自由振動 的英文怎麼說
中文拼音 [zìyóuzhèndòng]
自由振動
英文
free oscillation- 自 : Ⅰ代詞(自己) self; oneself; one s own Ⅱ副詞(自然;當然) certainly; of course; naturally; willin...
- 由 : causereason
- 振 : 動詞1. (搖動; 揮動) shake; flap; wield 2. (奮起) brace up; rise with force and spirit
- 自由 : freedomliberty
- 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
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Any system capable of a free vibration without external force is a counter example, e. g. a wire in the piano.
任何一個無外力而能自由振動的系統就是一個反例,譬如鋼琴中的一條鋼絲。Despite the moon ' s rotational and orbital periods being exactly locked, we may actually observe about 59 % of the moon ' s total surface with repeated observations from earth due to the phenomena of librations and parallax
盡管完全地被鎖的月亮的回轉而軌道的期數,我們由於振動和視差的現象可能實際上用來自地球的重復的觀察觀察大約59 %月亮的完全表面。Two vibrating motors or vibration generator are installed on the two sides of the screening frame and circumrotates widdershins to make it rotate in - phase in line with in - phase chasing principle, the screen vibrates with beeline, the materials are cast and screened continuously
本系列篩砂機是由兩個振動電機或者激振器安裝于篩框兩側,並反向旋轉,根據自同步追逐原理使其做同步轉動,使篩體做直線振動,物料被連續拋起並被篩分。Low frequency micro - vibration causes the micro - fluid to produce uniform dispersion and injection which carried out a hydrophobization treatment on the inner wall of micro - nozzle, thus eliminated the spontaneous flowing of micro - fluid inside the micro - nozzle due to wet ting effect so as to let the micro - injection be provided with a digitalized and volume controllable character
壓電陶瓷低頻微振動使得微流體產生均勻的離散和噴射;對微噴嘴內壁進行疏水化處理,從而消除微流體由於濕潤作用在微噴嘴內部的自發性流動,使得微噴射具有數字化量可控的特徵。It ' s proved by the simulation result that, the fuzzy logic model reference adaptive controller adapts the change to the grand crutch force well, which is brought from the vehicle pitch and vertical vibration during the brake process, and the change to the slippage ratio which is near to the perfectness
模擬結果證明,模糊模型參考自適應控制器對于在制動過程中由於車輛前傾和垂向振動引起的地面支承力的變化有較好的自適應能力,制動過程中輪胎縱向滑移率的變化更趨近於理想變化。Electron gun is the foremost parts of twt, it can produce electron beam with a certain shape and current, in order to guarantee the reliability and security of work, it ’ s design have to meet to the requirement not only of electric parameter, but also all kinds of subsidiary characteristics such as filament pyrogenation efficiency, warm up time, shape size, pole space capacitance and the ability to be able to bear the press and all kinds of rigorous run conditions such as high temperature, high humidity, low air pressure, strong vibration and great strike
由於行波管的大功率和高頻率等特性,目前還沒有任何其他的器件可以代替。行波管是應用高頻電磁場與電子注進行互作用的機理進行工作的,而電子槍是行波管中產生電子注並使它成型的基本部件,電子槍的結構設計決定了槍體自身必須具有良好的抗振可靠性,否則結構發生共振或振動位移過量,就會導致行波管的失效。因此對行波管電子槍的研究具有非常重要的意義。The cable tension plays an important role in the construction control and long - term monitoring of cable - supported structures. the engineering implementation of a vibration - based cable tension evaluation is mostly carried out based on the taut string theory where the cable tension is estimated from measured natural frequencies by use of a simple explicit formula
振動法測索力廣泛應用於索結構的施工控制和健康監測,其原理是基於弦振動理論:索拉力與自振頻率之間存在簡單的關系,因此可以由實測的自振頻率計算得到索力。With the raised of resource global demand, the company has initiated a program for expansion of pu sieve - plates capacity for mine companies in the world
8 .由於聚氨酯二次振動的特點,鑫發聚氨酯篩板具有自清理作用,因此篩分效率高。Stay cable, which is one of the important components in cable - stayed bridges, is susceptible to environmental excitation because of its small weight, large flexible, low damping, then the various vibration is induced, such as vortex - induced vibration, wake galloping, rain vibration, buffeting as well as parametric - induced vibration etc. in this paper, the vibration property of stay cable has firstly been introduced
斜拉索是斜拉橋的重要承力構件,由於拉索自身的質量輕、柔度大、阻尼小,在外界激勵下,易發生各種振動,包括渦激振、尾流馳振、風雨振、抖振以及參數振動等。Based on the mode experment, we research the vibration property of the sonar dome with its fixing manner and find a manner for control under water self - noise near the sonar. because of the similitude between mode and real sonar dome, the result is useful for sonar design
本文在導流罩的相似縮比模型試驗的基礎上,討論不同安裝連接方式對導流罩振動特性的影響,探討通過改變導流罩的振動特性降低聲吶自噪聲的技術途徑.由於模型與實體存在相似關系,試驗分析結論對實際應用具有一定的指導意義Hull of this machine is designed in line with flow type of whirlwind dust catcher : to separate dust with large size granule firstly, then remove fine dust with filtering bag. the revolved nozzle will burst back - blow current from top to lower place periodically to force the bag to expand, shake off dust on the filtering bag which enhances service life of filtering bag and assuring dust removing effect
該機機殼按旋風除塵器流型設計,將大顆粒粉塵首先分離出來,細微粉塵由濾袋清除旋噴管周期性地向濾袋自上而下的噴出反吹氣流,迫使濾袋膨脹振動抖落濾袋上的積塵,提高了濾袋壽命,保證除塵效果The definition of the movement is composed by the forced vibration and self - excited vibration is presented, and verified
提出微操作器的粘滑運動由受迫振動和自激震蕩合成的思想。Piezoceramics have been used successfully for many years in the field of vibration control, owning to its high forces into the range of kilo - newtons and short reaction times in the order of a few microseconds
壓電材料由於其自身的壓電效應和逆壓電效應而被製作成壓電傳感器和壓電驅動器來對結構的振動進行控制。2. the vibration reliability plays a critical role during normal work stage of the go am, for the characteristic of high speed
2 、在自動機正常工作階段,由於其高速運轉的特性,決定了振動可靠性的突出位置。Secondly, this paper develops a coupled model between ice and structure after knowing the constitutive behavior of sea ice ; focus on the effects of wing cracks to the coupled vibration. and the stability of steady state vibration is also discussed qualitatively
把冰激直立結構穩態振動定性為由於海冰的非線性力學性質導致的非線性振動,證實了穩態自激現象的存在,提出了海冰的微裂紋損傷行為在穩態自激振動中起到控製作用。Since 1960s, the mechanical strength reliability and structural system reliability, whose main failure modes are fatigue and service life, has achieved a great deal of development and been applied to engineering machine, aeronautical and astronautical engineering, electric apparatus, bridges, ship, civil engineering etc. with the developing of space technology and tendency of machine towards high speed, precision, automation, one realizes the importance of mechanism reliability based on the accuracy of motion, for the errors of mechanism occurred more often than that of structure, especially in the field of aeronautical and astronautical engineering and operate system of weapon
上個世紀60年代以來,以疲勞、壽命為主要失效模式的機械強度可靠性、結構體系可靠性研究得到了很大發展,並迅速應用於工程機械、航空航天、電器設備、橋梁、船舶、土木工程等。隨著空間技術的發展以及機械的高速精密化、自動化發展,人們逐漸認識到以機構動作參數的準確可靠為主要指標的可靠性問題日益突出,因為在很多機械上機構的故障多於結構的故障,尤其是在航空航天及武器操縱系統方面。由於這些機構的運轉特性,振動可靠性的研究亦佔有突出的位置。Due to the existence of unbalance self - force in high - speed rotating mechanical device, the vibration accompanying with running machine usually causes noise, which reduces the machine performance or damage the machine
高速旋轉機械由於自身不平衡力的存在,在工作時使機器產生振動,這個振動會產生噪聲,並降低機器性能,甚至損壞機器設備。Self - aligning clutch release bearing is a kind of bearing with stamping encloser and sealers. perfect hermitically construction can prevent sewage from invading. this bearing a changed from inner revolution into outer revolution and diaphragm spring in the bearing can make it self - align. this bearing can reduce vibration & noise and has long life length, light weight and abundant lubrication
該類型產品為自調心離合器分離軸承,軸承帶沖壓外罩,兩面帶密封圈,能很好的防止污物進入軸承內部,軸承由外圈旋轉改為內圈旋轉,具有膜片彈簧與軸承自調心的功能,潤滑充分,減少振動、降低噪音、重量輕、使用壽命長等特點。It will exert resistance and damping force to the torque motor armature, so that the dynamic performance, especially the stability, of flapper - nozzle servo - valve can be improved. the self - excited oscillations and noise can be removed. at the same time, as magnetic fluid has a higher magnetic permeability, the efficiency of torque motor magnetic circuit can be improved
由於磁流體具有的較大磁導率和較大的磁化強度,把磁流體添加到伺服閥力矩馬達的工作氣隙中,可提高伺服閥力矩馬達的磁迴路效率,增加伺服閥的阻尼,從而改善噴嘴擋板伺服閥的動態特性,抑制及消除其自激振蕩和噪聲。Secondly, the performance of the acousto - optic steering system is deteriorated as a result of the coupling because of nonlinear of quadrant detector and the pointing error introduced by satellite platform vibration. for this problem, this paper introduces the model reference adaptive control system, and presents the perfect model. the model reference adaptive controller is designed to force the output of the acousto - optic steering system following the output of the perfect model to improve the system performance
其次,針對聲光偏轉系統由於器件的非線性造成的耦合和平臺振動造成的指向誤差導致系統性能惡化問題,引入了模型參考自適應控制系統,提出了理想的模型,設計了模型參考自適應控制器,強迫性能惡化的聲光偏轉系統的輸出跟隨理想模型的輸出,使其性能改善,利用超穩定性理論確定自適應參數以保證系統的穩定性。分享友人