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Search Results: 1 - 10 of 308097 matches for " adiabatic invariant<br>相对运动 "
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Exact invariants and adiabatic invariants of dynamical system of relative motion
Exact invariants and adiabatic invariantsof dynamical system of relative motion

Chen Xiang-Wei,Wang Xin-Min,Wang Ming-Quan,
陈向炜
,王新民,王明泉

中国物理 B , 2004,
Abstract: Based on the theory of symmetries and conserved quantities, the exact invariants and adiabatic invariants of a dynamical system of relative motion are studied. The perturbation to symmetries for the dynamical system of relative motion under small excitation is discussed. The concept of high-order adiabatic invariant is presented, and the form of exact invariants and adiabatic invariants as well as the conditions for their existence are given. Then the corresponding inverse problem is studied.
Lagrange symmetry for a dynamical system of relative motion
相对运动动力学系统的Lagrange对称性

Mei Feng-Xiang,Wu Hui-Bin,
梅凤翔
,吴惠彬

物理学报 , 2009,
Abstract: This paper studies the Lagrange symmetry of a dynamical system of relative motion. The definition and the criterion of the symmetry of the system are established. The condition under which there exists a conserved quantity and the form of the conserved quantity are obtained.
关于相对运动时钟的相对性和绝对性
郑容官
重庆邮电大学学报(自然科学版) , 2000,
Abstract: 巧妙地利用狭义相对论中的同时相对性的结论,对相对运动时钟的相对性和绝对性进行分析,从而进一步说明了同时性的相对性这一结论具有普遍的意义。
多狗追击问题的力学解法
袁庆新
力学与实践 , 2010, DOI: 10.6052/1000-0992-2008-364
Abstract: 对于多狗依次追击问题,运用相对运动的思想,可方便地求出追击的时间、路程及相对运动方程.
Numerical simulation on traffic flow with the consideration of relative velocity
考虑车辆相对运动速度的交通流演化过程的数值模拟

Xue Yu,Dong Li-Yun,Yuan Yi-Wu,Dai Shi-Qiang,
薛郁
,董力耘,袁以武,戴世强

物理学报 , 2002,
Abstract: The optimal velocity model of traffic is extended by taking into account the relative velocity. We derive the stability condition and stimulate the evolution of traffic flow with a small perturbation.We have found that the relative velocity can stabilize traffic flow and decrease the number of jamming phases.
Mei conserved quantity deduced from Mei symmetry of Appell equation in a dynamical system of relative motion
相对运动动力学系统Appell方程Mei对称性导致的Mei守恒量

Jia Li-Qun,Xie Yin-Li,Luo Shao-Kai,
贾利群
,解银丽,罗绍凯

物理学报 , 2011,
Abstract: Mei symmetry and Mei conserved quantity deduced directly from Mei symmetry for Appell equations in a dynamical system of the relative motion are investigated. The definition and the criterion of Mei symmetry of Appell equations in a dynamical system of the relative motion under the infinitesimal transformations of groups are given. The expressions of the determining equation of Mei symmetry of Appell equations and Mei conserved quantity deduced directly from Mei symmetry in a dynamical system of the relative motion are gained. An example is given to illustrate the application of the results.
Lie symmetry and Hojman conserved quantity of Nielsen equation in a dynamical system of the relative motion
相对运动动力学系统Nielsen方程的Lie对称性与Hojman守恒量

Xie Yin-Li,Jia Li-Qun,Yang Xin-Fang,
解银丽
,贾利群,杨新芳

物理学报 , 2011,
Abstract: Lie symmetry and Hojman conserved quantity for Nielsen equations in a dynamical system of the relative motion are investigated. The definition and the criterion of Lie symmetry of Nielsen equations in a dynamical system of the relative motion under the infinitesimal transformations of groups are given. The expressions of the determining equation of Lie symmetry of Nielsen equations and Hojman conserved quantity deduced directly from Lie symmetry in a dynamical system of the relative motion are obtained. An example is given to illustrate the application of the results.
Formation Control of Mobile Robots with Active Obstacle Avoidance
移动机器人的队形控制及其主动避障

LIU Shi-Cai,TAN Da-Long,LIU Guang-Jun,
刘士才
,谈大龙,刘光军

自动化学报 , 2007,
Abstract: In this paper,the formation control and obstacle avoidance problems are dealt with a unified control algorithm,which allows the follower to avoid obstacle while maintaining desired relative bearing or relative distance from the leader.In the known leader-follower robot formation control literature,absolute motion states of the leader robot are required to control the followers, which may not be available in some environments.In this research,the leader-follower robot formation is modelled and controlled in terms of the relative motion states between the leader and follower robots.The absolute motion states of the leader robot are not required in the proposed formation controller.Furthermore,the research has been extended to a novel obstacle avoidance scheme based on sensing the relative motion between robot and obstacle.Experimental investigation has been conducted using the platform consisted of three nonholonomic mobile robots and computer vision system,and the results have demonstrated the effectiveness of the proposed methods.
ANALYSIS OF RELATIVE CRUSTAL MOVEMENT BETWEEN BOTH SHORES OF TAIWAN STRAIT
台湾海峡两岸地壳相对运动分析

Li Zuning,Liu Xuyan,Wu Shaozu,Chen Guang,
李祖宁
,刘序俨,吴绍祖,陈 光

大地测量与地球动力学 , 2007,
Abstract: On the basis of the data of Fujian GPS stations, TAIW and TWTF key observation stations during 1995 to 2003,the variations and relative variations of the lengths between Fujian GPS stations and TAIW and TWTF stations are calculated, in the meantime,strain tensors of TAIW and TWTF stations are also calculated with genetic algorithm. The results show that the crustal relative movement of Taiwan strait is in the tensile state during both the periods of 1995 to 1997 and 2001 to 2003, but the magnitude and the direction of principal strain in the two periods are with a wide variation that may reflect the process of strain energy from accumulation to release before and after the M7.6 Chi-Chi earthquake in 1999.
The forms of three-order Lagrangian equation in relative motion
Ma Shan-Jun,Liu Ming-Ping,Huang Pei-Tian,
马善钧
,刘明萍,黄沛天

中国物理 B , 2005,
Abstract: In this paper, the general expressions of three-order Lagrangian equations in a motional coordinate system are obtained. In coordinate systems with some specific forms of motion, the expressions corresponding to these equations are also presented.
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