Iranian Journal of Biosystem Engineering

Iranian Journal of Biosystem Engineering

Design, Development and evaluation of Electronic control valve for hydraulic pump of MF 285 Tractor

Document Type : Research Paper

Author
norooz moradasgharloo
Department of Agricultural Machinery, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
10.22059/ijbse.2016.58772
Abstract
The depth control systems used in Iranian tractors are mechanical and they produce variable tillage depth in uneven field surface. In this research a rotary type electronic control valve was designed and constructed. By using this valve, electro-hydraulic tillage depth control system was developed and installed on the tractor. The control system was composed of: a depth sensor, a Programmable Logic Controller (PLC), a stepper motor with deriver, a control valve and a Programmable Terminal (control panel). In this system, the tillage depth was measured by utilizing a depth sensor and the control valve which is controlled by the stepper motor was used to 3-point linkage control. The laboratory results showed that the depth variations were controlled well by the developed system within ±2 cm in the steady state. Also the field data indicated that the mean tillage depth of electro-hydraulic depth control system was greater than that of the mechanical depth control system with significance difference.
Keywords
electro-hydraulic
tillage
depth control
PLC
stepper motor
Subjects
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Iranian Journal of Biosystem Engineering
Volume 47, Issue 2 - Serial Number 2
Summer 2016
Pages 229-221

  • Receive Date 15 April 2015
  • Revise Date 22 May 2015
  • Accept Date 21 June 2015