measurement & control

KEY-enabling TECHNOLOGY

Measurement, control and analysis are essential for acquiring knowledge from numerical and experimental studies. This programme provides the tools and techniques needed to gain insight into full-scale and model-scale physics.

COLLECT DATA TO INCREASE KNOWLEDGE

The current trends in measurement and control (M&C) technologies for hydrodynamic testing are towards the application of new sensor technologies, data fusion, vision based measurements and the interaction with control systems. In addition, the application of Model-in-the-Loop (MIL) tests is growing and enabling complex experiments with a hybrid solution consisting of physical and simulated system parts.
Mathematical analysis and the application of data science is used to gain information from large amounts of measured data. This information can then be used to help research programmes improve their knowledge of theoretical models, control system, numerical tools and marine designs.

Contact

Contact person photo

Haite van der Schaaf

Senior Project Manager

SUB PROGRAMMES

waves & flows

Measurements of waves and flows are performed to serve different ambitions of the research programmes. Measurement of spatial wave fields in combination with forces and pressures on the hull (Waves & Impacts) Measurement of wave kinematics (Waves & Impacts) Gather reliable flow and corresponding pressure distribution data for CFD validation Additionally, measuring and controlling water quality is crucial to study the effect of water quality (free and dissolved gas) on cavitation, and wave impacts.

waves & flows

Measurements of waves and flows are performed to serve different ambitions of the research programmes. Measurement of spatial wave fields in combination with forces and pressures on the hull (Waves & Impacts) Measurement of wave kinematics (Waves & Impacts) Gather reliable flow and corresponding pressure distribution data for CFD validation Additionally, measuring and controlling water quality is crucial to study the effect of water quality (free and dissolved gas) on cavitation, and wave impacts.

LOADS & BEHAVIOUR

Behaviour of structures is measured in terms of motions, vibrations, deformations, cavitation and noise. Loads on structures in terms of forces, moments and pressures are a result of environmental factors and behaviour of the structural parts. This subprogramme focuses on the improvement of measurement tools and techniques.

LOADS & BEHAVIOUR

Behaviour of structures is measured in terms of motions, vibrations, deformations, cavitation and noise. Loads on structures in terms of forces, moments and pressures are a result of environmental factors and behaviour of the structural parts. This subprogramme focuses on the improvement of measurement tools and techniques.

HYBRID SOLUTIONS

Hybrid measurement systems—combining various technologies—can provide added value to results through synergy between their components. A well-known application is the combination of GPS and inertial sensor data for navigation purposes. Herein sensor fusion and real-time analysis play a dominant role.

HYBRID SOLUTIONS

Hybrid measurement systems—combining various technologies—can provide added value to results through synergy between their components. A well-known application is the combination of GPS and inertial sensor data for navigation purposes. Herein sensor fusion and real-time analysis play a dominant role.

Control

Control systems are actively used in marine applications to increase operational range, comfort and minimise energy use. To understand the total behaviour of the system, understanding the control is an integral part. The combination of maritime knowledge and control theory allows, for example, to predict the limits of performance and requirements on actuators. We have the facilities to analyse and design on physical (scaled) applications or with numerical models.

Control

Control systems are actively used in marine applications to increase operational range, comfort and minimise energy use. To understand the total behaviour of the system, understanding the control is an integral part. The combination of maritime knowledge and control theory allows, for example, to predict the limits of performance and requirements on actuators. We have the facilities to analyse and design on physical (scaled) applications or with numerical models.

MEASUREMENT QUALITY

This sub-programme is focused on quantifying the quality of the measurement and analysis process. Uncertainties of calibrations, measurement signal characteristics and ambient conditions will be determined and quality control ensures that these values will be attained.

MEASUREMENT QUALITY

This sub-programme is focused on quantifying the quality of the measurement and analysis process. Uncertainties of calibrations, measurement signal characteristics and ambient conditions will be determined and quality control ensures that these values will be attained.
STEREO PARTICLE IMAGE VELOCIMETRY
PIV is an advanced, optical measuring technique for obtaining 3D velocity information in a plane. The flow measurement with PIV is based on the measurements of the displacement (Δx) of a particle in a target plane between two successive light pulses with time delay (Δt). The flow is seeded with particles and the target plane is illuminated with a laser light sheet. Then the particle positions are recorded by two digital cameras.
WAVE BUOY MEASUREMENTS ON A HEXAPOD