It is shown that the proper acceleration of null geodesic with conjugate points approaches infinity.
具有共轭点的类光测地线的固有加速度趋于无穷大。
On account of the proper acceleration-deceleration curve, the flexible impact of work station can be avoided.
采用合适的加减速曲线，避免了工作台的柔性冲击。
The motion control of the hexapod parallel mechanism with high speed and high acceleration depends on the accurate dynamics model, proper simplification and real-time computing.
实现六足并联机构高速，高加速运动控制的关键在于所建动力学模型的准确表达、适当简化以及实时计算速度的满足。
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