In recent years,with the popularity of electric vehicles,their after-sales quality has also attracted extensive attention.As the position sensor of the motor,the resolver plays a key role in controlling the motor drive.Although the resolver has the advantages of reliable structure,strong anti-interference ability,and adaptability to harsh environments,once it is damaged or the signal detection circuit fails,the vehicle will face a great risk of out of control torque.Therefore,this paper analyzes the failure mode of the resolver and its detection circuit and puts forward the corresponding design improvement scheme.
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维普
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