vibration n. 1.振動,顫動;擺動;【物理學】振動。 2.(心的)震顫。 3.(思想情緒的)激動。 4.猶豫。 the amplitude of vibration 【物理學】振幅。 the vibration period = the period of vibration 振動周期。 adj. -al
Development and application of bridge decreasing vibration technique 橋梁減振技術(shù)的發(fā)展與應用
It offers a theory gist to decrease vibration and reduce noise of gear - box 這為變速箱的減振降噪提供了理論依據(jù)。
In this dissertation , a research on decreasing vibration and noise for equipment mounted on a floor was studied 本文針對諸如機器設備上樓等柔性基礎的減振降噪問題進行了研究。
In addition , two kinds of vibration - decreasing measures are applied on the rail lines with big vibration , and the effects of decreasing vibration are also analyzed comparatively 對振動較大的軌道沿線采用了兩種不同的減振措施,并對減振效果進行分析比較。
For the case , we put forward the methods for decreasing vibration at the peak speeds and study the influence of support plan for vibrational character of rotor - support system of the aeroengine 研究降低峰值轉(zhuǎn)速下振動水平的方法及支承方案對發(fā)動機轉(zhuǎn)子?支承系統(tǒng)振動特性的影響,得出了有工程參考價值的結(jié)論。
Scientists and technologists of many countries have dedicated a great effort to solve this problem , many achievements were achieved , a lot of measures to decrease vibration and noise were made out . each kind of measure has certain effect to decrease vibration and noise 各國科技工作者已經(jīng)對此展開了長期深入的研究,取得了很多的成果,并制定了一些減振降噪的措施,每一種措施都有一定的減振降噪效果。
Stability and intensity of structure are commonly top - priority in the structure design . when a noise problem has been found in the structure , the common way to decrease vibration is adding damping or vibration isolating because of much restriction in the modification of structure 在常規(guī)的結(jié)構(gòu)設計中,設計過程往往優(yōu)先考慮結(jié)構(gòu)的穩(wěn)定性和強度及重量等因素,在試驗階段才考慮振動和噪聲問題,此時,結(jié)構(gòu)可改動的余地一般已經(jīng)很小,通常只可能通過附加阻尼或者采用隔振手段等來實現(xiàn)減振降噪。
The dynamic predigesting model for passive isolation of flexible base system was established , and the four - pole parameters and machinery impedance methods were adopted to analyse the system , the expression of the responsibility and power flow transmissibility was deduced . by means of the matlab programming language , the responsibility and power flow transmissibility were simulated . proposed the vibration contrl method of optimizing system parameters . the methods proposed in this dissertation , can meet the requirement of decreasing vibration and noise for flexible base , and have some practicability and reference value 對柔性基礎被動隔振系統(tǒng)進行了力學建模簡化,并采用四端參數(shù)和機械阻抗方法對其進行分析,推導出其響應比和功率流傳遞率的表達式,并利用matlab程序設計語言對響應比和功率流傳遞率進行了模擬仿真。提出了以優(yōu)化系統(tǒng)參數(shù)為措施的振動控制方法。本文所提出的方法,能夠滿足柔性基礎減振降噪的要求,具有一定的實用性和參考價值。
For a class of series - wound active power line conditioner the design approach law of a new fuzzy integral sliding mode variable structure control is presented . this method adjusts power electronic switch in order to achieve anticipated balance volt , finally makes active power line conditioner not only possess good robustness of variable - structure control and decrease vibration to the most but also increase the steady state precision . series - wound aplc adopted this control method possesses good dynamic and steady state performance 針對串聯(lián)型有源電網(wǎng)調(diào)節(jié)器運用變結(jié)構(gòu)控制策略,調(diào)節(jié)電力電子開關模式,以獲得預期的平衡電壓,對串聯(lián)型有源電網(wǎng)調(diào)節(jié)器提出了模糊積分變結(jié)構(gòu)控制方法,使串聯(lián)型有源電網(wǎng)調(diào)節(jié)器既保持了常規(guī)滑??刂茝婔敯粜缘膬?yōu)點,又減弱了滑模控制的抖振,提高了系統(tǒng)的穩(wěn)態(tài)精度,使系統(tǒng)具有良好的動態(tài)和靜態(tài)性能,仿真試驗表明該控制策略是一種十分有效的控制方法。