历史查询   





 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。 
The purpose of this work is to propose a scheme to stabilize the predictive control systems in the practical stability sense.


On the conjunction practical stability and controllability of largescale impulsive control systems


We studied the conjunction practical stability and controllability of largescale impulsive control systems by using the comparison systems and vector Lyapunov functions.


Then the less conservative sufficient conditions for conjunction practical stability and controllability of largescale impulsive control system were obtained.


For a continuous approximation of the discontinuous control law,practical stability (essentially, global uniform ultimate boundedness) of the tracking error is proved.

 更多 
The purpose of this work is to propose a scheme to stabilize the predictive control systems in the practical stability sense.


On the conjunction practical stability and controllability of largescale impulsive control systems


We studied the conjunction practical stability and controllability of largescale impulsive control systems by using the comparison systems and vector Lyapunov functions.


Then the less conservative sufficient conditions for conjunction practical stability and controllability of largescale impulsive control system were obtained.


For a continuous approximation of the discontinuous control law,practical stability (essentially, global uniform ultimate boundedness) of the tracking error is proved.

 更多 


 Assuming the internal Aspin,B—spin and C—spin of leptons and quarks, from the hasic symmetry SU(2)×SU(2)_L×SU(2)_R of every degree of fre edom,we derive the color symmetry SU(3)、generation symmetry SU(3)′、 weak symmetry SU(2)_W and other higher composite symmetries of particles. The breakdown and locality of the composite symmetry are discussed briefly. The exotic particles of generation singlet are also predicted.An important prediction of the theory is the stability of protons.  假设轻子和夸克具有SO(4)对称性的A旋、B旋和C旋,由基本对称性SO(4)导出色对称性SU(3)、代对称性SU(3)和弱作用对称性SU(2)以及其他更高的复合对称性。讨论了复合对称性的破缺和局域化。文中也对世代单态的编外粒子作了预言。本文的一个重要结论是:质子实际是稳定的  In this paper Hill stability of the SunEarthMoon system is discussed numerically. The numerical results show, that the Moon is stable probably, and when the distance between the Moon and the Earth be enlarged to 1.85 times of actual distance, the Moon will escape within 160 years; and when the distance be enlarged to 1.9 times, the Moon will escape within 5 years. These results are quite different from those obtained theoretically. Hill curves in the general threebody problem show that the Moon is unstable,... In this paper Hill stability of the SunEarthMoon system is discussed numerically. The numerical results show, that the Moon is stable probably, and when the distance between the Moon and the Earth be enlarged to 1.85 times of actual distance, the Moon will escape within 160 years; and when the distance be enlarged to 1.9 times, the Moon will escape within 5 years. These results are quite different from those obtained theoretically. Hill curves in the general threebody problem show that the Moon is unstable, and for stability the maximum of the distance between the Moon and the Earth should be 0.046 times as long as actual distance. However, for triplets the stable limit given numerically is near that given theoretically.  从一般三体问题的运动区域能在理论上给出Hill稳定性标准。本文从数值上探讨了月球型一般三体问题的Hill稳定性。从数值结果中可以看到,对卫星型的一般三体问题,实际的稳定范围和理论上的结果相差很大。  In this paper Hill stability of the SunEarthMoon system is discussed numerically. The numerical results show, that the Moon is stable probably, and when the distance between the Moon and the Earth be enlarged to 1.85 times of actual distance, the Moon will escape within 160 years; and when the distance be enlarged to 1.9 times, the Moon will escape within 5 years. These results are quite different from those obtained theoretically. Hill curves in the general threebody problem show that the Moon is unstable,... In this paper Hill stability of the SunEarthMoon system is discussed numerically. The numerical results show, that the Moon is stable probably, and when the distance between the Moon and the Earth be enlarged to 1.85 times of actual distance, the Moon will escape within 160 years; and when the distance be enlarged to 1.9 times, the Moon will escape within 5 years. These results are quite different from those obtained theoretically. Hill curves in the general threebody problem show that the Moon is unstable, and for stability the maximum of the distance between the Moon and the Earth should be 0.046 times as long as actual distance. However, for triplets the stable limit given numerically is near that given theoretically.  从一般三体问题的运动区域能在理论上给出Hill稳定性标准。本文从数值上探讨了月球型一般三体问题的Hill稳定性。从数值结果中可以看到,对卫星型的一般三体问题,实际的稳定范围和理论上的结果相差很大。   << 更多相关文摘 
相关查询  


