针对采样周斯内的位置误差会引起电机额外的转矩波动，本文引入了位置预测算法。

Position prediction algorithm is introduced to compensate the position error in the sampling time, or the extra torque ripple would be produced.

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斯波特两周内都于高峰时段在公园里巡逻。

Spot patrols the park for two weeks during peak hours.

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苹果公司首席执行官斯蒂夫·乔布斯自6周前休病假以来首次公开露面。

Steve Jobs, Apple's chief executive, made his first public appearance since going on medical leave six weeks ago.

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