COBEM99

S9 Fenômenos Não-Lineares e Caóticos em Engenharia

Title:

ON THE DYNAMICS OF AN ARMATURE CONTROLLED DC MOTOR MOUNTED ON AN ELASTICALLY SUPPORTED TABLE

Summary :

ABSTRACT. THIS PAPER PRESENTS SOME ANALYSIS ON THE DYNAMICS OF AN UNBALANCED DIRECT CURRENT MOTOR MOUNTED ON AN ELASTICALLY SUPPORTED TABLE THROUGH NUMERICAL SIMULATIONS. THE GOVERNING EQUATIONS OF MOTION ARE OBTAINED FROM THE LAGRANGE S EQUATIONS. WE CONSIDER THAT A NON-IDEAL ENERGY SOURCE SUPPLIES THE ENERGY TO THE SYSTEM, AND ANALYZE THE INTERACTIONS BETWEEN DYNAMICS OF THE FOUNDATION AND DYNAMICS OF THE MOTOR. SEVERAL AUTHORS, AS ONE MAY SEE IN THE PAPER, WORKED WITH NON-IDEAL PROBLEMS AND, PARTICULARLY, WITH UNBALANCED MOTORS MOUNTED ON ELASTIC FOUNDATIONS. HOWEVER, THE WORKS PRESENTED UP UNTIL NOW IN THE LITERATURE DON T TAKE INTO ACCOUNT THE "NATURE OF THE REGULATION" OF THE MOTOR, BUT ONLY EXPERIMENTAL CURVES FOR THE DRIVING AND RESISTING TORQUE. IN THIS WORK WE CONSIDER THE "NATURE OF THE REGULATION" OF THE MOTOR. HENCE THE PROBLEM HAS ONE MORE DEGREE OF FREEDOM THAN THE KNOWN WORKS. IN THIS WAY IT S POSSIBLE TO TAKE DIRECTLY INTO ACCOUNT SEVERAL PARAMETERS INTRINSICALLY RELATED TO THE CONSTRUCTION OF THE MOTOR, NOT ONLY THE CHARACTERISTICS OF THE FOUNDATION. KEYWORDS: NON-IDEAL SYSTEMS, NONLINEAR SYSTEMS, SOMMERFELD EFFECT, NONLINEAR VIBRATIONS

Author :

Balthazar, Jose Manoel
Mattos, Marcio Coelho de

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