Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : fuzzy PID

Congestion Avoidance and Control in Internet Router Based on Fuzzy AQM

Hanan M. Kadhim; Ahmed A. Oglah

Engineering and Technology Journal, 2021, Volume 39, Issue 2A, Pages 233-247
DOI: 10.30684/etj.v39i2A.1799

The internet has made the world a little community, linking millions of people, organizations, and equipment for different purposes. The great impact of these networks in our lives makes their efficiency a vital matter to take care of, and this needs handling some problems including congestion. In this paper, the fuzzy-PID controller is used to control the nonlinear TCP / AQM model. This controller adjusts congestion of the computer network and commits controlled pressurized signaling features. Many experiments were carried out using different network parameter values, various queue sizes, and additional disturbances to verify the robustness and efficiency of the proposed controller. From all experiments carried out in the NS-2 simulator version (2.35), the results show the superiority of the FPID controller under different network traffic conditions.

Design and Implementation of a Fuzzy Logic Controller for Inverted Pendulum System Based on Evolutionary Optimization Algorithms

Ahmed F. Ghaliba; Ahmed A. Oglah

Engineering and Technology Journal, 2020, Volume 38, Issue 3A, Pages 361-374
DOI: 10.30684/etj.v38i3A.400

The inverted pendulum is a standard classical problem in the branch of
control and systems. If a cart is bushed by force then its position and angle
of the pendulum will be changed. Several controllers may employed,
keeping the pendulum arm upright by controlling at the cart location. In
this search paper, the fuzzy-like PID (FPID) controller has been used to
control the inverted pendulum, and the parameters of the controller are
tuned with several evolutionary optimization algorithms like a genetic
algorithm (GA), ant colony optimization (ACO), and social spider
optimization (SSO.) The result of tuned FPID with evolutionary
optimization is compared with conventional PID, and it shows that FPID
with SSO has been given the best result.