State-space control of the drive with pmsm and flexible coupling
- Elżbieta SZYCHTA, Mirosław LUFT
- Kategoria: Pozostałe zagadnienia
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 allowed to eliminate position sensor on motor side. The simulations confirm that proposed model based position control system can operate with moderate accuracy.
1. INTRODUCTION
To reduce number of sensors for position control of the drive with flexible coupling a control system based on state-space control and forced dynamics control completed with observation of state variables is developed. Main goal here is to verify overall position control algorithm together with correct function of two observers mutually interacted providing estimates of all the necessary state-space variables for control including of load torques on both sides of flexible coupling.
Control algorithm for state-space control of load position, θL of the drive with permanent magnet synchronous motor (PMSM) and flexible coupling is developed in two consequent steps.
First an inner motor speed control loop is formed using feedback linearisation principles, [1]. This control algorithm is formulated in the rotor flux fixed dq frame respecting mutual orthogonality of the stator current vector and rotor magnetic flux vector (...)
To reduce number of sensors for position control of the drive with flexible coupling a control system based on state-space control and forced dynamics control completed with observation of state variables is developed. Main goal here is to verify overall position control algorithm together with correct function of two observers mutually interacted providing estimates of all the necessary state-space variables for control including of load torques on both sides of flexible coupling.
Control algorithm for state-space control of load position, θL of the drive with permanent magnet synchronous motor (PMSM) and flexible coupling is developed in two consequent steps.
First an inner motor speed control loop is formed using feedback linearisation principles, [1]. This control algorithm is formulated in the rotor flux fixed dq frame respecting mutual orthogonality of the stator current vector and rotor magnetic flux vector (...)
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Źródło: Czasopismo Logistyka