Modeling and stabilization control of a main battle tank

Karayumak, Türker
In this study, a parametric model for a main battle tank electric gun turret drive system stabilization controller has been developed. Main scope was the study of the muzzle deviation due to barrel flexibility. Traverse and elevation dynamics has been modeled to include the drive-line and barrel flexibilities. Order of the models has been kept large enough to cover the frequencies dominant in the interest scope but at the same time low enough to create a parametric model which can be used in real-time fire control computers. Therefore a 5-dof elevation and a 7-dof traverse models have been implemented. These models have been used to design a classical feedback and feedforward controllers which performed good enough to meet 0.5mrad stabilization accuracies. After satisfactory results have been obtained from the stabilization controller, a special coincidence algorithm has been implemented by time-series analysis of the disturbance signal which is constantly being measured by the feedforward gyro. Necessity of predicting the future muzzle angular orientation due to the latency in fire is discussed and by using autoregressive modeling of the disturbance signal, future values of the disturbance signal has been entered into the observer model. The prediction horizon has been set to the time delay value between the trigger is pulled by the gunner and the ammunition exit from the muzzle. By checking the future coincidence within a very narrow windowing (0.05mrad) a 100% first round hit probability in theory has been achieved. This is assured since the coincidence inhibited the fire signals which were to miss the aiming point with a large error.


Development of a DSP-FPGA-based resolver-to-digital converter for stabilized gun platforms
Zengin, Yasin; Erkmen, İsmet; Department of Electrical and Electronics Engineering (2010)
Resolver, due to its reliability and durability, has been used for the aim of shaft position sensing of military rotary systems such as tank turrets and gun stabilization platforms for decades. Ready-to-use resolver-to-digital converter integrated circuits which convert the resolver signals into position and speed measurements are utilized in servo systems most commonly. However, the ready-to-use integrated circuits increase the dependency of the servo system to hardware components which in turn decrease th...
Aerodynamic and structural design and analysis of an electric powered mini UAV
Demircan, Alpay; Kayran, Altan; Department of Aerospace Engineering (2016)
The aim of this study is to describe the aerodynamic and structural design of an electric powered portable Mini UAV. Conceptual design, structural design and analysis of the wing and detail design phases of the UAV are presented in the study. Fixed wing mini UAV configuration with fixed – pitch propeller has been chosen for the design. In order to provide multi-mission capability, payload of the UAV is designed as a replaceable mission compartment. System requirements and mission profiles of the airplane ar...
Genetic Algorithm based aerodynamic shape optimization tool for wind turbine blades and its implementation to helicopter blades
Polat, Özge; Sezer-uzol, Nilay; Tuncer, İsmail Hakkı (2014-01-01)
This study presents a methodology first built up for the aerodynamic shape optimization for wind turbine rotors and its modified version for a helicopter rotor in hover. The Genetic Algorithm (GA) coupled with an in-house Blade Element Momentum (BEM) tool is used in the design optimization process. The wind turbine blade optimization studies are performed for maximizing the power production at a given wind speed, rotor speed and rotor diameter, while for the helicopter blade optimization in hover, figure of...
Structural Analysis of an Unconventional Hybrid Control Surface of a Morphing Wing
Arslan, Pınar; Uğur, Kalkan; Harun, Tıraş; İlhan Ozan, Tunçöz; Yosheph, Yang; Gürses, Ercan; Şahin, Melin; Özgen, Serkan; Yaman, Yavuz (2014-11-03)
In this study, design and analysis of a new unconventional hybrid trailing edge control surface of an unmanned aerial vehicle (UAV) wing is presented. The hybrid trailing edge control surface is composed of a compliant material and a composite material and designed by using CATIA® V5-6R2012 package program. The stiffness difference between compliant and composite parts provides the deflection of control surface and an effective camber. The required number and the location of servo motors needed to deflect c...
Cascaded proxy-based sliding mode control enhanced with disturbance observer for the stabilization and control of a gun-turret platform/
Çandır, Ercan; Erkmen, Aydan Müşerref; Department of Electrical and Electronics Engineering (2014)
Stabilization and tracking is two of the most important properties of today’s modern gun turret platforms mounted on the mobile land vehicles. Servo control of such gunturret platforms is a very challenging issue due to the non-linearities of the system, the external disturbances resulting from the motion of the vehicle and varying operation conditions. In this thesis, a cascaded proxy-based controller with additional disturbance observer is developed as a solution to this control problem and to obtain high...
Citation Formats
T. Karayumak, “Modeling and stabilization control of a main battle tank,” Ph.D. - Doctoral Program, Middle East Technical University, 2011.