• VHDL语言PWM风扇等精度测速装置的实现
    中国测试期刊

    李贵子1,2, 王  季1,2
    (1. 甘肃省机械产品检测与技术评价重点实验室,甘肃 兰州 730030; 2. 甘肃省机械科学研究院,甘肃 兰州 730030)
    摘  要:针对PWM风扇性能评价中对高精度、智能化的要求,利用VHDL语言的复杂系统可编程逻辑器件CPLD,开发一种等精度自适应小型风扇转速测量系统。该系统采用VHDL语言编写程序,选用Quartus II作为开发平台,并给出系统的软硬件方案。通过仿真试验表明:系统测量工作可靠,有良好的测量精度、灵敏度、分辨率,便于现场测试。
    关键词:VHDL语言;PWM风扇;等精度测速
    中图分类号:TM925.11;TM930.114;TP274+.2;TP302.7   文献标志码:A   文章编号:1674-5124(2013)04-0109-04
    PWM fan equal-precision speed measurement device based on VHDL language
    LI Gui-zi1,2, WANG Ji1,2
    (1. Key Laboratory of Mechanical Product Testing and Technical Evaluation,Gansu Province,
    Lanzhou 730030,China;
    2. Gansu Academy of Mechanical Sciences,Lanzhou 730030,China)
    Abstract: According to the requirements of high precision and intelligentialize in the process of PWM fan performance evaluation, complex programmable logic device CPLD of VHDL language was used to develop an equal-precision and self adaptive measurement system to measure the speed of small fan. The system use VHDL language to program, select Quartus II as the development platform with solution for hardware and software of the system. The simulation and experiment show the measurement of system is reliable and the measurement precision, sensitivity and resolution ratio are excellent. Therefore the system is convenient for field test.
    Key words: VHDL; PWM fan; precision measurement
     
     
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