查询词典 steady state

In this paper, the mathematic model of a. c. excited generator system based on field-oriented control is established first. The simulated results operating at no-load and steady state are agreed with the test waveforms by means of 2. 8kW ACEG prototype developed by Harbin institute of large electrical machinery and Zhejiang University.

本文建立了磁场定向控制交流励磁发电机系统的数学模型，并采用哈尔滨大电机研究所和浙江大学联合研制的2.8kW ACEG系统实验原理样机，测试。。。

For the turbulent developing flow of absorbing and isotropic scattering medium in a circular tube, the steady state heat flux of the coupled heat transfer of turbulent convection and thermal radiation under constant wall heat flux was investigated numerically.

对圆管内物性随温度变化的吸收-各向同性散射介质的湍流入口段，数值研究了定热流加热下辐射与湍流正在发展流耦合换热的稳态热流特征。

In order to improve the power quality of distribution network system, one of the most effective methods is reactive power compensation. In this paper, the Distribution Static Synchronous Compensator for reactive power compensation was studied, and then the digital controller based on One-cycle control was designed. The waveforms of experimental device based on DSTATCOM of one-cycle control were given in this paper. It can be seen from the results that the fluctuation of DC capacitor voltage is lower, the dynamic response speed of DSTATCOM providing or absorbing reactive power is fast, and the accuracy of steady-state compensation can achieve the requirements of reactive power compensation in engineering basically

为了提高配电网系统的电能质量，对无功功率进行精确补偿是非常有效的方法之一；本文研究了配电网静止同步补偿器用于无功补偿，并设计了单周控制的数字控制器；文中给出了基于单周控制的DSTATCOM无功补偿试验装置工作过程中的波形曲线，从试验结果可见，本文设计的单周控制DSTATCOM无功补偿装置的直流侧电容电压在工作过程中波动较小，装置发出或者吸收无功功率的动态响应速度较快，稳态补偿精度基本能够达到工程中无功补偿的要求。

Based on traditional second-order SMC, integral action is introduced into the sliding surface to eliminate the steady state error and maintain the dynamic performance of Buck inverter.

在传统的比例微分二阶滑模的基础上，加入了输出电压偏差的积分环节，使系统本质上消除了稳态误差，同时保证相应的动态性能。

The Steady-state model is based on the PENG-ROB equation, that is, the material balance equations, Phase equilibrium equations, component additivity and the enthalpy balance equation.

稳态模型建立的基础是 PENG-ROB 方程，即物料平衡方程、相平衡方程、组分加和方程和焓平衡方程。

Up to now, the performance index is almost described as an algebraic function of manipulating variables, it implies the response of performance index to the manipulating variables is instantaneous or the system is in steady state, and the effects of disturbances on the objective function are not taken into consideration.

在以往的工作中，大都把过程的调优变量与目标函数之间的关系用代数方程描述，这意味着目标函数对调优变量的响应是瞬时的，或假定过程处于静态，而且一般也不考虑过程中其它干扰对目标函数的影响，即在算法结构中，调优变量与目标函数构成唯一的因果关系。

A theory and algorithm are presented for the power system steady state stability probabilistic analysis in this paper .

给出了多机系统静态稳定性概率分析的理论和方法。

Intermittent hemodialysis produces a dramatic alkalinization, frequently followed by a rebound of acidosis; however, CRRT slowly generates a steady-state concentration of both uremic solutes and organic acids in blood.

间歇性治疗会产生显著的碱血症，随后常常导致酸中毒的反弹。而CRRT则是缓慢地产生稳定浓度的尿毒症溶质和有机酸。

The interference, which has much to do with shimmy and handling characteristic and directional stability of vehicle, between the suspended structure, the front axle and steering system is described accurately In the models, the concrete component parameters or the design parameters are adopted to make it easy that the models are directly used in optimization design of real products. In order to make mathematical simulation and optimum analysis accurately with a particular vehicle and to study the influence of tyre characteristics on the lateral dynamic performance of vehicle, not only are the whole structure parameters in the models measured, but also is the test of the tyre cornering characteristics done, the accurate parameters of the tyre cornering characteristics are obtained and the practical tyre models of both steady state and dynamic state are selected.

为了提高仿真计算与优化分析的精度，和进一步分析有关轮胎特性对汽车横向动力学特性的影响，除了测量了模型中的全部结构参数外，特别做了轮胎侧偏特性试验，获得了比较准确的轮胎特性参数，并选用了比较实用的轮胎动态和稳态侧偏特性模型。

A detailed model of non-linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non-linearity are considered, is proposed in this paper. Based on several numeric examples investigated by the Galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. Another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived. The smallest excitation amplitude,the transient state and steady state resonance amplitudes, and the changing characteristics of the axial force are obtained by using harmonic balance method. According to numerical examples calculated by numerical integration method, the effects of the inner damping of the stay cables are investigated.

本文创新地提出了斜拉桥拉索-桥面耦合参数振动模型，推导了索-桥耦合非线性参数振动方程组，联合Galerkin法及数值积分方法，对各种特性的拉索进行了数值求解，得出了影响拉索参数振动的各种因素；提出了斜拉索受轴向端激励参数振动模型，导出了模型的非线性振动方程，使用谐波平衡法得出了产生参数振动需要的最小激励幅值、共振时瞬态及稳态的振动幅值及索拉力的变化特性，并用数值积分方法对实际斜拉桥拉索进行了计算，分析了拉索阻尼对参数振动的影响。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。