高階干擾 的英文怎麼說
中文拼音 [gāojiēgānrǎo]
高階干擾
英文
high-mode interference- 高 : Ⅰ形容詞1 (從下向上距離大; 離地面遠) tall; high 2 (在一般標準或平均程度之上; 等級在上的) above...
- 階 : 名詞1. (臺階) steps; stairs 2. (等級) rank 3. [醫學] (耳蝸的三個螺旋管的任一個) scala 4. [數學] order 5. [地質學] stage
- 干 : 干Ⅰ名詞1 (事物的主體或 重要部分) trunk; main part 2 (幹部的簡稱) short for cadre Ⅱ動詞1 (做...
- 擾 : Ⅰ動詞1 (擾亂; 攪擾) harass; trouble 2 (客套話 因受人款待而表示客氣) trespass on sb s hospital...
- 高階 : high [higher] order高階導數 higher derivative; higher order derivative; derivative of higher orde...
-
The fractional fourier transform is linear time - frequency transform, and it doesn ’ t have disadvantages of wigner - ville distribution. moreover, the precision of this method is higher, and the performance of antinoise is better
而分數階傅立葉變換是線性時頻變換,所以它不受交叉項的干擾,沒有不模糊區間減半的缺點,而且它的估計精度高、抗噪性能好。With the development of science and tecbnology, the electronic warfare has gotten to a new stage, electronic jammers, anti - radialized missiles, superlow altitude attacks have turned into great threats confronted with radar nowadays. former single - based radar not only had difficulty in finishing expected tasks, but also the survival of itself had been a pressing problem, people have to probe into multifarious countermeasures in order to improve the viability and effective work - capacity
隨著科技的發展,雷達電子戰發展到一個新的階段,電子干擾、反輻射導彈、低空突防和隱身武器已成為當今雷達面臨的四大威脅。傳統的有源雷達不僅很難完成預定的任務,而且自身的生存也成了緊迫問題,人們不得不積極探討各種對策,以提高雷達的生存和有效工作能力。In addition, it was also suggested by the research result that the product classification would not interfere the influence of the management of the supply chain, the flexibility of a firm ' s management style, the value - added offerings of a firm, etc. on the performance of the introduction of e - commerce, but would interfere the influence of the eagerness of a firm ' s top management, the constructivity of a firm, etc. on the performance of the introduction of e - commerce
此外,本研究亦發現,供應鏈管理、營運彈性與附加價值的提供等等因素對企業導入電子商務后績效的影響,不會受到產品類別的干擾;不過,高階管理團隊態度與組織文化建設性等等因素對企業導入電子商務后績效的影響,則會受到產品類別的干擾。Cerebrum is disturbed to overcome, can force cross - eye not to see a thing only, cross - eye accepts the stimulation that is less than content elephant, inspect functional development to stop, eyesight stops to be in phase of a primary growth, " use into useless retreat ", as time passes, cross - eye eyesight drops further, correctional eyesight also cannot rise, form amblyopia ( after detailed sees, narrate )
大腦為了克服干擾,只能強迫斜視眼不看東西,斜視眼接受不到物象的刺激,視功能發育停止,視力停止在一個初級發育階段, 「用進廢退」 ,久而久之,斜視眼視力進一步下降,矯正視力也無法提高,形成弱視(詳見後述) 。According to the actual situation and performance requirements, how to impair the influence of the disturb torque and the uncertainty of the system object model and how to improve stabilization and tracking accuracy are the principal difficulties in this paper. to solve these problems, a method by using mutative - plus and high - order compensation is brought forward and design by adopting h mixed sensitivity method in the velocity loop, then the weighting function selection is discussed, and the concrete selection principles are given in details
根據本系統的實際工作情況和性能指標要求,通過分析指出,如何克服機(艦)載條件下干擾力矩的影響及系統對象模型的不確定性是本系統中提高穩定精度和跟蹤精度要重點解決的問題,針對這一問題,提出了在速率穩定環採用變增益的串聯高階校正設計控制器和利用h _混合靈敏度方法進行控制器設計的方法,詳細討論了加權函數選擇的問題。Many kinds of filters are presented in this paper, e. g. adaptive transversal filter , direct two - order iir filter, lattice iir filter, high - order iir filter and adaptive sampling filter. because these filters have some limitations and defects, the adaptive filter of other structure is discussed in the paper
論文研究了窄帶干擾抑制的幾種濾波技術,主要有自適應橫向濾波器、直接結構的二階iir型濾波器、格型結構的iir型濾波器、高階iir濾波器以及自適應采樣濾波器。Abstract : since piezoelectric resonant filter can not effectively prohibit higher - frequency harmonic, the mechanism of this problem has been discussed by means of a specific example which shows that there exists lots of undesirable resonant frequencies of piezoelectric that would let pass undesirable signals. to solve this problem , an ameliorated electrostatic mechanical resonant filter is proposed and a specific case is demonstrated. the example of electrostatic resonant micro - bridge asserts that by adjusting the gap of exciting capacitance the higher - frequency vibrating model of micro - bridge cannot be excited based on orthogonal character of intrinsic vibrating shape of micro - bridge, so that this kind of resonant filter can effectively filter out undesirable higher - frequency harmonic
文摘:提出壓電諧振濾波器不能很好地濾除高頻諧波的問題,結合一個具體例子理論推導了壓電諧振濾波器存在許多干擾諧振頻率,從而不能有效濾除一些特定頻率的干擾信號.為了解決這個問題,提出一種改進型的靜電激勵諧振濾波器.為了說明其可行性,具體分析了改進型雙端固支微梁靜電激勵諧振濾波器,理論推導證實基於雙端固支微梁的各階振型正交的原理,通過適當調整激振電容的間距,雙端固支微梁的高階振動模態受到很好的抑制,因此這種諧振濾波器可以有效阻止濾波器中心頻率的高頻諧波的通過Since piezoelectric resonant filter can not effectively prohibit higher - frequency harmonic, the mechanism of this problem has been discussed by means of a specific example which shows that there exists lots of undesirable resonant frequencies of piezoelectric that would let pass undesirable signals. to solve this problem , an ameliorated electrostatic mechanical resonant filter is proposed and a specific case is demonstrated. the example of electrostatic resonant micro - bridge asserts that by adjusting the gap of exciting capacitance the higher - frequency vibrating model of micro - bridge cannot be excited based on orthogonal character of intrinsic vibrating shape of micro - bridge, so that this kind of resonant filter can effectively filter out undesirable higher - frequency harmonic
提出壓電諧振濾波器不能很好地濾除高頻諧波的問題,結合一個具體例子理論推導了壓電諧振濾波器存在許多干擾諧振頻率,從而不能有效濾除一些特定頻率的干擾信號.為了解決這個問題,提出一種改進型的靜電激勵諧振濾波器.為了說明其可行性,具體分析了改進型雙端固支微梁靜電激勵諧振濾波器,理論推導證實基於雙端固支微梁的各階振型正交的原理,通過適當調整激振電容的間距,雙端固支微梁的高階振動模態受到很好的抑制,因此這種諧振濾波器可以有效阻止濾波器中心頻率的高頻諧波的通過One is the change of the operating environment and other unmeasurable disturbances. the other is that some simplifications such as model reduction and linear approximations are made during modeling due to the limitation of theory and technology. the difference is usually described as the uncertainties in control systems
在實際工業過程式控制制中,一方面因為外部工作環境變化和各種不可測干擾的影響,另一方面因為受理論和技術的限制,在建模過程中經常要做一些簡化處理,例如高階系統的降階處理、非線性方程的線性化等,這些原因使得實際系統與用以分析與綜合的數學模型之間存在著一定的差別,在研究中一般將這種「差別」敘述為系統的不確定性。Considering the high order nonelinearly and mutiple - input - mutiple - output coupling effect of the system, different driving condition and complex external disturbance, hybrid fuzzy - pid control with parameters selfturning is adopted in engine speed control system, the simulation which is integrated with vehicle model in the matlab environment shows that the performance and fuel economy of the car with pscvt is better than those of car with the standard manually shifted transmission
考慮到車輛系統的高階非線性和輸入輸出的耦合效應及汽車運行的復雜工況和外界環境干擾等因素的影響,提出了混合模糊? pid控制演算法用於變速系統速比的控制,並結合整車的數學模型在matlab下進行了計算機的動態模擬。Robust adaptive h control with almost disturbance decoupling for uncertain nonlinear systems
一類最小相高階串聯系統的幾乎干擾解耦問題The fourth - order explicit upwind - biased compact difference schemes are used in the spatial discretization of the nonlinear convection terms. these difference schemes can be used in all computational region including the boundary neighborhood, and can overcome the difficulty not adapting simultaneously in the boundary neighborhood for general three - dimensional fourth - order central difference schemes, and improve computational stability a nd resolution. the compact difference equations with high accuracy and resolution for solving the incompressible n - s equations and perturbation equations are composed of these compact difference schemes, and provides an effective numerical method for the investigations of the turbulent spots and coherent structures
文中發展了四階時間分裂法用於navier - stokes方程及其擾動方程的時間離散;對分裂得出的關于壓力的poisson方程和關于速度的helmholtz方程,建立三維耦合四階緊致迎風差分格式;這些格式適用於包括鄰近邊界點在內的計算區域,克服了三維各自用四階中心差分格式離散不適用於邊界鄰域的困難,並提高了穩定性和解析度,用這些格式分別組成了數值求解navier - stokes方程及其擾動方程的高精度、高解析度的緊致差分方程組,為湍斑及湍流相干結構的研究提供了有效的數值方法。Before now because operating frequency was low, suppose that electrode in saw device has no thickness and thus second order effects are ignored. these second order effects, including electromagnetic feedthrough, triple transit interference, body acoustic wave, reflection and so on, affect the performance of saw device in high frequency. so it is important that second order effects are researched and improved in depth
這樣的需求要求了saw設計者考慮在低頻時未加考慮的二階效應,大多數以前的分析假設電極無厚度而忽略了的二階效應(電磁直通、三次行程干擾、體聲波、聲電再生等)在高頻時對saw器件的性能影響較大,要求對其二階效應進行深入研究並對其進行改善。The emphasis of the research of the method of time difference measurement is how to suppress noise and interference effectively. the second part is to discuss the capacity for anti - interference of generalized cross correlation ( gcc ) algorithm. the algorithm based on high order cumulant is introduced to solve the problem, which is bad performance to suppress noise of gcc
基於廣義平穩信號的模型,論文第二部分討論了廣義互相關( gcc )時差測量演算法的抗加性噪聲干擾能力,針對其相關噪聲抑制能力差的問題,提出了基於高階累積量的時差測量演算法,對演算法的適用范圍、計算復雜度等方面進行了分析。Abstract : the most critical task in designing a model based on predictive controller is identifying a reasonably good process model. the identification model of mould level of a continuous casting line in a steel plant is very difficult. due to the extremely high stochastic disturbance level, well - known parametric identification methods using random step function, prbs or stochastic test inputs are not successful. the present method based on orthogonal test inputs gives satisfactory results
文摘:在設計一種基於預測控制器模型時,最關鍵的工作是識別一個合理可靠的過程模型.在鋼鐵廠的連續鑄造線上識別鑄模液位模型是很困難的,由於極高的隨機干擾水平,使得眾所周知的隨機階躍函數, prbs或隨機試驗輸入等參數識別方法都以失敗告終.而本文介紹的基於正交檢測的方法給出了令人滿意的結果分享友人