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.
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.
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.
本文针对由二轮驱动的移动平台和二连杆机械臂组成的移动机械臂的输出跟踪问题，利用滑模控制原理为其设计了动态滑模控制器。
A dynamic sliding mode controller is devised to achieve output tracking of the mobile manipulator that consists of a mobile platform which has two driving wheels and a two-link manipulator arm.
首先，分析一类两轮移动机器人的运动学模型和动力学模型，针对其轨迹跟踪控制问题，设计滑模控制器。
Firstly, a kind of kinematics model of two-wheel driven mobile robot is analyzed. Aimed at its trajectory tracking control problem, the sliding-mode controller is designed.
基于再生核理论给出了对轮动式移动机器人轨迹跟踪控制问题的一种新的解决方法。
A new method for trajectory tracking of wheeled mobile robots is presented based on the theory of reproducing kernel.
采用了一套描述主缆位移、吊杆内力值以及实现三轮张拉到位的方法来跟踪模拟计算吊杆张拉过程中的每一步骤。
The method, which describes the displacements of main cable and hangers force and puts the tension completion into effect by three times, to trace analogy calculation during tension procedure.
本文针对由二轮驱动的移动平台和二连杆机械臂组成的移动机械臂的输出跟踪问题，利用滑模控制原理为其设计了动态滑模控制器。
The variable structure model was based on the sliding mode control theory to switch the different control strategies of acquisition and pursuit tracking.
然后在研制的非完整两轮驱动移动机器人的实验平台上对该算法进行了实时轨迹跟踪实验，结果表明了该非线性跟踪控制算法的有效性。
Furthermore, the implementation platform of a two-wheel driven mobile robot is developed to perform the real-time trajectory tracking algorithms, and the experiment res…
然后在研制的非完整两轮驱动移动机器人的实验平台上对该算法进行了实时轨迹跟踪实验，结果表明了该非线性跟踪控制算法的有效性。
Furthermore, the implementation platform of a two-wheel driven mobile robot is developed to perform the real-time trajectory tracking algorithms, and the experiment res…
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