time optimal problem 中文意思是什麼
time optimal problem
解釋
時間最佳問題-
Abstract : the paper emphasizes on exoatmospheric antimissile missile rapid reaiming problem, and according to pontryagin ' s maximum principle the optimal control law in the conditions of long miss distance and long elimination time is presented
文摘:針對大氣層外反導導彈快速重新瞄準問題，在脫靶量和消除它的時間都比較大的情況下，用龐特里亞金極大值原理求出了最優控制規律。 -
By use of - perturbation method with spatial discretization, the hydraulic transient system controlled by quasilinear partial differential equation was converted to a time - continuous linear system, so that the inverse problem of hydraulic transients under limited pressure could be sol ed with the optimal control theory for time - continuous systems
採用-攝動法並經過空間離散，將由擬線性偏微分方程式控制制的有壓瞬變流系統轉化為時間連續線性系統，從而使有壓瞬變流限壓控制反問題能應用時間連續系統最優控制理論來求解。 -
It is difficult to be settled by classical theories because of fixed quality and quantity. this thesis bases on the improvement of traditional way, overcomes its i ack experience, takes the more advanced fuzzy decision - making and optimal selection theory, researches into the established model and gets the result that it ' s best to set pangtoupao storage and detention flood area on the left side of menjiang river by comparing the four schemes and ten objectives of fixed quality and quantity. the result holds identical views with the result of usual economic evaluation. so it ' s the first time using fuzzy decision - making and optimal selection theory to resolve the important and pragmatic problem comprehensively and scientifically
本文在總結用傳統的方法研究經驗與不足的基礎上，採用目前較先進的模糊優化理論及建立起的模型進行蓄滯洪區設置及規模研究，通過對嫩江四個蓄滯洪區方案， 10個定性定量目標的優化比選，得出在嫩江左岸設置胖頭泡蓄滯洪區最優，其優選結果與採用常用經濟評價方法所得結果基本一致，從而第一次用模糊優化理論較全面科學地解決松花江流域防洪工程中確定蓄滯洪區規模這一重大實際問題。 -
According to the optimization of wagon flow organizing, the author regards xiang - shi line and interrelated technical station as a logistic system, and proofs the optimal layout of this line, at the same time, applies the method cost, the avoiding vice optimizing, the means of comparison and analysis etc. combing area of xiang - shi line, the author analyses the present situation and main problem
本文從車流組織優化入手，把襄石線及相關的技術站視為一個物流系統，從系統優化的角度論證襄石線最優的區段站設置方案，運用了系統管理觀念，包括總成本法、避免次優化、得失比較分析法等。 -
Conditions of normal mode realization are deduced and optimized model with the multivariate mode indicator function as the target function is built. through solving the maximal eigenvalue problem, the original shaker force vector of appropriation is reached. then the realization approach of the optimal shaker force vector based on single shape principle is proposed and at the same time the automatization of normal mode appropriation is realized
對于模態物理分離技術的多點正弦激振純模態試驗技術，尋求其最佳激振力矢量是最為關鍵的環節，本文先推導出純模態實現的條件，建立以多變量模態指示函數為目標函數的優化模型，通過求解最大特徵值問題，得出適調純模態的初始激振力矢量，再提出以單純形原理為基礎的最佳激振力矢量的實現方法，同時也實現了純模態適調過程的自動化。 -
Based on netomac, a software package for power system simulation, the model and algorithm of pre - dispatch schedule in generation markets, excitation system parameter setting, and power system small signal stability anaylsis are studied in this thesis. the main work is as follows : a model of pre - dispatch schedule is proposed, whose target is to minimize the market purchasing price ( mpp ) in the whole pre - dispatch period. then according to the characteristics of pre - dispatch schedule, the model of pre - dispatch schedule is simplified to minimize the mpp in each pre - dispatch time, and a three - step algorithm of pre - dispatch schedule is designed : dealing with the optimal problem in the whole period of pre - dispatch with static planning method, solving the problem of combination of machines with pr1 method, resolving problem of optimal power flow ( opf ) with modified powell method
本文基於netomac模擬軟體，以發電市場預調度計劃模型及演算法、勵磁系統參數整定和電力系統小擾動穩定性分析為研究內容，主要做了以下工作：建立了以整個預調度計劃周期內的市場購電價格最小為目標的發電市場預調度計劃模型，並根據預調度計劃問題狀態數多、變量多、混合整數、非解析的特點，將預調度計劃模型的目標函數簡化為各時段的市場清算電價最小，設計了三段式預調度演算法：用靜態規劃法求解整個預調度計劃周期內的優化問題；用優先級法求解機組組合問題；用改進的powell法求解最優潮流問題。 -
For the nonlinear two - point boundary value problem with both time - delay terms and time - advanced terms driven by the optimal control theory, we build a sequence of nonhomogeneous linear two - point boundary value problems according to the successive approximation approach of constant differential equation
再利用常微分方程的逐次逼近法，將由系統的最優控制問題得到的即含有時滯項又含有超前項的非線性兩點邊值問題化為非齊次線性兩點邊值問題族。 -
For a nonlinear system with time - delay, the optimal control problem based on quadratic performance indexes is usually transformed to a nonlinear two - point boundary value problem with not only time - delay terms but also time - advance terms. therefore, this kind of optimal control problem is especially difficult to be solved, no matter exact solutions or numeral solutions
對于帶時滯的非線性控制系統，其基於二次型性能指標的最優控制問題往往轉化為一個既有時間滯后項又有時間超前項的非線性兩點邊值問題，因此解決這一類控制問題尤其困難，不論是求其精確解還是數值解。 -
Abstract : in this paper, we propose an improved lagrangian relaxation algorithm to solve job - shop scheduling problems. besides the addition of augmented objective, we expand the search scope of near - optimal solutions and improve the computational efficiency greatly by restricting the solution scope of sub - problems and modifying the search method of dual problem. at the same time, we develop a genetic algorithm combining with the lr ( lagrangian relaxation ) method. using the numerous useful solutions we get in the lagrangian relaxation as the original genes, we can improve the solution further. test results show that these methods achieve satisfied outcome for job - shop problems. they can also be applyed to other programming problems with constraints
文摘:針對車間調度問題，提出了一種改進的拉氏鬆弛演算法.在增加輔助目標函數的基礎上，通過對子問題的限制和搜索策略的改變，使拉氏演算法的計算量減少，近優解的搜索能力有很大改善.本文還提出了一種基因優化演算法，充分利用拉氏演算法得到的多個近優解，進一步優化結果.模擬結果表明對車間調度問題得到了較好的結果.本方法也可用於其它有約束的規劃問題 -
In this paper, the problem of stochastic optimal control with uncertain terminating time is discussed
摘要文章研究了終時不確定的隨機最優控制問題。 -
By use of transform, the problem of stochastic optimal control with uncertain terminating time is transformed into that with determinate terminating time ; then the problem is solved using the theory of stochastic optimal control with determinate terminating time
通過變換，將終時不確定的隨機最優控制問題轉化為終時確定的隨機最優控制問題；然後，利用終時確定的隨機最優控制理論來求解。 -
The prediction control problem for discrete time - delay system and continuous time - delay system with sinusoidal disturbance is concerned in this paper. chapter 3 is to remove the time - delay from a discrete system with control time - delay by predictive control. the state predictive observer and optimal predictive controller for the discrete delay system based on a state space model are presented
對于離散時滯系統，本文第三章通過構造預測模型所得的系統輸出預測向量和系統的控制向量，為系統設計了全維狀態預測觀測器（ spo ） ，並將該狀態預測觀測器應用於多步預測控制，根據最優控制理論，構建了全維模型預測控制器。 -
Predictive control is a form of control in which the current control action is obtained by on - line solving open - loop optimal control problem, and the above procedure is repeated based on new state and out measurements at the next time
預測控制通過在線求解一個有限時域開環最優控制問題來獲得最優預測控制序列，並將當前時刻的控製作用於對象，在下一采樣時刻基於新的狀態或輸出測量值重復上述過程。 -
An explicit expression to compute the h norm of the discrete - time symmetric system is established using the bounded real lemma. one explicit solution of stabilizing output feedback gains is obtained for the output feedback stabilization problem. ah explicit expression for h norm and the sub - optimal output feedback controllers have been obtained for the h control problem
證明邊界實引理在離散對稱系統時有單位矩陣解，利用這一性質給出一個計算h ~范數的格11浙江大學博士學位論文式，並給出對稱輸出反饋可穩定問題的一個明顯解和h 」控制次優輸出反饋控制器。 -
From the simulative experiment and comparing of different cooperative model, we find that toac cooperative model can solve multi - agent social organization, social convention, social evolution, coalition strategies, coalition stability, collaborative problem solving and task allocation in open and distributed multi - agent systems ; can organize multi - agent cooperation, enhance system dependability, reduce resource cost and system communication bottleneck problem ; can share the task and result of multi - agent, and can reach the global optimal of multi - agent utility in task oriented domains ; from time performance, toac model is better than cnp ( contract net protocol ) of r. smith, blackboard cooperative model of newell and the result share model of smith and davis
通過模擬試驗和結果分析，發現本文提出的toac模型，該模型能夠有效的解決在開放、分佈的mas環境中，多agent的社會組織、社會規范、社會演化、聯盟策略、聯盟穩定性、合作問題求解和任務分配，能夠有效的組織多agent間的協同、提高系統的可靠程度、降低資源開銷和系統通信瓶勁問題，能夠實現多agent任務和結果共享，並能夠達到面向任務領域多agent聯盟效用的全局最優。時間性能上toac模型要優于r . smith的合同網協同模型、 newell的黑板協同模型，以及smith和davis的結果共享協同模型。 -
The coding of the variables that describe the problem is always large. in order to find the best optimal result, it needs the larger population and the longer course of optimization. that will spend much time and money, so the appropriate population size is a factor that affects the efficiency of genetic algorithm
在應用遺傳演算法時，初始種群的產生一般是隨機的，它往往需要的編碼長度很大，導致需要很大的種群規模或者很長的進化過程才能有較好的優化效果，這將耗費大量的計算時間和費用。 -
At the same time, this thesis analyz es the optimal resourse allocation problem in video coding and reviews recent advances in rate - distortorn optimized video coding
同時本文還分析了視頻編碼中的最佳資源分配問題，詳細討論了率失真優化理論在信源編碼和通道編碼中應用的最新進展。 -
Abstract : a method named multi - times optimization is presented to solve the multi - specification optimization problem, which is difficult to solve using the variational optimal theory. in the method several demands are reduced to some sub - tasks. in every subtask a demand that can not be transformed into bound condition is taken as performance specification for optimazation, and the other demands are taken as bound conditions. by means of the method, the arrival time, number of turn, turn angle of the aircraft in the terminal area are selected as performance specification separately, and the general character of optimal flight route in the terminal area is given
文摘:為了給飛機提供一條能滿足多種指標要求的最優飛行軌跡，針對變分最優理論難以求解多指標優化問題，提出了命名為多次優化的方法，即將多要求的優化任務分成先後相繼的多次任務，每次任務中選取一種不能邊界轉化的要求作為最優性能指標，而其餘要求轉化為邊界條件.利用這一方法以時間、轉彎次數、轉彎角度為最優性能指標給出了終端區最優飛行軌跡的一般特徵 -
By analyzing the scalar velocity bound curve and combining distribute of acceleration limit, a time - optimal control algorithm was designed. the results of experiments show it can make full use of the capacity of motor while realizing the stability and positioning accuracy of system, solving the problem of time - optimal control
通過對標量速度邊界曲線的分析，結合加速度極限分佈情況，設計了一種在特定軌跡約束下機器人時間最優軌跡規劃演算法，以在保證系統穩定性和定位精度的前提下，充分發揮電機的性能。 -
Some results in time optimal tracing control problem of non - autonomous relaxed system with nonlinear control variables
具非線性控制變量的非自治松馳系統時間最優追蹤控制問題中的若干結果
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