降速變換 的英文怎麼說

中文拼音 [jiàngbiànhuàn]
降速變換 英文
down shift
  • : 降動詞1. (投降) surrender; capitulate 2. (降伏) subdue; vanquish; tame
  • : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
  • : 動詞1. (給人東西同時從他那裡取得別的東西) exchange; barter; trade 2. (變換; 更換) change 3. (兌換) exchange; cash
  1. According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also

    根據系統技術要求,採用單片機實現了混合式直流直線步進電動機的開環數字控制;利用v f和復合鍵控方法實現了系統轉等參數的數字設定;利用細分控制技術保證了電機運行的平穩性,並進行了波形分析和理論研究;採用單片機軟體控制策略解決直線步進電機行程末端的機械沖擊問題;同時對主功率電路、驅動電路和系統保護電路進行了分析,完成了硬體設計、製作和軟體編程、調試,最後在混合式旋轉步進電動機上進行了全面測試。
  2. After the transformation of the shift flow to the total low - temperature shift process, the steam consumption per ton of ammonia drops remarkably, but the resistance in the catalyst beds increases rapidly

    摘要將流程改為全低工藝后,噸氨蒸汽消耗明顯下,但觸媒床層阻力迅上升。
  3. Then, taking into account the effect of the compression of the approach roadway and the differential slope of the bridge slab, the author analyzes the dynamic response of man - vehicle - road system when the vehicle approaches and leaves the bridge by means of laplace transform, the curve of man ' s acceleration versus time, the vertical force between the vehicle and road versus time, the man ' s maximum transient vibration value and the maximum force between the vehicle and road are got, and the program about the calculating progress above are edited. based on the analysis above, the influence on the maximum transient vibration value of some parameters about the vehicle and road such as the movement direction and speed and weight of the vehicle, the differential slope of the bridge slab and the length of the approach slab, are studied, and some conclusion are given

    分上橋和下橋兩種情況,考慮車路耦合和橋面沉坡差的影響,對車輛通過設和不設搭板的路橋過渡段時「人?車?路」系統的相互作用用拉普拉斯法進行了動力響應分析,得到了人的加度及路面對車的垂直作用力隨時間的化曲線、人的加度最大瞬態振動值和路面對車的最大作用力,分析了車輛的行進方向、度和載重,橋面沉坡差和搭板長度等車和路各參數對計算結果的影響,並編制了相應的計算程序。
  4. As with paging, this mapping requires two memory references per logical address, effectively slowing the computer system by a factor of two, unless something is done

    如同對源程序編碼給予定位一樣,這種需要每一邏輯地址有兩個內存參考。如果沒有什麼措施,則會有效地使用計算機系統運算低一半。
  5. The frequency analysis results show conclusions as follows : 1. the relative valid spectral power is declined with the volume percentage of inclusions in terms of exponent curve and the tendency of negative direction is same to that of forward direction

    當ly12鋁合金細小夾雜物(小於0 . 16mm )的體積百分數從0 0 . 35時,在35 50mhz的頻帶范圍內,超聲波形的有效譜功率按近似指數曲線快,沿相反方向檢測時其趨勢相同。
  6. As to the video signal, alarm signal, control signal, are all weak electricity signal, exceedingly easily be subjected to the jam, in case the power supply system does not steady, wave propag ation is greatly, the harmonic content of power source overtops, the veins wave factors are great unduly, and even power source equipment breakdown, outputting abnormal, will be about to affect the video signal image effect, and dependability cuts downs to the security and alarming system. we adopt fast fu lye ' s mutation rule - fft alternatives, by the way of carrying fft alternatives to the local junction circuit, regulated power supply, ups ' s power source, and switch power source, thereby diagnose every degree harmonious wave content of power souse, and abnormal coefficient, compared to the normal working situation. thereby diagnose out the working condition of the regulated power supply, ups ' s power source, and switch power source

    如果有供電系統不穩定、波動大,電源的諧波含量過高,紋波系數過大,乃至電源設備損壞、輸出異常等情況出現,將會嚴重影響視頻信號的圖像效果,大大低防盜系統的穩定性和可靠性,我們採用快傅利葉原理,即fft,通過對市電、穩壓電源、 ups電源、開關電源等的電壓信號進行fft,從而得出信號中各次諧波的含量及信號畸系數,並將其與正常工況下的參數進行對比,從而進一步診斷出穩壓電源、 ups電源、開關電源等設備的運行狀況;組成監控系統的設備長期處于工作狀態,往往由於設備散熱條件不好、設備老化故障等原因導致設備表面溫度過高,從而影響設備的正常運行,低設備的使用壽命。
  7. In the process of gathering image, it must produce noise, otherwise, we focus on the image character that we are interested in when we do it ; so we should use the technology of histogram equalization of image, windows conversion, removing noise by smoothness and filtering to enhance the image

    將人工檢測得到的圖像進行圖像預處理,將32位真彩色圖像轉化成灰度圖像。低了數據童,加快了圖像處理度。應用圖像的直方圖均衡、窗口、平滑去噪、濾波等處理技術對圖像進行去噪和增強,得到本研究所需要的圖像特徵。
  8. The method reduces the data to search via decomposing the image to several effectual subimages by the wavelet, then reduces the searching space through multi - resolution analysis, and refine the solution using an iterative refinement algorithm finally

    該方法利用小波將圖像分成若干層次,通過引入有效子圖的概念來低待搜索的數據量,應用小波理論的多分辨分析思想來縮小搜索空間,最後通過迭代求精演算法實現了圖像的快、高精度配準。
  9. Paper [ 76 ] provides a integer algorithm for rasterizing free curves, we need change the curve form to implicit function form, then use curve ' s positive - negative property to draw, but we ca n ' t use this algorithm when curve ' s degree is higher than 3 and this algorithm ca n ' t avoid using multiplication ; paper [ 77 ] provides a new generating algorithm, this algorithm can draw bezier very well, but for b - spline curve, we need use convert them into bernstein base form. because this process spends a lot of time, this algorithm has not a good speed and effect for rendering rational b - spline curve

    現在經常採用的演算法也是基於幾何的演算法(即線式生成演算法)和基於像素的演算法(點式生成演算法) ;文獻78 ]提供了一種有理參數曲線的快逐點生成演算法,該演算法對有理b吮ier曲線的繪制,能起到很好的作用,但是對于有理b樣條曲線,必須先通過多項式的代數基與bemstein基間的矩陣,把原式用bemstein基表示,這一過程由於計算量大,低了曲線生成的度和效率
  10. The emergence of the ordinary digital images ( which in this paper means the digital images acquired by common non - metric digital cameras ), resolved the the problem of acquiring images quickly on the spot, and lowered the requirement for equipments and skills in photogrammetry, so that made photogrammetry a whole digital process. but all current ways to the measurement of ordinary images are based on dlt or bundles theory, which both require a lot of control points distributing properly, and are inapplicable. in order to increase the adaptability and accuracy of digital close - range photogrammetry based on common digital cameras, researches and experiments have been done on these methods in this paper, as following : 1

    普通數碼影像(在本文中主要指採用普通非量測數碼相機獲得的數碼影像)的出現,解決了現場快獲取影像的問題,且低了近景攝影測量作業對設備及技能的要求,並使攝影測量過程成為全數字流程,但現有的對普通數字影像的量測處理演算法均是基於直接線性或光線束理論的,存在像控點要求多、分佈要求高、不適宜應用的缺點。
  11. A decoding algorithm based on transform and fast hadamard transform changes the matrix multiplication to the addition, subtraction and position exchanging among the matrix elements, so reduces the demand of the instrument for computer

    基於和快阿達瑪的解碼演算法,將矩陣乘法簡化為矩陣元素間的加、減運算和位置交低了儀器對微機系統的要求。
  12. Also, the harmonic resonance frequency was lowered to that of below idle - allowing us to shut out the unwanted vibrations often caused by the twisting force generated by the engine during torque rate changes

    諧振頻率可以到怠以下,在轉矩期間由發動機扭矩產生的震動可以排除。
  13. And other ions in oscillographic chronopotentiometric determination. compared with rpnn and wnn, combination of the wavelet transform and neural network for ocpd has higher prediction accuracy and less convergence epoch. this can be explained from two aspects. firstly, the network operation rate has been greatly enhanced because the optimal detail signal obtained after the wavelet transform not only is the characteristic information in original signal, but also has less number of data points than that of original signal. secondly, the higher prediction accuracy can be obtained because detail signal used as network input contains lower noise. as a result, the potential application of cwtnn for ocpd and other electroanalytical methods will be very excellent

    這一方面是因為使用經小波壓縮后的信號作為神經網路的輸入,壓縮后的信號不僅提取了原信號中的特徵信息,而且使網路輸入的數據點數大幅度下,大大提高了網路的運算度。另一方面,由於選用了較高次分解所得的高頻部分作為網路輸入,從而即使在原始信號中含有較高的嗓音時也能獲得較高的預測準確度。因此,將具有壓縮功能的小波與神經網路相結合的方法必將得到廣泛的應用。
  14. A new remote sensing image coding scheme based on the biorthogonal wavelet transform and revised spiht algorithm is proposed according to the statistical characteristic of remote sensing image data. the experimental results show that the proposed scheme could largely speed up the encoding process and reduce computational complexity on condition that reconstructed image quality is sacrificed little. meanwhile, this scheme has advantage over other algorithms in real time encoding

    本文針對遙感圖像的數據特點,提出了結合雙正交小波和改進spiht演算法的內嵌小波編碼方案.實驗結果表明,本文的方法能夠在幾乎不低恢復圖像質量的前提下低了計算復雜度,提高了編碼度,有利於實時編碼
  15. This method can maintain the superiority of traditional wavelet transform to effectively remove temporal redundancy. in addition, owing to the feather of the integer form of wavelet lifting scheme, the computational complexity and memory requirement are reduced, which can enhance the performance of the wavelet video coding system

    該方法能夠保持傳統小波的優勢,高效的去除時域冗餘信息,同時通過提升小波的整型能夠快實現的特點,低了計算復雜度,減小了內存需求,提高了小波視頻編碼器的性能。
  16. In chapter 4, i performed the analyzing work with wavelet and fastica and find that wavelet was a high efficient way to filter the cep signal when i set the wavelet and scaling function to haar, decomposing level to 4, threshold method to fixed to threshold and white - noise structure to scaled white - noise. it took the advantage that reduced the accumulating times to 60 with more smooth signal and less distortion. but fastica takes no advantage on this facet

    本文通過小波和獨立分量快分析模式識別的方法對cep數據進行了分析處理,同時與數字低通橢圓濾波器的處理效果進行了比較,發現用小波對cep的數據進行濾波處理時,可以將數據的疊加次數從120低到60次左右,且信號的質量要比以前的處理方法好;但是獨立分量快分析方法效果不很好。
  17. Variable structure control with sliding mode ( vscsm ) has the peculiarity such as reduced order, better robustness and quickly response and it has been broadly used in the field of control with the development of computer technology and the produce of high - speed switch circuit, but it is few applied to complex process systems

    滑模結構控制具有階、魯棒性強、響應快等特點,隨著計算機技術的發展和高電路的產生,滑模控制理論目前在控制領域得到了廣泛應用,但是在復雜過程式控制制系統中的應用不多。
  18. We highlight the key points of this dissertation at the end of this charter. in chapter 2, a modified projection transformation method is presented, which utilizes preliminary estimation of interference doa. it is demonstrated that the side lobe performance of adapted antenna patterns can be significantly improved with this method and increased convergence rate of adaptive algorithm when the array manifold is not known exactly

    針對投影預在大信噪比時性能下的缺點,提出了一種改進的基於投影預自適應波束形成演算法,通過對陣列協方差矩陣進行維處理,既可抑制擾動誤差又可低運算量,增強陣列的sinr輸出,具有良好的波束合成性能和較快收斂度。
  19. That is by inserting known symbols or pilots in time and frequency domain to estimate the channel frequency response. the proposed method employs iterative low - pass filtering in transform domain which can reduce additive white gaussian noise and inter - carrier interference effectively

    該估計演算法採用在域多次迭代濾波的方式,能夠顯著低高斯噪聲和載波間干擾( ici )對估計性能的影響,同時快fft演算法也使得域濾波得比較簡便。
  20. Combining integer with binary wavelet, a1video compression technique that only integer additions and shifts required is proposed in this paper, compared to the classic methods, the presented algorithm needs less hardware cost, and computational complexity is also reduced greatly

    摘要將視頻壓縮和小波理論的最新發展整數小波和二進制小波相結合,提出只需整數加法和移位的視頻壓縮演算法,該演算法所需的硬體成本比一般的基於三維小波的演算法成本大大低,而度大幅度加快。
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