Programmable logic controller is a new type of industrial control devices based on microprocessor,which is developed with the help of computer and communication technologies.Gear oil filling machine is kind of compara...Programmable logic controller is a new type of industrial control devices based on microprocessor,which is developed with the help of computer and communication technologies.Gear oil filling machine is kind of comparatively precise non-standard filling equip ment,which uses high-precision quantitative cylinder to add gear oil into the automobile gearbox through the pipeline.展开更多
Motion controller plays a dominant role in motion control system. With the progress and improvement of motion control technology, the research and application of open, high-performance, low-cost and universal embedded...Motion controller plays a dominant role in motion control system. With the progress and improvement of motion control technology, the research and application of open, high-performance, low-cost and universal embedded motion controller becomes the necessity of the market. The major objective of the paper is to establish the basic software and hardware platform of a high-performance, low-cost and universal embedded motion controller and study the application. And the paper proposes the idea of developing a low-cost and economic touchscreen motion controller, which provides valuable reference for the relevant research and development in China.展开更多
This paper presents the composition, control scheme and signal processing method of frequency conversion motor speed testing system based on $7-200 PLC, and design the hardware circuit, the trapezoidal chart procedure...This paper presents the composition, control scheme and signal processing method of frequency conversion motor speed testing system based on $7-200 PLC, and design the hardware circuit, the trapezoidal chart procedure and touch screen display program. The debugging test shows that the system is simple, practical, and related design work has laid the foundation for the future.展开更多
Airborne communication terminal is a key unit in Ad hoc network of aircrafts. This paper mainly focuses on its implementation by embedded system, which is based on Samsung S3C2410 chip. System architecture, Linux tail...Airborne communication terminal is a key unit in Ad hoc network of aircrafts. This paper mainly focuses on its implementation by embedded system, which is based on Samsung S3C2410 chip. System architecture, Linux tailoring and touch-screen driver design are discussed in detail. Considering the requirements of stability and efficiency of the operating system, dynamic driver-loading method was employed firstly and only the necessary library files were transplanted to assist and test. The drivers finally were directly put into kernel configuration and then an integrated kernel was transplanted. Regarding to the problem of positioning issues on touch-screen, which is implemented in this system, an accurate positioning method is also presented.展开更多
Based on the control requirements of artificial grass tufting machine,an overall plan is proposed on control of CANopen bus.In the control system,on the basis of CoDeSys soft PLC technology of fieldbus control system,...Based on the control requirements of artificial grass tufting machine,an overall plan is proposed on control of CANopen bus.In the control system,on the basis of CoDeSys soft PLC technology of fieldbus control system,LMC20 realizes the communication by making CANopen bus connect with ATV71,OTB module and these underlying slave stations.The humanized operation interface is realized by touch screens and user-friendly application which is developed through CoDeSys,and detailed analysis of the monitor system and the principle and method of monitor system are also provided in the paper.展开更多
以FPGA/Cyclone II-EP2C8Q208芯片为核心,采用12 bit AD7920作为DAC,由带触摸屏的256色5.7英寸CSTN彩色液晶屏、快捷键等组成人机交互界面的硬件平台,Delphi7.0与USB1.1完成上位机图形操作界面通信,在ARM/S3C44B0X的控制下,实现基于DDS...以FPGA/Cyclone II-EP2C8Q208芯片为核心,采用12 bit AD7920作为DAC,由带触摸屏的256色5.7英寸CSTN彩色液晶屏、快捷键等组成人机交互界面的硬件平台,Delphi7.0与USB1.1完成上位机图形操作界面通信,在ARM/S3C44B0X的控制下,实现基于DDS的单通道便携式任意信号发生器。除了可产生±10 V/0.01 Hz^30 MHz的正弦波等常规波形外,还能输出数码流、调制信号、随机噪声、扫频信号等,特别是时域或频域的自定义波形,而且信号参数均是步进在线可调。实验表明该设计有效,在介绍系统设计思想的同时,还重点讲述系统FPGA与软件以及自定义波形设计等。展开更多
介绍了一种应用于医用重离子治疗装置(Heavy Ion Medical Machine,HIMM)的数字电源触摸屏控制系统,该设计采用PIC24单片机驱动触摸屏。依照电源系统的内部协议,实现了电源触摸屏控制系统的开关机控制、波形显示、状态显示以及参数设定...介绍了一种应用于医用重离子治疗装置(Heavy Ion Medical Machine,HIMM)的数字电源触摸屏控制系统,该设计采用PIC24单片机驱动触摸屏。依照电源系统的内部协议,实现了电源触摸屏控制系统的开关机控制、波形显示、状态显示以及参数设定等多种功能。该系统与电源核心数控板、状态板通讯测试正常稳定,本地操作更加方便、美观,比模拟控制方式稳定可靠,控制精度更高。展开更多
文摘Programmable logic controller is a new type of industrial control devices based on microprocessor,which is developed with the help of computer and communication technologies.Gear oil filling machine is kind of comparatively precise non-standard filling equip ment,which uses high-precision quantitative cylinder to add gear oil into the automobile gearbox through the pipeline.
文摘Motion controller plays a dominant role in motion control system. With the progress and improvement of motion control technology, the research and application of open, high-performance, low-cost and universal embedded motion controller becomes the necessity of the market. The major objective of the paper is to establish the basic software and hardware platform of a high-performance, low-cost and universal embedded motion controller and study the application. And the paper proposes the idea of developing a low-cost and economic touchscreen motion controller, which provides valuable reference for the relevant research and development in China.
文摘This paper presents the composition, control scheme and signal processing method of frequency conversion motor speed testing system based on $7-200 PLC, and design the hardware circuit, the trapezoidal chart procedure and touch screen display program. The debugging test shows that the system is simple, practical, and related design work has laid the foundation for the future.
文摘Airborne communication terminal is a key unit in Ad hoc network of aircrafts. This paper mainly focuses on its implementation by embedded system, which is based on Samsung S3C2410 chip. System architecture, Linux tailoring and touch-screen driver design are discussed in detail. Considering the requirements of stability and efficiency of the operating system, dynamic driver-loading method was employed firstly and only the necessary library files were transplanted to assist and test. The drivers finally were directly put into kernel configuration and then an integrated kernel was transplanted. Regarding to the problem of positioning issues on touch-screen, which is implemented in this system, an accurate positioning method is also presented.
文摘Based on the control requirements of artificial grass tufting machine,an overall plan is proposed on control of CANopen bus.In the control system,on the basis of CoDeSys soft PLC technology of fieldbus control system,LMC20 realizes the communication by making CANopen bus connect with ATV71,OTB module and these underlying slave stations.The humanized operation interface is realized by touch screens and user-friendly application which is developed through CoDeSys,and detailed analysis of the monitor system and the principle and method of monitor system are also provided in the paper.
文摘介绍了一种应用于医用重离子治疗装置(Heavy Ion Medical Machine,HIMM)的数字电源触摸屏控制系统,该设计采用PIC24单片机驱动触摸屏。依照电源系统的内部协议,实现了电源触摸屏控制系统的开关机控制、波形显示、状态显示以及参数设定等多种功能。该系统与电源核心数控板、状态板通讯测试正常稳定,本地操作更加方便、美观,比模拟控制方式稳定可靠,控制精度更高。
