Linear active disturbance rejection control with torque compensation for electric load simulator

Liu, Haitao; Liu, Huarong; Shan, Xianlei

doi:10.1007/s43236-020-00168-7

Cited by 9 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the load simulator works periodically, iterative learning control (ILC) is applied to the electric load simulator. Niu et al designed an improved ILC with sinusoidal cycle iteration [13]. Experiments show that this method can effectively suppress the unwanted moment interference.…”

Section: Introductionmentioning

confidence: 99%

“…However, due to the problems of output lag and mechanical structure coupling of load simulator, it is difficult to establish an accurate mathematical model. Therefore, control methods such as [13][14][15], which only require system input and output data, are more suitable for solving the output accuracy problem of the load simulator, and the existing research mainly focuses on friction suppression, and the research on backlash interference in nonlinear interference is relatively small. How to reduce the influence of backlash interference on the output torque is also an urgent problem in the research of load simulators.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research on Control Method of Dual-Motor Load Simulator

Liu

2023

WEVJ

View full text Add to dashboard Cite

Aiming at the output torque error of a steering gear electric load simulator caused by excess torque and backlash interference, an electric load simulator based on double-motor loading is designed. The double-motor loading mode is adopted in the structure, the mathematical model is established, and the sources of excess torque and backlash interference are analyzed. In the control strategy, firstly, a torque controller is designed as a feedback controller based on the improved error symbol robust integral control method, and then a backlash interference compensator is designed as a feedforward controller based on the drive redundancy strategy. Finally, a dual motor speed synchronization controller is designed based on the improved cross coupling control method to ensure the stable operation of the torque controller and backlash compensator in the dual-motor system. The simulation results show that the compound control method can reduce the tracking error to 1.13%, 4.44% less than the PID control method. The tracking error is only 1.54% in the case of redundant torque, backlash, and different parameters of dual motors. The method proposed in this paper can still output loading torque with high accuracy.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%