Work place: Al-Mustansirya University/ Computer Engineering Department, Baghdad, 10001, Iraq

E-mail: ek_karam@yahoo.com


Research Interests: Image Compression, Image Manipulation, Image Processing, Combinatorial Optimization


Ekhlas H. Karam, Ph. D, Uni. of Technology, Iraq 2007, M. Sc. Uni. of Technology, Iraq 2001.Academic staff member in Computer Engineering department @Al-Mustansirya University. Interested area: Robotic system, different controller design, optimization methods, image processing, FPGA.

Author Articles
Controlling of Mean Arterial Pressure by Modified PI-ID Controller Based on Two Optimization Algorithms

By Ekhlaskaram RawaaHaamed

DOI: https://doi.org/10.5815/ijmecs.2020.04.04, Pub. Date: 8 Aug. 2020

High blood pressure is one of the diseases that most people suffer from, and it becomes a serious disease when it is not controlled precisely, especially during the surgical procedure. There must be anesthesiologists during the operation to monitor the pressure during the operation. It is not good and expensive, for patient safety and injection of the patient with the required dose, and it accurately requires an intelligent control to control the patient's pressure This paper presents nonlinear control system, to regulate the Mean Arterial Pressure (MAP) system. This controller is designed based on slate model that represent the mathematical equation that clarifies relationship between blood pressure and vasoactive drug injection. In this work Squirrel Search Algorithm (SSA) and Bacterial Foraging Optimization (BFO) are considered to optimize the controller parameters. Also nonlinear gain is used in PI-Id controller rather than fixed gain to make the controller much more sensitive to small value of error. Two algorithms applied to the controller to optimize its parameters to compare their results and determine which gives better results. The comparison results show best improvement when using the suggested controller based on SSA Algorithm. the results have no undershot with less (800s) settling time and low error.

[...] Read more.
Modified Integral Sliding Mode Controller Design based Neural Network and Optimization Algorithms for Two Wheeled Self Balancing Robot

By Ekhlaskaram Noor Mjeed

DOI: https://doi.org/10.5815/ijmecs.2018.08.02, Pub. Date: 8 Aug. 2018

Two-wheeled Self-balancing (TWSB) mobile robot is considered to be highly nonlinear and unstable dynamic system. Unstable means that the robot is free to advance forward or backward without any forces applied. It must, therefore, be controlled. The purpose of this work is to design an intelligent nonlinear Modified Integral Sliding Mode Controller (MISMC) based on simple Adaline neural network for balancing a two-wheeled self-balancing mobile robot, in addition to improve the performance of this robot in tracking the desired trajectory.
The simple Adaline neural network is used to enhance the performance of the conventional Integral Sliding Mode Controller (ISMC) which is an effective and powerful technique because it has a high performance. Also, in this work, a Modified Particle Swarm Optimization (MPSO) and Modified Cuckoo Search (MCS) algorithms have been proposed to find and tune the best MISMC parameters and hence enhance the performance characteristics of the robot system by reducing the processing time as well as improving the response accuracy through minimizing the tracking error of the mobile robot. The Integral Square Error (ISE) method has been used as a performance index for the two algorithms (MPSO, MCS) to measure the performance of the proposed controller. Numerical simulations show the efficiency of the suggested controller by handling the balance and tracking problems of the two-wheeled self-balancing mobile robot.

[...] Read more.
Other Articles