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| 摘要: |
| 所开发的谐波分析装置用TMS320F2812作为整个系统的CPU,完成采样、数据处理、对外接口和通信等。对模数转换(AD)采样结果进行校正,利用某AD的2个采样通道采样已知的2个参考电压,通过与准确值对比计算出增益和偏移,再校准该AD其他通道的采样数据,降低了增益误差和偏移误差,采样误差降低到0.5%以下。基于DSP/BIOS实现整个软件系统的编写和调试,缩短了软件开发周期。仿真结果表明,该装置实现了高精度、高可靠性的谐波测量。 |
| 关键词: TMS320F2812,谐波分析,AD校准,DSP/BIOS |
| DOI： |
| 分类号:TM935 |
| 基金项目: |
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| Power system harmonic analysis device based on TMS320F2812 |
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LI Hong-wei WANG Hong-cheng
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| Abstract: |
| The developed harmonic analysis device uses the chip TMS 320F 2812 as the CPU of the whole system for sampling,data processing,interface and communication.By sampling two known reference voltages through two channels of an AD(Analog-to-Digital) converter,its gain and offset are calculated and then applied to the samples from other channels of this AD converter to lower the gain error and the offset error.The sampling error is less than 0.5 %.The software development and debugging is based on DSP / BIOS to shorten the development period.Simulation results indicate that the device has higher measurement precision and reliability. |
| Key words: TMS 320F 2812,harmonic analysis,AD calibration,DSP/BIOS |
