İbrahim Sina Kuseyri

• PhD
• Engineering Faculty at Marmara University

Rotors suspended with electromagnetic bearings are inherently unstable; therefore feedback control is an essential part of their operation. Despite the nonlinear form of the actuator (electromagnetic bearing) dynamics, plant (rotor) model is linear time-invariant at constant rotor speed. Primary sources of uncertainty in rotor/AMB system dynamics a...

The need for on-line information in any environment has led to the development of mobile satellite communication terminals. These high data-rate terminals require inertial antenna pointing error tolerance within fractions of a degree. However the base motion of the antenna platform in mobile applications complicates this pointing problem and must b...

A mobile satellite communication antenna is a device installed on a moving carrier for mobile satellite communication. Gimballed motorized pedestals are used to eliminate the effect of disturbance and maintain uninterrupted communication when the carrier is moving. Mobile satellite communication antennas are becoming increasingly more popular due m...

In this paper we design, analyze and compare the performance of various stabilizing robust controllers for the model of a horizontal rotor with active magnetic bearings. Rotors suspended with electromagnetic bearings are inherently unstable; therefore, feedback control is an essential part of their operation. Despite the nonlinear form of the actua...

Advances in wind turbine power generation technology and legislative decisions of governments that are favorable to renewable power have lead wind energy to be an increasingly viable alternative to conventional power generation. However, because of the broadly variable loads and the aggressive operating conditions, wind turbines are subject to rela...

The objective of this paper is to design and compare the performance of robust H_inf controllers for slow and fully active electromechanical suspension systems. H_inf controllers are synthesized based on half-car model dynamics. The criteria used for comparison are linear and angular body accelerations representing the ride comfort, tire compressio...

Yapılan çalışmada depolama sistemlerinde kullanılan otomatik depolama vincinin titreşiminin kontrol edilmesi ve bu sayede ürün alma bırakma zamanının azaltılması için sisteme girilen sinyalin ileri besleme kontrolü ile uygulanması incelenmiştir. Kontrol edilmesi amaçlanan otomatik depolama vinci için yapının indirgenmiş bir modeli belirlenmiş ve bu...

z : Tesislerdeki makinelerin çalışması sırasında meydana gelen titreşimler çalışma şartlarını zorlaştırmakta ve zaman içerisinde makinenin bir aksamının veya bütününün arıza yapma-sına neden olmaktadır. Titreşim spektrum analizi yapılarak makinedeki veya aksamındaki hasarın yeri ve büyüklüğü ile bunları takiben yapılması gereken bakım kararı belirl...

Control systems for main battle tanks become more important while the vehicles become more complex. Mobile vehicles in battlefield lead to the requirement of firing during the motion instead of pausing each time the main battle tank engages a target. This demand can be achieved by weapon control system that minimize the tank hull movement effects o...

We suggest a constrained [Formula: see text] control scheme for gyroscopic marine vehicle stabilization systems with output and control constraints. The [Formula: see text] performance is used to measure the roll angle reduction of the vessel relative to wave disturbances in regular beam seas. Time-domain constraints, representing requirements for...

Rotors with electromagnetic bearings are inherently unstable systems; hence feedback control is an integral part of their operation. While the rotor dynamics is linear and time-invariant at constant operation speed, electromagnetic bearing model is non-linear. Non-linear bearing dynamics can be linearized at an operating point using a constant bias...