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71篇 您的检索式:作者名="Raheman"
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1Development of a metering mechanism with serial robotic arm for handling paper pot seedlings in a vegetable transplanter显示文摘This paper describes the development of an automated metering mechanism for vegetable transplanter.It consisted of a 3-DOF serial robotic arm and an automatic feeding conveyor.The robotic arm was developed to pick and drop tomato seedlings raised in biodegradable paper pots.The volume of each pot was 50 cm^(3)(3.5 cmdiameter and 5.2 cmheight)with a maximumtotalweight of 47 g including potmix and seedling.Amatrix type feeding conveyorwas developed to convey the pot seedlings to a predefined positionwhere the robotic armcould pick up these seedlings one by one.LDR(Light Dependent Resistor)-LED(Light Emitting Diode)sensing unit was used to perform the intermittent movement of the conveyor.The developed system was evaluated under both laboratory and field conditions.The robotic arm was able to pick and drop 20 seedlings per minute and its effective cycle time per handling one seedling was varying from 2.5 to 3.1 s.Power consumption of the conveyor of the developed system and the robotic arm was 18 W and 16 W,respectively.The conveying,metering and overall efficiency of the developed metering mechanism under laboratory condition were 96.83%,95.91%and 92.86%,respectively as compared to 94.7%,93.28%and 88.33%,under field condition.The developed robotic armbasedmeteringmechanismwas simple,light inweight and effectively handled the pot seedlings without damage and would thus help in mechanizing transplanting of vegetable seedlings.Vikas Paradkar Hifjur Raheman Rahul K. 2021Artificial Intelligence in Agriculture2021,,1:5
2Design of a 4 DOF parallel robot arm and the firmware implementation on embedded system to transplant pot seedlings显示文摘This paper presents a firmware design and its implementation on a real time embedded system for driving a 4 DOF parallel robot arm.The firmware primarily comprised of two components to produce motion of the robot arm:a)generation of continuous position coordinates and b)generation of actuating signals.These two componentswere processed in two different microcontrollerswith a common communication bus.The position generation algorithm produced and transmitted continuous position data to the motion generation algorithm in the form of G-code strings by reading the input positionswhichwere previously stored by the user in EEPROMmemory of the microcontroller.The receipt of a handshake signal synchronized the data transmission between these components through a communication bus.An LCD display and keypad were used as human-machine interface(HMI)to communicate with the user to set the robot target coordinates.The mechanical structure of the robot arm comprised of multiple links which were actuated by steppermotors.The workspace boundary were sensed by limit switches.The kinematic equations represented the gripper position for the corresponding input joint angles.A microcontroller was used to compute kinematic equations of the robot arm with the help of motion generation algorithm to generate actuation signals for the simultaneous movement of robot joints.The kinematic equations were solved with the dual-core capability of the microcontroller using real time operating system(RTOS),which made the computation faster with an average computation time of 198μs per step.The developed firmware was implemented and tested on a 4 DOF parallel manipulator using embedded microcontrollers for continuous pickup and place of the paper pot seedlings for automating the metering of pot seedlings.The cycle time taken for pickup and dropping of each seedling was 3.5 s with a success rate of 93.3%.Rahul K Hifjur Raheman Vikas Paradkar 2020Artificial Intelligence in Agriculture2020,,1:4
3Development of a walk-behind type hand tractor powered vegetable transplanter for paper pot seedlings显示文摘G.V. Prasanna Kumar H. Raheman 2011Biosystems Engineering2011,,2:2
4Biodiesel production from mahua (Madhuca indica ) oil having high free fatty acids 显示文摘Shashikant Vilas Ghadge Hifjur Raheman 2005Biomass and Bioenergy2005,28,:1
5Process optimization for biodiesel production from mahua (Madhuca indica) oil using response surface methodology 显示文摘Shashikant Vilas Ghadge Hifjur Raheman 2006Bioresource Technology2006,97,:1
6Biodiesel production from jatropha oil (Jatropha curcas) with high free fatty acids: an optimized process 显示文摘TIWARI A K KUMAR A RAHEMAN H 2007Biomass and Bioenergy2007,31,8:1
7Biodiesel production from mahua (madhuca indica) oil having high free fatty acids显示文摘Ghadge S V Raheman H 2005Biomass and Bioenergy2005,28,:1
8Draught prediction of agricultural implements using reference tillage tools in sandy clay loam soil显示文摘Sahu R K Raheman H 2006Biosystems Engineering2006,94,2:1
9Biosiesel production from mahua (Madhuca indica)oil having high free fatty acids显示文摘Ghadge S V Raheman H 2005Biomass and Bioenergy2005,28,:1
10Biodiesel pro- duction from Jatropha oil (Jatropha curcas) with high free fatty acids : an optimized process 显示文摘TIWARI A K KUMAR A RAHEMAN H 2007Biomass Bioenergy2007,31,8:1
11Prediction of optimized pretreatment process parameters for biodiesel productionusingANN and GA显示文摘Rajendra M Jena P C Raheman H 0,,05:1
12Steering forces on undriven tractor wheel 显示文摘Raheman H Singh R 2004Journal of Terramechanics2004,40,:1
13Working capital management and profitability:Case of Pakistani firms显示文摘Abdul Raheman Mohamed Nasr 2007International Review of Business Research Pa-pers2007,3,2:1
14Biodiesel pro- duction from jatropha oil (Jatropha curcas ) with high free fatty acids : an optimized process 显示文摘TIWARI A K KUMAR A RAHEMAN H 2007Biomass Bioenerg2007,31,:1
15Biodiesel production from mahua (Madhuca indica) oil having high free fatty acids显示文摘Shashikant Vilas Ghadge Hifjur Raheman 2005Biomass and Bioenergy2005,28,:1
16Adeeision Support Sys- tem on Matching and Field Performance Prediction of Tractor-implement System 显示文摘Sahu R K Raheman H 2008Computers and Electronics in Agriculture2008,60,:1
17Process optimization for biodiesel production from mahua (Madhuca indica) oil using response surface methodology显示文摘Shashikant Vilas Ghadge Hifjur Raheman 2006Bioresource Technology2006,97,3:1
18Biodiesel production from mahua oil having high free fatty acids 显示文摘GHADGE S V RAHEMAN H 2005Biomass and Bioenergy2005,28,:1
19Biodiesel production from mahua (Madhuca indica) oil having high free fatty acids显示文摘GHADGE S V RAHEMAN H 2005Biomass Bioenerg2005,28,6:1
20Biodiescl production from jatropha oil( Jatropha curcaz) with high free fatty acids : an optimized process 显示文摘Tiwari Alok Kumar Kumar Akhilesh Raheman Hifjur 2007Biomass and Bioenergy2007,31,8:1
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