中国物理B ›› 2006, Vol. 15 ›› Issue (8): 1669-1671.doi: 10.1088/1009-1963/15/8/004

• GENERAL • 上一篇    下一篇

An inverse problem in analytical dynamics

李广成, 梅凤翔   

  1. Department of Mechanics, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2005-12-30 修回日期:2005-02-16 出版日期:2006-08-20 发布日期:2006-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10272021, 10572021) and the Doctoral Programme Foundation of Institution of Higher Education of China (Grant No 20040007022).

An inverse problem in analytical dynamics

Li Guang-Cheng(李广成) and Mei-Feng-Xiang(梅凤翔)   

  1. Department of Mechanics, Beijing Institute of Technology, Beijing 100081, China
  • Received:2005-12-30 Revised:2005-02-16 Online:2006-08-20 Published:2006-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10272021, 10572021) and the Doctoral Programme Foundation of Institution of Higher Education of China (Grant No 20040007022).

摘要: This paper presents an inverse problem in analytical dynamics. The inverse problem is to construct the Lagrangian when the integrals of a system are given. Firstly, the differential equations are obtained by using the time derivative of the integrals. Secondly, the differential equations can be written in the Lagrange equations under certain conditions and the Lagrangian can be obtained. Finally, two examples are given to illustrate the application of the result.

Abstract: This paper presents an inverse problem in analytical dynamics. The inverse problem is to construct the Lagrangian when the integrals of a system are given. Firstly, the differential equations are obtained by using the time derivative of the integrals. Secondly, the differential equations can be written in the Lagrange equations under certain conditions and the Lagrangian can be obtained. Finally, two examples are given to illustrate the application of the result.

Key words: inverse problem, analytical dynamics, integral, Lagrangian

中图分类号:  (Inverse problems)

  • 02.30.Zz
45.20.Jj (Lagrangian and Hamiltonian mechanics) 02.30.Jr (Partial differential equations)