Abstract
The bearingless induction motor (BIM) system has the characteristics of non-linear, strongly coupled, and highly accurate. To achieve the stable and accurate control of BIM, the methods of direct torque control (DTC) and direct suspension force control (DSFC) based on space vector modulation (SVM) are introduced first. However, the dynamic performance and uncertain anti-jamming robustness of the system need to be further researched. Based on the BIM control system, the active disturbance rejection control (ADRC) technology is selected in this paper. The total disturbance of the system is estimated in real time by using the extended state observer (ESO). According to the estimated value of the ESO, the disturbance can be compensated by the ADRC in time to eliminate the steady-state tracking error to achieve good anti-interference performance. The ADRC-based direct torque and suspension force control system for the BIM is designed and simulated by the MATLAB software. The simulation and experiment results show that the ADRC technology can effectively suppress the impact of load disturbance, reduce the overshoot, and have strong robustness.
Highlights
With the advancement of technology and the requirement of modern industrial production, the performance requirements of high-speed, ultra-high-speed and high-power electric drive systems are receiving more and more attention [1]–[3]
The results show that the strategy can effectively improve the control performance of Bearingless induction motor (BIM)
To express the multi-variable, non-linear and strong coupling characteristics of the BIM, the direct torque control (DTC) and direct suspension force control (DSFC) system based on active disturbance rejection control (ADRC) is designed in this paper
Summary
With the advancement of technology and the requirement of modern industrial production, the performance requirements of high-speed, ultra-high-speed and high-power electric drive systems are receiving more and more attention [1]–[3]. Bearingless induction motor (BIM) has the characteristics of simple structure, high mechanical strength and low cost K. Li et al.: Direct Torque and Suspension Force Control for BIM and ultra-high-speed operation, which has wide application prospects [11]. Based on the idea of SVM-DTC, a novel direct suspension force control (DSFC) algorithm for BIM is put forward. The parameters need to be re-adjusted, that is, the adaptability is not strong It is difficult for the PID controller to meet the needs of high speed and high precision of BIM. The ADRC controller is applied to the direct torque and suspension force control system.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
