All Outputs (131)

Theory and practice for autonomous formation flight of quadrotors via distributed robust sliding mode control protocol with fixed-time stability guarantee (2022)
Journal Article
Mechali, O., Xu, L., Xie, X., & Iqbal, J. (2022). Theory and practice for autonomous formation flight of quadrotors via distributed robust sliding mode control protocol with fixed-time stability guarantee. Control engineering practice, 123, Article 105150. https://doi.org/10.1016/j.conengprac.2022.105150

A detailed theoretical design and technological implementation aspects are presented in this paper to address the aerial formation control problem of networked quadrotors with a fixed-time stability property. The control algorithm is embedded in a di... Read More about Theory and practice for autonomous formation flight of quadrotors via distributed robust sliding mode control protocol with fixed-time stability guarantee.

Maximum Power Extraction from a Standalone Photo Voltaic System via Neuro-Adaptive Arbitrary Order Sliding Mode Control Strategy with High Gain Differentiation (2022)
Journal Article
Anjum, M. B., Khan, Q., Ullah, S., Hafeez, G., Fida, A., Iqbal, J., & R. Albogamy, F. (2022). Maximum Power Extraction from a Standalone Photo Voltaic System via Neuro-Adaptive Arbitrary Order Sliding Mode Control Strategy with High Gain Differentiation. Applied Sciences, 12(6), Article 2773. https://doi.org/10.3390/app12062773

In this work, a photovoltaic (PV) system integrated with a non-inverting DC-DC buck-boost converter to extract maximum power under varying environmental conditions such as irradiance and temperature is considered. In order to extract maximum power (v... Read More about Maximum Power Extraction from a Standalone Photo Voltaic System via Neuro-Adaptive Arbitrary Order Sliding Mode Control Strategy with High Gain Differentiation.

Performance improvement in polymer electrolytic membrane fuel cell based on nonlinear control strategies—A comprehensive study (2022)
Journal Article
Javaid, U., Iqbal, J., Mehmood, A., & Uppal, A. A. (2022). Performance improvement in polymer electrolytic membrane fuel cell based on nonlinear control strategies—A comprehensive study. PLoS ONE, 17(2 February), Article e0264205. https://doi.org/10.1371/journal.pone.0264205

A Polymer Electrolytic Membrane Fuel Cell (PEMFC) is an efficient power device for automobiles, but its efficiency and life span depend upon its air delivery system. To ensure improved performance of PEMFC, the air delivery system must ensure proper... Read More about Performance improvement in polymer electrolytic membrane fuel cell based on nonlinear control strategies—A comprehensive study.

Fixed-time nonlinear homogeneous sliding mode approach for robust tracking control of multirotor aircraft: Experimental validation (2022)
Journal Article
Mechali, O., Xu, L., Xie, X., & Iqbal, J. (2022). Fixed-time nonlinear homogeneous sliding mode approach for robust tracking control of multirotor aircraft: Experimental validation. Journal of The Franklin Institute, 359(5), 1971-2029. https://doi.org/10.1016/j.jfranklin.2022.01.010

This paper presents a robust scheme for fixed-time tracking control of a multirotor system. The aircraft is subjected to matched lumped disturbances, i.e., unmodeled dynamics, parameters uncertainties, and external perturbations besides measurement n... Read More about Fixed-time nonlinear homogeneous sliding mode approach for robust tracking control of multirotor aircraft: Experimental validation.

Neural network-based adaptive global sliding mode MPPT controller design for stand-alone photovoltaic systems (2022)
Journal Article
Haq, I. U., Khan, Q., Ullah, S., Ahmed Khan, S., Akmeliawati, R., Khan, M. A., & Iqbal, J. (2022). Neural network-based adaptive global sliding mode MPPT controller design for stand-alone photovoltaic systems. PLoS ONE, 17(1), Article e0260480. https://doi.org/10.1371/journal.pone.0260480

The increasing energy demand and the target to reduce environmental pollution make it essential to use efficient and environment-friendly renewable energy systems. One of these systems is the Photovoltaic (PV) system which generates energy subject to... Read More about Neural network-based adaptive global sliding mode MPPT controller design for stand-alone photovoltaic systems.

Collaborative position control of pantograph robot using particle swarm optimization (2022)
Journal Article
Ali, N., Ayaz, Y., & Iqbal, J. (2022). Collaborative position control of pantograph robot using particle swarm optimization. International journal of control, automation and systems, 20(1), 198-207. https://doi.org/10.1007/s12555-019-0931-6

This article presents the design and real-time implementation of an optimal collaborative approach to obtain the desired trajectory tracking of two Degree of Freedom (DOF) pantograph end effector position. The proposed controller constructively syner... Read More about Collaborative position control of pantograph robot using particle swarm optimization.

Adaptive FIT-SMC Approach for an Anthropomorphic Manipulator With Robust Exact Differentiator and Neural Network-Based Friction Compensation (2022)
Journal Article
Ali, K., Ullah, S., Mehmood, A., Mostafa, H., Marey, M., & Iqbal, J. (2022). Adaptive FIT-SMC Approach for an Anthropomorphic Manipulator With Robust Exact Differentiator and Neural Network-Based Friction Compensation. IEEE Access, 10, 3378-3389. https://doi.org/10.1109/ACCESS.2021.3139041

In robotic manipulators, feedback control of nonlinear systems with fast finite-time convergence is desirable. However, because of the parametric and model uncertainties, the robust control and tuning of the robotic manipulators pose many challenges... Read More about Adaptive FIT-SMC Approach for an Anthropomorphic Manipulator With Robust Exact Differentiator and Neural Network-Based Friction Compensation.

Terminal sliding mode control of an anthropomorphic manipulator with friction based observer (2021)
Presentation / Conference Contribution
Ali, K., Mehmood, A., & Iqbal, J. (2021). Terminal sliding mode control of an anthropomorphic manipulator with friction based observer. In 2021 International Conference on Robotics and Automation in Industry (ICRAI). https://doi.org/10.1109/ICRAI54018.2021.9651323

The role of modern control techniques has been instrumental in today’s robotic applications because of their increasing requirements for reliability, accuracy, productivity and repeatability. Robotic manipulators are highly non-linear systems with co... Read More about Terminal sliding mode control of an anthropomorphic manipulator with friction based observer.

Robust fuzzy sliding mode controller for a skid-steered vehicle subjected to friction variations (2021)
Journal Article
Mehmood, Y., Aslam, J., Ullah, N., Alsheikhy, A. A., Din, E. U., & Iqbal, J. (2021). Robust fuzzy sliding mode controller for a skid-steered vehicle subjected to friction variations. PLoS ONE, 16(11), Article 0258909. https://doi.org/10.1371/journal.pone.0258909

Skid-steered vehicles (SSV) are gaining huge importance in the market due to their applications like construction, agricultural work, material handling etc. The accuracy of performing such tasks require a robust control algorithm. The design of such... Read More about Robust fuzzy sliding mode controller for a skid-steered vehicle subjected to friction variations.

Unscented Kalman filter for airship model uncertainties and wind disturbance estimation (2021)
Journal Article
Wasim, M., Ali, A., Ahmad Choudhry, M., Saleem, F., Shaikh, I. U. H., & Iqbal, J. (2021). Unscented Kalman filter for airship model uncertainties and wind disturbance estimation. PLoS ONE, 16(11 November), Article e0257849. https://doi.org/10.1371/journal.pone.0257849

An airship is lighter than an air vehicle with enormous potential in applications such as communication, aerial inspection, border surveillance, and precision agriculture. An airship model is made up of dynamic, aerodynamic, aerostatic, and propulsiv... Read More about Unscented Kalman filter for airship model uncertainties and wind disturbance estimation.

Control of an anthropomorphic manipulator using LuGre friction model - Design and experimental validation (2021)
Journal Article
Ali, K., Mehmood, A., Muhammad, I., Razzaq, S., & Iqbal, J. (2021). Control of an anthropomorphic manipulator using LuGre friction model - Design and experimental validation. Strojniški vestnik - Journal of Mechanical Engineering, 67(9), 401-410. https://doi.org/10.5545/sv-jme.2021.7258

Automation technology has been extensively recognized as an emerging field in various industrial applications. Recent breakthrough in flexible automation is primarily due to deployment of robotic arms or manipulators. Autonomy in these manipulators i... Read More about Control of an anthropomorphic manipulator using LuGre friction model - Design and experimental validation.

Optimization of fuzzy logic quadrotor attitude controller - particle swarm, Cuckoo search and BAT algorithms (2021)
Journal Article
Siddiq Zatout, M., Rezoug, A., Rezoug, A., Baizid, K., & Iqbal, J. (2021). Optimization of fuzzy logic quadrotor attitude controller - particle swarm, Cuckoo search and BAT algorithms. International Journal of Systems Science, https://doi.org/10.1080/00207721.2021.1978012

Bio-inspired optimisation algorithms have recently attracted much attention in the control community. Most of these algorithms mimic particular behaviours of some animal species in such a way that allows solving optimisation problems. The present pap... Read More about Optimization of fuzzy logic quadrotor attitude controller - particle swarm, Cuckoo search and BAT algorithms.

Fault-tolerant scheme for robotic manipulator -Nonlinear robust back-stepping control with friction compensation (2021)
Journal Article
Ali, K., Mehmood, A., & Iqbal, J. (2021). Fault-tolerant scheme for robotic manipulator -Nonlinear robust back-stepping control with friction compensation. PLoS ONE, 16(8), Article e0256491. https://doi.org/10.1371/journal.pone.0256491

Emerging applications of autonomous robots requiring stability and reliability cannot afford component failure to achieve operational objectives. Hence, identification and countermeasure of a fault is of utmost importance in mechatronics community. T... Read More about Fault-tolerant scheme for robotic manipulator -Nonlinear robust back-stepping control with friction compensation.

A deterministic approach for design of supervisory control of LPV systems with delay (2021)
Journal Article
Zahid, C. N., Salim, M., Riaz, R. A., & Iqbal, J. (2021). A deterministic approach for design of supervisory control of LPV systems with delay. PLoS ONE, 16(8), Article e0256408. https://doi.org/10.1371/journal.pone.0256408

Linear Parameter Varying (LPV) systems and their control have gained attraction recently as they approximate nonlinear systems with higher order than ordinary linear systems. On the other hand, time delay is an inherent part of various real-life appl... Read More about A deterministic approach for design of supervisory control of LPV systems with delay.

Finite-Time Attitude Control of Uncertain Quadrotor Aircraft via Continuous Terminal Sliding-Mode-Based Active Anti-Disturbance Approach (2021)
Presentation / Conference Contribution
Mechali, O., Iqbal, J., Mechali, A., Xie, X., & Xu, L. (2021). Finite-Time Attitude Control of Uncertain Quadrotor Aircraft via Continuous Terminal Sliding-Mode-Based Active Anti-Disturbance Approach. In IEEE International Conference on Mechatronics and Automation, ICMA 2021 (1170-1175). https://doi.org/10.1109/ICMA52036.2021.9512751

This research addresses the problem of robust attitude control for a quadrotor operating in an environment polluted with lumped disturbances. A new continuous terminal sliding mode-based active anti-disturbance control (CTSMBAADC) is proposed by inno... Read More about Finite-Time Attitude Control of Uncertain Quadrotor Aircraft via Continuous Terminal Sliding-Mode-Based Active Anti-Disturbance Approach.

Distributed Leader-Follower Formation Control of Quadrotors Swarm Subjected to Disturbances (2021)
Presentation / Conference Contribution
Mechali, O., Iqbal, J., Wang, J., Xie, X., & Xu, L. (2021). Distributed Leader-Follower Formation Control of Quadrotors Swarm Subjected to Disturbances. In 2021 IEEE International Conference on Mechatronics and Automation (1442-1447). https://doi.org/10.1109/ICMA52036.2021.9512623

This paper proposes a novel control scheme for a group of quadrotors aircrafts that form a leader-follower configuration and are subjected to nonlinear behavior with lumped disturbances. For each aircraft, a distributed formation control law is desig... Read More about Distributed Leader-Follower Formation Control of Quadrotors Swarm Subjected to Disturbances.

UAVs-UGV Leader Follower Formation Using Adaptive Non-Singular Terminal Super Twisting Sliding Mode Control (2021)
Journal Article
Ullah, N., Mehmood, Y., Aslam, J., Ali, A., & Iqbal, J. (2021). UAVs-UGV Leader Follower Formation Using Adaptive Non-Singular Terminal Super Twisting Sliding Mode Control. IEEE Access, 9, 74385-74405. https://doi.org/10.1109/ACCESS.2021.3081483

Leader follower formation of unmanned aerial vehicles (UAVs) and unmanned ground vehicles (UGVs) has found numerous applications such as surveillance of critical infrastructure, industrial automation and disaster management emergency. For completion... Read More about UAVs-UGV Leader Follower Formation Using Adaptive Non-Singular Terminal Super Twisting Sliding Mode Control.

Robust Finite-Time Trajectory Tracking Control of Quadrotor Aircraft via Terminal Sliding Mode-Based Active Antidisturbance Approach: A PIL Experiment (2021)
Journal Article
Mechali, O., Iqbal, J., Xie, X., Xu, L., & Senouci, A. (2021). Robust Finite-Time Trajectory Tracking Control of Quadrotor Aircraft via Terminal Sliding Mode-Based Active Antidisturbance Approach: A PIL Experiment. International Journal of Aerospace Engineering, 2021, Article 5522379. https://doi.org/10.1155/2021/5522379

This paper presents an accurate solution of finite-time Cartesian trajectory tracking control problem of a quadrotor system by designing and implementing a novel robust flight-control algorithm. The quadrotor is subject to nonlinearities, unmodeled d... Read More about Robust Finite-Time Trajectory Tracking Control of Quadrotor Aircraft via Terminal Sliding Mode-Based Active Antidisturbance Approach: A PIL Experiment.

System architecture of a proactive intelligent system to monitor health of older adults living alone (2021)
Journal Article
Al-Mejibli, I., Al-Majeed, S., Karam, J., Iqbal, J., Adolfo, C. M., & Yalung, C. (2021). System architecture of a proactive intelligent system to monitor health of older adults living alone. International Journal of Computing and Digital Systems, 10(1), 509-517. https://doi.org/10.12785/IJCDS/100149

Worldwide improvements in the quality of life highlight immense need to have a remote health monitoring system that can provide critical biomedical data. This paper presents a low-cost health monitoring system, forming part of the Internet of Things... Read More about System architecture of a proactive intelligent system to monitor health of older adults living alone.

A new perspective on teaching the natural exponential to engineering students (2021)
Journal Article
Ullah, M., Aman, M. N., Wolkenhauer, O., & Iqbal, J. (2021). A new perspective on teaching the natural exponential to engineering students. International Journal of Mathematical Education in Science and Technology, https://doi.org/10.1080/0020739X.2021.1896812

The natural exponential and logarithm are typically introduced to undergraduate engineering students in a calculus course using the notion of limits. We here present an approach to introduce the natural exponential/logarithm through a novel interpret... Read More about A new perspective on teaching the natural exponential to engineering students.