Torque monitoring system of electric vehicle

Abstract

The invention provides a torque monitoring system of an electric vehicle. The torque monitoring system comprises an information acquisition module, a simulation torque generation module, a judgment module and a fault diagnosis module. The information acquisition module is used for acquiring vehicle control signals, vehicle state signals and motor torque from a torque request system. The simulation torque generation module is used for generating simulation motor torque according to the vehicle control signals and the vehicle state signals. The judgment module is used for comparing the difference value between the motor torque and the simulation motor torque, determining abnormity of the torque request system when the difference value is larger than a predetermined threshold value, and generating a fault signal. The fault diagnosis module receives the fault signal, then determines the fault type of the torque request system according to the fault signal and adjusts the motor torque. According to the embodiment of the torque monitoring system of the electric vehicle, the motor torque which is possibly wrong due to calculation, affected by the hardware problem, the software problem, the electromagnetic interference, the human errors and the like of the torque request system, of a vehicle controller can be effectively detected and controlled, the torque of the vehicle is prevented from getting out of control, and the driving safety is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a torque monitoring system of an electric automobile. Background technique [0002] With the rapid development of the global economy, energy and environmental protection issues have become increasingly prominent, and countries around the world are facing major challenges such as energy security, climate change, and urban air pollution. In recent years, countries all over the world are calling for the adoption of low-carbon economic policies, which promote the development of new energy vehicles. The technological progress, application and industrialization of new energy vehicles will drive the development of upstream and downstream industries and bring fundamental benefits to energy and the environment. change. As a zero-emission new energy vehicle technology-electric vehicle technology has become one of the focuses of governments, enterprises and scientific rese...

AI Technical Summary

Problems solved by technology

[0004] Electric vehicles are driven by electric motors. The electric motor and the engine have completely different torque characteristic curves. In some special cases, it may be due to hardware problems, software problems, electromagnetic interference, and human errors in the torque request system of the vehicle controller. The situation that causes the vehicle torque to be out of control, which will bring great safety hazards to the driving of the vehicle

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