Abstract
This study proposes a LabVIEW based autonomous agricultural robot which can be used for ploughing. The control logic is designed using fuzzy logic controller to operate the robot in autonomous mode. The robot can also be controlled from a remote place using internet and its position is monitored using Global Positioning System (GPS), Data Socket protocol and Wi-Fi connection. Two DC motors are used to achieve movement control of the robot and they are controlled by the designed fuzzy logic controller. This control logic has two loops. One is outer speed control loop and the other one is inner current control loop. Based on the present position of the robot, the reference speed value is generated and based on this reference speed value the movement of an agricultural robot is controlled. Laboratory Virtual Instrument Engineering Workbench (LabVIEW) is a graphical programming environment suited for system-level design. This LabVIEW software enables complex and expensive equipment to be replaced by simpler and less expensive hardware. The primary difference between natural instrumentation and virtual instrumentation is the software component of the virtual instrument.
Highlights
Remote real-time control of processes is receiving considerable attention in the academic and industrial communities
This study proposes a Laboratory Virtual Instrument Engineering Workbench (LabVIEW) based autonomous agricultural robot which can be used for ploughing
The robot can be controlled from a remote place using internet and its position is monitored using Global Positioning System (GPS), Data Socket protocol and Wi-Fi connection
Summary
Remote real-time control of processes is receiving considerable attention in the academic and industrial communities. Several universities have developed Internet based process control laboratories for distance education using LabVIEW and its communication protocols (Prema et al, 2009). Conventional Proportional Integral Derivative (PID) control has difficulty in dealing with dynamic speed tracking due to parameter variations and load disturbances (Olden et al, 2001; Kumar et al, 2008; Huang and Lee, 2008). These controllers show high performance only for one unique act point. The Plough is a tool used in agriculture for initial cultivation of soil in preparation for sowing seed or planting. Earlier ploughing was done manually but today it is neither profitable nor possible to get a sufficient number of labors for this job
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