Method and device for monitoring torque of power system

Abstract

The invention discloses a method and device for monitoring torque of a power system. The method comprises the following steps that according to some automobile driving state relevant parameter data, the required torque and the threshold torque are calculated and obtained through a first algorithm and a second algorithm respectively, magnitudes of the required torque and the threshold torque are judged, one of the required torque and the threshold torque is selected to be determined as the target torque according to the judgment result, wherein the target torque is not greater than the threshold torque; and the target torque is sent to an actuator so as to control the actuator. As seen, after the required torque is obtained, whether the required torque exceeds the threshold torque or not isjudged in advance, then the determined target torque is not greater than the threshold torque, so that the problem when the required torque exceeds the threshold torque, the required torque is directly sent to the actuator, then the situation of automobile unanticipated acceleration caused by the fact that the actual torque output by the actuator exceeds the threshold torque is brought, and the mode of interrupting power output is adopted so as to terminate the situation is effectively solved, the vehicle running risk is effectively reduced, and the driving experience is improved.

Description

technical field [0001] The invention relates to the technical field of automotive system functional safety control, in particular to a method and device for torque monitoring of a power system. Background technique [0002] In the control system of a car, information such as vehicle status is usually collected, and a demand torque is obtained through comprehensive analysis based on the driver's driving intention. [0003] In the case that the actuator performs according to the required torque, the safety of the vehicle needs to be considered. In the prior art, after the vehicle controller obtains the required torque according to calculation, it directly sends the required torque to the actuator, that is, the input of the actuator is the required torque. In order to drive safely, the vehicle controller needs to feedback the actuator The actual torque is monitored. When the actual torque is monitored to be greater than the maximum torque threshold, it proves that the vehicle ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method and device for monitoring the torque of the power system, which solves the problem of lagging behind when the actual torque exceeds the threshold, further improves the safety performance of the vehicle, and reduces the simple and rude interruption of power output to a certain extent , enhance the driving experience

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