过渡过程

基于MATLAB的水力机组过渡过程研究

Transient process research of hydraulic unit based on MATLAB

双频天线是移动通信系统由2G向3G过渡过程中不可缺少的部分。

Dual-frequency antenna is indispensable part to transient process from 2G to 3G .

过去这一过渡过程常常很艰难。

In the past this process of transition has often proven difficult .

WINDOWS界面下水力-机械过渡过程仿真计算通用软件

Software package for simulation calculation of hydro mechanical transients under WINDOWS interface

文中采用时域法研究系统的动态特性，指出阻尼系数ζ和固有频率ωn对系统动态过渡过程的影响。

Damping ratio ξ and natural frequency ω n have effects on transition process .

CO2焊短路过渡过程瞬时能量的波形分析

Instantaneous energy waveform of short circuiting transition in CO_2 arc welding

CO2弧焊熔滴过渡过程的特征及其定量评价

Characteristics and quantitative evaluation on co_2 arc welding droplet transfer process

计算机控制的CO2短路过渡过程分析和检测

The computerized measure and analysis of CO_2 short circuit transfer

CO2焊熔滴短路过渡过程的分析与控制

The Analysing and Controlling of Droplet Transfer Process During CO_2 Short Circuiting Arc Welding

波控CO2焊短路过渡过程的计算机仿真及试验

Computer Simulation and Experimental Research on CO_2 Short-cir. cuit Transfer Welding Under Waveform Control

CO2弧焊熔滴过渡过程焊接电弧的并联式波形控制

Parallel-style Waveform Control on Welding Arc in Droplet Short-circuiting Transfer Process of CO_2 Arc Welding

基于相位裕度和过渡过程时间的PID参数自整定方法

A self tuning technique of PID-controller based on the specifications of phase margin and transient time

第四，分别针对普通CO2焊短路过渡过程和波控CO2焊短路过渡过程两种情况，对一些参数对焊接过程的影响进行了仿真分析。

Fourthly , the influence of some parameters to welding process is analyzed using above two models .

CO2焊短路过渡过程控制策略及实施方案探析（一）

The controlling tactics and implementing method in the CO_2 short-circuit arc welding process ( part 1 )

提出了对柴油机数字式电子调速器PID参数按调速系统过渡过程进行模糊自校正的原理，并对此进行了仿真研究。

The conception of fuzzy self-tuning PID parameters for digital governor of diesel engine based on the speed regulating dynamic process was given .

中值时间对脉冲MIG焊熔滴过渡过程的影响

Effects of median time on droplet transfer process in MIG welding

纵向磁场作用下MIG焊熔滴过渡过程的分析

Analyses of process of MIG droplet transfer with longitudinal magnetic

研究和分析TD理论，验证了TD在过渡过程安排和滤波方面的良好性能。

The theory of TD is discussed and proved effective in transient design and filtering .

文中提出分段参数调节增量式PID算法，通过调试和推导，该法具有控制超调量小、过渡过程时间短、精度高、软件实现方便等优点。

It has been proved by practice that such a method has the advantages of little over control , short transient time , high accuracy and convenient software .

试验和评判表明，该评价函数能够对CO2焊接短路过渡过程的不同规范状态给予综合评价。

The testing and evaluation results show that the evaluation function can give a suitable synthetically valuation for the short-circuiting transfer process with a variety of welding variables .

在通常的脉冲控制系统中，当输入信号是阶跃函数时，系统的过渡过程至少在n个采样周期内才能完全结束（n是控制对象的阶数）。

In ordinary sampled-data control systems the system response to a step input can reach its equilibrium state only within n or more sampling intervals ( n is the order of the controlled plant ) .

MATLAB软件可以对CO2焊短路过渡过程的波形控制做出定量分析，是指导实验的一个有力工具。

The both are consistent . The MATLAB software may be used as an excellent simulation tool on the short-circuiting transfer process of CO_2 arc welding and be a excellent tool on guiding experiment .

针对液压系统的泄漏问题，提出了基于BP神经网络，以液压系统压力动态过渡过程为分析对象的故障诊断方法。

This paper introduces a method based on BP neural networks for the leakage fault diagnosis of the Hydraulic Systems ( HS ) . This method analysis the transient procedure of the pressure of HS .

最后借助于MATLAB软件对RLC电路的过渡过程进行了仿真的分析，并对其产生的误差作出了一定的解释。

In the end , the author takes up simulation analysis on the transition process of RLC circuit with the help of MATLAB and accounts for the difference .

Matlab仿真表明，采用模糊PID控制器后，系统性能较经典PID控制器改善了控制系统的过渡过程、减小超调量，又提高了系统跟踪精度、稳定精度和响应速度。

The simulation by Matlab indicates that the system performance is improved effectively compared with traditional PID controller . Fuzzy-PID controller could shorten the transient process , reduce the overshoot and enhance the tracking accuracy .

对CO2弧焊短路过渡过程，以及研制的一种新型波控器的电流波形控制过程进行了计算机模拟仿真，仿真结果与实验吻合。

The short-circuiting transfer is a main form of CO2 arc welding droplet transfer . The arc welding short-circuiting transfer process and the current waveform control process of a developed new type waveform controller a simulated .

与Hilbert-Huang变换的对比验证了该方法在分析水轮机过渡过程非平稳振动信号方面的有效性。

The comparison with Hilbert-Huang transform verifies its feasibility and effectiveness in analyzing the nonstationary vibration signals of hydroturbine during transient processes .

柴油机电子调速器一般采用PID（比例、积分、微分）算法控制，为了提高系统的调速性能，在系统过渡过程的不同阶段控制器应取不同的增益，即应实时校正PID的参数。

Diesel electric governor 's control system often adopts PID regulation arithmetic . For improving the system s performance , the controller has to adopt different gain during the different period of system s transition process ;

假设对象参数在区间范围内摄动，利用Monte-Carlo随机实验方法分析了系统过渡过程的性能鲁棒性。

When the parameter of plants varied in the interval range , the dynamic performance and robustness of PID control system are analyzed by Monte-Carlo stochastic methods .

研究了阀调节VS（ValveStroking）的理论和计算方法，并将阀调节应用于泵系统的水锤防护中，对事故停泵过渡过程进行了计算机模拟。

The calculation method of Valve-Stroking was studied and applied to waterhammer in pumping system with long pipe . The computer simulation of the transition process of unexpected pump-stop was made .