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1.
 在高性能纺织机械尤其是电脑绣花机中,步进电机是广泛应用的执行部件.电脑绣花机系统中现有五相混
合式步进电机驱动器存在诸多不足之处低频转矩振荡、高频输出转矩不足和多电源供电等.在分析现有步进电机
驱动器的基础上,结合理论分析,设计出一种基于单片机的改进型五相混合式步进电机W动器.该驱动器使用单一
电源供电,采用三相励磁PWM输出方式,改善了驱动的矩频特性,在电脑绣花机系统中投人应用取得良好效果.  相似文献   

2.
电脑绣花机控制系统整体设计方案   总被引:14,自引:1,他引:13       下载免费PDF全文
 电脑绣花机是随着计算机技术、电子技术、机械加工技术的应用发展而不断发展起来的机电一体化设备.随着电脑刺绣的普及,高性能价格比的电脑绣花机越来越受到人们的青睐,此类产品的市场需求也越来越大.设计了多头多针自动剪线电脑绣花机控制系统,这种系统开发周期短,开发费用低,性能优良.给出了控制系统架构及快速实现方案.  相似文献   

3.
刘祺 《中国科技博览》2014,(19):272-272
随着计算机技术的不断发展,单片机微型计算机控制技术得到了越来越广泛的应用。社会的不断发展也是人们对周边环境安全有了越来越高的要求,这些就促使了防盗报警系统的出现。本文介绍了单片机电力在防盗报警系统中的应用,简述了这种基于单片机电路的双踪报警系统的设计方法及工作原理,重点阐述了防盗报警系统中单片机电路的概况。防盗报警系统将热释电红外探测技术和微波探测技术通过单片机的电路结合起来,实现报警系统的电路简单、成本较低、准确度高和安装方便的要求,使这种防盗报警系统得到越来越广泛的使用。  相似文献   

4.
单片机系统的应用在日常生活中已经非常普遍了,在单片机系统的具体设计中,如果因为方案有误而进行相应的开发设计,会浪费较多的时间和经费。Proteus仿真软件很好的解决了这些问题,本文主要是利用Proteus ISIS进行单片机系统的仿真,并以单片机可调数字钟作为例子,进行深入的阐述。  相似文献   

5.
徐峰 《硅谷》2010,(24):18-18
一个用电参数的采集和传递系统,介绍低压电采集系统的基本设计、硬件设计,阐述C8051F330单片机在系统中的应用。  相似文献   

6.
郑汉尚 《硅谷》2012,(15):180-180,171
系统介绍一种以单片机为设计平台的、采用软硬件结合的控制方法对系统进行设计阐述系统各模块的工作原理及调试情况,从而实现应用单片机对系统的设计。介绍系统硬件和软件的设计方法。  相似文献   

7.
王贯安 《硅谷》2014,(7):24-24,37
hT89C51单片机的交通灯控制系统由hT89C51单片机、LED显示屏、交通灯显示等组成,在交通灯功能控制的情况下,需要系统具有通行时间的设置功能,可以有效控制倒计时和急车强行。通过我国科学技术的发展,AT89C51单片机已经成功应用到很多领域中,并通过系统的设计和完善,充分体现出了AT89C51单片机的优秀性能。本系统利用AT89C51单片机为控制芯片,对交通灯的控制采用仿真实验的方法进行检测,并对实验的结果进行分析,从而实现经济、智能、简单的设计要求。  相似文献   

8.
CPLD与单片机在超压存储测试系统中的应用   总被引:2,自引:0,他引:2  
本文研究了基于复杂可编程逻辑器件(CPLD)和单片机技术的爆炸冲击波超压存储测试系统,该系统选用8bA/D转换器,由单片机和CPLD组成的双控制器对数据进行高速采样存储.设计中综合了单片机在控制、通信及使用灵活性等方面的优点和CPLD的高速性和高可靠性,以完成系统总体的设计要求.文中介绍了系统的组成以及CPLD与单片机控制模块完成的功能和设计思路,并给出时序仿真图.最后,给出了系统调试结果,证明系统设计方案的可行性.  相似文献   

9.
赵明  王春 《工业计量》2004,14(5):22-23,30
介绍了在单片机应用系统中,由于各种干扰而使程序失控时所采用的软件解决方法,包括了抗干扰、防系统“死机”两方面程序的设计思路。  相似文献   

10.
构建一个以单片机为核心的应用系统,从任务的提出到系统正式投入运行,称为单片机应用系统的开发。对目前最通用流行的单片机51系列,依照51单片机应用系统开发的基本步骤和思路,介绍单片机开发的基本知识和如何针对具体项目需求来设计解决方法及单片机一般开发过程。  相似文献   

11.
射频离解烃方法制备了适用于作软磁盘保护层的类金刚石碳膜。在基本不影响盘原有电磁特性前提下,保护膜兼备良好的耐磨、抗高温高湿和防霉等功能。  相似文献   

12.
Yong Xu  Huijun Zou  Ruiqin Li 《Sadhana》2006,31(6):661-669
Based on the fact that function-structure generating and function solving are alternant processes with mutual causality during the conceptual design phase of mechatronic systems, a conceptual design cyclic feedback solving model of a mechatronic system is put forward on the basis of mapping between function layer, effect layer, working principle layer and structure layer. The process of solving single and system functions is analysed. Key technologies of interface matching and function solving are then advanced. Finally, a computer-aided conceptual design automatic software system for mechatronic systems is developed and the conceptual design of a computerised embroidery machine is given as an example. This work was supported by the National Natural Science Foundation of China (Grant No. 50375045) and the Shanxi Natural Science Foundation of China (Grant No. 20041070).  相似文献   

13.
5.25 inch high density perpendicular magnetic recording floppy disk drive has beer developed by employing new types of high saturation magnetization ring head, Co-Cr single layer medium with Ge underlayer, head slider with ellipsoidal surface configuration to assure intimate head to medium contact, and signal equalization. By these combination, recording density D50 of 145 kFCI, peakshift of 28 % at 100 kFCI, signal to noise ratio of 40.4 dB for cut-off frequency 4.25 MHz, overwrite signal to noise ratio of 27 dB, measured by writing signals at 48 kFCI over previously written 100 kFCI signals were obtained as typical recording characteristics. These results would indicate that floppy disk drive with 100 kFCI recording density has enough system margin by above-mentioned combination. In this paper, design and performance of newly developed floppy disk drive are described.  相似文献   

14.
A new single-pole head with no auxiliary pole was developed for perpendicular magnetic recording. The head is called WSP head (W-shaped Single Pole head) because the head has a W-shaped side core which contributes to increase the recording and reproducing sensitivitiy. The head field of the new head has the same distribusion as that of an auxiliary pole head[1]. The recording and reproducing sensitivity of the head is equal to or higher than that of a ring-type video head. The head eliminates mechanical problems which prevent its application in perpendicular magnetic recording because we can locate the head on one side of the recording medium. As a possible application of the WSP head, a 3 1/2-inch flexible disk recording system was constructed. A linear recording density of the flexible disk system was 65.5 kbits/inch. This density is equivalent to 8 times that of the existing high-density 3 1/2-inch micro-floppy and 11 times that of a 5 1/4-inch floppy disk. In termes of information storage, this density gives a 4 megabyte unformated capacity on one side of a 3 1/2-inch flexible disk. The overwrite signal-to-noise ratio was greater than 30 dB and the peakshift displacement was less than 10 % at the linear dinsity of 65.5 kbits/inch.  相似文献   

15.
Recent projections by experts in computer systems and semiconductor technology indicate that in the year 2000, personal computers will have a processing speed of 100 million instructions per second and a semiconductor RAM capacity of 1 Gbyte. To work with such a system, data storage devices will need to provide more than 10 Gbytes of capacity and a data rate of 100 Mbyte/s. The advances required by magnetic and magnetooptical disk drives to meet these requirements are examined. Plausible system configurations for achieving these goals are described. A magnetic disk drive utilizing eight 3.5-in. disks on one spindle appears to be a possible configuration. Because of a larger areal density, a magnetooptical disk drive could meet the capacity requirements with only a single 3.5-in. disk. On the other hand, achieving the 100-Mbyte/s data rate and access times comparable to those of magnetic disk systems will require some technological breakthroughs. Without these breakthroughs and assuming magnetic disk progress as expected, magnetooptical disks are expected to provide many of the functions which floppy disks provide today-transfer of programs and databases between systems and economical offline storage  相似文献   

16.
The rapid advance of computerization in industrial package design has led to a strong tendency toward CAD/CAM systems using personal computers for quick design and trial manufacturing. New tools based on a database of the cushioning properties of packaging materials will be needed for the design of package cushioning. Using a compression testing machine with computer control, an attempt has been made to construct such a database with registered characteristics for 47 samples of foamed polyethylene, foamed polypropylene and foamed polyethylene-polystyrene. This database offers the following functions and is recorded on floppy disk: (i) calculation of static cushioning properties (value); (ii) print-out of the computed results; (iii) drawing characteristic figures for designing package cushioning; (iv) indicating optimum value of static cushioning properties; (v) additional registration of new samples.  相似文献   

17.
为解决整体叶盘生产过程中原位检测的问题,设计了专用的关节臂式坐标测量机.该测量机采用具有直线-直线-旋转运动的结构形式,在有限的运动空间内实现了较大范围的测量,满足了测量需求.为标定测量机直行轴与旋转轴之间的平行度误差,提出用平台和方尺作为水平面和铅垂面的实物体现的标定方法,该方法简便易行.经过标定与误差补偿,测量机的测量不确定度小于0.01 mm,符合设计要求.标定结果良好的重复性证明了该方法的正确性.  相似文献   

18.
杨蕾  张欣  胡慧  邱雁 《包装工程》2022,43(2):358-366
目的针对羌绣发展面临传承困难、创新意识淡薄、产业化程度低等问题展开研究与分析,提出基于数字化保护与产业化应用的羌绣服务设计模式,通过线上线下资源的整合和羌绣应用平台的搭建,满足绣娘与羌绣爱好者的学习、售卖需求,实现羌绣的长足发展。方法基于改进的SIFT针法图样特征提取方法进行AI针法识别、形状文法与图像拼接算法实现DIY纹样设计、定性定量的用户研究方法,分析目标群体在体验羌绣过程中的使用需求,并将其转化为羌绣服务设计平台的具体功能。梳理绣娘与羌绣爱好者的不同使用需求和流程,建立绣娘与绣友两种移动端模式,设计相应的信息架构与人机界面,最后利用改进的整体评估可用性问卷对交互原型进行评估。结论搭建了可实现羌绣数字化保护与产业化应用的羌绣服务设计系统,改变羌绣教学传承模式,提供多元化销售渠道,引入机绣完善羌绣产业化模式,实现羌绣的数字化保护与传承。  相似文献   

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