A Dynamic Torque Control Method for Electric Drive Tracked Vehicle

Abstract

The invention relates to a dynamic torque control method of an electrically driven crawler vehicle, the method comprising: determining a driving mode according to a driving signal; controlling the output torque of a vehicle driving motor according to the driving mode; the driving signal includes a pedal opening signal and a Steering wheel angle signal; the driving mode includes a direct driving mode and a steering mode; the steering mode includes a driving steering mode and a braking steering mode; the control method is simple and effective, and the power cabin weight of the electric drive tracked vehicle that includes a coupling mechanism is utilized , size and vehicle driving ability advantages, with better real-time performance, feasibility, stability and reliability.

Description

technical field [0001] The invention relates to the technical field of vehicle drive, in particular to a dynamic torque control method of an electrically driven crawler vehicle. Background technique [0002] In order to curb environmental pollution and reduce carbon emissions, the research and development of new energy vehicles has been developed. Among them, electric drive tracked new energy vehicles are widely used in unmanned vehicles, engineering, emergency rescue, and military fields. [0003] Most of the existing electric-driven crawler new energy vehicles adopt double-sided independent electric drive. The power transmission system is divided into two sets of power transmission subsystems on the left and right sides. The output torque of the motor directly drives the driving wheel. The two power transmission subsystems are connected flexibly by cables. . With this structure, the mechanical system is simple in structure, convenient in arrangement, and easy to implement...

AI Technical Summary

Problems solved by technology

This kind of structure, the mechanical system structure is simple, the layout is convenient, and the control system is easy to realize, but this structure is limited by the driving capacity of the motor, so it is only suitable for light tracked vehicles

Medium-sized and heavy-duty tracked vehicles usually use an electric drive system including a coupling mechanism. The mechanical coupling device is used to transfer the regenerative power generated when the vehicle turns from the inner driving wheel to the outer driving wheel, reducing the demand for the driving capacity of the outer driving motor. The electric drive system including the coupling mechanism is complicated to control, and it is difficult to directly control the torque output to the driving wheel. Using the speed control method or the torque control method with complex algorithms, it is difficult to meet the requirements for real-time performance and stability, which limits the medium-sized Heavy-Duty Electric Drive Tracked Vehicle Applications

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