周期性误差 Periodic Error
周期性误差积分控制器 periodic error integrating controller
周期性零值误差 cyclic zero error
周期性相角误差 error periodic phase
周期性形状误差 figuration periodicity error
周期性误差是匀速直线运动降质图像复原中普遍存在的现象，它严重影响复原图像质量。
Periodic error commonly appear in restoring uniform motion blurred picture, its appearance degrade the quality of restored image heavily.
结果表明：该方法能够有效地抑制位置反馈元件周期性误差导致的速率波动，提高转台的速率平稳性。
The results show that this method can efficiently restrain the rate ripple of the table caused by the periodic errors of position feedback elements, and can raise the rate stability of tables.
重复控制的基本思想是控制理论中的内模原理，根据上一周期的控制误差消除后面各周期性的信号误差。
The repetitive controller based on the theory of internal model produces correction signal based on the control error of the last cycle to eliminate the error in the latter cycle.
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