overshoot time 中文意思是什麼
overshoot time
解釋
過沖時間-
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。 -
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。 -
In neuro - element pid and psd controllers if the time delay of the controlled object, is too long, the overshoot of the system will be too high and system even will be unstable. in order to solve this problem, the neuro controller is combined with the smith - predictor. thus the influence of time - delay to control system is overcome effectively
單神經元pid和psd控制演算法在被控對象存在大時滯時會產生超調，甚至使系統失穩，為了解決這一問題，本文最後將smith預估器引入了單神經元控制器中，從而很好地解決了時滯對系統的影響。 -
Theoretical analysis and simulation experiment showed that this kind of controller can improve the dynamic characteristic of the positioning table with a short setting time, little overshoot and a fast dynamic response, and can also restrain disturbance and high frequency vibration
理論分析和模擬實驗證明，該控制器能較好地改善此類平臺的動態特性，具有調節時間短、無超調和動態響應準確快速等優點，並能夠有效提高系統的杭干擾和高頻振動能力，所得結論對此類平臺控制器的設計具有一定指導意義。 -
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。 -
Simulations results indicate that the optimized controller based on the evolutionary principle of gas outperforms the conventional one greatly in overshoot, settling time and mean square error
模擬結果表明，採用經過遺傳演算法優化的模糊控制器，所得控制系統的超調量、調整時間以及均方誤差這三個指標都大大優于常規模糊控制器的控制效果。 -
Then, the designed controller was adjusted grounding on the working above. the results of the experiment show that the brushless dc motor servo system controlled by our controller runs well and has the advantages of no overshoot, better real - time quality, good responding and location precision
調試結果表明所設計的電路具有工作穩定，抗干擾能力強等特點，經與驅動器和機械繫統聯調表明，使用本文所研製的控制器進行控制的無刷直流伺服電機系統運行性能良好，具有無超調，實時性、響應性好，定位精確等特點，滿足系統的設計要求。 -
To restrain the time - delay of the startup phase of the temperature and improve the response speed, the fuzzy - pi controller with predictive control is adopted to the startup phase. this control mode can decrease the system overshoot and ensure the system rapidity. the predictive control can restrain the time - delay of the controlled object
為了解決溫度啟動過程中的時間滯后，改善系統的響應速度，採用單獨的溫度啟動控制策略，啟動階段採用帶預測的模糊- pi控制器，在保證系統的快速性的基礎上盡量減少系統超調，同時對控制對象的時間滯後有抑制作用。 -
After researched fuzzy self - tuning pid parameters controller, a simulation experiment is shown in this paper, which demonstrated this controller is feasible. at last, a practical experiment is made with the efpt process - control equipment, the result of the experiment manifests : fuzzy self - tuning pid parameters controller integrate the advantage of pid controller and the fuzzy controller, it has the following character : small overshoot ; short transient time ; excellent control accuracy and no stabilizing error
本文在設計的pid參數模糊自整定控制器的基礎上進行了模擬實驗，論證了這種控制器的可行性，最後在efpt過程實驗裝置上進行了模擬實驗，實驗結果表明pid參數模糊自整定控制器集合了pid控制器和智能權模糊控制器所具有的優點，能很好地控制鍋爐液位的穩定，具有超調量小，過渡時間短，控制精度高，無穩態偏差的特點。
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