研究具有二阶可降阶微分约束的力学系统的形式不变性。
A form invariance for mechanical systems with second_order reducible differential constraints is studied.
证明了通过施加适当的微分约束，K p方程族的格拉姆行列式的解很自然的约化为BK p方程族的解。
It is shown that, by imposing proper differential constraint, the Grammian determinant type solutions of the KP hierarchy are naturally led to the PfafRan solutions of the BKP hierarchy.
来看一下这个约束量的微分。
Well, let's look at the differential — — of this constraint quantity.
然后，可以用微分关系,或受约束的偏微分来表示,曲线的切向量，就是这样了。
Then actually there are ways you can use basically differentials and constrained partials to figure out what the tangent vector to the curve is and so on.
当使用微分方程时，要对其进行线性化并受限于一定的约束条件才能建立有用的输入-输出关系。
When differential equations are encountered, they are linearized and subjected to whatever constraints are necessary to establish useful input-output relationships.
将微分进化算法的应用范围从求解无约束单目标优化推广到求解一般情形的多目标优化。
The application scope of differential evolution algorithm is extended to a general multi-objective optimization from unconstrained single-objective optimization.
在此基础上，提出了汽车转向控制中出现的一类非线性微分包含系统的约束鲁棒控制问题。
Finally constrained robust control for a class of nonlinear differential inclusion system is proposed, which is used in vehicle steering control.
对于受速率为常数约束的运动质点，可以应用动能定理建立其运动微分方程。
The differential equations of motion of a particle constrained to moving in a constant speed are deduced from the kinetic energy theorem.
本文旨在研究求解非凸约束优化问题的基于二阶导数的微分方程方法。
The aim of the dissertation is to study second order derivatives based differential equation approaches to nonconvex constrained optimization problems.
考虑能量、时间、视线等约束条件，基于微分方程法研究了近程自主交会滑移轨道设计方法。
Considering constraints of energy, time and line-of-sight angle, a near-range autonomous rendezvous glidescope orbit design method is studied based on the differential equation method.
以其作数值例子，我们处理椭圆微分方程中的状态约束最优控制问题，并对既定结果与现行方法进比较。
As numerical examples we treat state constrained optimal control problems for elliptic differential equations. We also compare the established results with existing methods.
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 main results are: (1) There exists a finite time, for which a trajectory of the differential inclusion reaches C under state constraints K;
将微分进化算法扩展到可求解混合变量、有约束的船舶主尺度优化问题。
In this paper, the DE algorithm was expanded to solve the mixed variables, restricted principal dimensions optimization.
第二部分讨论一个带有逐点状态约束的四阶常微分系统的时间最优控制问题，给出了显式解。
In the second part, we discuss the time-optimal control problem for an ordinary differential system with a pointwise state-constraint. We give the explicit solution.
本文介绍了用广义坐标法推导的梯形截面箱梁约束扭转计算的基本微分方程；
Using the generalized coordinates method, fundamental equations for the restrained-torsion of thin-walled box girders of trapezoidal cross section are derived.
阐述了三缸机械液压约束活塞发动机(HCPE)工作原理，建立了系统工作过程的微分方程。
The working principle and structure of 3-cylinder hydraulic confined piston engine (HCPE) is put forward, and the working process differential equations is constructed.
本文提出一种偏微分方程约束的非局部均值图像插值模型。
Non-local means model processes image basing on global information.
然后，利用一个新的可测选择定理解决了受非线性微分包含约束的最优控制的存在性。最后，给一例子加以说明所获结果的应用性。
Then, we extend the Fillipov's selection theorem and discuss a general Lagrange type optimal control problem. Finally, we present an example that demonstrates the applicability of our results.
然后，利用一个新的可测选择定理解决了受非线性微分包含约束的最优控制的存在性。最后，给一例子加以说明所获结果的应用性。
Then, we extend the Fillipov's selection theorem and discuss a general Lagrange type optimal control problem. Finally, we present an example that demonstrates the applicability of our results.
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