超調變 的英文怎麼說
中文拼音 [chāodiàobiàn]
超調變
英文
overmodulation-
And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results
接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。Utilizing low denatured and defatted soybean flakers as material, a kind of functional food of soybean peptide nutrient solution which contains rich soybean peptide and little low - polysaccharide have been produced after the following production process : crushing, extracting, heat denaturing, enzyme digesting, acidifying, concocting, over - temperature sterling, canning, and so on
摘要以低變性脫脂豆粕為原料，經粉碎、浸出、熱變性、酶解、酸化、分離、調配、超高溫滅菌、灌裝等工藝生產出一種富含大豆肽、少量低聚糖的大豆肽營養液功能性食品。Finally, the controller working based on the combination of rbf neural networks and traditional pid control was applied to in aclinic kinetic machinery and lifting machinery of tower crane. the simulation of this controller was made using matlab, and the simulation results showed that the control system has some merits, such as quick response, little overshoot, well anti - jamming capacity, and little steady - state error, etc. both the dynamic property and static characteristic of this controller are better than traditional pid controller, and meet the tower crane
應用matlab對塔機的變幅和起升機構的運動控制進行模擬，模擬結果表明基於rbf神經網路整定pid的控制系統具有響應快、超調小及穩態誤差小等優點，其動、靜態性能優于單一pid控制，從而提高了塔式起重機工作機構的工作性能。It thoroughly analyses the drastic competitive market faced by yongsheng group, which consequentially promote the enterprise inside continuously to improve its labor productivity, product quality, and improve the outer circumstances of services, anisomerous structures on the employee ’ s quantity and quality, and the inner circumstances which limited and affected the whole stuff diathesis ’ s improvement and enhancement. it sums up the existing problems on yongsheng group ’ s human resources development and management and puts forward the mode of yongsheng group ’ s 1e3p1c human resources management system. the mode of 1e3p1c human resources management system is composed of engage system, position analyse system, performance examine system, pay administration system, culture system
永生集團同其他民營企業一樣也曾走過一段輝煌的時光，但隨著外部競爭環境的不斷變化，至1998年年底，已累計虧損200萬元，但近幾年來，集團高層管理者及時調整了管理思路和領導班子，至2005年低，集團公司利潤超過了公司重組集團效益最優時5個百分點，在長期的調查研究過程中，不難發現，永生企業在外部競爭環境日常激烈的情況下扭虧為盈並取得迅猛的發展的強大動力源很大程度上取決于其是在人力資源管理方面的及時調整，並在長期的模索中形成一套適合自身企業發展的科學合理的1e3p1c人力資源管理系統。Pre - data gathering module achieves the collection and communication of sixteen - route temperature signal. speed measuring and controlling module realizes the control of refolw soldering transfer speed by manipulating transducer. on - off outputting module fulfills calefaction control of calefaction tube by solid state relay. above position operator software programs by delphi, and realizes pid parameter automatic timing and no - oversnooting temperature control. software has friendly interface, convenient operation, complete functions
前置數據採集模塊完成16路溫度信號的採集和通訊；速度測量模塊與速度控制模塊通過控制變頻器來調節迴流焊的傳輸速度；開關量輸出模塊通過固態繼電器對加熱管進行控制；上位機軟體採用delphi編程，實現了pid參數自整定以及無超調的溫度控制。Undershoot undershoot refers to the amount by which voltage or frequency drops below the nominal value as the voltage regulator or governor responds to changes in load
下超調下超調指電壓調整器或控制器在應對負荷變化時，電壓或頻率低於額定的量。Model analysis shows that relaxation of the control of investment capital will increase the unfavorable balance of international payments and the correcting difficulty of the excess commodity supply in the market at home ; relaxation of speculative capital control will increase the correcting difficulty for outer unbalance ; under the springy exchange rate system, the action of fair mechanism of interest rate will make the economic shock of the international market interest rate increase with the decrease of the capital control system, thus the over regulation of exchange rate will easily happen
模型分析顯示：投資性資本管制放鬆會增大國際收支逆差和國內商品市場超額供給的矯正難度，投機性資本管制放鬆會增大外部失衡的矯正難度；彈性匯率制下，利率平價機製作用使國際市場利率變化的經濟沖擊隨資本管制度降低而增強，更易發生匯率超調。Superplastic co - deformation strengthening terms of flame spraying coating
表面噴熔層超塑性變形強化及其協調變形條件Simulation shows that the control scheme is adaptive to parametric variations and external disturbances, and the stepping motor with the proposed controller not only has a high controlling accuracy, but also possesses the characteristic of fast response with no overshoot
模擬結果表明：所得閉環系統對電動機運行參數的變化和負載干擾有良好自適應性，而且調節精度高，動態響應快，無超調。Through experimental research, the calculation formula that the pressure highly - adjusted capacity of two cylinder chambers varied with the change of step load and the formula about hydraulic elements main parameter ( rated pressure ) were both made, which had important valuation in selecting the main parameter about this hydraulic system
通過試驗研究得出了出口節流調速系統中液壓缸兩腔壓力超調量隨負載變化的計算公式以及出口節流調速系統中液壓元件主參數（額定壓力）計算公式，有利於正確選擇系統的元件及主參數。Then, as the substitute of the traditional pi controller, neuron adaptive psd controller is used to alternate the velocity loop of dc driver system, simulation results show that the super - shoot in new system is small and the performance in the way of anti - disturbance and anti - time - varying parameters are higher than the traditional pi controller and robustness of the dc driver system improved greatly, in addition, through analysis of the character of the neuron adaptive psd controller, the paper presents a neural network self - tuning control method for dc driver system in which the diagonal recurrent neural network is used to identify the plant to calculate the plant ' s sensitivity for psd controllers simulation results indicate that excellent static dynamic target was got with this control method and the performance of the system is improved greatly,
然後，應用單神經元自適應psd控制器改造調速系統的轉速環，代替傳統pi調節方式的轉速控制器。模擬表明，新系統在超調、抗負載擾動和參數時變方面性能優于的傳統的pi控制方式，系統的魯棒性增強。在分析單神經元自適應psd控制器特性后，本文提出用對角遞歸神經網路辯識控制對象，為psd控制器提供靈敏度參數，從而構成一神經網路自校正控制方案。Under different conditions, for example, with variable additional resists or system parameters, the system applies the variable structure controller to adjust the speed system with train. the results of simulation show the variable structure control can achieve a fast response, high stability under parametric variations and disturbances, with no overshoot. additionally, it has stability for the adjustment speed of atcs and provides the comfortable speed, for the travelers, and improves the system performance
採用變結構理論分析在不同情況下，如附加阻力變化，系統參數變化等，模擬滑模變結構控制器控制的列車自動調速控制系統，模擬結果表明，滑模變結構控制的列車自動調速控制系統能實現速度響應快、無超調，系統對參數的攝動和外部干擾不敏感，實現列車自動控制系統的速度調節的穩定性，保證旅客的舒適，改善了系統性能。Simulation results show that it has the smaller and the sooner response rate, and it is robust to vary of parameters with time
模擬實驗表明，該控制方法具有輸出響應超調量小、響應速度快的特點，並且對于參數的時變性，具有較強的魯棒性。Accorded to the experimental research, under different flow area of flow valve and different adjusted pressure of relief valve, conclusion that the regulation of the pressure p1, p2 in the two cylinder chambers varied with the change of step load were as follows : when the throttle valve was series - connected on the return oil - line in the metering - out control system, under the same flow area and the same adjusted pressure of relief valve, with the incremental quantity of step load, the pressure highly - adjusted capacity of the hydraulic cylinder chamber with piston - rod decreased, meanwhile, it ' s time of rise, time to peak and the governing time all decreased. while the pressure highly - adjusted capacity of the hydraulic cylinder chamber without piston - rod increased
通過試驗研究得出系統在不同的流量閥開度、不同溢流閥調節壓力（進口壓力）下，液壓缸兩腔壓力p _ 1 、 p _ 2隨階躍負載變化的規律：當出口節流調速系統的回油路上串接節流閥時，隨階躍負載的增加，在相同流量閥開度、相同溢流閥調節壓力的情況下，液壓缸有桿腔壓力p _ 2 （ t ）的超調量是減小的，上升時間、峰值時間以及調整時間也是減小的；液壓缸無桿腔壓力p _ 1 （ t ）的超調量是增加的。A local nonlinear feedback loop ( lnfl ) technique and a sigma - delta modulator ( sdm ) for promoting highly stable oversampling using the lnfl technique
一種局部非線性回授?路法，以及並利用此一局部非線性回授?路法改良之高穩定性超取樣積分三角調變器。In the research of non - liner variable control methods, the paper brought forward a kind of variable structure control machine with time - changing, non - liner, " standard time optimization " on - off super curved surface. the automatic system designed had quick dynamics - respondence, little, powerful robu
在非線性變結構控制方法研究中，本文提出了一種具有時變、非線性、 「準時間最優」開關超曲面的變結構控制器，由此所設計的控制系統動態響應速度快，超調小，魯棒性強，無穩態誤差。The neural adaptwe controller based on tat ar is ~ the state modl of twpuiators is mlished, and apve cothel methed is haced. the triulallon restilt indicates that this he coniml methed is more accot and hable. the inverse boc medl is investigated nd on hay neuial netwik system, then solndons of inverse twc model problern can be obtained for the ffo tirn
對壓電陶瓷的特性進行了分析，並針對其位移非線性、遲滯和蠕變等特性，提出了利用澈屯優化方法對壓電陶瓷微位移器的pid控鉆歸以元參數整定，在獲手得了優化的pid參數后，對系統進行變參數的pid控制，該控制系統超調In order to deduce the effects on dynamic performances, a method by using prediction filter is introduced. to minish overshoot subsection of input signal with exponent is adopted. these methods are proved by mathematic simulation
針對動態高型控制方法使系統動態性能變差的問題，提出了利用預測濾波技術改善系統動態性能的方法，進一步提出了利用指數函數將階躍輸入信號分段以降低系統超調量的方法，並通過數學模擬驗證了這兩種方法的有效性。The system based on pid control theory has characteristics of fast response speed and higher peak overshoot, and it also has a good performance of tracking, but it is lack of ability of disturbance rejection. because smvs control method is insensitive to the variations of the model parameters, nonlinear and exterior noises, the attitude stabilization system designed based on smvs has fast response speed, higher ability of disturbance rejection and has no peak overshoot, namely, the system is robust
模擬結果表明，基於pid控制規律設計的系統具有響應速度快但超調大的特點，系統的跟蹤性能較好，但抗干擾能力較差；滑模變結構控制方法因為其對模型參數的變化、非線性和外擾噪聲的不敏感性，設計的聲納基陣姿態穩定系統無超調，響應速度快而且抗干擾能力強，具有很好的魯棒性。Simulation of computer and dynamic experiments show : the sofpss has such characteristics as small overshoot, fast response speed, avoidable micro - amplitude oscillation and is not sensitive to changes of operating modes and external disturbances. the sofpss can effectively damp low - frequency oscillation in a large range and takes on strong adaptability
計算機模擬和動模實驗結果表明： sofpss超調小、響應速度快，且避免了微幅振蕩；對運行狀態的變化以及外界干擾不敏感，能夠在較大的運行范圍內有效地抑制振蕩，適應能力較強。分享友人