modal parameter 中文意思是什麼

modal parameter 解釋
模態參數
  • modal : adj 1 方式上的，形態上的；【哲學】（對本質、內容說的）形式（上）的。2 【語法】語氣 （mood） 的;表...
  • parameter : n. 1. 【數學】參數，變數；參詞；參項。2. 【物理學】參量；（結晶體的）標軸。3. 〈廢語〉【天文學】通徑。vt. -ize 使參數化。
  1. 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。
  2. Abstract : aiming at the variety of modals of nonlinear systems, we proposed a general parameter estimation method based on genetic algorithms ( ga ), which can be used in most kinds of nonlinear system modal. this method was applied to simulating parameter estimation of several different examples of nonlinear systems. the results proved that the method is effective and useable

    文摘:針對非線性系統模型的多樣性，提出適用於多種非線性模型的基於遺傳演算法的參數估計方法，並以多種非線性模型為例作了模擬研究.結果表明，遺傳演算法是非線性系統模型參數估計的有效工具
  3. After reading a large amount of domestic and international about shaft research materials, the thesis combines the concrete experimental condition of the laboratory, and the crankshaft crack modal parameter characteristic go on the theoretical research at different depth different position to smoothshaft, experimental study, test data processing, diagnose system developing work ect

    本論文在閱讀了大量國內外關于軸裂紋檢測的研究資料后，結合實驗室的具體試驗條件，對光軸和曲軸裂紋在不同深度不同位置時模態參數特性進行理論研究、試驗研究、試驗數據處理、診斷系統開發等工作。
  4. A method of modal parameter identification for large bridges

    大型橋梁模態參數識別的一種方法
  5. Application of hht for modal parameter identification to civil structures

    方法在結構模態參數識別中的應用
  6. Firstly establish it mathematical modal, research the affect of the system character by the system parameter and bring forward the method improving system character when the load is outside power

    在建立精校機電液位置伺服系統數學模型的基礎上，當負載為外負載力時，研究了系統參數對系統性能的影響，提出一些改善系統性能的方法。
  7. Frequency - domain gtls identification combined with time - frequency filtering for flight flutter modal parameter identification

    基於時頻域濾波及頻域廣義整體最小二乘辨識的飛機顫振模態參數辨識
  8. At this time, the approximate mechanical model of devices has been put forward, which frequency is 70 mhz, then we analyzed the euler ? bernoulli equation, find that the frequency is determined by the resonator ’ s density thickness and length ; the free - free - beam 、 coupled beam 、 support beam 、 transducer have been designed ; the model was simulated and modal analyzed on the coventorware and were consistent with the designed parameter. the silicon surface microfabrication process was developed and emphatically introduced several key surface microfabrication technologies, and was simulated by coventorware

    本文通過分析歐拉-貝努立方程，得出濾波器的共振頻率主要由諧振梁的密度、厚度和長度決定，考慮切變形和轉動慣量的情況下，完成微機械諧振梁、支撐梁、驅動電容的設計;在coventorware軟體上進行模擬，分析結果與理論設計比較好地吻合;對微機械濾波器的加工工藝進行設計，給出器件的完整的工藝流程，重點介紹微機械表面加工工藝，並在coventorware上進行模擬。
  9. State of modal parameter identification

    振動模態的參數識別綜述
  10. Based on apdl, the design language of finite element analysis software ansys, and visual c + +, the software on acoustics design of underwater cylindrical shell structure is developed. when input parameter of the cylindrical shell in the interface redeveloped in this paper, the software execute the batch file of apdl in the vc process to establish the finite element modal and carry out the analysis, the analysis result and the vibration mode can also be displayed. furthermore, the software has been developed to process the acoustics optimization design of the finite cylindrical shell with stiffener in appointed frequency range

    本論文從便於工程實際應用出發，對使用有限元分析軟體進行二次開發以方便結構振動分析及改進結構設計的方法和過程進行了研究，在此基礎上對水下航行器圓柱殼體的結構聲學特性進行了分析，在指定頻率區間，對結構以振動輻射聲功率級為目標函數進行了部分參數的結構優化設計，與此同時，為了方便有限元分析軟體的使用和簡化設計過程中大量重復的工作，利用ansys提供的參數化設計語言apdl （ ansysparametricdesignlanguage ）結合vc對有限元軟體ansys進行了二次開發，形成了一體化的水下圓柱殼體結構聲學設計軟體。
  11. In mfi, the thesis uses the bottom reflection phase shift as the cost function and the modal wave number as input data. also, it makes errors analysis by the statistical distribution between data errors and parameter errors. there are some new ideas in it

    論文在使用匹配場反演方法反演海底參數中以海底反射相移曲線作為代價函數，模式波數作為輸入數據，同時利用統計分佈進行誤差分析，具有一定的新意。
  12. The primary objective of the present dissertation focuses on the techniques of system identification and vibration control for offshore platforms subjected to wave loading. three efforts are as follows : research on system identification on offshore platforms includes two topics. one is modal parameter identification and the other is the structural parameter identification

    但對海洋結構物而言，這方面的研究卻相對較少，本文是針對海洋平臺結構進行系統辨識和振動控制技術兩方面的研究，主要包含以下幾方面的內容海洋平臺結構系統辨識研究主要包括模態參數識別和結構參數識別。
  13. The existing problems of eve are also analyzed, the new developments, such as flexible clamp, simulation of the dynamic boundary conditions of a specimen, modal parameter identification by vibration shaker, modal transformation of structure are introduced briefly

    分析環境振動實驗當前存在的問題，對柔性夾具、試件動力學邊界條件的工程實現、振動臺模態參數識別、結構的模態轉換等新進展做簡要介紹。
  14. Modal parameter identification of time varying vibration systems using the time varying multivariate prony method

    法的時變振動系統模態參數辨識
  15. The use of the batten interpolation for modal parameter in the curvature modal and flexibility difference curvature method can solve the contradiction between decreasing measure points and the guarantee of identification precision ; the identification program has also been developed in matlab : as long as the former 3 step vibration shape and frequency are input, the value and the graphic representation of damage identification will be obtained by flexibility difference curvature method

    本文應用曲率模態法、柔度差值曲率法當中，對模態參數用樣條插值，較好地解決了減少測點與保證識別精度的矛盾；在matlab軟體中開發了識別程序：只需輸入前三階振型和頻率，即可由柔度差值曲率法給出損傷識別的圖示與數值結果。
  16. The modal parameter identification using natural excitation technique and eigensystem realization algorithm are studied. reasonable results are identified. by introducing statistics to dispose the modal frequency of the structure, the preciseness and precision of the identified system mode are improved

    研究了利用環境荷載激勵技術和特徵系統實現演算法進行模態參數識別，引入統計方法對模態頻率進行統計平均處理，提高了系統模態識別的準確性和識別精度。
  17. Modal parameter identification through adaptive chirplet - based signal approximation

    基於自適應線調頻高斯基展開的參數識別方法
  18. Operating modal parameter identification by random decrement technique and ibrahim time domain

    法識別工作模態參數
  19. Aiming at the underwater vehicle in fluid because of problem that fluid and solid coupling produced added mass, in using advanced hydrodynamics to proceed to the added mass the foundation that described, and using modal parameter design theories, the paper put forward according to modal parameter test data identified the method that added mass of the underwater vehicle

    摘要針對水下航行器在流體中由於流固耦合所產生的附加質量問題，在用高等流體力學對附加質量進行描述的基礎上，利用模態參數識別理論，提出了根據實測模態參數來識別水下航行器附加質量的方法。
  20. Nondestructive testing technology includes medium detecting technology and dynamic testing technology which make use of vibration respond of constructure and system dynamic behavior to detect damage in structure. dynamic testing technology is significant not only for the assessing of structures, but also for its economy and convenience, which contains modal parameter identification, extracting and analizing damage indices, determining location of damage, quality assessment and life estimation

    無損檢測包括媒介探測技術和振動檢測技術，其中，振動檢測技術利用結構的振動響應和系統動特性參數探測結構損傷，具有經濟、簡便、迅速、可以進行大范圍構件的質量檢測和評定建築結構整體性能等特點，是目前國內外研究的熱點和難點。
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