查询词典 optimal control

The formulation of power system transient stability preventive control based on optimal power flow is presents in this thesis, in which multicontingency is considered. The infinite dimensions nonlinear optimization problem in which differential-algebraic equations are existed is changing into finite dimensions difference-algebraic equations by implicit trapezoid method.

建立了基于最优潮流的电力系统暂态稳定预防控制模型，通过隐式梯形法将含有发电机动态微分-代数方程和暂态稳定约束的无限维优化问题转换成有限维的常规静态最优潮流问题。

Then, the "minimal slope discarding" method is applied to obtain the optimal truncation point and the rate control is realized, The proposed method can effectively reduce the computation of Tier-l up to 84.5% and cause only 0.094dB PSNR loss for the reconstructed image in the case of 0.25bpp bit rate.

实验结果表明，在0.25bpp比特率时，本算法减少了84.5%的层1编码的计算量，而重构图像的信噪比仅损失0.094dB。

Therefore, this thesis is devoted to study uniformly Lipschitz optimal feedback control problems.

本文就讨论满足一致Lipschitz条件的最优反馈控制问题。

In order to diagnose faults and to solve the physically unrealizable problems of the optimal fault-tolerant control law, a delay-free transformation approach was given for delayed measurements. The on-line fault diagnosis and the observation of system states were realized by constructing the reduced-order state observer for the augmented system comprising fault states.

为了进行故障诊断并解决最优控制的物理不可实现问题，给出了一种测量时滞的无时滞转换方法，并通过构造含有故障状态的增广系统的降维状态观测器，设计了在线诊断故障的故障诊断器并同时实现了系统状态的观测。

This paper studies an optimal design method of centering and tolerancing which is called Control Variate method.

引言 Monte Carl。方法是电路参数中心及容差设计的一种基本方法〔，，2J，但它计算量大，统计精度低。

This paper lays its emphasis on the latter by presenting a state optimal space vector control strategy on the basis of using a modified synchronous detection method to generate the reference current.

本文在采用改进的同步检测法产生指令电流的基础上，提出了一种基于状态优化的空间矢量控制方案，主要研究滤波器中变流器的控制策略问题。

The method applies fuzzy control theory to obtain the appropriate velocity and angular velocity by selecting optimal parameter of fuzzy logic controller.

该方法通过合理选择模糊控制器的参数和优化规则库，使其输出合适的线速度和角速度，从而控制移动机器人准确地跟踪预规划的路径。

The key technologies of ABS based on slip-ratio consist of processing of wheel speed and calculation of wheel acceleration, estimation of vehicle velocity, estimation of the optimal slip-ratio, and the control strategy of ABS. In order to improve the performance of conventional ABS, the above mentioned key technologies and corresponding realization algorithms had been investigated in this paper, and the ABS product equipped in vehicle for performance test had been manufactured.

结合车辆动力学控制的最佳ABS系统是以车轮滑移率为控制目标的ABS系统，它涉及到一系列关键技术研究，如轮速信号的处理方法和轮加速度信号的计算方法、车身速度估计方法、最佳滑移率估计方法和ABS的控制方法等。

There are some problems to be solved in its practical application, such as jacket water temperature control, the recovery and management of waste heat, optimal operation, and so on.

在实际运行过程中，需要同时解决缸套水温度控制、余热回收与管理等多个问题。

Focusing on some disadvantages in standard BP algorithm, such as low convergence rate, easily falling into local minimum point and weak global search capability, Genetic algorithm is used to optimal the connection weight of BP Algorithm in this paper, and construct a GA-BP algorithm of evolutionary neural network, and the algorithm is applied to the control of BLDCM speed adjusting system.

针对标准BP算法存在全局搜索能力弱和易陷入局部极小点等缺点，本文将遗传算法与BP神经网络相结合，构造了一种新的进化神经网络GA-BP算法，并将该算法应用于无刷直流电机调速系统的控制，仿真结果表明，与传统的PI控制系统相比，该算法得出的电机控制曲线几乎无超调，与基于BP算法的速度控制系统相比较，具有收敛速度快、不易陷入局部极小的优点。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。