An Approach for System Identification in Unmanned Surface Vehicles

2017-10-21
Erunsal, Izzet Kagan
Ahiska, Kenan
Kumru, Murat
Leblebicioğlu, Mehmet Kemal
In this study, a system identification methodology is introduced to determine the model parameters of unmanned surface vehicles. The proposed identification scheme is based on sequencing the experiments according to their capabilities to identify the model parameters. In each experiment, the parameters to be found are updated and the results are validated before ascertaining the final value. A procedure to complete the identification work in an experiment, namely the required post-processing, the optimization routines, the cost function evaluations are defined and discussed. The final parameter set is validated in random motion tests with rich motion content. It has been observed that the proposed method elicits a parameter identification with remarkable success.

Suggestions

A Survey on Tactical Control Algorithms for Path Tracking Unmanned Surface Vehicles
Kumru, Murat; Leblebicioğlu, Mehmet Kemal (2016-11-15)
In this study, a survey on control allocation algorithms in tactical level control for path tracking unmanned surface vehicles (USV) is conducted. The strategic goal in the path tracking problem is to assist navigation solution of an unmanned underwater vehicle (UUV). USV with the help of its onboard acoustic sensors, tracks UUV according to constant bearing guidance rule. The survey on tactical controllers comprises comparisons of tracking performances of USVs under proportional-integral-derivative, pole p...
VERIFICATION OF A FINITE ELEMENT MODEL OF AN UNMANNED AERIAL VEHICLE WING TORQUE BOX VIA EXPERIMENTAL MODAL TESTING
Unlusoy, Levent; Şahin, Melin; Yaman, Yavuz (2012-07-04)
In this study, the detailed finite element model (FEM) of an unmanned aerial vehicle wing torque box was verified by the experimental modal testing. During the computational studies the free-free boundary conditions were used and the natural frequencies and mode-shapes of the structure were obtained by using the MSC Software. The results were then compared with the experimentally obtained resonance frequencies and mode-shapes. It was observed that the frequencies were in close agreement having an error with...
Experimental test of the acoustic-based navigation and system identification of an unmanned underwater survey vehicle (SAGA)
KARTAL, SEDA; Leblebicioğlu, Mehmet Kemal; Ege, Emre (2018-05-01)
In this study, a nonlinear mathematical model for an unmanned underwater survey vehicle (SAGA) is obtained. The structure of the mathematical model of the vehicle comes from a Newton-Euler formulation. The three-dimensional motion is realized by a suitable combination of right, left and vertical thrusters. The navigation problem is solved by a combination of the inertial navigation system and acoustic-based measurements, which are integrated to obtain more accurate vehicle navigation data. In addition, a ma...
A new contact & slip model for tracked vehicle transient dynamics on hard ground
Ozdemir, Mehmet Nuri; Kilic, Varlik; Ünlüsoy, Yavuz Samim (2017-10-01)
This study presents a new general transient contact and slip model for tracked vehicles on hard ground which is simple, accurate, and in agreement with the test results to a satisfactory level. Simulating zero track speed instances become possible with the new contact/shear model which is the major proposed improvement in addition to more accurate results for transient steering and tractive inputs. The model represents a general tracked vehicle having rear or front sprockets, with parameters for center of g...
Modelling of an articulated flying body and control system design
Güzelcan, Burçin Tutku; Yazıcıoğlu, Yiğit; Özgören, Mustafa Kemal; Department of Mechanical Engineering (2022-12-5)
This study presents the conceptual design of an articulated coaxial rotor Unmanned Air Vehicle (UAV) with three-dimensional dynamical models and a control strategy. Conventional rotary-wing aircrafts operate maneuvers via swashplates which is a complex mechanism adding bulky elements to the aircrafts. While designing light weight UAVs, there appears a need for less complex and compact mechanisms for maneuverability rather than swashplates. There are different methods and mechanisms to acquire maneuvering wi...
Citation Formats
I. K. Erunsal, K. Ahiska, M. Kumru, and M. K. Leblebicioğlu, “An Approach for System Identification in Unmanned Surface Vehicles,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54275.