減振能力 的英文怎麼說
中文拼音 [jiǎnzhènnénglì]
減振能力
英文
damping capacity-
This thesis tries to update the cmdsr system to achieve the characters below : real - time, better robust, higher recognition rate, non - special - man. considering the disadvantages of traditional improved spectrum subtraction speech enhancement, this thesis proposes the theory of fuzzy spectrum subtraction based on the fuzzy theory and improved spectrum subtraction speech enhancement ; as for the difficulties of detecting the endpoint of speech signal, the thesis gives the table of initial and the improved parameters, with which we can confirm the endpoints of mandarin digit speech ; the thesis puts forward two - level digit real - time speech recognition system, the first level is based on discrete hidden markov model which is linear predictive coding cepstrum ( lpcc ) and difference linear predictive coding cepstrum ( dlpcc ), the second level is based on formant parameters ; as for the realization of hardware, the thesis depicts the realization of every part of cmdsr based on the tms320vc5402 in detail ; as for the development of software, the thesis gives the software design flow chart of cmdsr, simulates the basic theory with matlab language and gives the simulation results
針對傳統的「改進譜相減法語音增強」參數設定單一、環境適應能力差的缺點，提出了一種利用模糊理論和「改進的譜相減法」結合的「模糊譜相減法語音增強」 ;針對語音信號端點檢測困難的特點，通過matlab模擬試驗，給出了能夠準確確定數碼語音端點的初始和改進參數表;提出了利用基於線性預測編碼倒譜參數和差分線性預測編碼倒譜參數相結合的離散隱含馬爾可夫模型進行第一級識別、利用共振峰參數進行第二級識別的兩級漢語數碼語音識別系統，在保證系統實時性的同時，實現連接漢語數碼語音識別系統識別率的提高;在硬體實現上，詳細闡述了基於tms320vc5402的連接漢語數碼語音識別系統各部分硬體設計;在軟體開發上，給出了連接漢語數碼語音識別的軟體設計各部分的流程圖，並對各部分進行了matlab模擬，並給出了模擬結果。Damping bearing is a kind of bearing with damping ring. it is not the same as traditional bearing not only on geometry but also on material. damping ring has many merits such as perfect abrasive resistance, good noise proof ability, good self - lubricating property, excellent resistance to impact and its life length is much longer
該類軸承為帶阻尼環的推力軸承，在結構和材料上跳出傳統框架，陰尼環具有減振、抗噪、自潤滑、耐磨、耐沖擊等功能，是傳統推力止推軸承壽命的數倍。The structure and operating principle of an air - charged split - type adjustable shock absorber was described, e non - linear parameterized mathematical model of this shock absorber ' s damping characteristics was established according to fluid mechanics theory and the main structural affection factors to shock absorber ' s damping performance, such as the diameter of piston valve orifice, the diameter of adjustable orifice, the initial volume of gas chamber, the diameter of piston rod, the inner diameter of oil pipe and so on, were analyzed by simulations
摘要通過分析一種分體式充氣可調阻尼減振器的結構和工作原理，運用流體力學理論，建立了該減振器阻尼特性的非線性參數化模型，模擬分析了活塞阻尼閥孔徑、阻尼調節孔徑、氣室初始體積、活塞桿直徑、油管內徑等主要結構參數對減振器阻尼性能的影響，通過試驗測試，得到了減振器樣件的阻尼特性及其可調范圍。Based on extensive investigation of construction technique history of chinese ancient buildings, the structure method, structure developing history and seismic behavior of chinese ancient timber structure buildings are analyzed in several respects of the structural system and form. through a series of experiments on constituent parts of chinese ancient timber building structure, including the tests on the corbels and brackets called dougong subjected to low cyclic reversed loadings, the tests on the wooden frame using the tenon - mortise joints as connections of column and beam subjected to low cyclic reversed loadings, the tests on vibration isolation effect of friction and slippage between column footing and their socle base, and a series of shaking table tests on a chinese ancient timber structure palace building mode under artificial earthquake at serving conditions, destroyed conditions and reinforced conditions, many valuable results of structures such as moment - curvature hysteretic loops of dougong structure and tenon - mortise joints under low cyckc reversed loadings, the static function, the seismic performance, energy dissipation, vibration reduction, energy - loss mechanism, nechanicalmode and failure mode were studied. aplenty of valuable parameters of the structure system were obtained, such as the natural period of structure, vibration modes, damping ratio, factor of vibration isolation, oscillate amplitude of ineitial accebration, velocity and displacement, magnitude of slippage, and the mechanism of structure failure and collapse etc. based on these research, the complete analysis of ancient timber structure under earthquake were carried out in which including mechanism analysis method, calculating mode, strength analysis of members and joints, strengthening methods for serving damaged ancient timber structure buildings were also taken into account
依照宋代《營造法式》建造了抬梁式殿堂木結構構件及結構模型，對中國古代木結構中的典型構造如：柱腳在礎石頂面平擱簡支、柱架榫卯連接、柱高不越間之廣、側腳、生起、斗拱等的構造機理及結構功能進行了量化分析和實驗研究： （一）通過木柱石礎靜摩擦試驗，測定了柱腳與石礎古鏡面間的摩擦系數及摩擦力隨上部結構荷載變化的規律； （二）通過單柱承載力試驗，測定了古建築中木柱的受力變形特徵、破壞模式、及模型材料的變形模量、極限承載力、極限變形等參量； （三）通過柱架低周反復荷載試驗，測定了柱架的抗側移剛度、柱架恢復力特性及滯回曲線、榫卯張角剛度及其變化規律、柱架及榫卯的極限承載力和極限變形、及榫卯減振參數； （四）通過斗?低周反復荷載試驗和受壓試驗，測定了古建築木構件與木構件間摩擦系數，斗?抗側移剛度，斗?恢復力特性及滯回曲線，斗?抗壓極限承載力及受力變形規律； （五）通過抬梁式殿堂間架模型振動臺試驗，測定了殿堂木構架結構自振周期，地震反應振形、阻尼特性及阻尼比；按結構分層特點對柱腳、柱頭和斗?層上的屋蓋的地震反應採用多點同步測量，對柱根滑移、榫卯變形、斗?的變形、復位、耗能減振參數等進行了定量分析。Presents the model proposed for analyzing the vibration characteristics of shrouded blades and their calculation method by employing a wave propagation theory and modal synthesis technology coupled with a finite element method from the view point it is possible not only to conduct frequency modulation of the shrouded blades of a gas turbine, but also to utilize the friction effects between them to dissipate energy, thereby attaining the aim of vibration alleviation, as shrouded blades have been widely used in the design of high - speed turbomachinery, such as modern gas turbines and steam turbines, and with the shrouded blades forming an integral whole in a centrifugal force field, the vibration characteristics of the whole ring of blades are different from those of a single isolated blade, and this makes it essential to take into account the integral effect of blade shrouds, concludes from the calculation examples and engineering application that the above approach is valid and correct along with the possibility of considerably reducing the scale of calculation and analysis, and points out it is necessary to take into consideration the coupled effect of the whole ring of blades while the dynamic characteristics of shrouded blades is being analysed
帶冠葉片不但能調頻，還可以利用葉冠之間的摩擦效應來耗散能量，達到減振的目的.帶冠葉片在離心力場中形成一整體，其整圈葉片振動特性不同於單個孤立葉片，需考慮葉冠的整體效應.利用帶冠葉片系統的循環對稱性，提出了採用波傳播理論和模態綜合技術，結合有限元方法研究燃氣輪機帶冠葉片振動特性的分析模型和計算方法.算例和工程應用證明了該方法是效性的、正確的，並可以大大降低計算分析規模.研究表明帶冠葉片動力特性分析時必須考慮整圈葉片的耦合效應It can reduce the harmonic or harmonic oscillation in public power net to take some effective measures by making use of this software, and finally reduce the power system accidents and cease time, improve power quality. it is wide application in the future
應用該軟體的分析結果採取有效防範措施，可以預防或減少諧波源進入公用電網，減少或降低諧波諧振，進而減少電力事故和停電時間，提高電能質量，應用前景十分廣闊。In this way, the cost of semi - active method will be cut and the damper was easy to be maintain
該方法簡單、方便、有效，能適應高速列車運行時對橫向減振力控制邏輯的要求。In addition, the characteristics of er fluids such as short response time, low power consumption, smoothness of operation and mechanical simplicity, er fluids have been considered for various applications in mechanical engineering for electromechanical couplingdevices such as an engine mount, shock absorber, clutch, er valve, robotics arm and several control system during the past decades, studies on er fluid materials were focused on those of inorganic oxides and organic polymers
電流變液作為一種新型智能材料，其力學、電學、光學性能可由外加電場連續調控，這一特性使得電流變液在液壓系統、減振裝置、印刷、光學以及機電一體化等領域具有廣闊的應用前景，成為仿生智能科學的首選材料之一。在過去的幾十年間，電流變液材料的制備主要集中在無機氧化物和有機聚合物。Adopting soft cable for hanging will reduce the effort made by coasting body ' s vertical vibration on the base of the washing machine to the maximum extent and lessen the interference of vertical vibration to gyroscopic effect of the coasting body to make it in balance and improve the vibration - avoiding capacity of the whole machine
採用軟索懸吊，可最大限度地減小慣性體垂直振動對洗衣機底座的影響，減少垂直振動對慣性體陀螺效應的干擾，使慣性體盡量保持水平擺動，提高整機的避振能力。Jacket is the most widely used offshore platform structural style. first of all, the paper summarizes the present achievements of dynamic analysis for offshore platform, and studies both the vibration isolation system for jacket and vibration - suppressed effectiveness. considering the style and character of jacket, and in order to make best use of dampers to reduce vibration, a damping isolation scheme, in which the damping layer is laid between the jacket cap and deck is put forward
本文在總結國內外對海洋平臺結構動力分析研究現狀的基礎上，針對淺海導管架式海洋平臺的型式與結構特點，研究了導管架式海洋平臺結構阻尼隔振體系及其減振效果，為了充分發揮阻尼器的耗能減振作用，提出了在平臺結構導管架端帽和甲板之間設置柔性阻尼層的新型阻尼隔振方案。Increases in magnetic field frequency decreases the capability of the dis - type mr fluid damper to reduce rotor vibration
隨著磁場頻率的增大，盤型磁流變流體阻尼器抑制轉子振動的能力減小。Comparing with passive control, active control is more complicated and it need large amount of energy, although its performance is better than other control me thods in theory. semi - active control is a new control method that its control rely on the structural responses or external disturbances, and its control devices can change working status to adapt the vary loads comparing with passive control. and it does not need the large amount of external energy supply
與被動控制相比，半主動控制的特點是能隨結構動力反應或外界載荷的變化及時調整控制狀態，使控制裝置的減振作用更好地發揮出來，因而其控制效果更顯著；與主動控制相比，半主動控制不需要外部巨大能源的保證，也不存在控制失穩問題，因而半主動控制已成為結構振動控制新的研究方向。Based on qualitative analysis and comparison of several options for suppressing transverse vibration on deck type steel plate girder of railway bridge, conclusions are made as follows : with static reinforcing, the vibration amplitude can be suppressed to some extent, but quasi - resonance of the bridge can not be avoided, moreover, the construction is inconvenient and costly. with option of two bridge connection, the effectiveness of vibration suppression is clear ( the damping ratio approaches 50 % ) and it is fairly economic and easy, however, the quasi - resonance of the bridge can not be avoided either. with dynamic option ( mtmd option ), the quasi - resonance of the bridge can be effectively avoided ( the damping ratio is up to 51. 38 % as tested in field ), moreover, the construction cost is low, and the construction is simply and convenient
通過對目前抑制鐵路上承式鋼板梁橋橫向振動的幾種方案進行定性的分析和比較，認為：靜力加固方案可以使橋梁振幅有所減小，但不能避免準共振現象的發生，而且工程造價較高，施工也不方便；兩橋連接方案減振效果明顯（減振率近50 % ） ，比較經濟也比較方便，但同樣不能避免準共振現象的發生；動力減振方案（ mtmd抑振方案）可以有效的抑制橋梁的準共振現象（現場試驗中減振率達51 . 83 % ） ，而且工程造價較低，施工簡單、方便。Furthermore, investigation of the source of noise and vibration is also an important issue. these problems can be solved in a direct and economical way with the correct approach to controlling their sources. this can be applied, for example, to techniques of train and rail construction, as well as wheel track mutual resistance
所以，本次捷運研討會特別訂定減振制噪之專題討論，邀請國內外噪音與振動之專家學者參與研討改善建議，亦邀集其他以輪軌系統建設之國家與城市共同分享心得，並期望各項先進科技與發展趨勢能納入本局未來捷運工程之努力方向。Results of these researches indicate that adaptive control can efficiently reduce system ' s influences caused by model ' s uncertainties, stochastic disturbances, and quantified measuring noises. meanwhile, adaptive control can help the steering system acquire excellent performances of power - assisted and portability characteristics ; the suspension system has a good performance of reducing vibration, and can improve dynamical character of a full vehicle
研究結果表明，自適應控制能夠有效解決模型的不確定性、隨機擾動和量測噪聲對系統的影響，使轉向系統具有良好的助力性能和轉向輕便性，懸架系統具有較優的減振性能，從而改善了整車動力學性能。At last the dynamics of trailer is analysed when trouble is take place including the lateral stability when the anti yaw dampers become ineffective, the ride index when airsprings have no air and the negotiation when the trailer runs on the curve the tilting actuator does n ' t work or work in the contrary direction
最後，論文分析了拖車在幾種故障工況下的動力學性能，包括抗蛇行減振器失效工況的橫向穩定性；空氣彈簧無氣工況的運行平穩性；曲線通過時傾擺作動器不動作和傾擺作動器反向動作工況拖車的動態曲線通過性能。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進行了力學建模簡化，並採用四端參數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，並利用matlab程序設計語言對響應比和功率流傳遞率進行了模擬模擬。提出了以優化系統參數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。The results in the study and experiments about vdw indicate that it has stable dynamic performance and powerful dissipation energy capability ; on the other hand, the result of calculation also shows that it can reduce vibration responses of structure effectively. it is obvious that vdw is a kind of energy dissipation device with perfect performance and application prospect as well
實驗表明，粘滯阻尼墻具有穩定的動力性能和很強的耗能能力；計算分析實例也說明粘滯阻尼墻可以有效地降低結構的振動反應，是一種性能優越、運用前景廣泛的消能減振裝置。Expansion joint was one of the most important parts of pipe system. it can close the vibration off in pipe system and absorb the displacement caused by stress, axial force, transverse force and temperature grads. based on fea parametric analysis, ansys was used to study the mode and harmonic response of expansion joint in this article
波紋管膨脹節是管系中的重要組成部件，它不僅能夠吸收由壓力、軸向力、橫向力、彎矩以及溫差等原因引起的位移，還可作為隔振元件用於管系的減振隔振。Compute the ability that reducing vibration of six measures. believe that setting gas pressure accumulator is the effective measure
在此基礎上對六種措施的減振能力進行了模擬，認為安裝氣壓式蓄能器是比較有效的措施。分享友人