| Abstract |
For many applications requiring articulated movements, e.g. robotics and tooling machines, actuators able to
directly manage multiple mechanical degrees-of-freedom are increasingly sought to simplify the overall
structure while improving performances and reducing the maintenance requirements. In this paper, the
structure and theoretical behavior of a recently introduced rotary-linear brushless machine are recalled,
illustrating the ideal possibility to achieve a decoupled ripple-less force/torque control with a linear
correlation to suitable components of the phase currents. The selection among different possible structures
of the supply converter is then addressed, highlighting the possibility to employ common inverter modules.
A complete drive structure for the control of axial position and rotational speed is finally proposed,
describing its Matlab-Simulink® simplified model and reporting simulation results that illustrate the
potentially interesting performances of the system under different operating conditions. |
