阻尼誤差 的英文怎麼說
中文拼音 [zǔníwùchā]
阻尼誤差
英文
damping error-
This method is especially accurate in damping identification with the relative error less than 1 % to theoretic values
尤其在阻尼比的識別上，相對誤差在1 %以下。On schuler-tuned compasses this error is avoided by cutting out damping during changes in speed and course.
在休拉調諧羅盤中，這項誤差由於在速度、航向改變時切斷阻尼而避免。In the forth chapter, the performances of mr dampers designed and fabricated at chongqing university have been tested in national center for test and supervision of coach quality, including schematics of damping force vs. displacement of piston head, damping force vs. velocity of piston head, etc. for some given electric currents of the coil. the experimental results demonstrate that damping force offered by mr damper consists of background damping generated by resistance of mr fluid and damping caused by magnetic field
對不同勵磁電流條件下的理論阻尼力與測試阻尼力進行了比較，分析了產生誤差的主要原因；對阻尼器產生溫度效應產生的主要原因進行了分析，提出了應該提高磁流變體的溫度穩定性；推導了磁流變體的感性和容性流動方程，從理論上分析了磁流變體的感性和容性對阻尼器特性的影響。The drive current control method of magnetorheological damper was designed by force error of suspension damper control force and output force of magnetorheological damper
根據懸架阻尼控制力與磁流變阻尼器輸出阻尼力的力誤差，設計了磁流變阻尼器驅動電流控制方法。The first - order perturbation method correct for forcing decoupling method based on perturbation theory is put forward to decrease error ; iii. the complex modal method is introduced into analysis of non - classical damping systems to eliminate error of forcing decoupling method, and improve the complex modal response spectrum, which can apply to design of non - classical damping systems ; iv. for exerting the energy dissipation capability of each device, a two - step optimum method, whose controlling function is extremum expectation of interbedded displacement, is put forward to optimize the number and position of device ; v. the problem of iterative method applied to analyze energy dissipation systems is indicate, and give some primary advice based on pilot study
為改善上述缺點，本文進行了以下的研究工作：在忽略耗能器附加質量的基礎上，推導出適用於耗能減震結構的攝動法，減少振型分解法在迭代計算過程中的工作量，加快計算速度；針對運動方程的強行解耦所產生的誤差，根據攝動法原理，對其進行一階攝動修正；為消除強行解耦振型分解法用於非比例阻尼結構分析時產生的誤差，引入狀態空間對系統進行復模態分析，並改進了基於復模態理論的、適用於非比例阻尼結構設計的雙反應譜方法；對于耗能器的數量和位置優化進行了一些探討和研究。The meaning of cqc ( t ) algorithm is the difference in time domain between the peak value location in time axis of input earthquake and model response of structure, which is called delay time. through the delay time calculating of a series of oscillators with different damp ratio and natural vibration frequency, it is found that it will bring biggish error if the cqc algorithm applied on the structure which has long period, and the time dependent cqc ( t ) algorithm could solve the problem easily
Cqc （ t ）方法的意義在於輸入地震動峰值與結構模態響應峰值在時間軸上的時間差，我們稱之為延遲時間，通過計算具有不同周期和阻尼比結構的延遲時間，發現對于自振周期比較長的結構， cqc方法會帶來比較大的誤差，而基於時程的cqc （ t ）方法能夠解決這個問題。The simulation results show that the level damp of dins can reduce the influence of the external velocity error, and restrain the error of longitude effectively
通過模擬分析，比較兩套阻尼系統的模擬結果，可以看出雙慣導水平阻尼能夠顯著降低外速度誤差的影響，抑制經度誤差。In light of the character of the dins, a damped network was based on the traditional design of damping equalizers for the vertical errors, and the relation between a various of errors and the new level damped system was analyzed, and the navigation information of dins was combined
在借鑒傳統水平阻尼網路的基礎上，針對雙慣導系統的特性設計了新的阻尼網路，並分析了其誤差源與雙慣導阻尼網路的關系，對雙慣導系統的導航參數進行線性組合輸出。Traditional inertial mechanized - platform uses velocities to damp the system attitude to improve the precision of attitude, when the system acceleration is small. referring to the idea, this paper designeda damp kalman filter in strap - down attitude heading reference system ( ahrs ). the new method makes use of 3 - d accelerometer ' s measurements to estimate the system attitude, which is measured to compensate attitude errors. because the acceleration affected the precision of fiher directly, the fuzzy adaptive system was presented. the fuzzy logic inputs are three accelerations and the output is to control the measurement noise covariance matrix. simulations and experimental results prove that the damp algorithm can damp most of schuler oscillation and foucauh oscillation, so that to assure the filter convergence and efficiently improve the precision of strap - down ahrs
在系統機動性不強的情況下，傳統的平臺內阻尼演算法將系統本身的速度信息通過阻尼網路加到系統中，達到提高姿態角精度的目的.將這種平臺內阻尼的思想引入到捷聯慣性航姿系統中，在系統加速度較小的情況下，利用加速度計的輸出估計系統姿態角，通過卡爾曼濾波的形式補償系統姿態誤差.由於加速度的大小直接影響濾波器精度，本文設計了模糊自適應卡爾曼濾波演算法，根據三軸加速度計的輸出調整內阻尼量測誤差方差陣，從而避免了濾波器的發散.模擬和實驗驗證，內阻尼演算法可明顯抑制舒勒周期振蕩和傅科周期振蕩，避免了系統姿態漂移，有效提高了捷聯慣性航姿系統的精度The proposed control system includes the attitude controller acting on the rigid hub, designed by using pulse - width pulse - frequency ( pwpf ) modulation integrated with command shaping technique based on csvs method, and the piezoelectric material elements as sensors / actuators bonded on the surface of the beam appendages, designed by the optimal positive position feedback ( oppf ) control technique, in which the selection of ppf gains is determined via introducing a cost function to be minimized by feedback gains which are subject to the stability criterion at the
設計的控制器僅利用輸出信息，從而避免設計撓性模態狀態觀測器以及引入狀態觀測器誤差;在此基礎上，採用分力合成方法設計命令成形控制器來抑制撓性附件的振動，設計的優化命令成形控制信號在理論上可以對系統的各階撓性模態完全抑制。但考慮到模型不確定性和外部擾動，在內迴路又設計了最優正位置反饋（ oppf ）補償器以增加撓性結構的阻尼，使撓性結構的振動能夠很快衰減。Artificial ground motions, for their optional and statistic properties, are regarded as an important form of input for structural time history analysis in contrast to the actual records. present simulation methods which are mostly derived from spectra - compatible technique do well suit for single - damping - ratio - spectra simulation, but the simulation precision is not satisfactory when the spectrum is n ' t the object spectrum
目前常用的反應譜擬合技術能對給定單一阻尼比反應譜進行較好的擬合，但在目標譜以外其它阻尼比反應譜的擬合上有較大誤差，這就是反應譜擬合技術中存在的多阻尼比反應譜擬合問題。The identification precision of the method is not influenced by the modeling errors of the mass and stiffness matrix of machine structure, whereby the effects of the modeling errors of these two matrixes upon the identification accuracy of damping parameters are avoided
該方法不涉及機械結構的質量矩陣和剛度矩陣，從而避免了這兩種矩陣建模誤差對阻尼參數識別精度的影響。分享友人