State - space control of the drive with PMSM and flexible coupling

J´an Vittek; Pavol Makyˇs; Milan Posp´ıˇsil; Elzbieta Szychta; Mirosław Luft

doi:10.2478/v10174-011-0006-9

Authors

J´an Vittek University of Zilina, Faculty of Electrical Engineering, SLOVAKIA; 010 26 Zilina; Univerzitna 1, 29 Author
Pavol Makyˇs University of Zilina, Faculty of Electrical Engineering, SLOVAKIA; 010 26 Zilina; Univerzitna 1, 29 Author
Milan Posp´ıˇsil University of Zilina, Faculty of Electrical Engineering, SLOVAKIA; 010 26 Zilina; Univerzitna 1, 29 Author
Elzbieta Szychta Technical University of Radom, Faculty of Transport and Electrical Engineering, POLAND; Radom 26-600; Malczewskiego 29 Author
Mirosław Luft Technical University of Radom, Faculty of Transport and Electrical Engineering, POLAND; Radom 26-600; Malczewskiego 29 Author

DOI:

https://doi.org/10.2478/v10174-011-0006-9

Keywords:

control systems, control vector algorithm, state-space control

Abstract

A control system, which achieves prescribed speed and position responses, for electric drives with a significant torsion vibration mode is presented. Control system design exploits state-space control and forced dynamics control principles. Derived control algorithm respects the vector control condition by keeping the direct axis current component approximately zero as well as controlling the load position with prescribed closed loop dynamics. Set of two observers, one on load side and the second one on motor side, generate all state variables necessary for control algorithm design including torques acting on the motor and load side to satisfy all conditions for achieving prescribed dynamics. This approach eliminates the position sensor on motor side. The simulations confirm that proposed model based position control system can operate with moderate accuracy.

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