DAW MOHAMED EMHEMED Al ZENTANI


Permanent Lecturer

Qualification: Doctorate

Academic rank: Professor

Department of Medical Engineering - School of Applied Sciences and Engineering

Publications
Rapid Prototyping using HIL, PID and Fuzzy Logic Controller
Conference paper

Abstract Rapid Prototyping of embedded hardware/software systems is important, because it shortens the path from specification to the final product. Prototypes play a major role in decision making, concept and design validation, feature and limit exploration, as well as design verification in every phase of the product development cycle, including product planning, requirement engineering, and product development. Rapid prototyping of embedded systems can emulate different kind of processes, through the mathematical modelling that represent their dynamic characteristics. This make easier to emulate different control strategies, which can interact with the real signals of the embedded process, making a better approach of the real response than a simple simulation. This paper presents the results of the emulation of the dynamic behaviour in the study case to work, in order to validate control strategies like PID and Fuzzy, using the concepts of rapid prototyping and hardware-in-the-loop (HIL). To achieve this objective, two embedded systems were employed, the first one to emulate the dynamics of the process, and the second one to implement the control strategy. Both systems were interconnected using the Controller Area Network protocol (CAN). The principal contribution of this work is the methodological development in the application of the control strategies through HIL 

DAW MOHAMED EMHEMED Al ZENTANI, (12-2018), تونس: ACECS, 14-21

Design and Comparison of Two-Loop and Three-Loop Autopilot with PI for Static Unstable Missile
Conference paper

Abstract The characteristics of non-minimum phase and static unstable of a tail controlled tactical missile are presented firstly. Then, in order to eliminate the static error, a cascade PI compensator was introduced to the classic two loop autopilot. Due to the slow tracking for command acceleration, the longitudinal three-loop autopilot design is driven based on LTI model of missile plant to stabilize the non-minimum phase static unstably missile airframe. The focus is to explain the performance and the control effect at different values of velocity and stability derivative (𝑀𝜶) of two algorithms on missile plant. The analysis is executed by establishing a standard algorithm in virtue of MATLAB/Simulink for autopilot design. The simulation results indicated that three-loop topology gives better tracking than two-loop with a cascade PI compensator at different value of stability derivative 𝑀𝜶. On the other hand, two-loop has a better response and less control effort at different velocities. fin angle and fin angle rate are less than the three loop for static unstable and stable missile. 

DAW MOHAMED EMHEMED Al ZENTANI, (12-2018), تونس: ACCES, 8-13

Design of a Flight Control System Based On HILS Test Platform
Conference paper

Abstract: In this Paper the Hardware-In-the-Loop Simulation (HILS) platform is used to design a flight Control system for Unmanned Aerial Vehicles (UAV). A flight Controllers are designed and validated for lateral and longitudinal axes motion using Matlab/Simulink offline simulations and the designed controllers are embedded To the HILS platform for Real time simulation. It is observed that the resulting controller successfully stabilizes the aircraft to achieve flight Trajectory

DAW MOHAMED EMHEMED Al ZENTANI, (12-2017), تونس: CEIT, 39-44

The Mathematical model of 3-D planar based on Multimedia Flash and Simulink
Conference paper

Abstract—this work reports on a high speed flexible automation system based on Cartesian multi-axis coordinate system linear step motor developed, in the target application as a multi-use robot system. The task of this work is to constructs an interactive multimedia page for study and researches the principle’s work of drive of direct action linear step motor, Development the mathematical model and implementation of a closed loop control, based MATLAB/SIMULINK, Study the static and dynamic characteristics of the motor movement which is restricted to the trajectories accessible through the given commands.

DAW MOHAMED EMHEMED Al ZENTANI, (03-2014), ماليزيا: CSEE, 156-160

Steady-State Analysis of 6/4 Switched Reluctance Motor using Matlab/Simulink Environment
Conference paper

Abstract—This work reports on the steady-state analysis and control strategies of switched reluctance motors (SRMs). For this purpose, a theoretical background is introduced and a mathematical model is derived. A Matlab code has been written to determine the motor magnetic characteristics. The inductance profile has also been determined and from which the induced voltage constant, which is used to find the electromagnetic torque, is obtained. A low-performance voltage control strategy is applied to the motor. Simulation results are given to evaluate the overall system performance

DAW MOHAMED EMHEMED Al ZENTANI, (03-2014), ماليزيا: CSEE, 161-166