Robustness of nonlinear, complex algorithms for controlling servo drives with permanent magnet motors to factors related to implementation in real systems

In the article, using the example of nonlinear adaptive control with the limitation of state variables in a finite time, the authors show the influence of factors considered as "deteriorating" the control on the accuracy of tracking a given trajectory. Based on an accurate model of a linear drive with a permanent magnet synchronous motor, the destructive effect of unmodulated additional dynamics and non-linearities in the control algorithm was analysed. The analysis of the obtained results made it possible to apply remedies and evaluate their effectiveness. The article presents simulations, and tests carried out on a real system