摘要
论述了在飞行器仿真转台运动伺服系统中基于PMAC（Programmed Muti Axises Contorller）卡的几种数据采集方法，着重介绍了数据的采集和存储原理，PMAC卡与PC机的通讯方法及数据的解码原理。同时，对伺服系统的相差和幅差的计算方法进行了研究。最后，在某转台控制系统应用这些方法对系统的相差幅差进行了分析，并与外接CF920的测试结果进行了比对，取得了满意的效果。
Different PMAC card-based data collection methods used in spacecraft turntable servo systems are discussed with highlights on data collection and storage principles, communication between PMAC card and PC, and data decoding principles. Computation method for the phase difference and amplitude difference of the servo control system is studied. Finally, the method is used in analysis of the phase difference and amplitude difference of a turntable control system. Satisfactory effectiveness is verified through comparison with the test results of an external CF920.
出处
《飞行器测控学报》
2008年第2期36-40,共5页
Journal of Spacecraft TT&C Technology
关键词
PMAC
数据采集
频谱分析
离散傅立叶变换(DFT)
快速傅立叶变换(FFT)
Programmed Multi-Axes Controller （PMAC）
Data Acquisition
Spectrum Analysis
Discrete Fourier Transform （DFT）
Fast Fourier Transform （FFT）
