但在今年9月出现了一轮赎回潮，另一家基金跟踪公司TrimTabs表示。

However, in September a tide of redemptions began, according to TrimTabs, another fund tracker.

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由于交叉耦合控制利于多轮驱动之间的制约和协调，可以有效减少方向误差和提高路径跟踪的精确性。

Because cross-coupling control is advantageous to restricting and harmonizing between multi driving wheels, it can reduce orientation error and improve the accuracy of path tracking effectively.

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本文结合参与的“多机器人系统协调”项目，研究两轮差动驱动的移动机器人路径跟踪控制问题。

According to the project "multiple mobile robots system coordination", this paper studied the path following control problem of two wheels robots with differential steering.

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