A control method and device for an electromechanical compound transmission system of a tracked vehicle

Abstract

The present invention provides a control method and device for an electromechanical compound transmission system of a crawler vehicle. Based on the current system state parameters of the vehicle and a pre-built demand power prediction model, the demand power value at each moment in the prediction time domain is obtained, and the output power of the engine is The optimal engine working curve and the minimum system cost under the current road surface type are constraints, and the power prediction model is solved to obtain the optimal output power of the engine and the optimal output power of the battery at each time in the prediction time domain. Among them, since the power prediction model is based on SOC It is pre-constructed for state variables, engine speed and generator torque as control variables, demand power as disturbance variables, SOC, battery output power and system total fuel consumption rate as output variables. Power prediction takes different road types into consideration The impact on the system cost and the engine output power are on the optimal engine working curve, and the fuel economy is improved on the basis of ensuring the working performance of the whole vehicle.

Description

technical field [0001] The invention relates to the technical field of control of an electromechanical compound transmission system of a crawler vehicle, and more specifically, relates to a control method and device for an electromechanical compound transmission system of a crawler vehicle. Background technique [0002] The electromechanical compound transmission system of tracked vehicles is a special hybrid vehicle. Different from traditional road wheeled vehicles, tracked vehicles are heavy and their driving conditions are complex and changeable. They may drive on good roads or on mountain roads, Driving under severe working conditions such as no road, therefore, the required power of the electromechanical compound transmission system of the tracked vehicle has strong randomness, and the calculation of the required power is relatively complicated. [0003] The structure of the electromechanical compound transmission system of a tracked vehicle is as follows: figure 1 As ...

AI Technical Summary

Problems solved by technology

[0004] The existing technology has low accuracy in calculating the required power of the electromechanical compound transmission system of the tracked vehicle, and cannot effectively coordinate the power distribution between the engine and the battery pack while meeting the power performance requirements of the vehicle, which in turn leads to low working performance of the vehicle

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