Torque monitoring method and system thereof for electric automobiles
A torque monitoring, electric vehicle technology, applied in electric vehicles, battery/fuel cell control devices, motors, etc., can solve problems such as vehicle runaway, and achieve the effect of preventing unreasonable, ensuring driving safety, and avoiding vehicle torque runaway.
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 This embodiment provides a torque monitoring method for an electric vehicle, comprising the following steps:
 First, the vehicle controller detects the vehicle manipulation signal and the vehicle state signal, and calculates the actual torque of the motor based on them. The vehicle manipulation signal is obtained according to the driver's driving intention, including braking signals, acceleration signals, and gear signals; The vehicle state signal is obtained according to the current driving state of the electric vehicle, including vehicle speed, motor speed, maximum traction torque of the motor and maximum power generation torque of the motor. State of charge, battery temperature, motor temperature, motor controller temperature and accessory power are calculated. Then, according to the difference between the calculated actual torque and the motor monitoring torque, it is judged whether there is a fault in the vehicle control system. If there is a fault, a fault...
 This embodiment provides a torque monitoring system for an electric vehicle, which is used to implement the above torque monitoring method, including:
 The actual torque calculation unit is used to detect the vehicle manipulation signal and the vehicle state signal, and calculate the actual torque of the motor according to them. The actual torque calculation unit further includes: a torque analysis module for performing torque analysis processing on the current torque obtained by the vehicle controller according to the vehicle manipulation signal and the vehicle state signal to obtain the first torque; and for performing torque filtering processing on the first torque A torque filtering module for obtaining a smooth second torque; a torque arbitration module for performing torque arbitration on the second torque according to the maximum traction torque of the motor and the maximum power generation torque of the motor to obtain a third torque; for outputting the t...
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