Adjusting method of fuzzy self-adaptive adjusting system of crushing thickness of straw returning machine

Abstract

The invention discloses an adjusting method of a fuzzy self-adaptive adjusting system of crushing thickness of a straw returning machine. The adjusting system comprises a torque detection module, a rotation speed detection module, a vehicle speed measurement module, a hydraulic execution module, a hydraulic pressure detection module, a suspension lifting hydraulic control module and a power module. The adjusting method comprises the following steps that the suspension lifting hydraulic control module calculates a control signal by adopting a fuzzy self-adaptive control algorithm according to load information and main cutter shaft rotation speed information, and the control signal is output to the hydraulic execution module. According to the adjusting system, the crushing thickness is set in an optimal range, and meanwhile, the crushing thickness of the straw returning machine is adjusted in real time through a fuzzy self-adaptive controller, so that the crushing quality of straw can beensured, meanwhile, the stress of connecting parts such as universal joints can be ensured to be within a stress range, and therefore maintenance is reduced.

Description

technical field [0001] The invention relates to the field of intelligent control of agricultural machinery, in particular to an adjustment method of a fuzzy self-adaptive adjustment system for crushing thickness of a straw returning machine. Background technique [0002] During tractor-hung operation, the ideal operating state of the straw returning machine is that the turning radius of the knife tip of the returning knife is just tangent to the ground, which can not only completely contact the straw to achieve the best crushing effect but also avoid contact with the ground to cause load Increase, energy waste and even damage to machine parts. However, the crushing thickness of the straw returning machine is generally adjusted manually, and the artificial adjustment has great uncertainty. If the height is too high, the crushing of the straw will be incomplete, and a large number of long stalks will be produced, making it impossible to continue the operation. Cause the blade...

AI Technical Summary

Problems solved by technology

However, the crushing thickness of the straw returning machine is generally adjusted manually, and the artificial adjustment has great uncertainty. If the height is too high, the crushing of the straw will be incomplete, and a large number of long stalks will be produced, making it impossible to continue the operation. Cause the blade to sink into the soil, seriously increase the operating load, and to a certain extent, cause damage to the connecting parts

Due to the general unevenness of the working land, it is difficult for the operator to adjust the height of the straw returning machine in real time while the tractor is moving to ensure uniform crushing.

Especially when the crushing thickness is artificially determined, it is impossible to accurately obtain the load torque of the straw returning machine. In addition, the operation conditions of the land are complex, and the universal joint and other rear drive connection parts will always bear torque beyond the stress range, resulting in Damage occurs, seriously affecting operation safety and efficiency

[0003] The Chinese patent with the application number 201480044132.2 discloses the "posture control device for working machines", which has a complex mechanical structure, and the addition of various hydraulic valves makes it difficult to realize the control. Due to the hysteresis of the hydraulic control itself, the machine works at a higher speed Under the circumstances, it is difficult to ensure the control operation effect

It has the following problems: On the one hand, it only considers the operation depth control, and does not consider the influence of other factors, such as: due to the unevenness of the field ground, there will be strong vibrations, and when the tractor is operating, all kinds of working parts are generally in a high-strength state , Poor stability, coupled with the complex conditions of the soil where the machine works, such as various uncertainties in soil debris, humidity, etc., these will form various uncertainties and disturbances to the work, affecting the control effect; On the other hand, the matching between the output power of the tractor and the load capacity of the work tool is not considered, which may easily lead to damage to the power connection parts between the tractor and the work tool

[0004] In addition, the above scheme does not consider the particularity of the operation of the straw returning machine. It is necessary to always pay attention to the thickness of the straw and adjust the height of the machine in time. There are no patents or related technologies related to the adaptive adjustment of the straw returning machine.

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