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。
So maneuver reentry trajectory design problem was transferred into the more complex optimum control problem with terminal constraints and inner state constraints.
这就增加了内点约束，从而使机动再入弹道设计问题成为具有内点约束和终端约束更复杂的最优控制问题。
The effective length of the drag line will be obtained by solving the reverse catenary equation and then the expression of trajectory in actual state will be derived.
通过对反悬链方程的求解推求有效缆长，继而得出了实际状态下的轨迹表达式。
The difference properties of materials and the difference forced state result in variance of trajectory, thereby achieve the objective of separation.
由于各种物料电性质的不同，受力状态的不同使物料落下时的轨迹不同，从而达到分选的目的。
The evolution of configuration from an initial state of a tokamak-like plasma to RFP along the trajectory of minimum energy state is studied.
本文给出了沿极小势能轨迹从类托卡马克至反场箍缩（RFP）的演变。
The ground state wave function can be expressed as a series of integrations along the trajectory and the energy as a series of differentials at the minimum of the potential.
基态波函数可以表示为沿这条确定轨迹的一系列积分，而能量则可以用位势极小值处的一系列微分表示。
The main results are: (1) There exists a finite time, for which a trajectory of the differential inclusion reaches C under state constraints K;
主要证明了：（1 ）存在有限时间，使在约束K之下，微分包含的一条轨道可以到达C；
The fuel optimal cruise trajectory of a powered common aero vehicle was analyzed. The problem was divided into determining the optimal steady-state cruise and optimal periodic cruise problems.
研究了有动力通用再入飞行器的燃料最优巡航轨迹，将问题转化为求解最优稳态巡航轨迹和最优周期巡航轨迹问题。
The fuel optimal cruise trajectory of a powered common aero vehicle was analyzed. The problem was divided into determining the optimal steady-state cruise and optimal periodic cruise problems.
研究了有动力通用再入飞行器的燃料最优巡航轨迹，将问题转化为求解最优稳态巡航轨迹和最优周期巡航轨迹问题。
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