Blar i Department of Engineering Sciences på utgivelsesdato
Viser treff 41-60 av 1060
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Control design for load reduction on wind turbine system
(Master thesis, 2011)The wind power industry is currently the fastest growing renewable energy sector throughout the world. This requires the technical expertise among engineers and researchers in the wind energy field to find technical solutions ... -
Mathematical modeling of a vehicle crash test based on elasto-plastic unloading scenarios of spring-mass models
(Journal article; Peer reviewed, 2011)This paper investigates the usability of spring which exhibit nonlinear force-deflection characteristic in the area of mathematical modeling of vehicle crash. We present a method which allows us to obtain parameters of the ... -
Signal analysis and performance evaluation of a vehicle crash test with a fixed safety barrier based on Haar wavelets
(Journal article; Peer reviewed, 2011)This paper deals with the wavelet-based performance analysis of the safety barrier for use in a full-scale test. The test involves a vehicle, a Ford Fiesta, which strikes the safety barrier at a prescribed angle and speed. ... -
The performance investigation of viscoelastic hybrid models in vehicle crash event representation
(Chapter; Peer reviewed, 2011)This paper presents application of physical models composed of springs, dampers and masses joined together in various arrangements to simulation of a real car collision with a rigid pole. Equations of motion of those systems ... -
LQG control design for balancing an inverted pendulum mobile robot
(Journal article; Peer reviewed, 2011)The objective of this paper is to design linear quadratic controllers for a system with an inverted pendulum on a mobile robot. To this goal, it has to be determined which control strategy delivers better performance with ... -
Development of a model-based control system for the Gantry-Tau parallel kinematic machine
(Master thesis, 2011)The purpose of this thesis was to develop a control system for the Gantry-Tau Parallel Kinematic Machine, based in the motion behaviour of the robot, verification stages of the model and testing with an actual prototype. The ... -
Vibration control of a base-isolated building using wavelets
(Chapter; Peer reviewed, 2011)This paper proposes a numerical approach for finding an optimal control based on wavelet functions for vibration reduction of a base-isolated building subjected to actual earthquakes. The objective is two-fold: (1) to find ... -
Robust adaptive H∞ synchronization of master-slave systems with discrete and distributed time-varying delays and nonlinear perturbations
(Chapter; Peer reviewed, 2011)This paper establishes an adaptive synchronization problem for the master and slave structure of linear systems with nonlinear perturbations and mixed time-varying delays, where the mixed delays comprise different discrete ... -
Mathematical modeling and parameters estimation of a car crash using data-based regressive model approach
(Journal article; Peer reviewed, 2011)n this paper we present the application of regressive models to simulation of car-to-pole impacts. Three models were investigated: RARMAX, ARMAX and AR. Their suitability to estimate physical system parameters as well as ... -
New approach to produce special purpose visual aid glasses : a custom designed 5-axis mill
(Master thesis, 2011)The thesis problem formulation is given by the company ProVista. ProVistas area of expertise is mainly the rehabilitation of visually impaired. This includes research, training of opticians and sale of supporting materials ... -
Hardware-in-the-loop implementation for an active heave compensated drawworks
(Journal article; Peer reviewed, 2011)This paper presents the setup and running of a hardware-in-loop (HIL) simulation for an active heave compensated (AHC) draw-works. A simulation model of the draw-works is executed on a PC to simulate the AHC draw-works ... -
Robust delay-dependent H∞ control of uncertain time-delay systems with mixed neutral, discrete, and distributed time-delays and Markovian switching parameters
(Journal article; Peer reviewed, 2011)The problem of robust mode-dependent delayed state feedback H ∞ control is investigated for a class of uncertain time-delay systems with Markovian switching parameters and mixed discrete, neutral, and distributed delays. ... -
Robust synchronization and fault detection of uncertain master-slave systems with mixed time-varying delays and nonlinear perturbations
(Journal article; Peer reviewed, 2011)In this paper, the problem of robust synchronization and fault detection for a class of master-slave systems subjected to some nonlinear perturbations and mixed neutral and discrete time-varying delays is investigated based ... -
A computational method to optimal control of a wind turbine system using wavelets
(Chapter; Peer reviewed, 2011)This paper deals with a computational optimization approach to the problem of state-feedback control design for a wind turbine system. The first step of the study is to develop a reduced order model for the system by ... -
Modeling and simulation of a High Pressure Roller Crusher for silicon carbide production
(Chapter; Peer reviewed, 2011)This paper describes the modeling and simulation of High Pressure Roller Crusher (HPRC) for the production of silicon cabide grains. The study is to make a model for simulation of a High Pressure Roller Crusher. A High ... -
Fuzzy reliable tracking control for flexible air-breathing hypersonic vehicles
(Journal article; Peer reviewed, 2011)In this paper, we present a fuzzy reliable tracking control design method for flexible air-breathing hypersonic vehicles (FAHVs) subject to disturbances and possible sensor/actuator failures. This problem is challenging ... -
Modeling, simulation, and testing of constant tension system on winch
(Master thesis, 2011)Here we present a dynamical simulation of a hydraulic constant tension [CT] system in SimulationX. The purpose of the simulation is to check the similarity of the simulated system and the real system. The real system is ... -
Influence of unloading modes of spring-mass-damper models on vehicle to pole collision simulation results
(Chapter; Peer reviewed, 2011)Our intention, in this brief note, is to investigate what influence the viscoelastic models' unloading properties have on models' accuracy of representing vehicle crash event. Two types of simple spring-mass-damper systems ... -
The performance investigation of viscoelastic hybrid models in vehicle crash event representation
(Chapter; Peer reviewed, 2011)This paper presents application of physical models composed of springs, dampers and masses joined together in various arrangements to simulation of a real car collision with a rigid pole. Equations of motion of those systems ... -
Robust tool point control for offshore knuckle boom crane
(Chapter; Peer reviewed, 2011)This paper considers the design of an H∞ controller for tool point control of a hydraulically actuated knuckle boom crane. The paper describes the modelling of the crane's mechanical and hydraulic systems and a disturbance ...