vsr

The mathematical model of 3-phase PWM VSR using state space average method is studied under the high swith frequence at frist, then the pulse time ratio is given using the space vector technology.

在高开关频率下，应用状态空间平均法建立三相电压型PWMVSR数学模型，利用矢量合成原理，推算出各相开关函数占空比。

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The results indicate that residual stress and deformation is decreased, process cost is reduced and working efficiency is improved greatly after VSR.

结果表明：振动时效后构件的残余应力下降，变形减小，工艺费用降低，工作效率大大提高。

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VSR pre-turbulent regulator was employed in the gas pressurization unit at the roasting plant of SISG, therefore a steady-pressure regulation of gas flow rate and energy saving were realized.

韶钢焙烧厂煤气加压机安装使用了V SR气动预旋风调节装置，实现了对风机的等压力流量调节，并可节约电能。

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The effectiveness of VSR ( Vibratory Stress Relieve) technique in relieving the residual welding stress on a penstock wye model ( model scale 1:5.25) is researched. The model is the biggest in our country.

本文采用振动时效法，在国内目前最大的钢岔管模型（1：5.25）上进行了消除焊接残余应力的实验研究。

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The process and principle of vibration stress relief ( VSR ) were described in detail.

本文比较详细地描述了振动时效的工艺和原理.

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The technique principle, characteristics and application scope and examples of VSR are introduced in this paper.

介绍了振动消除应力技术的原理和特点及其应用范围与应用实例.

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The paper discusses the principle of the three-phase Voltage Source PWM Rectifier ( VSR ) .

通过讨论三相电压型PWM 整流器 的基本原理.

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Vibration Stress Relief ( VSR ) is a method to obtain the dimensional stability for reducing residual stress.

振动消除应力是消除构件残余应力,获得尺寸精度稳度性的一种工艺方法.

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The choice of dynamical stress for VSR based on micro plastic deformation

基于微塑性变形的振动时效激振力的选择

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Based on analyzing the three-phase VAR work principle, the mathematical model of VSR is educed;

本文在对三相VSR工作原理进行分析的基础上，推导出整流器系统的数学模型；

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This paper introduces VSR process eliminating residual stress of bed casting method, which gains obvious results.

介绍了用振动时效工艺消除床身铸件残余应力的方法并获得了明显的效果.

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At present, temper aging and vibration aging ( VSR) are commonly applied to remove residual stress in welded frames in factories.

目前，工厂中一般采用回火时效和振动时效法（VSR）对焊接构架中的残余应力进行消除。

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According to the pertinent documents, the technical parameter and criterion of VSR are also put forward.

根据有关文献资料, 给出了振动时效的技术参数和效果评定方法.

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