Power matching control method and system of hybrid power bulldozer

Abstract

The invention discloses a power matching control method and system of a hybrid power bulldozer. The disclosed method comprises the following steps: 11) storing a relational expression between the rotating speed of an output shaft of a motor and the theoretical running speed of a track in advance; 12) detecting the rotating speed of the output shaft of the motor and the actual running speed of the track in real time, and obtaining the theoretical running speed of the track according to the rotating speed of the output shaft of the motor and the pre-stored relational expression; 13) comparing the theoretical running speed with the actual running speed of the track, and when the theoretical running speed is higher than the actual running speed of the track, increasing the locomotor activity of the bulldozer. According to the control method and system, timely judgment can be carried out according to the running speed of the track when the bulldozer slips or stops due to overload, and the driving ability of the bulldozer can be correspondingly adjusted, so that the power of the bulldozer is matched with the requirement of the driving speed; and the overload slippery phenomenon disappears rapidly, thereby keeping the driving speed of the bulldozer and guaranteeing the work efficiency.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a power matching control method and system for a hybrid bulldozer. Background technique [0002] The energy transmission of the hybrid bulldozer is mainly the mutual conversion of mechanical energy and electrical energy, which can be found in figure 1 , figure 1 Structural block diagram of the power transmission sequence for a hybrid bulldozer. The power transmission line is: engine 11-generator 12-motor 13-final drive 14-crawler belt 15, that is, the conversion and transmission of mechanical energy-electrical energy-mechanical energy-mechanical energy. The final drive is generally composed of a travel motor and a reduction mechanism. The travel motor can be a plunger motor to convert hydraulic energy into rotational kinetic energy. The reduction mechanism can be a two-stage gear reduction mechanism. [0003] In the power transmission line of the above-mentioned ...

AI Technical Summary

Problems solved by technology

However, this adjustment strategy has a big disadvantage

This kind of adjustment mainly depends on the operator's proficiency. If you are inexperienced, it is easy to adjust improperly, which not only affects the efficiency, but also increases the manipulation strength; moreover, even for experienced operators, the efficiency of adjusting the load power matching is very limited.

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