Ihsan Ullah

Dr. Ihsan Ullah

COMSATS University Islamabad, Abbottabad Campus
orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 October 2018 in Journal of Energy Storage
Verified
Journal Article
Closed access
BZBizzat Hussain Zaidi
Bizzat Hussain Zaidi
DBDost Muhammad Saqib Bhatti
Dost Muhammad Saqib Bhatti
IUIhsan Ullah
Ihsan Ullah

1 March 2019
Verified
Conference Paper
Closed access
NANisar Ahmad
Nisar Ahmad
AHAli Hussain
Ali Hussain
IUIhsan Ullah
Ihsan Ullah
BZBizzat Hussain Zaidi
Bizzat Hussain Zaidi
With the passage of time the trend of technology usage by farmers has been increasing to improve the quantity and quality of crop production. The multi parameter monitoring system is presented in this research where farmers/users will be updated with the help of internet. In this research two different technologies, Internet of things (IoT) and wireless sensor network are combined in an innovative way for smart remote monitoring system of crops. Sensor nodes are deployed in fields which gather data about different parameters. At transmission side these values are displayed and then transmitted to the base station using a network of XBee sensors. A database is established for maintaining sensor values which could be helpful for research and analysis of environmental factors such as soil moisture, UV index, rain, air pressure and humidity on crop production.

27 January 2025 in Sensors
Verified
Journal Article
Open access
PDF file
IUIhsan Ullah
Ihsan Ullah
NKNabeel Khan
Nabeel Khan
SMSufyan Ali Memon
Sufyan Ali Memon
WKWan-Gu Kim
Wan-Gu Kim
JSJawad Saleem
Jawad Saleem
SMSajjad Manzoor
Sajjad Manzoor
Predictive maintenance of induction motors continues to be a significant challenge in ensuring industrial reliability and minimizing downtime. In this study, machine learning techniques are utilized to enhance fault diagnosis through the use of the Machinery Fault Database (MAFAULDA). A detailed extraction of statistical features was performed on multivariate time-series data to capture essential patterns that could indicate potential faults. Three machine learning algorithms—deep neural networks (DNNs), support vector machines (SVMs), and K-nearest neighbors (KNNs)—were applied to the dataset. Optimization strategies were carefully implemented along with oversampling techniques to improve model performance and handle imbalanced data. The results achieved through these models are highly promising. The SVM model demonstrated an accuracy of 95.4%, while KNN achieved an accuracy of 92.8%. Notably, the combination of deep neural networks with fast Fourier transform (FFT)-based autocorrelation features produced the highest performance, reaching an impressive accuracy of 99.7%. These results provide a novel approach to machine learning techniques in enhancing operational health and predictive maintenance of induction motor systems.

5 December 2019 in Sensors
Verified
Journal Article
Open access
PDF file
HAHaseeb Ahmed
Haseeb Ahmed
IUIhsan Ullah
Ihsan Ullah
UKUzair Khan
Uzair Khan
Muhammad QureshiMuhammad Qureshi
Muhammad Qureshi
SMSajjad Manzoor
Sajjad Manzoor
Raheel NawazRaheel Nawaz
Raheel Nawaz
Fusion of the Global Positioning System (GPS) and Inertial Navigation System (INS) for navigation of ground vehicles is an extensively researched topic for military and civilian applications. Micro-electro-mechanical-systems-based inertial measurement units (MEMS-IMU) are being widely used in numerous commercial applications due to their low cost; however, they are characterized by relatively poor accuracy when compared with more expensive counterparts. With a sudden boom in research and development of autonomous navigation technology for consumer vehicles, the need to enhance estimation accuracy and reliability has become critical, while aiming to deliver a cost-effective solution. Optimal fusion of commercially available, low-cost MEMS-IMU and the GPS may provide one such solution. Different variants of the Kalman filter have been proposed and implemented for integration of the GPS and the INS. This paper proposes a framework for the fusion of adaptive Kalman filters, based on Sage-Husa and strong tracking filtering algorithms, implemented on MEMS-IMU and the GPS for the case of a ground vehicle. The error models of the inertial sensors have also been implemented to achieve reliable and accurate estimations. Simulations have been carried out on actual navigation data from a test vehicle. Measurements were obtained using commercially available GPS receiver and MEMS-IMU. The solution was shown to enhance navigation accuracy when compared to conventional Kalman filter.

19 December 2019 in Iranian Journal of Science and Technology, Transactions of Electrical Engineering
Verified
Journal Article
Closed access
PDF file
SMSajjad Manzoor
Sajjad Manzoor
UKUzair Khan
Uzair Khan
IUIhsan Ullah
Ihsan Ullah

20 November 2018 in Sensors
Verified
Journal Article
Open access
PDF file
IUIhsan Ullah
Ihsan Ullah
Muhammad QureshiMuhammad Qureshi
Muhammad Qureshi
UKUzair Khan
Uzair Khan
SMSufyan Ali Memon
Sufyan Ali Memon
YSYifang Shi
Yifang Shi
DPDongLiang Peng
DongLiang Peng
A localization and tracking algorithm for an early-warning tracking system based on the information fusion of Infrared (IR) sensor and Laser Detection and Ranging (LADAR) is proposed. The proposed Kalman filter scheme incorporates Out-of-Sequence Measurements (OOSMs) to address long-range, high-speed incoming targets to be tracked by networked Remote Observation Sites (ROS) in cluttered environments. The Rauch–Tung–Striebel (RTS) fixed lag smoothing algorithm is employed in the proposed technique to further improve tracking accuracy, which, in turn, is used for target profiling and efficient filter initialization at the targeted platform. This efficient initialization increases the probability of target engagement by increasing the distance at which it can be effectively engaged. The increased target engagement range also reduces risk of any damage from debris of the engaged target. Performance of the proposed target localization algorithm with OOSM and RTS smoothing is evaluated in terms of root mean square error (RMSE) for both position and velocity, which accurately depicts the improved performance of the proposed algorithm in comparison with existing retrodiction-based OOSM filtering algorithms. The effects of assisted target state initialization at the targeted platform are also evaluated in terms of Time to Impact (TTI) and true track retention, which also depict the advantage of the proposed strategy.