Limiting dynamic loads of electric drive with flexible couplings and variable inertia moment

This The paper addresses some issues of design of electric drives for mechanisms and machines with varied inertia, which are operating under severe dynamic conditions are noted. A logarithmic decrement has been taken as the most suitable limit of dynamical loads. The standard classification of electric drive designs upon criterion of mechanical impedance of the speed-torque characteristic of electric drives has been provided. It is shown that it is possible to get a marginal limitation of oscillations providing the greatest possible operational life of the machine. Missing or wrong information of a current inertia of the second mass compounds represents a problem for selection of an optimum adjustment of electric drive regulator. This paper studies different designs of electric drives to damp vibrations within the specified inertia range. The results of analysis of dynamic behavior of electric drives obtained with simulation have been provided. Recommendations for these electric drives have been elaborated. It is proven that intelligent control systems based on fuzzy controllers and artificial neuron network are most promising.