Vector Speed Regulation of an Asynchronous Motor Based on Improved First-Order Linear Active Disturbance Rejection Technology

Abstract

Asynchronous motors are widely used in industry and agriculture because of their simple structure, low cost, and easy maintenance. However, due to the coupling and uncertain factors of the actual operation of the motor, a traditional controller cannot achieve a satisfactory control effect. A linear active disturbance rejection controller (LADRC), featuring good robustness and adaptability, was proposed to improve the control efficiency of a nonlinear, uncertain plant. A linear extended state observer (LESO) is the core part of a L. The accuracy of the observation of state variables and unknown disturbances is related to the control effect of the controller. The performance of a traditional LESO is not high enough, and thus an error differential is introduced by analyzing the principle of LESO to improve its observation performance. The improved LADRC applies to the vector speed control of the induction motor. Additionally, low-speed and high-speed no-load starting, sudden load, electromagnetic torque, and three-phase stator current of the induction motor was simulated using MATLAB (Developed by MathWorks in Natick, MA, USA, and dealt by MathWorks Software (Beijing) Co., Ltd. in Beijing, China). Theoretical analysis and simulation results show that the ADRC based on the improved linear expansion observer was better than the traditional linear ADRC in terms of the dynamic and static performance and robustness.

Modified ADRC for Inertial Stabilized Platform With Corrected Disturbance Compensation and Improved Speed Observer

“…Combining (14) with (46), we can get She is currently an Associate Research Fellow with the North Automatic Control Technology Institute, Taiyuan, China. Her research interests include automatic control technologies, cooperative control, and route planning.…”

“…For the The associate editor coordinating the review of this manuscript and approving it for publication was Xiaosong Hu . last decade, the superiority of ADRC has been demonstrated in fields of motion control of microelectromechanical gyroscopes [7], trajectory tracking control of flexible-joint robotic system [8], superconducting radio frequency cavities control [9], piezoelectric multimode vibrationcontrol [10], dc-dc power converter control [11], motion control of noncircular turning [12], the control for permanent magnet synchronous motor and asynchronous motor servo system [13], [14].…”

Voltage Stabilisation of a Drive System Including a Power Transformer and Asynchronous and Synchronous Motors of Susceptible Motion Transmission

“…Asynchronous drives are normally used to power-pumping systems that use susceptible motion transmissions to drive pump rotors. Asynchronous motors have a range of advantages over other electric motors, although they suffer from the fundamental drawback of consuming high magnetising currents that can reach values of several times the rated currents in transient processes [6][7][8]. Motors in pumping systems are supplied from power transformer secondary windings.…”

Model-Free Hybrid Control with Intelligent Proportional Integral and Super-Twisting Sliding Mode Control of PMSM Drives

“…A Linear Extended State Observer (LESO) was proposed in References [22,23], which originated from Linear Active Disturbance Rejection Control. The LESO has the advantages of simple structure and efficient estimation, so it has been studied and applied by many scholars [24][25][26][27].…”