Design and Analysis of Motor Control System for Drilling Fluid Continuous Wave Generator Based on Improved Active Disturbance Rejection Control and Hysteresis Current Control

摘要

Large load torque acting on the output of the motor and the internal parameters changing with the surrounding environment will lead to low control precision and drilling fluid continuous wave signal which is unable to meet the requirements. Therefore, it is necessary to design a motor position tracking control system with strong robustness. In this paper, the load torque acting on the output of the motor is firstly analyzed and its alternating characteristic is pointed out. With theoretical model and simulation, the continuous wave generator control system with the speed-current double loop is designed based on the load torque characteristic and verified. In the control system, improved active disturbance rejection controller is used as the controller in the speed loop and the hysteresis current controller is applied as the controller in the current loop. The simulation result shows that the designed motor control system has a very small overshoot and a fast response speed and speed tracking and position tracking control can be achieved.