Browsing NTNU Open by Author "Hatledal, Lars Ivar"
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A Benchmarking Framework for Control Methods of Maritime Cranes Based on the Functional Mockup Interface
Sanfilippo, Filippo; Hatledal, Lars Ivar; Pettersen, Kristin Ytterstad; Zhang, Houxiang (Journal article, 2017)A benchmark framework for advanced control methods of maritime cranes is presented based on the use of the functional mockup interface. The system integrates different manipulator models, all the corresponding hydraulic ... -
A Language and Platform Independent Co-Simulation Framework Based on the Functional Mock-Up Interface
Hatledal, Lars Ivar; Styve, Arne; Hovland, Geir; Zhang, Houxiang (Journal article; Peer reviewed, 2019)The main goal of the Functional Mock-up Interface (FMI) standard is to allow the sharing of simulation models across tools. To accomplish this, FMI relies on a combination of XML-files and compiled C-code packaged in a zip ... -
A Software Architecture for Simulation and Visualisation based on the Functional Mock-up Interface and Web Technologies
Hatledal, Lars Ivar; Schaathun, Hans Georg; Zhang, Houxiang (Chapter, 2015)This paper presents a software architecture for a collaborative virtual environment (CVE) for simulation and visualisation based on the Functional Mock-up Interface (FMI) for co-simulation and web technologies. FMI has ... -
A Voxel-Based Numerical Method for Computing and Visualising the Workspace of Offshore Cranes
Hatledal, Lars Ivar; Sanfilippo, Filippo; Chu, Yingguang; Zhang, Houxiang (Chapter; Peer reviewed, 2015)Workspace computation and visualisation is one of the most important criteria in offshore crane design in terms of geometry dimensioning, installation feasibility and operational performance evaluation. This paper presents ... -
An Object-Oriented Modeling Approach to Virtual Prototyping of Marine Operation Systems Based on Functional Mock-Up Interface Co-Simulation
Chu, Yingguang; Hatledal, Lars Ivar; Æsøy, Vilmar; Ehlers, Sören; Zhang, Houxiang (Journal article; Peer reviewed, 2018)This paper presents an object-oriented modeling (OOM) approach to model development of marine operation systems, specifically the hydraulic systems of marine cranes. Benefited from the rapid development of computation ... -
Co-simulation as a Fundamental Technology for Twin Ships
Hatledal, Lars Ivar; Skulstad, Robert; Li, Guoyuan; Styve, Arne; Zhang, Houxiang (Peer reviewed; Journal article, 2020)The concept of digital twins, characterized by the high fidelity with which they mimic their physical counterpart, provide potential benefits for the next generation of advanced ships. It allows analysis of data and ... -
Controlling Kuka Industrial Robots : Flexible Communication Interface JOpenShowVar.
Sanfilippo, Filippo; Hatledal, Lars Ivar; Zhang, Houxiang; Fago, Massimiliano; Pettersen, Kristin Ytterstad (Journal article, 2015)JOpenShowVar is a Java open-source cross-platform communication interface to Kuka industrial robots. This novel interface allows for read-write use of the controlled manipulator variables and data structures. JOpenShowVar, ... -
Coupling of dynamic reaction forces of a heavy load crane and ship motion responses in waves
Chu, Yingguang; Li, Guoyuan; Hatledal, Lars Ivar; Holmeset, Finn Tore; Zhang, Houxiang (Peer reviewed; Journal article, 2021)The conventional approach to dynamic analysis of ship motion response with shipboard operation equipment is usually done by establishing combined equations of motion of the multi-body system. The weakness of such methods ... -
Enabling Python Driven Co-Simulation Models with PythonFMU
Hatledal, Lars Ivar; Collonval, Frederic; Zhang, Houxiang (Chapter, 2020)This paper introduces PythonFMU, an easy to use framework for exporting Python 3.x code as cosimulation compatible models compliant with version 2.0 of the Functional Mock-up Interface (FMI). The framework consists of a ... -
A Flexible Network Interface for a Real-time Simulation Framework
Hatledal, Lars Ivar (Master thesis, 2017)This thesis presents a flexible network interface for the real-time simulation framework, Vico. In particular, the interface allows remote clients to connect to simulations over the network using a variety of transport ... -
FMI4j: A Software Package for working with Functional Mock-up Units on the Java Virtual Machine
Hatledal, Lars Ivar; Zhang, Houxiang; Styve, Arne; Hovland, Geir (Chapter, 2018)This paper introduces FMI4j, a software package for working with Functional Mock-up Units (FMUs) on the Java Virtual Machine (JVM). FMI4j is written in Kotlin, which is 100% interoperable with Java, and consists of programming ... -
FMU-proxy: A Framework for Distributed Access to Functional Mock-up Units
Hatledal, Lars Ivar; Zhang, Houxiang; Styve, Arne; Hovland, Geir (Chapter, 2019)The main goal of the Functional Mock-up Interface (FMI) standard is to allow simulation models to be shared across tools. To accomplish this, FMI relies on a combination of XML-files and compiled C-code packaged in a zip ... -
Incorporating Approximate Dynamics Into Data-Driven Calibrator: A Representative Model for Ship Maneuvering Prediction
Wang, Tongtong; Li, Guoyuan; Hatledal, Lars Ivar; Skulstad, Robert; Æsøy, Vilmar; Zhang, Houxiang (Peer reviewed; Journal article, 2021)High-fidelity models capable of accurately predicting ship motion are critical for promoting innovation and efficiency in the maritime industry. However, creating an advanced model that comprehensively represents the system ... -
A multiple-output hybrid ship trajectory predictor with consideration for future command assumption
Kanazawa, Motoyasu; Skulstad, Robert; Li, Guoyuan; Hatledal, Lars Ivar; Zhang, Houxiang (Peer reviewed; Journal article, 2021)Onboard sensors contribute to data-driven understanding of complex and nonlinear ship dynamics in real time. By using sensors, precise ship trajectory prediction plays a key role in intelligent collision avoidance. A hybrid ... -
Numerical Study for a Catamaran Gripper-Monopile Mechanism of a Novel Offshore Wind Turbine Assembly Installation Procedure
Hatledal, Lars Ivar; Zhang, Houxiang; Halse, Karl Henning; Hildre, Hans Petter (Chapter; Peer reviewed, 2017)Current methods for installation of offshore wind turbines are all sensitive to the weather conditions and the present cost level of offshore wind power is more than twice the cost of land-based units, increasing with water ... -
Protocols and Standard for Simulation Co-Simulation – For demanding maritime operations
Hatledal, Lars Ivar (Doctoral theses at NTNU;2021:81, Doctoral thesis, 2021)There is a strong demand for innovation and efficiency within operations, life cycle services, and design of maritime systems. Modern vessels operate increasingly autonomously through strongly interacting sub-systems. These ... -
Redesigning the Point Cloud Acquisition for Sort™
Tynes, Odd Arne Skjeret; Furnes, Pål-André; Melaas, Marius Høyer (Bachelor thesis, 2022)Denne bacheloroppgaven er en detaljert forklaring på hvordan bachelorgruppen gikk frem for å redesigne punktsky-anskaffelsen for Solwr's Sort™, en pallsorteringsmaskin designet for logistikkbransjen. Den nåværende ... -
Vico: An entity-component-system based co-simulation framework
Hatledal, Lars Ivar; Chu, Yingguang; Styve, Arne; Zhang, Houxiang (Peer reviewed; Journal article, 2020)This paper introduces a novel co-simulation framework running on the Java Virtual Machine built on a software architecture known as the Entity-Component-System. Popularised by games, this architecture favours composition ... -
Virtual prototyping for maritime crane design and operations
Chu, Yingguang; Hatledal, Lars Ivar; Zhang, Houxiang; Æsøy, Vilmar; Ehlers, Sören (Journal article; Peer reviewed, 2018)This paper presents the implementation of the virtual prototyping system for maritime crane design and operations. The study is designed to bridge the following gaps in maritime crane system simulations. First, the virtual ... -
Virtual prototyping system for maritime crane design and operation based on functional mock-up interface
Chu, Yingguang; Hatledal, Lars Ivar; Sanfilippo, Filippo; Æsøy, Vilmar; Zhang, Houxiang; Schaathun, Hans Georg (Chapter; Peer reviewed, 2015)This paper presents the framework of a virtual prototyping system for the design and simulation of maritime crane operations. By combining the rapid-prototyping approach with the concept of interchangeable interfaces, ...