- Turkish Journal of Electrical Engineering and Computer Science
- Vol: 21 Issue: 5
- Antiwindup design for the speed loop PI controller of a PMSM servo system
Antiwindup design for the speed loop PI controller of a PMSM servo system
Authors : Ming Yang, Li Niu, Dianguo Xu
Pages : 1318-1327
Doi:10.3906/elk-1112-25
View : 4 | Download : 2
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :A novel antiwindup (AW) strategy for a proportional-integral (PI) regulator based on the back-calculation method is presented. The proposed method will calculate the gain of the back-calculation based on the input and output status of the PI regulator without the requirement of motor parameters, such as the inertial and torque-current coefficient, and the back-calculation gain will vary with the speed command in order to obtain the optimal dynamic performance. The proposed method avoids the problem caused by the fixed back-calculation gain in the classical AW strategy, and prevents the system from untimely saturation withdrawing or an unexpected overshoot due to the inappropriate back-calculation gain, respectively. The proposed AW strategy is compared with the classical AW design by simulation and experiment on an application platform of a permanent magnet synchronous motor servo system. A PI controller with the proposed AW design will decrease the overshoot with a small settling time of the system's step-response, which can be observed obviously in wide dynamic variation. It reduces the difficulty of the parameter tuning for the PI controller.Keywords : PMSM, antiwindup, integration saturation, PI controller