Papers by Idris Idris Sunusi
Applied Sciences, 2021
Electric tractors (ETs) have attached significant attention in recent years due to the increasing... more Electric tractors (ETs) have attached significant attention in recent years due to the increasingly stringent exhaust emission policies all over the world. However, testing and evaluating all possible architectures and component sizes for ETs would be a time-consuming and expensive task. Establishing a comprehensive test bench that can implement different powertrain architectures as much as possible is thus an important and challenging task. In this study, a novel reconfigurable test platform is proposed according to the analysis results of the powertrain topologies of ETs. These results provide a verification platform to explore powertrain architecture options in future work. To be easily reconstructed under different architectures, the component installation and control system of this test platform was designed based on the modular, reconfigurable concept. To verify the feasibility of the reconfigurable test platform, two powertrain configurations were built based on this test pla...
Energies, 2021
Estimation and control of wheel slip is a critical consideration in preventing loss of traction, ... more Estimation and control of wheel slip is a critical consideration in preventing loss of traction, minimizing power consumptions, and reducing soil disturbance. An approach to wheel slip estimation and control, which is robust to sensor noises and modeling imperfection, has been investigated in this study. The proposed method uses a simplified form of wheels longitudinal dynamic and the measurement of wheel and vehicle speeds to estimate and control the optimum slip. The longitudinal wheel forces were estimated using a robust sliding mode observer. A straightforward and simple interpolation method, which involves the use of Burckhardt tire model, instantaneous values of wheel slip, and the estimate of longitudinal force, was used to determine the optimum slip ratio that guarantees maximum friction coefficient between the wheel and the road surface. An integral sliding mode control strategy was also developed to force the wheel slip to track the desired optimum value. The algorithm was...
An experiment was conducted to develop algorithms for online terrains classification by robots us... more An experiment was conducted to develop algorithms for online terrains classification by robots used in agricultural environments. An instrumented agricultural tractor robotic platform was used to collect data from four different terrains; concrete, dense grass, sparse grass, and firm soil. The data collected were hand-labeled, segmented, and transformed from a time domain to frequency domain using fast furrier transform (FFT). The feature dimension of the transformed data was reduced using principal component analysis (PCA), and the principal components that account for 95% of the total variation in the feature data were selected. The selected features were used to train decision tree and linear discriminant analysis classifiers. From the result, the linear discriminant analysis performed better than the decision tree, and PCA improved the speed and accuracy of the online classification and offline training.
Computers and Electronics in Agriculture
Scientific Reports
Prediction of a precise subsoiling using an analytical model (AM) and Discrete Element Method (DE... more Prediction of a precise subsoiling using an analytical model (AM) and Discrete Element Method (DEM) was conducted to explain cutting forces and the soil profile induced changes by a subsoiler. Although sensors, AMs and DEM exist, there are still cases of soil structure deformation during deep tillage. Therefore, this study aimed to provide a clear understanding of the deep tillage using prediction models. Experimental data obtained in the soil bin trolley with force sensors were used for verification of the models. Experiments were designed using Taguchi method. In the AM, the modified-McKyes and Willat and Willis equations were used to determine cutting forces and soil furrow profile respectively. Calculations were done using MATLAB software. The elastoplastic behavior of soil was incorporated into the DEM. The DEM predicted results with the best regression of 0.984 $$R^{2}$$ R 2 at a $$NRMSE$$ NRMSE of 1.936 while the AM had the lowest $$R^{2}$$ R 2 of 0.957, at a $$NRMSE$$ NRMSE ...
International Journal of Control, Automation and Systems
BAYERO JOURNAL OF ENGINEERING AND TECHNOLOGY (BJET), 2018
A comprehensive performance evaluation was conducted on an existing IAR multi crop thresher to id... more A comprehensive performance evaluation was conducted on an existing IAR multi crop thresher to identify its
capabilities and limitations on sorghum threshing. The threshing unit was identified to have some deficiencies in the
form of inadequate number of beaters and the absence of cutting knives on the cylinder cover. Test result showed that
its performance parameters were low. The output capacity, threshing efficiency, cleaning efficiency, grain damages
and scatter losses were found to be 76.32 kg/hr, 90.87%, 88.95%, 5.17% and 4.30% respectively. The thresher was
modified by redesigning the threshing, cleaning and feeding units. To increase threshing effectiveness; the number of
pegs around the threshing cylinder was increased, three rows of cutting knives were mounted on the cylinder cover
and the size of the sieve shaker holes were redesigned by considering sorghum grain size characteristics. The
redesigned thresher was fabricated using locally available materials. Its performance was evaluated under four feed
rates; 3, 4, 5 and 6 kg/min, four cylinder speeds; 600, 700, 800, and 900 rpm and two levels of moisture content (8.93
and 10.38%). Test result of the modified thresher indicate an average output capacity, threshing efficiency, cleaning
efficiency, grain damages and scatter losses values of 219.92 kg/hr, 98.00%, 95.58 %, 1.78% and 4.36% respectively
Modification and Performance Evaluation of Cleanin by Idris Idris Sunusi
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Papers by Idris Idris Sunusi
capabilities and limitations on sorghum threshing. The threshing unit was identified to have some deficiencies in the
form of inadequate number of beaters and the absence of cutting knives on the cylinder cover. Test result showed that
its performance parameters were low. The output capacity, threshing efficiency, cleaning efficiency, grain damages
and scatter losses were found to be 76.32 kg/hr, 90.87%, 88.95%, 5.17% and 4.30% respectively. The thresher was
modified by redesigning the threshing, cleaning and feeding units. To increase threshing effectiveness; the number of
pegs around the threshing cylinder was increased, three rows of cutting knives were mounted on the cylinder cover
and the size of the sieve shaker holes were redesigned by considering sorghum grain size characteristics. The
redesigned thresher was fabricated using locally available materials. Its performance was evaluated under four feed
rates; 3, 4, 5 and 6 kg/min, four cylinder speeds; 600, 700, 800, and 900 rpm and two levels of moisture content (8.93
and 10.38%). Test result of the modified thresher indicate an average output capacity, threshing efficiency, cleaning
efficiency, grain damages and scatter losses values of 219.92 kg/hr, 98.00%, 95.58 %, 1.78% and 4.36% respectively
Modification and Performance Evaluation of Cleanin by Idris Idris Sunusi
capabilities and limitations on sorghum threshing. The threshing unit was identified to have some deficiencies in the
form of inadequate number of beaters and the absence of cutting knives on the cylinder cover. Test result showed that
its performance parameters were low. The output capacity, threshing efficiency, cleaning efficiency, grain damages
and scatter losses were found to be 76.32 kg/hr, 90.87%, 88.95%, 5.17% and 4.30% respectively. The thresher was
modified by redesigning the threshing, cleaning and feeding units. To increase threshing effectiveness; the number of
pegs around the threshing cylinder was increased, three rows of cutting knives were mounted on the cylinder cover
and the size of the sieve shaker holes were redesigned by considering sorghum grain size characteristics. The
redesigned thresher was fabricated using locally available materials. Its performance was evaluated under four feed
rates; 3, 4, 5 and 6 kg/min, four cylinder speeds; 600, 700, 800, and 900 rpm and two levels of moisture content (8.93
and 10.38%). Test result of the modified thresher indicate an average output capacity, threshing efficiency, cleaning
efficiency, grain damages and scatter losses values of 219.92 kg/hr, 98.00%, 95.58 %, 1.78% and 4.36% respectively