被動阻尼 的英文怎麼說
中文拼音 [bèidòngzǔní]
被動阻尼
英文
passive damping-
As a result, the electromagnetic field intensity is changed accordingly and fluctuating current in the damper coil is created. damping force is mostly produced because of the phase difference between fluctuating current and displacement of rotor. the formulas of fluctuating current and damping coefficient are deduced theoretically, and the calculated results are consistent with the experimental results
通過分析發現電磁阻尼器線圈內由於轉子渦動時變化的磁場而產生的波動電流與轉子位移間的相位差是產生阻尼的主要原因，推導了波動電流、阻尼系數的計算公式，並通過實驗展示了被動式電磁阻尼器的阻尼效應。Passive damping of sma hybrid composite lamina
混雜復合材料單層的被動阻尼Sma damper used for civil structure passive control
阻尼器在土木結構被動控制中的運用In addition, active constrained layer damping ( acld ) has attracted scholar ' s interests because it has the advantages of passive control and active control. the mechanism of vibration control of acld and the models of how to deal with the viscid - electric material are introduced. the finite element model of acld with ghm model is established in this paper
此外，主動層阻尼結構（ acld ）由於兼有被動控制和主動控制兩者之優點也引起了國內外學者的興趣，本文給出了主動層阻尼結構（約束層採用壓電材料）抑振的工作機理，介紹了處理粘彈性層（ vem ）的幾種模型，並採用ghm模型建立了主動層阻尼結構的有限元模型。Compared with the passive car suspension, the semi - active car suspension system with the intelligent mr damper can control the damping force automatically with the computer control and then enhance the ride comfort and handling stability of the car effectively
與傳統的汽車被動懸架系統相比，裝有磁流變阻尼器的半主動懸架系統，可以根據路面狀況和車輛運行狀態，在計算機的控制下自動調節阻尼力，大大提高了汽車乘坐的舒適性和行駛安全性。Theoretical analysis and computer simulation studies show that performance comparable to that of electro - control active damping suspension systems can be achieved with the hydraulic network model which can self - adaptingly adjust the damping of suspension to realize the optimal control by virtue of response of vehicle. in chapter 5, the effects of time - variant factors in the new active damping suspension system on reduction are investigated
第五章研究了主動阻尼系統中的時變因數對減振系統的減振效果的影響（包括路況、車速、載重阻尼油的粘度系數隨油溫變化而引起的變化，油液的彈性模量等） ，並分析了模型簡化時一些被忽略的非線性因數對系統性能的影響。Keeping the self - adjusting of damping behavior when the controllability of semi - active damping is disable, or saving the unnecessary energy when the continuous modulation of damping is not needed, the composite structure for self - shifting between passive and semi - active structure is presented
摘要當磁流變減振器半主動功能失效時，為保持其阻尼性能仍具一定的自調節性或實際路況不需無級調節時，節省不必要的能耗，提出用於車輛半主動懸掛系統的被動與半主動功能自動切換的復合結構磁流變減振器。Based on the special property of magnetic fluid ( mf ), we fill the magnetic fluid into the working clearances of the servo valve torque motor. one side, the magnetized magnetic fluid can exert a damping torque on the torque motor armature and reduce vibration of the armature ; on the other side, it can improve the magnetic circuit efficiency of the torque motor because of the magnetic fluid ’ s larger magnetic permeability
基於磁流體所具有的特殊性質，將磁流體添加到伺服閥力矩馬達的工作間隙中，一方面磁流體被磁化后可增大銜鐵的阻尼力，減少振動;另一方面由於力矩馬達氣隙中磁導率的提高，使氣隙中的磁通量增大，力矩馬達的磁路效率和輸出扭矩將增大，因此可以提高力矩馬達的固有頻率和伺服閥的響應速度。Fist ly, use mass equivalent method to predigest the original rotor system. secondly, use transfer matrix arithmetic to have finished the relative program to calculate the critical speed of flexible multi - tray rotor bearing system by matlab language. thirdly. finish program the unbalance response using riccati - transfer matrix arithmetic and finity buck arithmetic. fourthly, answer to the high vibration of uncontroled system when cross the critical speed, come out to adopt changing clearance damper bearing to control the viberation
本文對多柔盤轉子-支承系統的振動現象做了以下初步探索：用質量離散化方法把原轉子系統簡化；採用matlab語言編制了對傳遞矩陣法計算多柔盤轉子-支承系統的臨界轉速；用matlab語言對riccati傳遞矩陣法和有限元法編制了程序計算系統的不平衡響應；並針對其過臨界轉速時振動較大的現象，提出採用變間隙控制油膜剛度和阻尼，從而使原系統的在特定轉速（臨界轉速）的一段范圍內不平衡響應減小；並從被動控制與主動控制兩方面進行數值模擬，取的了較好的控制效果。The damper is mounted on the free end of the rotor. the experiments done show that the oil whip can be good damped by the passive electromagnetic damper
在理論計算的基礎上還進行了實驗研究，在不停機的條件下，通過被動式電磁阻尼器成功地在線消除了系統的油膜振蕩。The idea of passive control is to utilize additional facility within a structure to dissipate or absorb a large portion of the seismic energy, which has been applied to practical engineering extensively since its control devices - dampers are convenient and it does not need large energy supply and the structural system identification. now the main devices which have been developed in the passive control may be grouped into the following types : viscous, visco - elastic, metallic and frictional, and tuned mass damper ( tmd ) and tuned liquid damper ( tld )
被動控制通過附加阻尼裝置耗散或吸收大部分的地震動能量以達到減振的目的，由於其控制裝置簡單，不需要外界能源輸入和系統識別，容易在工程上實現並已得到廣泛的應用；目前被應用於結構被動控制的阻尼器主要有：粘滯型、粘彈型、摩擦型、調諧質量阻尼器（ tmd ）和調諧液體阻尼器（ tld ） 。The experimental results on seismic simulator verify that the mr damper in the passive off mode provided the information on the minimum effectiveness of the damper if the external power was cut off, in which the seismic responsesof the tall building and podiun structure were reduced. when the mr damper worked in the six kinds of semi - active logic control methods, the seismic responses of the two building were further reduced compared with those when the mr damper worked in the passive off mode
地震模擬振動臺試驗結果表明： mr阻尼器的passiveoff方式是外部電源被切斷時的最低控制效果，能消除原結構地震反應的鞭梢效應，並使主樓和裙房的地震反應有一定的減少，六種半主動邏輯控制方法的減振效果比passiveoff方式更好，多mr阻尼器控制的效果優于單mr阻尼器。Traditional approach to raise damping is installing passive damper between cable and deck, such as viscous ( oil ) dampers
目前增加拉索阻尼的常用辦法是在拉索和橋面間安裝被動阻尼器，如油阻尼器。Some design considerations for pure passive and self - sensing active constrained layer damping are discussed
並分析了主被動阻尼控制結構的特點和設計中應崔意的問題。In phase 1, the dynamical properties in the time and frequent domains of the simple, two - degree - of - freedom models of passive, " sky - hook " and " ground - hook " damping suspension systems are examined by laplace transform
從理論上分析了被動阻尼、 「天棚」阻尼、 「地棚」阻尼懸架系統的時域和頻域動力學特性。Considering the nonlinear characteristic of dampers, computing simulation and analysis of the seismic response for high efficient damper suitable for muti - structure system ( hedms ) and system parameters " influence on control effect have been done
考慮阻尼器的非線性滯回特性，對兩結構高效被動阻尼控制體系（ hedms ）的地震反應及體系參數對控制效果的影響進行了模擬分析。Abstract : in this paper, recent research limitations of seismic control method of civil engineering structures are examined. and some new suggestion on developing passive damping seismic resistance related to the use of smafhc composite structures are proposed
文摘:對目前土木工程結構抗震設計方法的局限性進行分析，並就發展smafhc復合材料結構的被動阻尼抗震體系提出一些新的建議和設想。Hamilton ' s principle are used to obtain equations of motion, which are discretized using finite element method. the frequency dependent damping of viscoelastic layer is modeled using the golla - hughes - mctavish ( ghm ) method and the system is analyzed in the time domain. ghm increases the size of the original system by adding fictitious dissipation coordinates that account for the frequency dependent damping
本文採用ghm模型描述粘彈性阻尼材料的本構關系，根據哈密頓原理分別對附加主動約束阻尼層結構（ acld ）和主被動阻尼分離結構（ acupcld和acopcld ，其中acupcld結構是將壓電作動層貼于粘彈阻尼層的下面， acopcld結構是將被動約束層和壓電作動層分別貼于梁的上下表面）的梁結構建立了有限元模型，進而得到系統控制狀態方程。Usually only select states are available and output feedback is used. it is shown that output feedback, while not as effective as full state feedback, is still able to damp vibration. thirdly, virtual vibration measurement and control instrument is developed using lab view and homemade daq, then experiments are performed to validate the conclusion of analysis results
最後，為了驗證在理論分析和數值模擬中得到的結論，利用虛擬儀器軟體labview和國產數據採集板開發了虛擬振動測控平臺，然後對附加主被動混合阻尼的懸臂梁結構，實現了結構振動控制，實驗結果表明主被動阻尼分離結構對低階模態振動具有更顯著的控制效果。The automotive semi - active suspension systems, which consist of passive springs and active dampers with adjustable damping force for different road conditions and automobile running conditions, are the most popular automotive suspension systems due to the active suspension ' s high cost and passive suspension ' s limited performances
鑒于汽車全主動懸架系統高額的價格和被動懸架性能上的不足，由被動彈性元件和主動阻尼器構成的半主動懸架越來越受到相關研究機構的關注，並逐漸成為研究熱點，也受到全球汽車製造商的青睞。分享友人