查询词典 pontryagin maximum principle

In the last chapter, we establish the Pontryagin\'s maximum principle for the time optimal control problems governed by 2-dimensional Boussinesq system.

在第五章，我们对2维Boussinesq方程的时间最优控制问题，给出了最大值原理。

The Pontryagin maximum principle is used to obtain the directions and the switch function of optimal thrusts.

基于C-W方程，提出了用Lagrange乘子法计算最优推力作用时刻和推力的大小及方向的方法。

In the study of open-loop optimal control problems, a useful tool is the so-called "Pontryagin"s Maximum Principle which gives a set of necessary conditions to optimal open-loop controls.

对于开环控制的研究，在最优控制理论中已经有了Pontryagin最大值原理这个有效的工具，它提供了最优开环控制的一个必要条件。

Based on Pontryagin maximum principle,the lunar soft landing problem is transformed into a two-point boundary value problem in mathematics.

首先，从庞德里亚金极大值原理出发，将有限推力作用下月球软着陆问题转化为数学上的两点边值问题；在考虑边界条件及横截条件的前提下，将该两点边值问题转化为针对共轭变量初值和末时刻的优化问题；然后应用非线性规划方法求解所形成的参数优化问题。

Under some proper conditions we prove the existence of optimal controls in the class of Lipschitz functions, and obtain an optimality condition looks somehow like Pontryagin's maximum principle for a smooth optimal control function.

在适当的假设条件下，我们证明了状态方程解的存在唯一性和最优控制的存在性；并且根据最有控制函数的光滑性进一步对最优化存在的必要条件进行分析。

In this paper,an optimum trajectory from perilune to lunar surface is derived in terms of Pontryagin's maximum principle,which is an open-loop way.Then,an optimal nonlinear control law based on an fuzzy neural network is presented,on the basis of the optimum trajectory,due to the nonlinear mapping function of the fuzzy neural network,which is a closed-loop way.

本文根据终端着陆条件和性能指标，以由Pontryagin's极大值原理得出从近月点到月球表面的最优着陆轨迹为基础，给出一种基于模糊神经网络的非线性最优控制策略，使被控系统能够通过模糊神经网络的非线性映射能力实现某种最优的闭环制导控制。

Using Pontryagin's maximum principle, the mathematical model of the active shock isolation was solved. The result indicated that its optimal control is bang-bang control. Then, the characteristic parameters of the active rapid recovery shock isolator were obtained and discussed.

利用Pontyagin最大值原理对模型进行了求解，得出快速回复性隔离器的隔离力控制是一个最大力量控制，在此基础上给出了主动式快速回复冲击隔离器的特征参数，指明了其工程实现方法。

Basically,an optimal nonlinear control law based on an artificial neural network is presented,on the basis of the optimum trajectory from perilune to lunar surface in terms of Pontryagin's maximum principle according to the terminal boundary conditions and performance index.

其主要内容是，根据终端着陆条件和性能指标，以由庞氏极大值原理得出从近月点到月面的最优着陆轨迹为基础，给出一种基于人工神经元网络的非线性最优控制策略，使被控系统能通过神经网络对非线性的映射能力实现某种最优的非线性控制。

Afterward, we analyze four possible paths using Pontryagin 's maximum principle, We obtain optimal control rules of two advertising expenditure and the long-run optimal equilibrium solution of this model.

然后，利用庞特里亚金最大值原理对四种可行路径进行分析，分别得出了两种广告支出的最优控制规律与该模型的长期最优均衡解，并研究了长期最优均衡解的渐近性态。

We obtain the stabilization of phase-field system via inner feedback control and establish the Pontryagin's maximum principle for the controlled Boussinesq system with state constricted.

我们研究了受内反馈控制的phase-field系统的稳定性；给出了具有内控制的Boussinesq方程的最大值原理；对2维Boussinesq方程时间最优控制问题给出了最大值原理。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。