Browsing NTNU Open by Journals "Mechanical systems and signal processing"
Now showing items 1-12 of 12
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Adaptive vibration attenuation with globally convergent parameter estimation
(Journal article; Peer reviewed, 2019)Parameter estimation problems can be nonlinear, even if the dynamics are expressed by a linear model. The extended Kalman filter (EKF), even though it is one of the most popular nonlinear estimation techniques, may not ... -
Data-driven simultaneous identification of the 6DOF dynamic model and wave load for a ship in waves
(Peer reviewed; Journal article, 2023)In marine operations, the performance of model-based automatic control design and decision support systems highly relies on the accuracy of the representative mathematical models. Model fidelity can be crucial for safe ... -
Estimation of the full-field dynamic response of a floating bridge using Kalman-type filtering algorithms
(Journal article; Peer reviewed, 2018)Numerical predictions of the dynamic response of complex structures are often uncertain due to uncertainties inherited from the assumed load effects. Inverse methods can estimate the true dynamic response of a structure ... -
Experimental investigation on the effect off near walls on the eigen frequency of a low specific speed francis runner
(Journal article; Peer reviewed, 2019)The importance to correctly predict the natural frequency of a turbine runner have been demonstrated several times. It is now common practice to include the added mass effect of the surrounding water when calculating the ... -
Full-scale identification of the wave forces exerted on a floating bridge using inverse methods and directional wave spectrum estimation
(Journal article; Peer reviewed, 2019)The dynamic behaviour of long-span bridges is governed by stochastic loads from typically ambient excitation sources. In real life, these loads cannot be measured directly at full scale. However, inverse methods can be ... -
Integrated GNSS/IMU Hub Motion Estimator for Offshore Wind Turbine Blade Installation
(Journal article; Peer reviewed, 2019)Offshore wind turbines (OWTs) have become increasingly popular for their ability to harvest clean offshore wind energy. Bottom-fixed foundations are the most used foundation type. Because of its large diameter, the foundation ... -
Investigation of the Unsteady Pressure Pulsations in the Prototype Francis Turbines -Part 1: Steady State Operating Conditions
(Journal article, 2018)Hydropower is one of the most reliable renewable sources of electricity generation. With high efficiency and good regulating capacity, hydropower has the ability to meet rapid changes in power demand. Large investments in ... -
Modelling and identification for control of gas bearings
(Journal article; Peer reviewed, 2015)Gas bearings are popular for their high speed capabilities, low friction and clean operation, but suffer from poor damping, which poses challenges for safe operation in presence of disturbances Feedback control can achieve ... -
Online condition monitoring of floating wind turbines drivetrain by means of digital twin
(Journal article; Peer reviewed, 2021)This paper presents a digital twin (DT) condition monitoring approach for drivetrains on floating offshore wind turbines. Digital twin in this context consists of torsional dynamic model, online measurements and fatigue ... -
Probabilistic autoencoder-based bridge damage assessment using train-induced responses
(Peer reviewed; Journal article, 2024)Structural health monitoring (SHM) systems have been increasingly employed to continually assess the current state of bridges. However, the vast amounts of sensor data generated by SHM systems, along with constantly changing ... -
A robust line-tracking photogrammetry method for uplift measurements of railway catenary systems in noisy backgrounds
(Peer reviewed; Journal article, 2020)For electrical railways, contact wires are used to ensure stable and continuous power supply to trains operating on the infrastructure. One crucial design parameter used to control the catenary design is the vertical ... -
A spatial coupling model to study dynamic performance of pantograph-catenary with vehicle-track excitation
(Peer reviewed; Journal article, 2021)In the high-speed railway industry, the pantograph-catenary system is responsible to provide continuous electric energy for the high-speed train. The pantograph-catenary system suffers multiple impacts from the complex ...