基于SOPC全相位FFT相位差测量系统设计

All phase FFT phase measurement system design based on SOPC

针对传统相位差测量系统路结构复杂、精度低的缺点,文章提出了基于SOPC全相位FFT相位差测量方法。其基本思想是,利用全相位FFT的思想,通过SOPC系统实现整个测量系统的信号处理。SOPC系统的定制主要通过软件SOPC Builder实现,文章对全相位FFT测相差的基本理论进行了推导,最后还进行了误差分析。测试结果表明,此系统的测量精度可以达到3.9×10^(-3)。

Phase measuring system for conventional road complex structure, low accuracy, the article proposed based on SOPC all phase FFT phase difference measurement method. The basic idea is to use the idea of the use of all phase FFT, SOPC system achieved through the entire measurement system signal processing. SOPC system customization achieved mainly through the SOPC Builder software, articles on all phase FFT measurements carried out away from the basic theory of derivation, and finally the error analysis. Test results show that this system of measurement accuracy can reach 3.9×10^-3.