Independent speed and position control of two permanent magnet synchronous motors fed by a four-leg inverter

2014 ◽  
Author(s):  
Yuji Kubo ◽  
Takayuki Moroi ◽  
Matsuse Kouki ◽  
Hisao Kubota ◽  
Kaushik Rajashekara
Keyword(s):  
Permanent Magnet ◽  
Position Control ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors

scholarly journals Feedback Linearization Based Robust Control for Linear Permanent Magnet Synchronous Motors

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5242
Author(s):  
Yung-Te Chen ◽  
Chi-Shan Yu ◽  
Ping-Nan Chen
Keyword(s):  
Robust Control ◽  
Permanent Magnet ◽  
Feedback Linearization ◽  
Position Control ◽  
Feedback Controller ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Linear Motors ◽  
Highly Nonlinear ◽  
The Impact

In this study, we designed a feedback linearization control strategy for linear permanent magnet synchronous motors (LPMSMs) as well as a robust control mechanism. First, the highly nonlinear system was transformed into an exact linear system by the feedback linearization technique. Then, we designed a robust controller to mitigate the impact of system parameter disturbances on system performance. This novel robust feedback controller can be applied to electromagnetic force, speed and position control loops in linear motors, correct the errors created by uncertainty factors in the entire system in real time, and set the system’s settling time based on the application environment of the plant. Finally, we performed simulations and experiments using a PC-based motor control system, which demonstrated that the proposed robust feedback controller can achieve good performance in the controlled system with robust anti-disturbance control.

scholarly journals Nonlinear Optimal Position Control with Observer for Position Tracking of Surfaced Mounded Permanent Magnet Synchronous Motors

2021 ◽  
Vol 11 (22) ◽  
pp. 10992
Author(s):  
Dong Hyun Ha ◽  
Raeyoung Kim
Keyword(s):  
Permanent Magnet ◽  
Position Control ◽  
Control Method ◽  
Tracking Error ◽  
Nonlinear Observer ◽  
Position Tracking ◽  
Permanent Magnet Synchronous Motors ◽  
Optimal Position ◽  
Synchronous Motors ◽  
Cascade Structure

Previous control methods were designed based on cascade structure and consist of position and current controllers for permanent magnet-synchronous motors (PMSMs). Thus, the structures of the previous methods are necessarily complex although the stability is guaranteed. Thus, the gain tuning is difficult to obtain for the desired control performance for the PMSMs. To overcome this problem, this paper proposes a nonlinear optimal position control method with an observer to improve the position tracking performance of PMSMs. The proposed method consists of a desired state generator, controller, and nonlinear observer. The desired states and inputs are derived using the PMSM model. Then, the state feedback controller is designed based on the whole tracking error dynamics including both mechanical and electrical dynamics. The nonlinear observer is designed to estimate the velocity and load torque. The closed-loop stability is proven using the input-to-state stability. The proposed method is not designed based on the cascade structure. Furthermore, the control and observer gains are chosen using an optimal control method to obtain the desired performance for the PMSMs. This approach simplifies the design process such that the control algorithm is suitable for real-time control. The performance of the proposed method is validated via simulations and experiments.

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