中国物理B ›› 2011, Vol. 20 ›› Issue (7): 70203-070203.doi: 10.1088/1674-1056/20/7/070203

• GENERAL • 上一篇    下一篇

The approximate conserved quantity of the weakly nonholonomic mechanical-electrical system

刘晓巍1, 李元成1, 夏丽莉2   

  1. (1)College of Physics Science and Technology, China University of Petroleum, Qingdao 266555, China; (2)Department of Physics, Henan Institute of Education, Zhengzhou 450014, China
  • 收稿日期:2010-11-20 修回日期:2011-03-24 出版日期:2011-07-15 发布日期:2011-07-15

The approximate conserved quantity of the weakly nonholonomic mechanical-electrical system

Liu Xiao-Wei(刘晓巍)a), Li Yuan-Cheng(李元成)a), and Xia Li-Li(夏丽莉)b)   

  1. a College of Physics Science and Technology, China University of Petroleum, Qingdao 266555, China; b Department of Physics, Henan Institute of Education, Zhengzhou 450014, China
  • Received:2010-11-20 Revised:2011-03-24 Online:2011-07-15 Published:2011-07-15

摘要: We study the approximate conserved quantity of the weakly nonholonomic mechanical-electrical system. By means of the Lagrange—Maxwell equation, the Noether equality of the weakly nonholonomic mechanical-electrical system is obtained. The multiple powers-series expansion of the parameter of the generators of infinitesimal transformations and the gauge function is put into a generalized Noether identity. Using the Noether theorem, we obtain an approximate conserved quantity. An example is provided to prove the existence of the approximate conserved quantity.

Abstract: We study the approximate conserved quantity of the weakly nonholonomic mechanical-electrical system. By means of the Lagrange—Maxwell equation, the Noether equality of the weakly nonholonomic mechanical-electrical system is obtained. The multiple powers-series expansion of the parameter of the generators of infinitesimal transformations and the gauge function is put into a generalized Noether identity. Using the Noether theorem, we obtain an approximate conserved quantity. An example is provided to prove the existence of the approximate conserved quantity.

Key words: weakly nonholonomic mechanical-electrical system, Noether theorem, approximate conserved quantity

中图分类号:  (Lie algebras of Lie groups)

  • 02.20.Sv
11.30.-j (Symmetry and conservation laws) 45.20.Jj (Lagrangian and Hamiltonian mechanics)