Metodologia de sistema de controle para uma suspensão veicular com magneto reologico (MR) para um pulverizador do tipo torre

Abstract

This paper presents the analysis of the dynamics of instability and chaotic responses of a structure equipped with a vehicle suspension that uses a fluid with magneto rheological characteristics. It is a spray orchards of tower type, with an unbalanced electric motor located at the top of the tower representing the concentrated mass of their fans. Some considerations are employed in order to obtain a theoretical mathematical model, based on the Lagrange Equation, which represents the real system the best way possible. To control the possible instability and chaotic motion of the primary system is studied a system of semi-active control equipped with a vehicle suspension with Magneto Rheological (MR), by an appropriate mathematical model. To analyze the dynamic response of the theoretical system of the sprayer tower, also some tools of nonlinear dynamics such as resonance curves and Series Time Domain. The simulations show that the MR suspension reduce the amplitude of oscillations of all the masses of the system, being the most important the mass of the cart and fans. The influence of the non- ideal motor is important to check the influence of a possible imbalance of fans.