Abstract
For the Permanent Magnet Synchronous Motor (PMSM) control system of the Mine Traction Electric Locomotive (MTEL), the fluctuation of the load will lead to the resonance of the velocity of the MTEL. In addition, the speed sensor is easy to be damaged due to the moisture, dust, and vibration. To solve the above problems, a disturbance observer-based (DOB) backstepping control of PMSM for the MTEL is proposed in this paper. First, a full-dimensional Luenberger observer for PMSM is designed and the asymptotically stability of the observer is proved. Next, through the designing of the virtual control input that includes the reconstruction disturbances and using backstepping control strategy, the DOB controller is proposed. The obtained controller can achieve high precision speed tracking and disturbance rejection. Finally, the effectiveness and feasibility of the designed system are verified by Matlab simulation and experiment results.
Highlights
With the development of power electronics technology and control technology, Permanent Magnet Synchronous Motor (PMSM) has been widely applied in various industrial sectors due to its compact size, high torque/inertia ratio, high torque/weight ratio, and absence of rotor loss [1]
Motivated by the discussions above, in this paper, we mainly investigate backstepping speed control for PMSM based on disturbance observer
A disturbance observer-based (DOB) backstepping speed tracking control method has been presented for the speed tracking control of PMSM for Mine Traction Electric Locomotive (MTEL)
Summary
With the development of power electronics technology and control technology, PMSM has been widely applied in various industrial sectors due to its compact size, high torque/inertia ratio, high torque/weight ratio, and absence of rotor loss [1]. To gain the information on rotor speed and position of the motor, a commonly used control strategy is to install an encoder or other kinds of sensors on the rotor shaft, but it would increase the system cost and reduce the system reliability. To enhance the system performance and reduce the adverse effects of sensors on the system, much attention has been given to achieve sensorless operation [3,4,5,6]. To obtain the rotor speed of the motor, a reduced-order linear Luenberger observer was proposed in [8]. A passive full-order observer was designed to estimate rotor speed. In order to improve the robustness and accuracy of position and speed estimations, the sliding-mode observers were widely used in very recent years. The chattering phenomenon in sliding-mode observer is the major drawback [9]
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