Integrated Fault Diagnosis Strategy for Electric Vehicle Motor Drive Sensing System
The traditional fault diagnosis scheme of sensor system in electric vehicle motor drive system needs extra hardware cost and installation space.An integrated fault diagnosis strategy of electric vehicle motor drive sensor system based on analytic redun-dancy is proposed without additional detection sensors.Combining advanced fault diagnosis of vehicle dynamics with low-level fault diagnosis of motor system,an integrated fault diagnosis strategy with strong robustness and stability is obtained.For ad-vanced fault diagnosis,the correlation between the diagnosed sensor and the vehicle dynamic residual is analyzed,and the effec-tiveness of the proposed strategy is verified by experimental analysis.For low-level fault diagnosis,the current sensor and position sensor are diagnosed by using parity equation.Finally,the combination of high-level and low-level fault diagnosis to achieve dual monitoring,fault factors are classified,and faults are distinguished by system performance analysis,which further enhanc-es the robustness and stability of the diagnosis strategy.
Electric VehicleMotor Drive Sensing SystemIntegrated Fault DiagnosisAnalytic Redundancy
NETL
NSTL
万方数据
