Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Type

Aircraft Pitch Control Using Type-2 Fuzzy Logic

Yamama A.shafeek

Engineering and Technology Journal, 2015, Volume 33, Issue 3, Pages 668-681

Modern aircrafts design is tending to employ automatic control in their every part.In this paper, an autopilot is designed to control the pitch of an aircraft using both PD-like type-1 and type-2 fuzzy logic controllers. The flight system is exposed to atmospheric effects like wind speed, rain, temperature… etc, and noise from the system,which affects the response. To test the effectiveness of the two controllers, three different cases are simulated; system without disturbance and system with slow and fast varying disturbances.

Design of Type-2 Fuzzy Logic Controller for a Simple Furnace System

Saba T. Salim

Engineering and Technology Journal, 2012, Volume 30, Issue 8, Pages 1306-1317

Model uncertainty and robustness have been a central theme in the field of automatic control. Many control techniques are used to reduce the effects of uncertainty which may appear in different forms as disturbances, dynamic delays or as other imperfections in the models used.In this paper a comparison between conventional type -1 fuzzy logic controller and type -2 fuzzy logic controller has done in simulation conditions of a simple temperature control of a furnace system to show the great effect of the new generation of fuzzy logic
controllers to improve the performance of a system with high level of uncertainty.

Proposed 256 bits RC5 Encryption Algorithm Using Type-3 Feistel Network

Yossra H. Ali

Engineering and Technology Journal, 2010, Volume 28, Issue 12, Pages 2337-2352

Proposed 256 bits RC5 is an improvement to RC5, designed to meet
the requirements of increased security and better performance. Proposed
256 bits RC5 algorithm makes use of data dependent rotations. One new
feature of proposed 256 bits RC5 algorithm is modified its design to use
four 64-bit registers rather than two 32-bit registers. The proposal 256 bits
RC5 algorithm using Type-3 Feistel network which is iterated simple
function 20 times. An Avalanche Effect of RC5 is about 31.372 if we
change the same amount of information in key for 256 bits RC5 then the
Avalanche Effect is about 142.909. The proposed algorithm is resistant to
matching and a dictionary attack which is increased the security of the
previous RC5 algorithm by using block size of 256 bits instead of 64 bits.