tracking loop 中文意思是什麼
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Using lyapunov stability theory, it has been shown that the control scheme guarantees that all the variables of closed - loop system are bounded. moreover, the mean - square tracking error can be made arbitrarily small by choosing some design parameters appropriately
Lyapunov穩定性分析結果表明，本文所提出的控制器保證了閉環系統內的所有信號都是有界的，通過選擇適當的設計參數，可以使跟蹤誤差的均方根任意小。 -
As the application of rake receivers with multitaps is widely used in cellularcdma systems for exploiting path diversity, the closed - loop power control schemesshould make use of the multitap rake receivers for tracking the power variation dueto path loss, slow fading, and fast fading
同時，本文給出的自適應變步長閉環功率控制演算法利用rake接收機跟蹤通道的變化，與傳統的固定步長閉環功率控制相比獲得了較小的ebi0標準差。 -
The tracking method of interference delay is studied and simulated. referring to late - early loop gate, a method that applies to this system is proposed. slight adjustment of delay difference is done by interpolation, so the whole digital structure is obtained
以數字通信中的遲-早門環路為基礎，提出了適用於pcma系統的跟蹤環路，並且利用插值的方法實現了時延差的微調，得到全數字化的設計結構。 -
In this dissertation, we studied the tcra1101plus total station position system, which introduced the principle and characters of the instrument ' s closed loop tracking system. also we explained the cause of prism ' s position error and brought forward mathematic model to correct, moreover, the good results has been drawn form the expenriments. the kinetic survey system have been realized, which the sampling rate attain more than 5hz and the position precision can be less than 2mm on condition that targeted - point moving slowly at the velocity below 2cm / s. having finished the survey system to examine whether the fine - tuning stewart platform in good status, we have finished mensurating the position reference of the fine - tuning stewart platform and the offset of the prism
在此基礎上研製了多臺儀器在線控制高頻采樣動態跟蹤測量系統，采樣率大於5hz ，在跟蹤小於2cm / s低速運動目標時，測量精度好於2mm ；完成對饋源二次精調系統的檢測，包括對二次精調平臺位置基準的標定和觀測棱鏡偏心差的測定；設計不同動態測量實驗，對全站儀動態跟蹤的誤差來源和特點進行了分析；從實驗角度，對全站儀的測量時滯及其穩定性進行了測試分析，給出了定量的結果；比較了全站儀和計算機的內部時間系統，發現兩者存在較大差異。 -
The global asymptotical tracking of given trajectories is achieved and the boundedness of all signals of the resulted closed - loop system is also guaranteed
兩種設計方案都實現了對給定目標軌線的全局漸近跟蹤，保證了閉環系統所有信號全局一致有界。 -
It is shown that the proposed scheme guarantees the stability of the closed - loop system and achieves tracking performance idex, meanwhile the influences of external disturbance, neural network approximation error and the cross - coupling of input to output on the tracking error are reduced to a prescribed level
該方法不僅保證了閉環系統的穩定，而且使外部干擾、神經網路逼近誤差及輸入對輸出的交叉耦合對跟蹤誤差的影響衰減到給定的水平。 -
Chaos in three typical topology power electronic converters with a close loop controller is studied. the discrete iterative model is established and analyzed for the chaos in close loop boost converter working in discontinuous conduct mode. the tracking control method is used to control chaos of this converter, simulation results show its effectiveness
研究了三種典型拓撲結構的電力電子變換器閉環工作時的混沌現象，針對工作在電流斷續模式（ dcm ）下的boost變換器中的混沌現象，分析了其數學模型，並採用軌跡跟蹤控制方法進行了控制，模擬結果表明了該方法的有效性。 -
The mrafc scheme employs a reference model to provide closed - loop performance feedback for generating or modifying a fuzzy controller ' s knowledge base. the adaptive compensation term of optimal approximation error is adopted. by theoretical analysis, the closed - loop fuzzy control system is proved to be globally stable, with tracking error converging to zero
該方案利用參考模型作為閉環系統的反饋信號來產生、調節模糊控制器的規則庫，並通過引入最優逼近誤差的自適應補償項來消除建模誤差的影響，不但能保證閉環系統穩定，而且可使跟蹤誤差收斂到零。 -
Pn code synchronization algorithm based on serial - search acquisition scheme and delay - looked loop tracking is discussed in detail
闡述了基於滑動相關捕獲及延遲跟蹤環跟蹤的偽碼同步技術的設計與實現。 -
The antenna pointing control is open loop control without feedback. the antenna pointing errors due to antenna tracking motion and satellite attitude adjusting ( trusting ) were analyzed, as well as the influence of damping, tacking velocity and trusting time
文章分析了天線作跟蹤運動和星體作姿態調整時，對星體姿態控制精度和天線的指向精度影響，同時分析了阻尼、跟蹤速度、噴氣脈沖寬度等因素變化對動力耦合程度的影響。 -
The other way, theoretical analysis of weld tracking system with a leading sensor is stated, based on the analyzing of movement process of the tracking system, a loop control structure diagram is presented, the deuce vision feedback system is used and realized the repeated and automatic tracking in multiplayer seam and controlling of system of tracking and system of motion
同時就傳感器超前檢測式焊縫自動跟蹤系統進行了深入的理論分析，在分析該系統跟蹤過程運動關系的基礎上，建立了系統的閉環控制關系圖，並提出了其系統數學離散控制結構簡化圖。採用兩點式視覺伺服反饋系統，實現機器人在多層多道焊接時的重復自動跟蹤以及跟蹤機構的控制和焊炬橫向調節機構的控制，並使之協調聯動，滿足焊接過程的要求。 -
First, we analysize the performance of coherent and noncoherent dlls, then we give an implementation scheme of dll and a design method of carrier tracking loop. the design methods and a implemention scheme of a fir shaping filter is proposed in the fifth part
首先分析了相干和非相干延遲鎖定環的性能，接著給出了一種dll跟蹤環路的實現方案和一種載波跟蹤環路的設計方法。第五部分介紹了一種fir成型濾波器的設計和實現方法。 -
It was proved that the tracking error converges to the prescribed boundary layer and all the signals in the closed - loop system were bounded
演算法保證閉環系統所有信號的有界性且使得跟蹤誤差收斂于任意設定的飽和層內。 -
After analyzing compensation conditions for 3 - axis stabilization to overcome disturbance from ship surge, sway and yaw, two control strategies - feed - forward compensation and closed - loop feedback compensation - are given. these two strategies are applied to antenna stabilized tracking system with good performance. intelligent pid is used in closed - loop feedback compensation to get high tracking precision and rapid response
重點分析了天線穩定控制系統的三軸補償條件，提出了穩定系統抑止載體擾動的控制策略：對于橫滾和俯仰系統採用前饋補償的控制策略；對于方位系統，在以步進電機為驅動元件的特定條件下，研究了變控制周期的閉環反饋策略，同時成功將智能pid演算法應用於實際系統，提高了系統的跟蹤精度和響應快速性。 -
The state of closed - loop control system is proved to be bounded with tracking error converging to zero
證明了閉環模糊控制系統全狀態有界和跟蹤誤差收斂到零。 -
Carrier tracking loop
載波跟蹤迴路 -
To fulfill the dynamic requirements of the system, double loops control system with velocity stabilization loop and tracking loop is applied
為了實現系統的動態指標要求，確定採用含有速率穩定環和跟蹤環的雙迴路控制系統。 -
First, we classify the multipath mitigation techniques into four categories, and then the presentation of principles and simulation of performances are done of three widely - used techniques of multipath mitigation, which are based on the code tracking loop with the name of narrow - correlator - spacing technique 、 els ( early late slope ) technique and medll technique. from the presentation and simulation, the medll technique is selected as the multipath mitigation algorithm in signal processing ’ s scope.
本章首先對多徑消除技術進行了分類，然後主要對基於碼跟蹤環路的三種技術-窄相關（ narrowcorrelatorspacing ）技術、 els （ earlylateslope ）技術和medll （ multipathestimatingdelaylockloop ）技術-進行原理分析和性能模擬，從中選擇medll技術作為接收機信號處理階段的多徑消除演算法。 -
It is necessary that the receiver tracks the acquired signals steadily and credibly to ensure the successful demodulation process. in this thesis, an improved tracking loop design method is presented which adopts self - adaptation parameters and varied bandwidth tracking technique to adapt to the input signals, and improves the acquisition and tracking performance
接收機穩定可靠地跟蹤被捕獲信號保證成功解調是必要的，本文介紹一種改善的鎖相環設計方法，這種方法採用自適應參數和變帶寬跟蹤技術來調整輸入信號改善捕獲和跟蹤性能。 -
All digital frequency offset tracking loop in ofdm systems
系統中的全數字頻偏跟蹤環
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