Browsing USN Open Archive by Author "Sharma, Roshan"
Now showing items 1-20 of 43
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Advanced model-based control of B36:45 LNG engines based on data driven models using machine learning tools
Kvåle, Svein Roar (Master thesis, 2021)This work is about developing a data driven MPC control for optimization of fuel consumption by minimizing the heat rate of an LNG gas engine from Bergen Engines AS. The model is based on real life data from an installed ... -
Autonomous driving and machine learning with TurtleBot3 Waffle Pi mobile rover
Haugseter, Sindre (Master thesis, 2023)This project explores autonomous driving and machine learning with the TurtleBot3 Waffle Pi mobile rover in a custom-built racing rig. The project aims to develop an autonomous driving vehicle research and educational ... -
Comparison of control strategies for a 2 DOF helicopter
Sharma, Roshan; Pfeiffer, Carlos Fernando (Journal article; Peer reviewed, 2017)The two degrees of freedom (2-DOF) helicopter is an openloop unstable multi-variable process. Various control strategies can be applied to stabilize the system for tracking and regulation problems but not all control methods ... -
Covering the Gap Between Advanced Control Theory Design and Real Time Implementation Using Simulink
Pfeiffer, Carlos Fernando; Sharma, Roshan (Journal article; Peer reviewed, 2017)New developments in sensor technology and control actuators make it viable to monitor and regulate more process variables, providing an opportunity to apply advanced multivariable control techniques. Although modern control ... -
Daily production optimization of gas-lifted oil field with MPC framework
Timsina, Mahesh (Master thesis, 2024)The continuous increase in energy demand requires alternative solutions and sustainable energy production from the existing sources. Thus, the existing mature oil fields require optimization and gas injection is one option ... -
Development of a simulation platform and testing of a 5 degrees of freedom ReactorX 150 robotic arm manipulator
Lauritzen, Christian (Master thesis, 2023)The University of South-Eastern Norway recently purchased several units of the Trossen Robotics ReactorX-150 educational robots, enabling campus students’ access to some great robots for education and research purposes. ... -
Enhanced Power Capability of Generator Units for Increased Operational Security using NMPC
Øyvang, Thomas; Nøland, Jonas Kristiansen; Sharma, Roshan; Hegglid, Gunne John; Lie, Bernt (Peer reviewed; Journal article, 2019)The ever-increasing penetration of intermittent energy sources introduces new demanding operating regimes for the bulk power generation in the power grid. During a worst-case power system disturbance scenario, the generator ... -
Flood Management of Lake Toke: MPC Operation under Uncertainty
Menchacatorre, Itsaso; Sharma, Roshan; Furenes, Beathe; Lie, Bernt (Peer reviewed; Journal article, 2019)A deterministic reference tracking model predictive control (MPC) is in use at Skagerak Kraft for flood management of Lake Toke in Norway. An operational inflow estimate is used to predict the optimal gate opening at Dalsfos ... -
Formulation of Stochastic MPC to Balance Intermittent Solar Power with Hydro Power in Microgrid
Pandey, Madhusudhan; Winkler, Dietmar; Sharma, Roshan; Lie, Bernt (Peer reviewed; Journal article, 2021)In a microgrid with both intermittent and dispatchable generation, the intermittency caused by sources such as solar power and wind power can be balanced using dispatchable sources like hydro power. Both generation and ... -
Hybrid Model Predictive Control Scheme for Controlling Temperature in Building Under Uncertainties
Jeong, Changhun; Brastein, Ole Magnus; Skeie, Nils-Olav; Sharma, Roshan (Peer reviewed; Journal article, 2023)This paper presents a study on temperature control with a heater in a building using Model Predictive Control (MPC) with a focus on addressing two uncertainties: in model and the weather forecast. In previous works, a ... -
Implementation of simplified sequential stochastic model predictive control for operation of hydropower system under uncertainty
Jeong, Changhun; Furenes, Beathe; Sharma, Roshan (Peer reviewed; Journal article, 2023)Sequential stochastic model predictive control (MPC) is a control framework that sequentially employs two optimizers. The high-level optimizer generates a coarse long-term plan based on nominal uncertainty values, while ... -
Mechanistic Model of an Air Cushion Surge Tank for Hydro Power Plants
Pandey, Madhusudhan; Winkler, Dietmar; Vereide, Kaspar; Sharma, Roshan; Lie, Bernt (Peer reviewed; Journal article, 2022)Due to the increasing use of renewable energy sources, and to counter the effects of fossil fuels, renewable dispatchable hydro power can be used for balancing load and generation from intermittent sources (solar and wind). ... -
Model based control for run-of-river system. Part 1: Model implementation and tuning
Vytvytskyi, Liubomyr; Sharma, Roshan; Lie, Bernt (Journal article; Peer reviewed, 2015)Optimal operation and control of a run-of-river hydro power plant depends on good knowledge of the elements of the plant in the form of models. River reaches are often considered shallow channels with free surfaces. A ... -
Model based control for run-of-river system. Part 2: Comparison of control structures
Vytvytskyi, Liubomyr; Sharma, Roshan; Lie, Bernt (Journal article; Peer reviewed, 2015)Optimal operation and control of a run-of-river hydro power plant depend on good knowledge of the elements of the plant in the form of models. Both the control architecture of the system, i.e. the choice of inputs and ... -
Model Based Early Kick/Loss Detection and Attenuation with Topside Sensing in Managed Pressure Drilling
Jinasena, Asanthi; Holta, Haavard H. F.; Jondahl, Morten Hansen; Welahettige, Prasanna Kumara Welahetti; Aamo, Ole Morten; Sharma, Roshan; Viumdal, Håkon; Lie, Bernt (Peer reviewed; Journal article, 2020)Early kick/loss detection is a crucial part of safe well control, and it plays a major role in the reduction of risk and non-productive time in drilling. In conventional drilling, topside sensing is used for early kick/loss ... -
Model based flow measurement using venturi umes for return flow during drilling
Pirir, Ivan; Jinasena, Asanthi; Sharma, Roshan (Journal article; Peer reviewed, 2017)In an oil well drilling operation, a proper knowledge of the return fluid flowrate is necessary both for the stabilization of the bottom hole pressure of the well and also as a primary indication of a kick or loss. In ... -
Modeling and Analysis of Fluid Flow through A Non-Prismatic Open Channel with Application to Drilling
Jinasena, Asanthi; Ghaderi, Ali; Sharma, Roshan (Journal article; Peer reviewed, 2018)This paper presents the development and validation of a simplified dynamic model of a Venturi channel. The existing dynamic models on open channels are based on the open channel flow principles, which are the shallow water ... -
Modeling and Simulation of Triclosan Kinetics and Distribution in Humans Using a PBPK Model
Maharjan, Samee; Sharma, Roshan; Husøy, Trine; Dirven, Hubert; Andreassen, Monica; Lie, Bernt (Journal article; Peer reviewed, 2015-11-25)Personal care products (PCPs) such as soaps, perfumes, toothpastes, lotions, etc. contain various chemicals. Triclosan (TCS) is widely used as an antibacterial additive in PCPs. Traces of TCS are found in human plasma and ... -
Modeling for control of run-of-river power plant Grønvollsfoss
Vytvytskyi, Liubomyr; Sharma, Roshan; Granstrøm, Ingunn; Lie, Bernt (Journal article; Peer reviewed, 2015-11-25)Design of optimal operation and control of a run-of-river hydro power plant depends on good models for the elements of the plant. River reaches are often considered to be shallow channels with free surface flow. A typical ... -
MPC Operation with Improved Optimal Control Problem at Dalsfoss Power Plant
Jeong, Changun; Furenes, Beathe; Sharma, Roshan (Peer reviewed; Journal article, 2021)The operational conditions at the Dalsfoss power station are complicated due to many requirements such as environmental regulations and safety constraints. Model predictive control (MPC) has been in use at this power station ...