second law of dynamics 中文意思是什麼
second law of dynamics
解釋
動力學第二定律-
We get the math module according to the second law of newton and the foundation of the dynamics, analysis the force of the cart and pendulum, and adopt the concept of " the equivalent cart ". during writing the equitation of the system, the equitation has been processed by linear
利用牛頓第二定律及相關的動力學原理等建立數學模型，對小車和擺分別進行受力分析，並採用等效小車的概念，列舉狀態方程，進行線性化處理，最後通過極點配置，得到變量系數陣。 -
In the fields of fluid dynamics, entropy inequality reflects the second law of thermodynamics. i. e. entropy must increase across shock waves ( a kind of discontinuity ). all kind of approximate schemes should reflect the fact that it must satisfies some kind of discrete entropy inequality ). from the view of practical computation, stability and theo - retical error of any kind discrete schemes all dependend of the smoothness of the solution of ( 0. 2. 1 ). generally, the approximate solution have good stability and theoretial error in the area where the solutions have more regularity and poor stability and theoretial error in other area
從流體力學來看，它事實上是熱力學第二定理的反映，即熵越過激波（一種間斷）要增加。各種估計格式構造的估計解應反映這一事實，即滿足熵不等式。從實際計算來看，總是通過離散化求解，不考慮計算的積累誤差，它的穩定性與計算精度都依賴與真解的光滑性，一般說，在解較光滑的區域有較好的穩定性與計算精度，而在較粗糙的區域則相反。 -
This paper establishes the mathematic model according to the second law of newton and the foundation of the dynamics and analyses respective the force of cart and pendulum adopted the concept of " the equivalent cart " to linearization. the paper specialize the control ability of pendulum system using linear system theory and perform the control of the inverted pendulum applying state feedback theory through pole collocate
本文首先利用牛頓第二定律及相關的動力學原理建立二級倒立擺的數學模型，對小車和擺分別進行受力分析，並採用等效小車的概念進行線性化處理，並運用線性系統理論分析了這個系統的能控性，提出了應用狀態反饋理論，通過極點配置實現對倒立擺的控制。 -
Second law of dynamics
動力學第二定律 -
The second law of thermal dynamics claims entropy increase statistically. therefore, the law itself is true. on the other hand, entropy could decrease
即熱力學第二定律在大多數時候成立，在少數時候不成立？
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