超調量 的英文怎麼說
中文拼音 [chāodiàoliáng]
超調量
英文
overshoot-
The control system of mould level is crucial to improve the slab quality in the continuous casting process, pid controller is used in the traditional mould level control, and it has some defaults, such as : at the start - up or finishing period of casting or during the changeover of tundish, pid control has a bad effect, its overshoot is large and its transient time is long ; the erosion of the tundish stopper and the submersed nozzles lead to the accuracy of control become bad ; the abrupt falloff of block in the submersed nozzles makes the level acutely fluctuate, and pid control can not overcome the disturbances resulted from the change of casting speed
結晶器液位控制系統是提高連鑄產品質量的關鍵環節，傳統的連鑄機液位控制方法採用常規的pid控制，存在如下不足：開始、結束澆注和換中間罐澆注時，控制效果差，超調量大，過渡時間長；塞棒頭和浸入式水口被腐蝕后引起控制精度差；浸入式水口堵塞物的突然脫落所引起的液位劇烈波動；無法克服拉速波動引起的擾動。Adopting current feedback suspension control algorithm, the stable region of control parameters are narrow, overshoot is great and unable to make the closed - loop system bandwidth narrow
目前採用的基於電流反饋的懸浮控制演算法，參數穩定范圍小、超調量大，且無法將閉環系統帶寬設計得較低。When the governing 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 increased, meanwhile, it ' s time of rise, time to peak and the governing time all increased. at the same time, the pressure highly - adjusted capacity of the hydraulic cylinder chamber without piston - rod increased
當出口節流調速系統的回油路上串接調速閥時，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 ）的超調量是增加的，上升時間、峰值時間以及調整時間也是增加的；液壓缸無桿腔壓力p _ 1 （ t ）的超調量是增加的。A method of fuzzy optimization design based on genetic algorithm is presented as a new method of parameter optimization design for dc double closed loop speed adjusting system. the method covers three steps. firstly, speed overshoot rate and settling time are chosen as performance indice according to the demand of engineering. these indice are normalized by using fuzzy membership function and then weighted to form objective function of optimization model of the system. secondly, the dynamic response curve of the system with corresponding parameters and peoformance indice are obtained by computerized numerical calculation and simulation. finally, parameters of engineering design are expanded as searching space ; and parameters of speed regulator and current regulator are taken as genes in chromosome. these genes in searching space are optimized to get best solution by way of genetic algorithm. as shown by experimental results, the parameters designed by this method are capable of significantly improving performance indice of the system, which proves that it is a practical and effective method
提出一種基於遺傳演算法的直流雙閉環調速系統參數優化設計方法.根據工程技術的要求，選用速度超調量和過渡時間作為參數優化性能指標.將該指標用模糊隸屬度函數歸一化，再加權平均形成系統優化模型的目標函數.採用計算機數值計算方法，通過模擬獲得系統對應參數的動態響應曲線及其性能指標.最後以工程設計的參數為搜索范圍，以速度調節器和電流調節器的參數為染色體中的基因，通過遺傳演算法在搜索范圍中優化這些基因，獲得優化解.實驗結果表明，所設計的參數能使系統性能指標有顯著提高Compared with the pid controller in the real - time experiment and off - line simulation, it shows that not only the output of system is small overshoot and rapid respond time when the logical rule controller acts, but also its control strategy is easy to be performed
與傳統的pid控制器作用相比，離線模擬和在線實驗表明，邏輯規則控制器作用下的系統輸出不僅超調量小，響應時間快，而且控制策略簡單易行。The stability, response time, overshoots and steady - state errors of the systems are analyzed ; and the result indicates the feasibility of the model
對系統的穩定性、過渡時間、超調量和穩態精度進行了分析，說明了該模型的可行性。The paper analyzed the relationship of the scale factors and several main performance indexes of the system ' s respond curve like over - regulation, divergence, surge - degree, steady - state error and transient time, and denoted these indexes by some fuzzy membership functions
溫室溫度響應的主要動態性能指標包括：超調量、系統發散程度、系統振蕩程度、穩態誤差、過渡過程時間等。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。And classic pid control method and numerical pid control method have been introduced in the paper. the paper adopt stabilization border method to set the pid parameters and simulates the control system which is based on matlab / simulink. simulation results indicate that pid control ’ s simulation results have a good effect in low - frequency stage, but it is not perfect in mid - frequency and high - frequency stage
採用穩定邊界法實現對pid參數的整定，並基於matlab / simulink對控制系統進行了模擬，模擬結果表明:低頻段pid控制正弦跟蹤曲線取得了良好的效果，而在中頻和高頻段時的跟蹤效果不是很好， pid控制的階躍響應超調量較大， pid控制三角波曲線的高頻性能也不理想。The shortages of traditional pid ( proportion integral differential ) controller are that the system ’ s overshoot is large, regulation time is long and parameter is hard to be real - time adjusted and the system is difficult to meet the real - time control
在這種情況下，傳統的pid控制器存在超調量大，調節時間長，參數不易實時在線調整的缺點，難以滿足實時控制的要求。Too early switch can not present the advantage of fuzzy controller and even lead to integral saturation, while too late switch can not turn into pid control because of the static state error of fuzzy - ped control. at last, the choice principle of the threshold is analyzed and simulated
當過早地切換會體現不出模糊控制的優點而使超調量增大，甚至造成積分飽和現象使系統失穩；當過遲切換，如果模糊控制器有較大的靜差，則有可能根本無法進入pid控制。The experiment target is to find a rule modification algorithm that makes overshoot smaller, convergence speed quicker
實驗目標是尋找超調量更小、收斂速度更快的規則校正演算法。But because of the conflict between quickness and the small temperature over setting point, it probably cannot satisfy the control demand
但它的快速性和超調量之間的矛盾關系，使它不一定能滿足快速升溫、超調小的技術要求。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。The simulation result shows that the control algorithm can improve dynamic characteristic of the automatic control system efficiently
模擬結果表明，該控制演算法較之常規控制演算法，在超調量等性能指標方面能夠非常有效的改善自動控制系統的動態性能。Meanwhile, it can adapt the varying parameters of controlled object. so this paper can give a conclusion safely that using these algorithm can get a good controlling results
模擬實踐表明這種演算法具有超調量小、穩定性好、對模型參數適應性強等特點，能夠取得良好的控制效果。But pid controller has its limitation, where its linear combination brings the contradiction in speediness and overshoot. in addition, reference input usually is non - differential
但是，經典pid控制器採用「線性組合」形式產生的控制量，常引起快速性和超調量及準確性之間的矛盾。The control algorithm is studied and simulated using matlab software. the result of simulation indicated that the control system has small exceeding value and good stability when use this control algorithm
用matlab軟體對控制演算法進行了研究與模擬，模擬結果表明該控制器具有較小的超調量和較好的穩定性。The results of experiment show that the maximum overshoot and static error of dynamic output of fuzzy control system are more less than that of pid control system, and it also has good robustness and stability
實驗結果表明，模糊控制器動態輸出的超調量和靜態誤差均比傳統pid小，並且控制系統具有良好的穩定性。The method of fuzzy modeling can be taken as a good candidate of this problem in this thesis, the inverted - pendulum system is firstly analyzed by using t - s fuzzy model due to its property of arbitrary approximation for the non - linearity. based on the parameters identification, simulations of system are made by using fuzzy logic toolbox of matlab. the results of comparison with lq approach show the performance improvement in the aspects of overshoot and fast response
本文首先利用模糊模型的非線性逼近能力，採用t - s模糊模型對小車-倒擺控制系統分析並實現了該系統的模糊建模及模糊模型各部分參數的辯識，在matlab模擬環境下藉助其模糊邏輯工具箱進行了系統的模擬，與採用線性二次最優控制的系統模擬結果進行比較，改善了系統超調量及快速響應性。分享友人