A torque safety monitoring method and device

Abstract

The embodiment of the invention discloses a torque safety monitoring method used for preventing torque from being out of control. The method comprises the steps that when torque output driving is conducted, an anti-shake torque value is obtained from a torque compensation value according to a first preset cycle, and the torque compensation value is obtained by conducting outputting according to a second preset cycle; an integral value of the anti-shake torque value within a preset time in the first preset cycle is calculated according to a first preset rule; whether the integral value is larger than a first preset threshold or not is judged; if the integral value is larger than the first preset threshold, torque compensation is shut down. The embodiment of the invention further provides a torque safety monitoring device which is used for monitoring a torque output after torque compensation in real time and improving the reliability of torque compensation.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a torque safety monitoring method and device. Background technique [0002] With the increasing energy crisis and environmental pollution, new energy vehicles, due to their excellent performance of zero emissions and high efficiency, can effectively reduce vehicle environmental pollution while alleviating the excessive consumption of petroleum resources by traffic. An important means of reducing stress and environmental pollution. [0003] As we all know, due to the tolerances and gaps between the transmission components of the pure electric vehicle powertrain, the transmission components between the motor output shaft and the wheels present a flexible connection, and after the reciprocating motion between the transmission components, it will be from the vehicle level. It shows the vibration of the vehicle, which will affect the driver's driving experience and acceler...

AI Technical Summary

Problems solved by technology

From the perspective of torque management, the vehicle controller in the pure electric vehicle power system can adjust the final driving demand of the driver according to the input signals such as the position of the accelerator pedal, the position of the brake pedal, the position of the shift lever, and the state of charge of the battery. It is transformed into a torque request to the motor. However, as the only power source of a pure electric vehicle, the motor has a torque characteristic curve that is completely different from that of the engine of a traditional gasoline vehicle. In some special cases or when the vehicle fails, the torque may be out of control. , this situation will bring a great safety hazard to the vehicle

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