瞬時動態 的英文怎麼說
中文拼音 [shùnshídòngtài]
瞬時動態
英文
transient behavior-
Based on a duralumin flexible beam with piezoelectric films attached, distributed parameter modal described by partial difference equations is builded, and then turned into a set of two order systems with the method of modal analyse. state feedback control and independent modal control is investigated. and simulation of the closed - loop system with thest two methods is performed in matlab
並用模態分析的方法,將系統的偏微分方程模型轉化成了模態模型;研究了狀態反饋和獨立模態方法;進一步完善了軟體界面以及軟體功能;在實際系統中,應用狀態反饋演算法,有效抑制了懸臂梁在受到外界瞬時脈沖擾動和激振引起的一階、二階模態振動。Intermodulation suppression for fh ( frequency hopping ) receiver is designed by selecting the intermediate frequencies and changing group of filters, local oscillation ( lo ) frequency, bandwidth of lo frequency under the condition that receiver configuration, sensitivity, dynamic range, instantaneous bandwidth and precision of frequency measurement are fixed
摘要針對跳頻接收機的體制和靈敏度、動態范圍、瞬時工作帶寬、測頻精度等設計參數,通過改變預選器組成、本振頻率和本振帶寬,分析接收通道的中頻選取原則,以實現跳頻接收機的互調抑制設計。This testing system is designed according to the germany standard, to test many dynamic parameters in the moment of ignition time. such as the primary coil current, secondary coil current, high voltage and time signal
本文研製的測試系統依照德國標準進行設計,實現對點火瞬間產生的初級與次級線圈電流、電壓及時間等動態參數的測試。The characteristics of speech signal have caused the difficulty of speech recognition, these characteristics include changefulness, dynamism, instantance and continuity etc. the process of computer recognition for speech and the identification process for speech by a person are basically consistent
語音信號本身的特點造成了語音識別的困難,這些特點包括多變性、動態性、瞬時性和連續性等。計算機對語音識別的過程和人對語音的識別過程基本上一致。The system has 6. 8mhz digitalizing bandwidth and 70db instantaneous dynamic range, which can be obtained by using rf / if converter vxi3570, high precision digitalizer e1437a and proper signal processing arithmetic
系統數字化帶寬設計為6 . 8mhz ,選用rf if變換模塊vx13570 、高精度數字化儀e1437a和適當的信號處理演算法可獲得70db以上的瞬時動態范圍。Since the departing process of fire work departing installation is a highly nonlinear transient dynamic process, it relates to many speciality field, and the characteristic of the material is very complex under the highly rate and highly pressure distortion, the design methods and the design formulae by experience which has been used for a long time are very limited, the facter which truly affect the departing process of fire work departing installation cannot been reflected in the design calculation, the structure modelling and optimization of the fire work departing installation is cannot been carried out by the traditional optimization method
由於火工分離裝置的分離解鎖過程是一個高度非線性的瞬態動力過程,涉及多個學科和專業領域,而且材料在高速高壓條件下瞬時性態十分復雜,長期以來所沿用的經驗設計方法和設計經驗公式的局限性很大,對火工分離裝置分離解鎖過程一些實際有影響的因素不能定量地反映到設計計算中來,採用傳統優化方法無法實現火工分離裝置的結構優化建模和計算。The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly, the research creates and solves the ship large amplitude motion equations. on the one hand, the actual calculation takes into account the coupling between the different motion modes, on the other hand, in the process of calculation of the ship hydrodynamic coefficient, it considers the influence of the nonlinear factor. the hydrodynamic coefficient used in the calculation of froude - krylov force, diffraction force and radiation force changes instantaneously following the draft, and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull
本文的研究分為二個部分:首先利用frank源匯法計算水動力系數,計算包括不同吃水時的附加質量和阻尼系數,吃水范圍涵蓋了船舶大幅度運動時所有可能的吃水;然後建立和求解船舶大幅度運動方程,在實際計算時一方面考慮了運動模態之間的耦合,另一方面在計算水動力時,考慮了非線性因素的影響。 froude - krylov力、輻射力、繞射力中的水動力系數隨吃水瞬時變化,靜浮力的計算精確到船體瞬時濕表面積,最後用四階龍格?庫塔方法在時域內求解船舶運動方程,並進行了載荷計算。Equations of mesh, shorting contact line, undercutting limit line, meshing limit lines and the existence conditions, angle between the direction of relative speed and the direction of contact line, induced normal curvature about every point on the contact line are established. moreover, the paper also theoretically analyzed the error of the grinded gear surface. on the basis of the theory, the computer program is worked out to automatically produce the contact line and the boundary curves of mesh. analysis of meshing circs under different parameters can be done so that we can gain the best process condition
首先對漸開面二次包絡理論進行了深入的探討,推導出了兩次嚙合的嚙合方程式、瞬時接觸線方程式、根切界限線方程式、嚙合界限線的方程式及其存在條件,相對運動速度方向與接觸線方向的夾角及接觸線上各點的誘導法曲率;此外,還對磨齒后工件的齒面誤差進行了理論分析;並在理論基礎上編制了相應的計算機程序,自動生成接觸線族及嚙合界限線,對不同參數條件下的嚙合情況進行分析,可以使工藝條件達到最佳狀態;最後研究了磨齒裝置,設計了磨齒機的傳動系統。On the aspect of the dynamic character, the electrocircuit model of the motor is being realized on the pspice environment. the transient character of the pmlsm under the sinusoidal power is reached using the pspice model at circuit level, the results are compared with those using time - stepping fem
從電機的動態性能方面:建立了電機的pspice模型,在pspice環境下對電機進行正弦波驅動下瞬態特性的模擬,並與以電磁場分析為基礎的時步有限元電機的動態模擬分析進行了比較。By virtue of their high self - resonance, good transient response and very small measuring distance, the tension compression force transducers are equally suitable for both static and dynamic applications
依靠它們很高的自振性良好的瞬時響應和很小的測量距離,無論靜態或是動態場合,拉壓力傳感器都同樣適用。Some problems due to the essential characteristic of speech, which include levity 、 dynamic 、 instantaneous 、 continuum and so on, cause difficulties in recognition practice
語音信號本身的特點(包括多變性、動態性、瞬時性和連續性等)造成了語音識別技術實現上的困難。Finally, the intelligent monitoring method is introduced including the instantaneous stress field identification of bracket and the selection of key points, the evaluation and alarm according to key points work state, etc
其中包括,基於模糊模式識別理論的牛腿瞬時荷載的自動識別、牛腿關鍵點的選擇、及關鍵點工作狀態的評估與報警等等問題。( 4 ) the intelligent inspect system for roof latticed truss structure in shenzhen citizen center is selected as a practice background, and the intelligent inspect method to the steel bracket of roof truss is researched in present paper, in which includes several tasks as follows : automatic load identification for bracket based on neural network method, prompt calculation for the stress of key points on bracket, and its service status evaluation and stress alarm
( 4 )以深圳市市民中心屋頂網架結構的智能監測系統為實際應用背景,詳細介紹了網架結構支撐鋼牛腿的智能化監測方法。其中包括,基於神經網路的牛腿瞬時荷載的自動識別、牛腿關鍵點應力的快速正向計算、以及關鍵點工作狀態的評估與報警。In this paper, the author has inferred the instantaneous efficiency equation during rise and return and the general efficiency equation during rise, return and the whole motion cycle respectively by analyzing two kinds of force states of in - line roller follower cam mechanisms in detail
本文作者通過詳細地分析直動滾子從動件凸輪機構的兩種受力狀態,推導出了直動滾子從動件凸輪機構在推程階段以及回程階段的瞬時效率公式以及在推程階段、回程階段以及整個運動循環內的總效率公式。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。At the same time, the pressure of dynamic state in different opening and closing velocities can be gained, on the basis of results the axial hydraulic force and the fluid force can be calculated, which offers reference and guide foundations for accurately calculating the drive force on water hydraulic valves
同時cfd解析也可以得到不同啟閉速度下閥腔內的動態壓力,在此基礎上計算出作用於水壓閥閥芯的穩態和瞬態軸向液動力,對精確計算閥芯驅動力具有重要的參考價值和指導意義。The author analyzed systematically the present status of the four research areas of self - organized criticality, transient chaos, the edge of chaos and weak chaos in the science of complexity and concluded that, the four research areas are actually different approaches for probing into the essence of the same problem ? the spatio - temporal evolution of open, far - from - equilibrium, interacting, large, dissipative dynamical systems in nature
筆者對復雜性科學中的自組織臨界性、瞬態混沌、混沌邊緣和弱混沌四大理論和研究領域就其發展現狀和最近動態作系統和深入的剖析后得出結論,認為以上四者是對自然界中開放、遠離平衡、相互作用的巨大耗散動力學系統的時空演化這個統一事物的本質的面面觀。This paper establishes the linear model of hydro - turbine and deducts its transfer coefficients. then the optimized operation parameters are gained in the frequency disturbance and load rejection simulation. through comparing dynamically, this paper analyses the impact on its dynamic performance if some governing system parameter changes
在研究小波動情形時,即系統在穩定工作工況點附近小瞬變時,可以把非線性系統進行線性化處理;本文建立了水輪機調節系統的線性化模型,推導了其中的傳遞系數;對水輪機調節系統的頻率擾動和機組突甩負荷工況進行了模擬試驗,整定了最佳調節參數;通過動態比較,分析了調節系統參數改變對其動態性能的影響。The status quo of high - resolution data acquisition system is discussed and by studying the character of high - resolution seismic exploration and seismic signal, the theoretical models and character of each unit are gained. this paper point out that under 1000 meter ' s depth where petroleum is embedded the idr of central controlled seismic instrument and telemetricseismic instrument are lower than 70db which ca n ' t meet the needs of high - resolution seismic exploration
文章論述了當代高解析度地震數據採集系統的現狀,對高解析度地震勘探及地震信號特點進行了研究,得出了高解析度地震勘探數據採集系統的理論模型和各功能單元的理論特性,指出在石油與天然氣埋藏的千米以下的地層,集中式數字地震儀和24位遙測地震儀的瞬時動態范圍均不超過70db ,遠遠滿足不了高解析度地震勘探的需要。Solving the rate equation numerically, the influence of the factor a and the reflectivity r on the transient characteristics of the ecld has been analyzed when the shape of the hysteresis loop looks like a parallelogram approximately
通過對速率方程組進行數值求解,分析了當ecld雙穩環呈現近似的平行四邊形時,譜線展寬因子和ld鍍膜端面反射率r對雙穩跳變瞬間動態特性的影響。分享友人