time-varying vector 中文意思是什麼
time-varying vector
解釋
時變向量-
Based on the investigation with several voltage control methods, such as venturini method, instantaneous double - voltage synthesis method and space vector modulation method ( svm ), three new control strategies are put forward. firstly, a time - varying modulation coefficient svm method is proposed to improve mc ' s anti - disturbance performance under the asymmetry input voltage. secondly, a 5 - state switching strategy is presented for mc controlled by the svm method, which reduces the commutation number and switching losses remarkably
在分析了venturini控製法、瞬時雙電壓法、空間矢量法等電壓控制方法的基礎上，提出了在非對稱輸入條件下矩陣變換器空間矢量法的時變調制比改進控制策略，提高了變換器的抗干擾性能；對空間矢量法的開關策略進行了研究，提出了新型5狀態開關策略，在保證其他性能不受影響的條件下，減少了變換器的換流次數和開關損耗；提出了一種矩陣變換器單電壓合成的新方法，它不僅使得變換器的控制簡單，計算量減少，而且使得開關損耗達到最少。 -
In this paper, first we review the general methods of analysis of stability of large - scale systems, and in particular, we discuss scalar lyapunov approach and vector lyapunov approach by using linear time - varying system as example. then we present an introduction about partial decomposing approach of stability analysis by using linear time - varying system as an example. finally, in the main part of this paper, we consider the stability problem for linear, time - delay large - scale systems and nonlinear large - scale systems with strong coupling in single direction among subsystems
又以線性時變大系統為例介紹了大系統穩定性分析的部分分解法，最後在本文的核心部分，研究了子系統間具有單向強耦合（前段子系統對後段子系統影響較大，但後段子系統對前段子系統影響較小或沒有影響）的線性時滯大系統和非線性大系統的穩定性問題，分別提出了時滯大系統穩定性和非線性大系統穩定性的部分分解法。
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