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Harvester optimal operation parameter determination method based on local monitoring strain energy

A technology for determining operating parameters and methods, applied to measuring devices, instruments, and using ultrasonic/sonic/infrasonic waves, etc., can solve problems such as damage differences of harvesters, and achieve the effect of ensuring the quality of processing operations

Active Publication Date: 2022-04-29
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing methods for determining the optimal operating parameters of the harvester are still based on the experience of different regions, without considering the damage to the harvester in the same region will also cause certain differences

Method used

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  • Harvester optimal operation parameter determination method based on local monitoring strain energy
  • Harvester optimal operation parameter determination method based on local monitoring strain energy
  • Harvester optimal operation parameter determination method based on local monitoring strain energy

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Embodiment Construction

[0033] Such as figure 1 As shown, the method for determining the optimal operating parameters of the harvester based on local monitoring strain energy of the present embodiment includes the following steps:

[0034] S1. Real-time monitoring of local strain energy of harvester structure:

[0035] Import the 3D model of the working structure of the harvester into the finite element analysis software, use the automatic grid mode to mesh the 3D model of the working structure, apply the working load in the pre-processing module, and then solve the post-processing results to determine The maximum stress value of the operating structure and the structural area most prone to damage under actual working conditions.

[0036] On the structure of the harvester, mark the position area that is most prone to damage calculated according to the finite element software, and arrange 3 ultrasonic sensors in this position area. As long as a triangle is formed between these three sensors, the ultr...

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Abstract

The invention discloses a method for determining optimal operation parameters of a harvester based on local monitoring strain energy. The method comprises the following steps: S1, monitoring the local strain energy of a harvester structure in real time; s2, calculating a composite dimension stress factor in a grain and rice harvesting contact process; s3, determining a dimension sharpness factor distribution value in a full contact range; s4, calculating the distribution energy value of the sharpness factor of the full contact area; and S5, determining optimal operation parameters in the harvesting process. By monitoring local strain energy in real time, composite dimension stress factors in the contact process of the structure and rice are calculated in real time, dimension sharpness factor distribution values in a full contact range are established, and optimal shearing force in the harvesting process of the harvester is determined by integrating sharpness factor distribution energy and structure ultrasonic energy monitored in real time. The method is high in monitoring precision.

Description

technical field [0001] The invention relates to a method for determining mechanical parameters, in particular to a method for determining optimal operating parameters of a harvester based on local monitoring of strain energy. Background technique [0002] In recent years, the agricultural production process has continued to move towards modernization and intelligence. The status of intelligent harvesters in modern agricultural production has become increasingly prominent, and the demand for optimal operating conditions corresponding to the processing quality of agricultural products has become increasingly prominent. The existing methods for determining the optimal operating parameters of the harvester are still based on the experience of different regions, without considering the damage to the harvester in the same region will also cause certain differences. Therefore, it is necessary to quantitatively determine the optimal operating parameters of the harvester from the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B17/04
CPCG01B17/04
Inventor 朱林高璐璐董晓彤李鑫王鹏
Owner YANGZHOU UNIV