摘要
设计了基于电能高精度计量芯片的快速三相谐波分析仪。分析仪采用嵌入式结构,使用安全管理平台技术,以STM32处理器为核心,通过地址/数据总线搭载专用电能计量芯片ATT7022D。分析仪利用硬件ADC缓存功能实现电量数据的快速采集;STM32处理器内置专用的FFT算法进行谐波分析,其产生的频谱泄漏和栅栏效应则采用拉格朗日三次插值算法进行了修正。应用结果表明:分析仪测量精度高、处理速度快、可靠性高。
The rapid three-phase harmonic analyzer based on high-precision energy metering chip was de-signed.The analyzer employs an embedded structure,adopts SOC platform technology and takes STM32 proces-sor as the core,as well as carries ATT7022D dedicated energy metering IC through address/data bus.The ana-lyzer uses ADC caching function to realize the data’ s rapid acquisition,and the STM32 processor with in-built dedicated FFT algorithm can implement harmonic analysis;and the Lagrange cubic interpolation algorithm em-ployed can correct the spectral leakage and picket fence effect incurred.Application experiments prove this an-alyzer’ s high acquisition accuracy,processing speed and high reliability.
出处
《化工自动化及仪表》
CAS
2015年第4期383-387,共5页
Control and Instruments in Chemical Industry
基金
四川省科技支撑计划项目(11zc0537)
