振型平衡 的英文怎麼說
中文拼音 [zhènxíngpínghéng]
振型平衡
英文
modal balancing-
It has the good qualities of both tem horn antenna and dipole antenna, less dimensions construction, good direction and higher efficiency. its impedance and radiation are analyzed. good agreements are obtained from experiment and calculation
這種平面喇叭天線採用了新型的平衡饋電方式，結構簡單，性能良好，同時結合了tem喇叭和振子天線的優點，結構維數低，具有較強的方向性、較高的效率，在uwbsar軌道系統實驗中取得了比較理想的結果。For a class of series - wound active power line conditioner the design approach law of a new fuzzy integral sliding mode variable structure control is presented. this method adjusts power electronic switch in order to achieve anticipated balance volt, finally makes active power line conditioner not only possess good robustness of variable - structure control and decrease vibration to the most but also increase the steady state precision. series - wound aplc adopted this control method possesses good dynamic and steady state performance
針對串聯型有源電網調節器運用變結構控制策略，調節電力電子開關模式，以獲得預期的平衡電壓，對串聯型有源電網調節器提出了模糊積分變結構控制方法，使串聯型有源電網調節器既保持了常規滑模控制強魯棒性的優點，又減弱了滑模控制的抖振，提高了系統的穩態精度，使系統具有良好的動態和靜態性能，模擬試驗表明該控制策略是一種十分有效的控制方法。Modal bode plot theory for diagnosing the rotor imbalance axial position and rotor imbalance type is presented based on advanced rotor dynamics theory and field balancing rotating machinery theory and comprehensive experience of field balancing steam - turbine generator set
摘要基於轉子動力學理論、汽輪發電機組軸系現場動平衡理論和工程實踐經驗，提出可直接判斷軸系不平衡軸向位置及不平衡型式的振型波特曲線方法。The dynamic model of misaligned rotor - bearing system equipped with a flexible laminated membrane coupling was developed by using the method of lumped parameter in this dissertation, and the dynamic behavior, such as the nature characteristics, stability, steady state response of the system, etc. was analyzed based on the theory of linear vibration
本文根據集總參數法建立了膜片聯軸器耦合的不對中轉子?軸承系統的動力學模型。基於線性振動理論分析了系統的固有特性、穩定性和不平衡響應。The submarine noise detected by sonar consists of two parts : propeller - generated hydro - dynamical noise, which can be greatly reduced by improving the submarine rear shape ; radiated noise from the submarine structure excited by the centrifugal forces ( moments ) of rotatory machine, which is more complicated and influenced by many factors
聲納所探測的潛艇噪聲包括兩部分，一是螺旋槳運轉帶來的水動力噪聲，二是潛艇主機工作時產生的不平衡力和力矩引起潛艇結構振動，帶動流場振動從而輻射噪聲。通過改進潛艇尾部線型設計，已將水動力噪聲降到比較低的程度，而結構噪聲則復雜得多，與許多因素有關。In order to solve need badly three - ring type gear reducer ( problems of high vibration, high temperature and short spin arm bearing life in operation, by means of power separation flow, elastic ring equilibrating load, tardy down and assimilation vibration of synchronous belt transmission, and mechanism balance principle, the author designs a new type three - ring type gear reducer with arc tooth synchronous belt transmission, the gear reducer is fully balancing, equilibrating load and reducing vibration and phase difference 180 ( of mass eccentricity
為解決一般三環減速器振動大、溫升高和轉臂軸承使用壽命短等生產中迫切需要解決的問題，依據功率分流、彈性環均載、同步帶緩沖及吸振和機構平衡原理，設計出了一種具有圓弧齒同步帶傳動的完全平衡、均載減振，偏心相位差為180的新型三環減速器。Equivalent n - th modal unbalance
階振型等效不平衡諧量For example, because of the limit of their cmos chip performances and the capability of their memorizers, this kind of balancing instruments based on singlechip machine are not fit for large digital operations in signal processing, and have difficult in test faint signal of vibration, and their expansibility are not good
例如單片機類型的動平衡儀器，因其主晶元性能和存儲器容量的限制，對于信號處理的大量數字運算能力不強，小振動信號的測試性能不佳，系統功能的可擴展性有限。The flowfields around the reentry blunt body are simulated numerically by solving the navier - stokes with the various thermal and chemical model, such as perfect gas model, vibrational excitation model, equilibrium gas model, and the non - equilibrium gas model of one temperature, two temperature and three temperature
本文採用完全氣體模型、振動激發氣體模型、平衡氣體模型、一溫度非平衡氣體模型、兩溫度非平衡氣體模型和三溫度非平衡氣體模型進行了鈍體高超聲速繞流流場的數值計算。Natural characteristic analysis not only verifies whether the natural frequencies and mode shapes of the antenna are reasonable or not, but also is the base of the structural response analysis, fatigue resistivity computing and the other dynamics problems. the structure design of antenna is a complicated systems engineering, which is generally limited to multiple objects that influence each other, so we need to keep the balance among those objects by decision - making technology of multiple objects to ensure every target optimized
固有特性的分析不僅能檢驗天線結構的固有頻率和振型是否合理，而且也是結構響應分析、動強度計算等其他動力學問題研究的基礎；天線的結構設計是一個復雜的系統工程，它通常受到多個目標的限制，而各目標往往是相互影響的，甚至是相互矛盾的，因此需要藉助多目標決策技術，平衡各目標，以保證空間天線最優的滿足各項設計指標。In order to solve it radically, making power assembly of bj1036e2f1 light truck the research object and through dynamic simulation analysis of power assembly, this thesis obtains the distribution rules of forces of the bolts linking three shells mentioned above and the relation between forces of the bolts and rotate speed of engine. after finite element mode analysis of these three shells, inherent frequency and vibration model of shell of power assembly are gained, and thus its dynamic character is realized. based on computer simulation analysis, experimental model of power assembly is acquired by vibration test and strength test of shell of power assembly, and the relation of forces of the shell and rotate speed of engine and imbalanced mass of rotate components is studied
為了從根本上解決該問題，本論文以bj1036e2f1輕卡動力總成為研究對象，通過動力總成的動力學模擬分析，找出了三殼之間聯接螺栓受力的分佈規律和螺栓受力與發動機轉速的關系；通過三殼的有限元模態分析，得到了動力總成殼體的固有頻率與振型，從而了解了動力總成殼體的動態特性；在計算機模擬分析的基礎上，通過動力總成殼體的振動測試和強度測試，得出了動力總成的試驗模態，並研究了殼體受力與發動機轉速和旋轉部件不平衡質量的關系。Through theoretic reckoning and simulating analyzing, several control strategies for shunt apf were compared and chose ip - iq arithmetic of the instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. two topologies of main circuit were compared and chose the three - phase voltage - source converter with a split - capacitor as its main circuit structure
通過理論計算和模擬分析，比較了並聯型apf的幾種控制策略的優點和缺點，從中選擇瞬時無功理論控制策略i _ p - i _ q計算方式為指令電流產生的演算法，並在此基礎上增加了抑制系統諧振和平衡直流側電容電壓的控制；比較了並聯型apf主電路的兩種常見形式，從中選擇了三相電壓型變流器的主電路形式；算出適合該apf的直流側電容和出線電感的參數；設計出能有效消除apf產生的高次諧波的高通濾波器。This paper investigates the vibration features of various typical gearbox faults including profile error, broken tooth, symmetrical tooth wear, serious unbalance of shaft, on the base of theoretic analyses and plenty of cases. it provides guide for further gearbox - fault - automatic - diagnosis
在理論分析和大量的工程實例基礎上，提取了包括齒型誤差、斷齒、齒輪均勻磨損、軸嚴重不平衡、箱體共振五種齒輪箱典型故障的振動特徵，為實現齒輪箱故障自動診斷提供了理論依據。A mathematical model is developed to comprehensively describe and analysis the vibration of over - head transmission lines according to pertinent datum. based on the model ， an optimum solution about the conductor - damper system is put forward to by means of the analysis of possible anti - vibration designs. a method of balance - energy is used to acquire the frequency - respondence features of the conductor - damper system under the function of breeze ; a cad software is presented and developed in terms of above approaches. the model applied in the thesis is comprehensible and considerate, and the results from the model are close to the data from experimental site. beside these, favourable interactive operational capability makes it possess more practical and economic value
通過分析有關資料，建立了普通檔距導線微風振動系統的防振數學模型，並在該數學模型的基礎上，對防振結果進行了優化分析，得到了防振系統的解，用能量平衡原理，得到系統在微風作用下的頻響特性；採用這種方法設計了普通檔距防振的計算機輔助分析軟體。所採用的分析方法對微風振動的影響因素考慮全面，所求結果與現場實驗觀測中的數據比較接近，且人機交互操作性能良好，有一定的工程實用價值The compute model of shafts of the machines is built by adopting concentrated mass method. taking into account the different support conditions of the shafts that workshop is considered as rigidity or elasticity ; the natural characteristic and unbalanced response of the shafts are computed by integrating with high stable riccati transfer matrix method
採用集總質量法對機組軸系建立了計算模型，並結合穩定性良好的riccati傳遞矩陣法，分別考慮機組軸系的支撐基礎（廠房）為剛性、彈性兩種情況，計算了機組軸系的自振特性、軸系的不平衡響應。A novel resonant pole zvt three - phase pwm inverter circuit for three - phase ac motor driving is presented. the proposed circuit has the feature of being more flexible with three inverter arms in zvt process. using only one resonant inductance, the inverter can not only reduce the power loss of inductance but also avoid possibility of unbalance in motor ' s three stator windings
提出了一種針對三相交流電機驅動的新型諧振極零電壓過渡三相pwm逆變器電路，該電路中三個逆變橋臂的零電壓過渡更具有靈活性，僅使用一個諧振電感，既減少了電感損耗又防止了電機三相定子繞組可能存在的不平衡問題，並且諧振電感中殘余能量能夠回饋給電源；新型逆變器的輔助開關均工作在零電流開關條件下，並且控制邏輯簡單。Method of modal balancing
振型平衡法The engineering result confirms that the proposed method is better than the other wavelet methods for matching fault feature of mechanical signal, and the weak impact - rub fault caused by the axis misalignment and rotor imbalance of a key rotating machine in an oil refinery are desirably extracted
工程振動信號分析表明，同其他類型的小波相比，用提升方法構造的小波能更好地匹配機械信號故障特徵波形，因此較理想地提取出了某煉油廠重催機組轉子不平衡、軸系不對中和輕微碰摩的故障特徵。The monitoring sites and the signal types of various common faults are illustrated for early diagnosis, including misalignment or off balance of the rotor, shaft bending, loosing of a part, fluid induced vibration and damages of rolling - bearing or gear, etc
闡述了振動測試點和測量信號類型的選擇方法，給出諸如轉子不平衡、軸彎曲變形、轉子不對中、部件松動、流體誘發振動及滾動軸承、齒輪損傷等常見故障的診斷方法。A detailed model of non - linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non - linearity are considered, is proposed in this paper. based on several numeric examples investigated by the galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived
本文創新地提出了斜拉橋拉索-橋面耦合參數振動模型，推導了索-橋耦合非線性參數振動方程組，聯合galerkin法及數值積分方法，對各種特性的拉索進行了數值求解，得出了影響拉索參數振動的各種因素；提出了斜拉索受軸向端激勵參數振動模型，導出了模型的非線性振動方程，使用諧波平衡法得出了產生參數振動需要的最小激勵幅值、共振時瞬態及穩態的振動幅值及索拉力的變化特性，並用數值積分方法對實際斜拉橋拉索進行了計算，分析了拉索阻尼對參數振動的影響。分享友人