time delays 中文意思是什麼
time delays
解釋
時間延誤-
In the light of the recent work in biological models, especially in the chemostat models, the dissertation provides a systematic study on the asymptotical behaviour of some chemostat models built by delay or diffusion differential equations. the main contents and results in this dissertation are as follows : i ) the global asymptotic behavior of the chemostat model with the beddington - deangelies functional responses and time delays is studied. the conditions for the uniform persistence of the competing populations are obtained via uniform persistence of infinite dimensional systems
本論文基於當前生物學模型，特別是恆化器模型的研究現狀，深入系統的研究了時滯和擴散方程描述的幾類恆化器系統的漸近性態，本文的主要內容包括以下幾個方面：一、研究了具有beddington - deangelies功能性反應函數的時滯恆化器模型，利用無窮維連續動力系統的一致持續生存的理論給出了兩競爭種群一致持續生存的充分條件，利用單調動力學系統得到了系統的全局漸近穩定性。 -
Our results imply that mutual interference in a species may result in coexistence of the two competing species and demonstrate that those time delays do not influence the competitive outcome of the organisms. ii ) the asymptotic behaviour of the chemostat model with mutual interference or without mutual interference is studied. for the two models with delay, the uniform persistence of the models are both proved under the conditions of the existence of the positive equilibrium
二、研究了無種內競爭和有種內競爭的具有階段結構的時滯恆化器模型的漸近性態，對于兩類模型，都在正平衡點存在性的條件下證明了該系統的一致持續生存，對于兩類相應的常微系統的模型，均在正平衡點存在性的條件下證明了該正平衡點的全局穩定性。 -
This dissertation investigates both existence of traveling wave solutions for delayed reaction diffusion systems and lattice differential equations, and global attractor of spatially discretized fitzhugh - nagumo equations with dirichlet or neumann boundary conditions. for delayed reaction diffusion systems, the existence of traveling wavefronts in diffusive and coorperative system with time delays is provided, firstly ; the monotone iteration scheme, together with upper - lower solution technique, is applied to establish the existence of traveling wavefronts of delayed reaction diffusion systems with some zero diffusive coefficients. secondly, schauder fixed point theorem is applied to some operators to prove the existence of traveling wave solutions in a properly subset equipped with exponential decay norm, which is obtained from a pair of upper and lower solutions for delayed reaction diffusion systems with non - quasimonotoiiicity
對于時滯反應擴散方程，我們先利用吳建宏和鄒幸福[ j . dynam . diff . eqns2001 （ 3 ） ]中的主要定理來研究時滯競爭擴散lotka - volterra系統波前解的存在性，給出了這個定理在非線性項滿足弱擬單調條件（ qm * ）時在系統情況中的應用；並利用單調迭代方法和上、下解技術，對于具有部分零擴散系數的時滯反應擴散方程建立波前解的存在性定理，對于具有部分零擴散系數的時滯反應擴散方程建立波前解的存在性定理。 -
The controlling factors in the stability of a given engine system are the time delays.
時滯是給定發動機系統穩定性的控制因素。 -
Base on the measurement of bearings and time - delays between different sensors, the equation of state and the equation of measurement are established
利用測得的方位序列和到達不同傳感器的時延差，建立了狀態方程和觀測方程。 -
A new method is presented. the travel time, including the time delays associated with overland folw pathways, is obtained. it is expected that the hillslope velocity and the stream velocity are different, and different equation is used. in the method, the fact that velocity increases going downstream in river systems is taken into account. after the travel time of each cell being calculated, the frequency distribution of the times of arrival of individual water droplets at the catchment outlet - giuh, is obtained
提出了一種匯流時間計算方法，匯流時間中包括坡地漫流時間和河道匯流時間。方法中坡地單元的匯流速度與河道單元的匯流速度採用不同的計算公式，同時考慮流速沿河道向下游的變化。流域中每一個網格單元的匯流時間得到后，將其看作隨機變量，進行統計分析后，得到匯流時間的頻率分佈? giuh 。 -
The use of time delays on these vehicles helps to eliminate transmission and motor damage by providing even and controlled acceleration. the delay is adjustable between 0 to 5 seconds and can be wired independently of other delays or alternatively these delays can be wired in cascade so that it is necessary for the first delay to switch on before the following commences timing etc. suppression is included in the delay circuit to prevent damage by voltage transients
延遲開關可以調整延遲時間0 ~ 5秒，並可連接數個延遲開關來逐步控制連續動作之時間（復數連接時，第一個開關要啟動接下來的開關才會跟著動作）避免電動車起動初期之電力脈沖，達到平順的起步動作，可預防電壓無端變動造成之電路故障 -
Global stability of a predator - prey model with indirect control and time delays
一個具有變時滯和間接控制的捕食模型的全局漸近穩定性 -
This paper is focused on estimating the domains of attraction of equilibrium points for hopfield neural networks with delays and stabilizing a class of time - delays neural networks via standard feedback control
本學位論文主要研究了時延hopfield神經網路平衡點吸引域估計以及通過標準反饋控制使一類時延神經網路穩定化。 -
Chapter 4 discusses how to stabilize a class of time - delays neural networks via standard feedback control ; this kind of neural networks provides a unified view of several well - known neural networks ( such as hopfield neural networks and cellular neural networks ) with discrete delays or distributed delays. a stability criterion is given by using the lyapunov method. all the results obtained in this chapter are stated in simple algebraic forms so that their verifications and applications are straightforward and convenient
通過使用lyapunov方法，我們得到了一類時延神經網路經過標準反饋控制后的穩定條件，這類神經網路涵蓋了幾種著名的神經網路，如hopfield神經網路、細胞神經網路，同樣，本章所得到的結論也是簡單的代數表達式，使用非常方便，最後在用計算機通過做數值實驗對這些結論進行了驗證。 -
Some robust stability conditions are derived. ( 4 ) a class of dual - rate input - output predictive model containing time delays is established. a new dual - rate predictive control algorithm for the time - delay system is presented, which makes up the shortcoming of multi - rate weighted minimum - variance control for time - delays system, and has solved the influence of time delays on the multi - rate system
針對輸入更新速率比輸出采樣速率慢的雙速率采樣系統，建立了帶有時滯的輸入輸出預測模型，給出了時滯雙速率采樣預測控制演算法，彌補了已有文獻中時滯多速率采樣加權最小方差控制的不足，解決了時滯對多速率采樣系統帶來的影響 -
A detailed study is made in this dissertation on the applicability of the classical perturbation methods to the dynamical systems with time delays, and on the global view of local bifurcations and the complex dynamical behaviors of several duffing systems under different delayed state feedback control
本文詳細研究經典攝動法直接應用於時滯動力系統時的有效性及適用性問題，用不同方法系統分析了時滯狀態反饋下的duffing系統關于時滯的大范圍分叉模式和復雜動力學行為。 -
To date, no direct experimental measurements of these separate time delays have been published.
迄今為止，還沒有發表過對這些單獨時滯進行直接試驗測定的數據。 -
Theses systems, featuring with transcendental characteristic equations and infinite - dimensional solution spaces, may lose stability due to the time delays inherited in systems
這兩類系統具有超越特徵方程和無窮維解空間，常見于工業工程和生物生態領域。 -
Through such a study, it is also shown that when the time delay is long enough such that the stability switches of the equilibrium of system halt, the bifurcation branches originated from the critical time delays cannot be surely stable or unstable in the whole solution space, that is, their stability depends on cases. this phenomenon also implies that the stability of the periodic solutions on the bifurcation diagrams indicates only the stability on the local center manifo ld. some distinguished features of delay dyn
利用打靶法的數值結果說明了當系統平衡點不再發生穩定性切換時，源自這些臨界時滯處的解支的穩定性在整個解空間的穩定性具有不可判定性，這也說明由多尺度法所得高階近似判定的解支的穩定性事實上只表示解支在局部中心流形上的穩定性，而非在整個解空間中的穩定性。 -
The problem of designing sliding mode controllers for a class of linear systems with time delays was concerned
摘要研究了一類線性時滯系統的變結構控制器的設計問題。 -
The original system with both input and state time delays was first rewritten into a form without any time delays by a nonsingular linear transformation
為了簡化變結構控制器的設計，首先通過非奇異線性變換將含狀態時滯和輸入時滯的線性系統化為無時滯系統。 -
Robust absolute stability analysis of interval lurie systems with time delays
系統的魯棒絕對穩定性分析 -
The limited - jerk control commands are designed by fixing on a jerk maximum to limit the varying ratio of the reference orders, then the optimal time delays are solved by minimizing the oscillation energy of flexible modes
通過確定最大沖擊值，對指令信號的時間變化率加以限制來設計有限沖擊控制指令，然後令柔性模態振蕩能量最小，計算濾波器的最優時滯。 -
Wave variable method based on passivity can ensure teleoperation stability with arbitrary time delays and has become an important method for teleoperation system controller design
基於無源性理論的波變量法可以保證遙操作系統在任意時延下穩定，已成為遙操作控制系統設計的一個重要方法。
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