YAN Jia-ming, LI Jing. Study of indication speed measuring system based on FPGA[J]. 2010, 29(2): 57-58+62. DOI: 10.13873/j.1000-97872010.02.005.
基于FPGA的指示空速测量系统的研究
摘要
介绍了一种基于现场可编程(逻辑)门阵列(FPGA)的指示空速测量系统的设计与实现
阐述了该测量系统的工作原理和硬件与软件设计。针对指示空速与动压的函数关系式
提出了基于插值法逼近的系统设计方案
逼近函数的相对误差小于0.1%。此外
基于FPGA的硬件平台具有很高的计算速度和准确性。测试结果表明:系统性能稳定
效率好
精度高
优于传统的测量装置。
Abstract
The design and realization of the indication speed measuring system based on field programmable gate array(FPAG)are introduced.The working principle of measuring system
the hardware design and the software design are elaborated.The function of indication speed and dynamic pressure is approximated by interpolation.The relative error of approximating function is less than 0.1 %.Besides
the platform based on FPGA has high calculation speed and accuracy.The test result shows that the measuring system has the characters of high precision
efficiency and stability than the traditional system.