Application of Automatic Air Inflation Deflation Control System on a Manure Tanker to Prevent Excessive Soil Compaction

2015 ◽  
Keyword(s):  
Control System ◽  
Soil Compaction

Pressure Control Systems for Tyre Preservation in Forestry Machinery and Forest Soils

2021 ◽  
Vol 18 (3) ◽  
pp. 95-102
Author(s):  
Ol’ga Kunickaya ◽  
Edward Hertz ◽  
Igor Kruchinin ◽  
Evgeniy Tikhonov ◽  
Nikolai Ivanov ◽  
...  
Keyword(s):  
Control System ◽  
Soil Compaction ◽  
Humus Content ◽  
Pressure Control ◽  
Correct Choice ◽  
Negative Influence ◽  
Temperature Control System ◽  
Tyre Pressure ◽  
Study Results ◽  
Pressure Control System

Most forestry machinery today has a wheel-driven engine, and its tyre pressure has a significant impact on the compaction and degradation of the forest soil, causing environmental damages. Not only the durability of the tyres but also the driving characteristics and productivity of wheeled forest machines depend on the correct choice of pressure and competent operation. This work aims to analyse modern tyre pressure control technologies to develop an automated tyre pressure control system for wheeled forest machinery and lower the environmental impact. A new tyre pressure control system in forest machines was developed using a PressurePro solution, which contributes to a lower negative influence on the soil and reduces expenses for diagnostics and fuel. The study results of the tyre-to-ground contact pressure show that the installation of an automatic tyre pressure control system leads to its decrease by 20%. However, as the number of passes increases, the pressure might slightly increase. The study of humus content and soil compaction demonstrates that reduced tyre pressure and its automatic control contribute to a minimal reduction in humus content and soil compaction over time. Installation of the tyre pressure and temperature control system on forestry machines allows the system to be implemented quickly due to the simplicity of installation and operation.

scholarly journals Precise Active Seeding Downforce Control System Based on Fuzzy PID

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Baosheng Li ◽  
Yu Tan ◽  
Jian Chen ◽  
Xingxing Liu ◽  
Shenghui Yang
Keyword(s):  
Control System ◽  
Real Time ◽  
Soil Compaction ◽  
Force Sensor ◽  
Linear Motor ◽  
Fuzzy Pid ◽  
Passive System ◽  
Real Time Control ◽  
Crop Species ◽  
Time Control

Soil compaction is an important procedure of precision seeding operation. In this paper, a precise downforce control system based on fuzzy PID was proposed in order to improve the quality of the soil compaction and the accuracy of setting working parameters. The conventional mechanism of seeders for soil compaction was optimised. The compressing spring of the compaction mechanism was replaced by a linear motor, which is actively controlled to adjust downforce in real time. A force sensor was connected in series with the linear motor to detect the actual downforce from a press wheel acting on soil. The detected downforce was employed as feedback for the fuzzy PID model. A slave real-time control system was constructed by using an STM32 microcontroller. A user interface was designed for the portable master computer system based on the ForLinx embedded platform to facilitate the setting of target downforce and display the actual downforce in real time. Meanwhile, it was able to adjust the system for different operating requirements, such as soil stiffness, moisture, and crop species. Experiments were conducted on a soil bin, and the results indicated that the active control system has better performance than the conventional passive system in downforce control. The downforce was stable with a variance less than 2.6% under different conditions, and it was 8.11% less than the conventional passive system.

scholarly journals Development and Laboratory Evaluation of an Online Controlling Algorithm for Precision Tillage

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5603
Author(s):  
Yashar Sabouri ◽  
Yousef Abbaspour-Gilandeh ◽  
Aliakbar Solhjou ◽  
Mohammad Shaker ◽  
Mariusz Szymanek ◽  
...  
Keyword(s):  
Control System ◽  
Physical Properties ◽  
Soil Compaction ◽  
Hydraulic System ◽  
Laboratory Evaluation ◽  
Variable Depth ◽  
Site Specific ◽  
Experimental Platform ◽  
Depth Control ◽  
Sensor Activation

Soil compaction management relies on costly annual deep tillage. Variable-depth tillage or site-specific tillage modifies the physical properties of the soil at the required zones for the growth of crops. In this study, a depth control system was designed for the subsoiler of the tillage at various depths. For this purpose, an algorithm was written to investigate the subsoiler location and soil compaction. A program was also developed to implement this algorithm using Kinco Builder Software to control the subsoiler depth, which was evaluated on the experimental platform. In this study, four compression sensors were used at a distance of 10 cm up to a depth of 40 cm on the blade mounted at the front of the tractor. The data of these sensors were used as the input and compared with the pressure baseline limit (2.07 MPa), and with the priority to select the greater depth, the depth of subsoiler was determined. At all three modes of sensor activation (single, collective, and combined), this system was able to operate the hydraulic system of the tractor and place the subsoiler at the desired depth through the use of the position sensors.

A controller for safe, convenient operation of LaB6 emitters on electron-beam instruments

1983 ◽  
Vol 41 ◽  
pp. 408-409
Author(s):  
W. J. Abramson ◽  
H. W. Estry ◽  
L. F. Allard
Keyword(s):  
Electron Beam ◽  
Control System ◽  
Thermal Shock ◽  
Appropriate Care ◽  
Electron Guns ◽  
Tungsten Filaments ◽  
Order Of Magnitude ◽  
Main Components

LaB6 emitters are becoming increasingly popular as direct replacements for tungsten filaments in the electron guns of modern electron-beam instruments. These emitters offer order of magnitude increases in beam brightness, and, with appropriate care in operation, a corresponding increase in source lifetime. They are, however, an order of magnitude more expensive, and may be easily damaged (by improper vacuum conditions and thermal shock) during saturation/desaturation operations. These operations typically require several minutes of an operator's attention, which becomes tedious and subject to error, particularly since the emitter must be cooled during sample exchanges to minimize damage from random vacuum excursions. We have designed a control system for LaBg emitters which relieves the operator of the necessity for manually controlling the emitter power, minimizes the danger of accidental improper operation, and makes the use of these emitters routine on multi-user instruments.Figure 1 is a block schematic of the main components of the control system, and Figure 2 shows the control box.

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