The state trajectory of system is chattering, which restrict it's actual applications. In the circumstances, the arrival condition and the existence condition have been changed .
同时，在离散的情况下，滑动模态的性质、存在条件及其到达条件都己经改变，因此研究离散系统变结构控制方法对降低抖振具有重要的理论价值和实际意义。
An optimal trajectory generation strategy based on way-points is presented to solve the fixed-time state transition for spacecraft relative motion in a circular orbit.
针对圆(近圆)轨道航天器相对运动的固定时间状态转移问题，提出了一种基于导航点的多脉冲优化轨迹生成策略。
The results shown that, with the effect of nonlinear components, the symmetry of rotation trajectory of the bearing center was broken, and the motion of the journal center presented a steady state.
计算结果表明，在非线性因素作用下，轴承中心的轴心轨迹不再具有对称性，而轴颈中心却表现为一种稳定的运动状态。
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