Laser leveling system control method based on fuzzy control

Abstract

The invention discloses a laser leveling system control method based on fuzzy control and aims to realize relatively precise forklift control. According to the method, a dual-input single-output fuzzy controller is employed, a displacement deviation value and a forklift load are taken as input variables of the fuzzy controller, and the electrification time of a solenoid valve is taken as an output control variable. For more precise control on forklift lifting height, height difference is divided into 7 areas, the forklift load capacity is divided into 5 grades, and the corresponding electrification time is respectively outputted according to leveling blades. Through the method, precise and reasonable control on the leveling blade is realized, problems of imprecise control and duty ratio adjustment limits existing in a traditional control mode are solved, problems of soil removal incapability of a tractor caused by long-term full load of the leveling blade and service life loss of the tractor and the leveling blade can be solved, cost is saved, and soil flattening efficiency is improved. The method is advantaged in that the method is suitable for different hydraulic systems and leveling blades, and certain universality is realized.

Description

technical field [0001] The invention relates to a laser land leveling method based on fuzzy control, which is suitable for fine land leveling, automatic control and other fields. Background technique [0002] The fine leveling of farmland can increase the effective arable land area, facilitate mechanized farming, improve agricultural production conditions, improve the uniformity of farmland irrigation, improve the distribution of soil water and salt, control weeds, and achieve the effect of saving water and increasing production. It is an important aspect of modern ground fine irrigation in my country. Base. [0003] Laser control leveling technology is currently the most widely used fine leveling technology in China. Compared with conventional land leveling, it can greatly improve the leveling accuracy of field land, and the system sensitivity is at least more accurate than manual hydraulic adjustment system of manual visual judgment and leveling machine operators. 10 to 50...

AI Technical Summary

Problems solved by technology

Due to the different hydraulic systems used by different leveling shovels, there is an automatic oil return type when rising and falling, and an oil feeding type when rising and falling. Some are equipped with horizontal bar hydraulic pressure, and some are equipped with double bar hydraulic pressure. The response time of different hydraulic systems is different. It is necessary to use different output duty ratios for control, so it is necessary to re-modify the program to adjust the duty ratio, which makes the operation very cumbersome, and at the same time, it cannot be leveled more accurately according to the current terrain conditions

[0005] In addition, continuous excavation often occurs during leveling operations, resulting in overloading, which causes the tractor engine to run overloaded and damages the life of the tractor.

If the forklift is still digging when it is almost fully loaded, it will cause overload to pull the soil, which will affect the efficiency of leveling

The current laser leveling system does not have a device for monitoring the load of the forklift, which causes the driver to frequently turn his head to monitor the soil movement of the leveling shovel, judge whether there is too much soil transported by human eyes, and then make adjustments to greatly increase the operation The workload of personnel will affect the work efficiency and even bring safety hazards to driving

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