The appearance of programmable logic devices ( PLD), such as CPLD and FPGA, makes it possible to substitute the unit by a new module using FPGA with NCO technique. 本文介绍一种采用数字控制振荡器的设计技术,利用FPGA实现调制转换基准插件功能,从而代替了原来的模拟部件,解决了设备的维护问题。
The programmable logic device of FPGA is a core controller unit of the design and it is composed of three modules: the process control course module, parameters setting and calling module and communication module. 该设计以可编程逻辑器件为核心控制部件,它由工序控制流程模块、参数设置及调用模块和通讯模块三个模块组成;
Ladder diagram is a very important language in traditional PLC ( Programmable Logic Controller) software. The design of ladder diagram language checking module will be introduced in this paper. 梯形图是传统的PLC(可编程控制器)编程软件中非常重要的语言.本文将介绍一下PLC编程软件中梯形图语言检查模块的设计。
The system hardware consists of single-chip microcomputer control system, CPLD ( Complex Programmable Logic Device), power drive module and liquid crystal display. 模拟高压断路器系统的硬件主要由单片机控制系统、复杂可编程逻辑器件CPLD(ComplexProgrammableLogicDevice)、功率驱动模块及液晶显示器等组成;
Complex Programmable Logic Device ( CPLD) is selected as core control module and meanwhile Very-High-Speed Hardware Description Language ( VHDL) is applied for system programming. 本文使用可编程逻辑器件(CPLD)作为时间同步卡的核心控制模块,使用VHDL硬件描述语言进行系统编程。
The hardware design of this system is based on a dual-processor architecture which includes a DSP and a Field Programmable Logic Device ( FPGA), and its image capturing module is based on a CMOS camera. 系统的硬件设计采用了基于DSP和现场可编程逻辑器件(FPGA)的双处理器结构和基于CMOS的图像采集。
According to the requirements of current and voltage-withstanding characteristic test in the PTCR ( Positive Temperature Coefficient Resistance) production, a kind of module using single chip microcomputer and CPLD ( Complex Programmable Logic Device) to control PTCR test have been developed. 针对PTCR热敏电阻生产中耐电压、耐电流特性测试的需要,研制了一种使用单片机和CPLD(ComplexProgrammableLogicDevice复杂可编程逻辑器件)来控制PTCR测试的模块。
By downloading profile to the programmable logic device, this dissertation accomplishes the joint debugging between the control module and whole system, and the test result shows that the module designed works normally. 通过将配置文件下载到可编程逻辑器件中,完成了控制模块与整个系统的联合调试,运行结果表明该模块工作正常,满足设计需求。
The technology of System on Programmable Chip is used in the design of the the harmonic detection system. The function of some hardware logic circuit, some software module and Nios ⅱ cpu can be designed in the FPGA. 在此系统的设计中,运用可编程片上系统SOPC的设计理念,即把部分硬件逻辑电路要完成的功能、各软件模块和NiosⅡCPU都集成在单片FPGA上实现。
The programmable logic controller ( PLC) is chose to build the lower position control system. After analyzing the need of the test, the PLC and function module are confirmed. 采用可编程控制器(PLC)作为下位机控制系统,在详细分析了实验台的控制流程和输入输出点数后,完成了PLC及功能模块的选型工作。