,Unified symmetry of mechano-electrical systems with nonholonomic constraints

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The unified symmetry of mechano-electrical systems with nonholonomic constraints are studied in this paper,the definition and the criterion of unified symmetry of mechano-electrical systems with nonholonomic constraints are derived from the Lagrange-Maxwell equations.The Noether conserved quantity,Hojman conserved quantity and Mei conserved quantity are then deduced from the unified symmetry.An example is given to illustrate the application of the results.
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