非穩態運動 的英文怎麼說
中文拼音 [fēiwěntàiyùndòng]
非穩態運動
英文
astable operation- 非 : Ⅰ名詞1 (錯誤) mistake; wrong; errors 2 (指非洲) short for africa 3 (姓氏) a surname Ⅱ動詞1 ...
- 穩 : 形容詞1 (穩定; 穩當) steady; stable; firm 2 (穩重) steady; staid; sedate 3 (穩妥) sure; rel...
- 態 : 名詞1. (形狀; 狀態) form; condition; appearance 2. [物理學] (物質結構的狀態或階段) state 3. [語言學] (一種語法范疇) voice
- 運 : Ⅰ動詞1 (物體位置不斷變化) move; revolve 2 (搬運; 運輸) carry; transport 3 (運用) use; wield...
- 運動 : 運動[舊時用語] arrange things or get things done through pull
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The dynamics model is made up to numerically study the movement caused by the friction drive principle. then, the movement is divided into basic vibration state and micro vibration when the state changes according to the simulation to demonstrate the cause of the movement of friction drive
在實現模擬的基礎上,利用非線性振動力學,將摩擦力驅動原理的驅動過程劃分為基本振動與狀態切換非穩定振動階段,論證了微操作球出現的典型運動現象產生原因。Aiming at such problems in combustion system of homemade middle and miniature boiler, as a complex system with the character of dead zone, time variation, serious non - linearity, large time delay, coupling and a lot of disturbance, this paper presents a new set of optimal control resources. by using well - matched control method on system, stable automatic running is realized. having the serious divulgence coals difference a lot from each other in character, instability of chemistry, value of lowest emission of heat, home - made boiler controller is not at all ideal. instead of traditional model that controls the ratio based on proportional control or with the correct signal of the amount of oxygen, this paper, combined with intellect control theory - - fuzzy control and self - optimizing concept, propounded a kind of fuzzy self - optimizing controller to be used in air supplying system of the boiler, and expatiates on the idea of dividing the control process into two parts, dynamic and static to realize, thus meets the demand of homemade boiler economic running
本設計針對國產中、小型電站鍋爐燃燒系統參數時變、嚴重非線性、干擾因素復雜、耦合嚴重、模型不易確定的特點,提出多變量協調控制方案,解決了系統可控性差,難以實現穩定自動運行的問題;在此基礎上,改變以往以煙氣含氧量控制送風的傳統模式,針對國產電站鍋爐設備主體及一、二次送風迴路泄露嚴重,煤種混雜、成分不穩定、燃燒發熱值低、燃燒效率不高等問題,應用智能控制理論中的模糊控制技術,結合自尋最優控制的思想,設計了一種模糊自尋優控制器,應用在電站鍋爐送風控制系統上,並闡述了動靜態兩種實現途徑,通過在線優化風煤配比,實現最佳經濟燃燒,切實保障了鍋爐的經濟運行。3. for the two - region model of one - dimensional solute transport through heterogeneous soils considering scale - dependent dispersion and immobile region under steady state flow, the numerical model is obtained by characteristic finite element method
對于穩態水流條件下,非均質土壤中考慮水動力彌散尺度效應以及不動水體存在時,一維溶質運移的兩區模型,建立了相應的特徵有限元數值模型。When the bodies move in the upper ionosphere, there exist series of complex non - steady interactions
空間飛行體在外大氣層運動時,和周圍等離子體之間存在著復雜的非穩態相互作用。This paper takes a high quality servo motion controller as the core component. it discusses the track interpolation control principle, its algorithm and develops various sub - programs by dynamic link libraries. first, it designs a nonlinear pid controller based on those sub - programs to solve the contradiction between stabilization and quickness in order to improve the controlling effects
本論文以高性能伺服運動控制器為核心元件,在論述軌跡控制的插補原理及其演算法實現流程並使用動態連接庫編制出各種插補功能子程序的基礎上,首先設計了一種非線性pid控制器,以克服穩定性和快速性之間的矛盾,達到改善控制效果的目的,並通過模擬實驗對其響應效果加以驗證。A variety of mathematical models based on continuous equation and the momentum equation and many solutions partial differential equation value computational method in the open canal turbulent flow solution, still could widely apply and yield the satisfactory result
但是,非穩態的navier - stokes方程對于明渠水流的瞬時運動還是適用的,以連續方程和動量方程為基礎,建立的各種數學模型和許多求解偏微分方程的數值計算方法在明渠紊流的求解中仍能廣泛應用。But self - organized criticality ( soc ) is a kind of weak chaos nature : " edge of chaos " ( non - stable steady state ), appearing only in the specific space - time region in specific stage at self organization process of crustal movement
「自組織臨界態」 ( soc )是一種弱混沌性質的「混沌邊緣態」 (非穩定定態) ,只出現于地殼運動自組織過程特定階段中的特定時空域。In this paper, we study inversionless lasing of frequency up - conversion in an open v - type system with incoherent pump. making theoretical analysis and numerical calculation by density - matrix equations of motion, we derive the conditions for the onset of lwi and discuss the effects of the parameters of the system, the detuning of driving field and probe field on the gain, and discuss nonlinear effect in the frequency up - conversion regime. we also give stability and transient analysis
本論文研究了具有非相干泵浦的開放v型系統頻率上轉換無粒子數反轉激光,利用密度矩陣運動方程,通過理論分析和數值計算,得出該系統產生無粒子數反轉激光的條件,討論系統各參數的變化和驅動場與探測場的失諧對激光增益、色散和粒子數差的影響,還討論了頻率上轉換區域的非線性效應,分析了增益的穩定性及系統的瞬態演化過程。The nonlinear motion of the flight quasi - steady state is as a basic motion to be analyzed and simplified to formula the ideal state, output and control variables, and to produce its linear model
以準穩態運動為基準,對其運動非線性分析,並適當簡化,生成準穩態運動的期望狀態、輸出、控制和小擾動線性化模型。In the paper, active control to rotor vibration with sma is studied : 1 ) the material performance of sma, especially the coupled relation of strain, stress and temperature, is studied in nonlinear coupled thermoelasticity theory and the linear result is modified ; 2 ) the nonlinear dynamic behavior of rotor system with sma bearing is studied in the nonlinear theory and the dynamic stability theory and the deference of the soft / hard nonlinear system is pointed out
1 )運用非線性熱彈性耦合理論研究記憶合金材料的力學性能,特別是應力、應變和溫度三者之間的耦合關系,改進了原有的線性結果。 2 )運用非線性理論和運動穩定性理論研究帶有記憶合金支承的轉子系統在非定常狀態的非線性動力學行為,指出了軟、硬非線性系統的區別。A special type of unsteady motions which bear a resemblance to plane wave solutions of the linear theory of elasticity can be constructed.
一種特殊類型的、和線性彈性理論中的平面波解有點相象的非穩態運動可以建立起來。But in fact, it is difficult for a rotor to steadily and nicely rote at a certain speed. people have been expecting to identify the unbalance quickly and exactly with the information obtained from the rotors operating at unstable speed
而實際當中,轉子很難準確穩定在一個轉速下運行,人們一直希望能通過轉子在非穩定轉速運轉狀態下獲得的振動信息,快捷的確定轉子的不平衡量,即瞬態平衡,但目前尚未有成熟可行的辦法。The paper studied controlling rotor vibration with the super - elasticity of sma and sfd, set up the new equation of sys tern vibration according to the stress - strain curve of sma in super - elasticity state, used the nonlinear theory and the dynamic stability theory to study the vibration of rotor controlled by sma, discussed the stability condition of the system, obtained the relationship of system parameters when bifurcation was appeared, supposed a method that improves the stability of rotor system and restrains vibration amplitude though changing parameters, and finally validated the effect of restraining vibration of the improved system through emulation
摘要研究利用形狀記憶合金的超彈性和擠壓油膜阻尼器控制轉子振動,利用形狀記憶合金在超彈性狀態下的應力應變曲線,建立了新的系統振動方程,運用非線性理論和運動穩定性理論研究轉子在形狀記憶合金控制下的振動狀態,討論了系統的穩定性條件,獲得系統發生分岔時系統參數之間的關系;並提出了通過改變參數來提高系統穩定性和抑制振幅的方法,最後通過模擬驗證了改進后的系統振動抑制效果。The results show that there exists such nonlinear dynamical phenomena as chaos ang quasi - period movement when the rotational speed, mass eccentric and a synthesizing parameter of the system change. from different point of view, the chaotical phenomenen induced by double period bifurcation is found. in this paper, the dynamical model of bearing - elastical rotor with a cross - section of crack is estabilished
結果表明,在這一非穩態油膜力模型下,在轉速、無量綱偏心及一包含諸多因素的綜合參數的變化過程中,在很大的范圍內,系統運動都會出現由不斷倍周期分岔導致的混沌現象和概周期運動。According to the finite element method result, the parametric vibration of cables in cable - stayed arch bridge becomes prone to be exhibited. then a model of non - linear parametric excitation vibration coupling the stayed cable and the girder, namely, the mode of cable - stayed beam, is proposed in the thesis. and the nonlinear dynamical
3 、首先利用有限元分析方法,得出了斜拉索發生參數共振的可能,然後建立了斜拉拱橋拉索-橋面耦合參數振動模型,即索-梁組合結構模型,推導了索-梁組合結構非線性運動方程,利用多尺度方法研究斜拉索的參數共振和亞諧波共振,並對穩態解的穩定性進行了分析。Based on the nonlinear equilibrium equation of the cable - cabin system, a stationary model for position control of the flexible cable - cabin system with large span is established through optimal strategy on the distribution of the driving forces. thus the unlooped control of movement of the cabin is realized by adjusting the lengths of the cables coordinately
在建立非線性艙索系統靜平衡方程的基礎上,採取使驅動力均勻的優化配置策略,建立了大跨度柔性艙索系統的穩態位置控制模型,實現了基於索長調整的饋源艙開環運動控制。It is constructed that radial impact and rubbing dynamics differential equations of the rotor system having the nonlinear rigidity on the unsteady and non - linear oil film. the bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of nonlinear rigidity, rotor rotating speed, eccentric mass is analyzed, in the numerical value analysis method. the bifurcation diagrams, maximum lyapunov exponent diagrams, poincar maps, phase plane portraits, trajectories of journal center, time - history curve, amplitude spectra diagrams of the rotor motion are used
( 2 )建立了具有非線性剛度的轉子系統在非穩態非線性油膜力作用下的徑向碰摩動力學微分方程,並應用含高階余項的非線性動力方程的線性化數值法研究了此類系統響應的復雜動力學行為,利用轉子響應的分岔圖、最大lyapunov指數曲線、 poincar截面映射、時域波形、相軌線、軸心軌跡、幅值譜等圖形分析了系統響應的周期運動、擬周期運動、倍周期分岔、混沌等運動形式的轉化與演變過程,重點研究了非線性剛度、轉子轉速、偏心質量等系統參數對碰摩故障轉子系統的分岔和混沌行為的影響。Numerical models were used to study how the infiltration into a slope varies with the rainfall intensity, rain fall duration, soil properties and how the infiltration influences the stability of a slope. a numerical program is coded to solve the transient seepage field by using the finite element and finite difference methods based on the saturated - unsatured soil seepage theory. a model for considering the variations of soil weight and shear strength is created / constructed and the corresponding program is coded
本文針對受降雨影響顯著的非飽和殘積土土坡,運用飽和?非飽和土壤水分運動的理論和二維非穩態滲流有限元模型,模擬雨水入滲引起的暫態滲流場,將計算所得到的暫態孔隙水壓力分佈用於考慮了基質吸力影響的土坡穩定安全系數的計算當中,建立了考慮非飽和土土坡從雨水入滲到出現滑坡危險全過程的計算模型。Base on the kinematics relation of ctp, the corresponding reynolds equation or average reynolds equation, fluid film thickness equation under qusi - stable state in polar coordinates, balance equations of load and moments under full - film contact and partial - film contact states were set up respectively. these model equations were calculated by the finite difference method, and the instantaneous 3 - d distribution of fluid pressure and the slurry film was simulated by the matlab software
根據ctp的運動關系,分別建立了極坐標下,全膜接觸工況時的非穩態牛頓流體在ctp過程中的一般reynolds方程、流體膜厚方程、載荷平衡方程和轉矩平衡方程,以及部分膜接觸工況下的平均reynolds方程、平均膜厚方程、接觸壓力方程、總載荷平衡方程和總轉矩平衡方程。Detailed numerical studies are presented for the transitional dynamics of the steady - state motions of those systems with the variation of the excitation and the system parameters, with the illustrations given for rich nonlinear phenomena, such as the bifurcations of periodic vibro - impact motions and the chaotic vibro - impact motions. in chapter 5, the existence of the periodic vibro - impacts, as well as the corresponding stability is analyzed for an oblique - impact vibrating system composed of a spring - pendulum and an oscillator. when the system damping and the tangential friction
結果表明,在無阻尼、無摩擦的簡化情況下,周期斜碰撞振動運動具有嚴格的存在條件,並隨激勵參數的變化出現復雜的分叉和穩定性的反復切換;運動阻尼可在較大參數范圍內對非穩定運斜碰撞振動系統動力學研究( 5 ) ( 6 )動鎮定;相對而言,切向摩擦對系統穩態特徵的影響不大。分享友人