Loader gearbox clutch engagement control method and system

A control method and clutch technology, applied in the direction of transmission control, mechanical equipment, components with teeth, etc., to avoid one-sidedness, improve the service life of the clutch, and achieve the effect of precise tracking

Active Publication Date: 2021-01-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the first object of the present invention is to provide a loader gearbox clutch engagement control method to solve the problem of smoothness and comfort of the gearbox power transmission during the shifting process of the loader during operation.

Method used

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  • Loader gearbox clutch engagement control method and system

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0039] The clutch control method is to control the oil pressure to control the transmission of torque during the clutch engagement process. The torque transmission can be understood as the engagement torque trajectory, and the clutch engagement control oil pressure changes with time. The control oil pressure can be understood as the engagement pressure trajectory. Due to the lack of consideration of the load characteristics and external random disturbances in the actual engagement process, as well as the uncertainty estimation of the engagement system and changes in clutch characteristics, the torque variation during the clutch engagement process exceeds the control range, causing large fluctuations in the transmitted torque, resulting in clutch engagement. Increased process jitter produces a sense of frustration, making precise control impossib...

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Abstract

The invention relates to a loader gearbox clutch engagement control method. The method comprises the following steps that the clutch request of a clutch is received, wherein the clutch request of theclutch is an engagement signal; according to the clutch request of the clutch, a preset evaluation model is adopted for conducting uncertainty and threshold value estimation on the clutch engagement process, and the optimal engagement torque track is obtained in combination with a control method; according to the optimal engagement torque track and the clutch friction characteristic, the optimal engagement pressure track of the clutch is obtained; and the proportional electromagnetic valve pressure output characteristic and the model uncertainty are considered, and the optimal engagement pressure track is accurately tracked through the method of combining self-adaptive control and sliding mode variable structure control.

Description

technical field [0001] The present invention relates to the technical field of earth-moving machinery transmission, and relates to a loader transmission clutch engagement control method and system thereof. Background technique [0002] As a common equipment in earthmoving machinery, loaders in earth-moving machinery are widely used in the construction of roads, railways, ports, buildings and mines. During the cycle operation, the loader shifts frequently, which has great influence on the speed change in the power transmission system. The box performance has higher requirements. With the increasingly fierce competition and intelligent upgrading of earthmoving machinery products, the market's requirements for the power transmission performance of loader gearboxes are gradually increasing. However, the information on research methods of foreign products has not been made public, and domestic related products are still in the stage of exploratory research. Facing the disturban...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/04
CPCF16H61/04F16H2061/0474
Inventor 李晓祥王安麟李晓田
Owner TONGJI UNIV
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