研究了Lagrange系统的Lie对称性摄动与新型的非Noether绝热不变量.列出了未受扰Lagrange系统的Lie对称性导致的Lutzky型精确不变量;基于力学系统的高阶绝热不变量的定义,研究在小扰动作用下Lagrange系统Lie对称性的摄动,得到了系统的一类Lutzky形式的绝热不变量.举例说明方法和结果的应用.
The perturbation of Lie symmetries and new non-Noether adiabatic invariants for the Lagrangian system are studied. The exact invariants of Lutzky type arising from the Lie symmetries of Lagrangian system without perturbation are given. Based on the definition of high-order adiabatic invariants of a mechanical system, the perturbation of Lie symmetries for Lagrangian system under the action of small disturbances is investigated, and a type of Lutzky adiabatic invariants of the system are obtained. An example is given to illustrate the application of the method and results.