Active Fault-tolerant Control of EPS Considering Sensor and Actuator Fault

Gao, Zhengang

doi:10.3901/jme.2018.22.103

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [14], Commault et al used the observer group to estimate the state of the system and detect system faults. In [15], Gao et al proposed an active fault-tolerant control method for electric power steering, aiming at the influence of sensor and actuator faults on EPS performance. Besides, ABBAS [16] used a group of sliding mode observers to detect and isolate the sensor fault, and estimated the sensor fault based on the residual value information.…”

Section: Introductionmentioning

confidence: 99%

Active Fault‐Tolerant Control Based on the Fault of Electromagnetic Hybrid Active Suspension

Kou

Gao

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

In order to improve the ride comfort and handling stability of the vehicle and realize the recovery of vibration energy, an electromagnetic linear hybrid suspension actuator composed of linear motor and solenoid valve shock absorber is proposed. At the same time, a fault diagnosis and fault-tolerant control strategy is designed to solve the system instability caused by the fault of electromagnetic hybrid active suspension. The 1/4 vehicle two-degree-of freedom suspension model, the linear motor mathematical model, and the solenoid valve shock absorber test model are established. In this paper, the fuzzy sliding mode controller is used as the controller and the unknown input observer is used to estimate the state of the suspension. According to the residual obtained from the unknown input observer and compared with the residual threshold, the suspension fault is determined. In the case of fault, the fuzzy sliding mode controller is used to compensate the force and realize the suspension fault-tolerant control. The performance of the suspension is simulated on random road and bumped road, respectively. The simulation results show that the fault-tolerant control effect of the three performance indexes of the suspension is good, and the ride comfort and safety of the suspension are improved. Finally, the bench test is carried out, and the test results show that in the fault-tolerant control state, the root mean square value of the sprung mass acceleration is reduced by 31.69% compared with the fault state and the dynamic performance of the suspension is improved.

show abstract

Section: Introductionmentioning

confidence: 99%