feedforward system 中文意思是什麼

feedforward system 解釋
前饋系統
  • feedforward : 前饋的
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. The system uses feedforward terms so we would expect to keep to a given closed loop gain ±10%.

    由於系統使用了前饋項，預期閉環增益保持在給定值的10之內。
  2. The other is an improved fuzzy neural network that is joined a compensative operation layer and adopts the improved center - or - gravity defuzzication in feedforward fuzzy neural network based on gaussian fuzzy logical system

    其二是改進的補償模糊神經網路。該網路在基於高斯模糊邏輯系統的前饋模糊神經網路中加入了補償運算層和採用了改進型中心反模糊化器。
  3. Finally, the friction model is applied after analyzing the mechanical structure of tracking system. the friction compensation had been obtained by differential feedforward applied to the output of position controller

    最後建立了低速跟蹤情況下的摩擦模型，並用微分前饋的方法實現摩擦補償，消除摩擦對跟蹤精度的影響，提高了跟蹤精度。
  4. As for single axis, pewin, the software given by the programmable multi - axis controller ( pmac ), is used to find the best parameters of the pid controller and feedforward compensation controller. then, the nonlinear friction in the system is compensated by the friction compensation controller with genetic algorithm ( ga ). the compensation controller can improve the system performance effectively

    對于單軸系統首先利用美國deltatau公司的可編程多軸控制器pmac自帶的控制軟體pewin進行pid參數的整定以及前饋補償環節的參數整定，然後分析系統存在的非線性摩擦力，利用遺傳演算法尋優摩擦力補償環節的參數，達到補償摩擦力的效果，有效地提高了系統的控制性能。
  5. Feedforward is generally known as the best performing linearization technique for its advantages, such as broadband, stability, etc. this paper introduces the theories of power amplifier nonlinear characters and feedforward technique. according to the rf specifications in 3gpp for wcdma transmitter power amplifier, an adaptive feedforward amplifier system is completed including eda simulation, circuits layout and main mechanical structure design

    本文根據3gpp對wcdma發射機功率放大器的射頻指標要求，在對功率放大器的非線性特性和前饋技術的特性進行詳細理論分析的基礎上，結合eda模擬工具，設計了基於自適應前饋的功放系統，並完成了系統的調試和測試。
  6. Feedforward linear power amplifier design for cdma2000 1x system

    系統正向前饋線性功率放大器設計
  7. 3. a rf pa linearziation system that combines rf predistorting technique and feedforward technique is present. contrasted with basic feedforward system, the main improvement of new system is the signal feature of error signal path

    由於在主功放和誤差功放前分別加上了射頻預失真單元，因此提高了整個系統的線性度和功率效率。
  8. A multiloop antenna pointing controller has been designed while three feedforward schemes are used in this control design. the simulation results show that the antenna pointing control system can improve the precision of the attitude angle and the attitude angle rate, and the antenna can slew to the neighborhood of tdrs fast, search and then track tdrs

    在設計好的天線跟蹤指向控制系統基礎上，採用前饋+反饋的復合控制策略設計了復合控制器，模擬結果表明設計的天線指向控制系統能夠較好的提高星體的姿態穩定度和控制精度，天線能夠快速回掃至中繼衛星附近並進行跟蹤，天線指向精度滿足設計要求，表明了所設計的天線指向控制系統的合理性和有效性。
  9. Also it is discussed how to improve loading performance and the actual results using invariance theory. by the feedforward signals of velocity and acceleration, it is expected to expend the bandwidth to 15hz or even higher and reduce the additional torque at 80 percent. in this thesis, i mainly explored the design theory of ehsls and made a lot of experiments on subsystems and the whole system

    本文的目的就是設計、調試帶有彈簧桿緩沖結構的單通道電液伺服加載臺，通過試驗比較、驗證不同控制演算法的工程實際效果；分析和研究應用結構不變性原理如何改善加載系統的動態性能，目的是通過引入速度和加速度的復合前饋信號將系統的動態頻帶提高到15hz左右，並且有效的抑制力加載系統固有的多餘力矩，抑制比要達到80以上。
  10. For gantry - moving type machining center servo system, in order to restrain the machine coupling influencing dual motors system, an adaptive decoupling control technology is first presented in this paper, and through feedforward decoupling ; the dual linear motors controller ' s parameters will be modified by the feedback. the synchronous control caused by the feedback resulting from the adaptive control law will keep synchronism with dual motors in position for realized synchrodrive

    針對龍門移動式鏜銑加工中心伺服系統，為了克服因兩個龍門立柱運動狀態差異形成的機械耦合對雙電機系統的影響，本文採用自適應解耦控制技術，先通過前饋解耦，再經過自適應律產生的反饋作用來修改雙直線電機控制器的參數，產生同步控制量，使雙電機在位置上保持一致，從而實現了雙電機的同步傳動。
  11. A design strategy based on state feedback and feedforward compensator for helicopter flight control system

    基於狀態反饋及前置補償策略的直升機飛控系統設計
  12. Compared with traditional feedforward, this paper presents an adaptive control method based on power detection minimization. with strong and fast digital signal processing ability, the adaptive system can control feedforward amplifier parameters exactly and suppress non - linear products at last by detecting changes of signals and environments

    與傳統前饋法相比，本文加入了基於最小功率檢測演算法的自適應控制電路，對輸入功率變化、溫漂和器件老化等導致系統性能下降的擾動進行自適應調整，使功放的非線性失真在很大程度上得到改善。
  13. The software adopted this auto - tuning algorithm is rationally designed ; its human machine interface is friendly ; its functionality is versatile ; and its application scope is broad, not only for single - loop control system, but for cascade and feedforward control systems

    採用該演算法開發的pid參數自整定軟體包設計合理、界面良好、易於操作、功能完善、應用范圍廣，不僅適合於單迴路控制系統的整定，而且也適合於串級控制和前饋控制復雜系統的整定。
  14. Presents a simple method of compensating friction against the character of the nonlinear model of a brushless dc motor system which transfers the original system model to a simple linear model using the method of input - output linearization, and estimates the coulomb friction in the system in real - time using a nonlinear friction estimator, and then compensate the friction in the system using a friction feedforward, and concludes from simulation results that this method can effectively eliminate the influence of friction in brushless dc motor systems

    針對無刷直流電動機系統的非線性數學模型特點，提出了一種簡單的摩擦補償方法.該方法首先利用輸入輸出線性化方法將原系統模型轉化為一種簡單的線性模型，然後給出一種非線性摩擦估計器實時估計系統中的庫侖摩擦值，最後利用摩擦前饋補償方法對其進行補償.模擬結果表明該方法可以有效地抑制無刷直流電動機系統中的摩擦影響
  15. In this thesis, the decoupling unit of vav system is designed in the way of feedforward conpensation. then the transfer function matrix of the feedforward conpensation decoupling unit of the 5 inputs & 5 outputs vav system is worked out. the decoupling conpensation unit can change the transfer function matrix of the open loop and closed loop control system into diagonal matrix, so that the coupling among the five control loops is eliminated, and vav system is decoupled

    本文採用前饋補償法設計了變風量空調系統的解耦補償器，並得出了五輸入、五輸出變風量空調系統前饋補償解耦器的傳遞函數矩陣，該解耦補償器可以使本文所研究的變風量空調控制系統的開環傳遞函數矩陣和閉環傳遞函數矩陣都變換為對角矩陣，從而解除五個控制迴路之間的耦合，使變風量空調系統實現解耦。
  16. The main contributions of this dissertation are summarized as follow : ( 1 ) an ilc approach combining feedforward with current feedback is developed based on optimal feedback control and the gradient method. a sufficient condition that guarantees the convergences is given for linear system. the procedures of designing the algorithm can employ lqr, h2 or h approaches to improve the convergence rate of learning in iterations

    本文的主要成果有： 1 、在開閉環綜合迭代學習控制結構的基礎上，分析了利用梯度下降法設計前饋迭代學習控制器時，為保證演算法的收斂性，閉環控制系統應該滿足的充分條件，並依據提高演算法收斂速率的優化條件，給出了基於lqr 、 h _ 2和h等優化控制技術的迭代學習控制演算法的設計方法。
  17. Identification of nonlinear time varying system using feedforward neural networks

    利用前饋神經網路的非線性時變系統的辯識
  18. Among others, introducing the speed and acceleration feedforward links and the notch filter into the control system and adopting integral - separate pid algorithm, etc., are effective measures taken to enhance the control performance

    其中，在控制演算法中引入帶有速度和加速度的前饋環節及陷波濾波器，並採用積分分離式pid演算法等是本文為提高控制性能而採取的有效措施。
  19. Based on the research of siso case, we employ the method of feedforward compensation to decouple multiple input and multiple output ( mimo ) plant. it is the key point to design h2 - optimization compensator with the approach of l2 - norm optimization so as to apply directly the result of siso case to the decoupled system

    在對單輸入單輸出的對象研究基礎之上，作者採用相對增益法和前饋補償方法對多輸入多輸出（ mimo ）的對象進行前饋補償解耦，在這一過程中關鍵就是引入頻域l _ 2范數優化的方法對補償器進行設計使之具有h _ 2優化的特點。
  20. During the research, finding some important as follow : if wanting to get an ideal linearity of duamoop feedforward system, needing an accurate balance of amplitude and phase, so the attenuation, the delay and the phase in the circuit must be designed accurately

    本項研究還發現，雙環前饋系統要獲得理想的線性化效果，還需要精確的幅度和相位平衡，這在電路的設計中表現為要對迴路中的衰減和延遲以及移相環節進行準確的設計。
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