功能的晶阐管数字触发控制器。 相似文献
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《Education, IEEE Transactions on》1969,12(4):274-279
Instruction in the concepts as well as the design techniques of digital systems, including computers, can be considerably facilitated by demonstration. The hardware equipment required for such demonstration in a comprehensive course covering many systems and techniques may be very expensive. One solution to the cost problem is to simulate the systems to be studied using programs written for a general purpose digital computer, which normally is readily available. The instructional aids described are based on systems whose simulation programs are written in a compiler language as well as a language specifically developed for the simulation of digital systems. In summary, the design of digital systems and computers can be made more meaningful through the aid of such digital simulation programs. 相似文献
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李一峰 《电力系统及其自动化学报》1998,10(2):43-45,56
本文总结并提出了微机控制系统设计的常规方法和步骤,详细分析和阐述了微机控制系统设计的基本要求和一般步聚,并对调试和了简要介绍。 相似文献
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三电平数字化整流器控制系统设计 总被引:3,自引:1,他引:2
以数字化控制技术、功率因数校正技术、多电平变换技术三个目前电力电子技术领域的研究热点作为切入点,以TMS320LF2812为控制核心,针对一种三相三电平整流器,给出了其数字化控制方案。首先将传统的二极管箝位型三电平整流器经过适当变换,得到了一种更为实用的三电平拓扑结构。随后分析了该电路的工作原理和特点,建立了其单相数学模型,并基于TMS320LF2812给出了其控制算法流程图。最后将其应用到20kVA的UPS中。实验结果表明,该设计达到了PF>0.99,THDi<3%的良好性能。 相似文献