查询词典 discrete continuous system

A nonlinear semi-discrete model of investment dynamic system is set,and the existence and unique of solution for semi-discrete system are discussed.

建立了投资动力系统的一个非线性半离散模型，并讨论了半离散系统解的存在唯一性，给出了线性半离散系统稳定的一些充分条件。

Considering the technical requirements,the stability andthe steady performance,the quantitative requirement for sampling frequency is present indiscrete control system.Considering that there is a step delay in discrete control in grid on inverter with a Lfilter,the quantitative relationship between critical FCCR and sampling frequency isanalyzed,and the steady performance is analyzed.Considering the technical requirements,the stability and the steady performance,the quantitative requirement for samplingfrequency is present in discrete control system with a step delay.

在L型并电加热管网中，考虑到离散化控制存在滞后一拍的问题时，本文分析并获得了离散PI控制系统稳定范围时闭环根临界频率fnmax和采样频率fs之间的定量关系；针对存在滞后一拍可能引起系统稳态特性下降的问题，分析了PI控制滞后一拍对频域特性造成的影响，综合考虑并网指标、稳定性要求和离散化对稳态特性影响三个主要因素，推导了存在滞后一拍的离散化PI控制对最低采样频率的量化要求。

Firstly, two examples, which belong to static analysis and dynamic analysis respectively, were given to show the effectiveness of discrete element method. Then the discrete element method was used to perform dynamic analysis of the Chinese 1 km deep-ocean mining system. The dynamic performance of the entire mining system under different current directions was discussed and compared with that from finite element method.

首先，从静态分析和动态分析两方面，给出2个典型算例，证明该方法的有效性；然后，将离散元方法用于中国1 km深海采矿系统的动力学分析，讨论不同海流方向下整体系统的联动性能，并与有限元方法进行对比。

The discrete-element modeling is a new dynamic modeling method in structural geology and geophysics research. The authors built a discrete element model to simulate the evolution of the fault system in active salt domes. Results show that the fault system undergoes three stages: symmetric deformation stage, asymmetric deformation stage, and complete fracture stage.

离散元模拟是构造地质地球物理研究中一种新的动力学模拟方法，作者通过构建离散元模型，模拟了主动底辟盐构造断裂系统的演化过程，结果表明，该断裂系统的发育主要经历了对称变形、不对称变形、整体破裂三个阶段。

And the effects of length of data N to the approximate entropy of chaotic system isalso analyzed.All these are accomplished by examining several time series produced by a surperposition of white noise and noise-free data.It uses the discrete system logistic map and continuous system Lorenz attractoras the examples.

以Logistic方程描述的离散系统和Lorenz方程描述的连续系统为例，采用白噪声和无噪声信号以不同的信噪比混迭而成数据的方法，分析了相同数据长度N，不同信噪比下，混沌系统近似熵的变化；相同信噪比，不同数据长度对系统近似熵的影响。

Then the design of PID fuzzy control system based on T-S fuzzy controller is proposed. 5. The parallel distributed compensation method is proposed to devise fuzzy controller based on the existed fuzzy state equation model and its stability theory for continuous and discrete system. The stability of fuzzy closed-loop system is investigated using LMI.

在现有的连续和离散系统的模糊状态方程模型及其稳定性定理的基础上，用"并行分散补偿"方法设计出模糊控制器，利用线性矩阵不等式法对模糊闭环系统的稳定性进行了分析，并且在线性矩阵不等式的基础上设计出了稳定的模糊控制器。

The CSD algorithm is shown to be efficient design method for complex system in parallel, and can search out better design for mixed continuous/discrete system in very reasonable number of system analysis compared to traditional optimization method, and is able to deal with the issue of dynamic design requirements.

并行子空间设计算法不仅有效地实现了并行设计思想，而且与传统的优化算法相比，CSD算法降低飞机系统分析的次数，找到系统全局最优解的概率也较高。另外，它还能成功地解决含有离散/连续混合变量的设计优化问题，以及具有处理工程设计中设计要求动态变化的能力。

The concept of synchronization and several kinds of classical synchronization method are given, then the parameter identification process of chaotic system based on adaptive synchronization is given. Parameter identification problem can be converted into optimization with a given index function. Finally the paper explains the whole process with discrete Henon system and continuous Lorenz system.

首先，介绍了同步的定义和几种经典的同步的方法，说明了基于自适应控制方法的混沌系统参数辨识过程，并把参数辨识问题转化为对性能指标的优化问题。

Using the subnet models to establish the flexible logistics automated system which is built and study its logistics process control question. Because of using modular modeling method, the model possesses good extensibility and good transplant ability. Furthermore, the model has self-revisionary ability and include discrete system and continuous system as a result of using self-controlled hybrid Petri-nets modeling method.

由于采用模块化建模的方法，建立的柔性物流自动化系统模型具有扩展性和可移植性好的特点，同时，由于采用自控混合Petri网方法建模，该模型是一个包括离散系统和连续系统的模型并具有在运行过程中进行自我修正的能力。

The book is divided into 10 chapters, including discrete and continuous system of PID control system, commonly used digital PID control, Expert PID and fuzzy PID control, neural PID control, genetic algorithm PID control, Multivariable decoupling PID control, several advanced PID control, gray PID control, PID control servo system, PID control in real time, ea

全书共分十章，包括连续系统和离散系统的 PID 控制，常用数字 PID 控制，专家 PID和模糊 PID 控制，神经 PID 控制，遗传算法 PID 控制，多变量解耦 PID 控制，几种先进的PID 控制，灰色 PID 控制，伺服系统 PID 控制，PID 实时控制，每种方法都通过 MATLAB 仿真程序进行了说明。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。