1、

Based on heterodyne and vector analysis theories, origins and modes of the frequency mixing error and phase jump error were analyzed. On the above basis, procedures to improve the accuracy of the measurement system were suggested.

利用激光外差及矢量分析理论,深入研究了频率混叠误差和相位跳变误差的成因、变化规律,并讨论了提高测量系统精度的有效措施。

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2、

the actual rotary speed during the stage jump input period could trace the given rotary speed and there was no error during the stabilized period.

实现了阶跃输入时的实际转速对给定转速的跟踪,而且稳态时无偏差。

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