Active Classification of Moving Targets With Learned Control Policies

In this paper, we consider the problem where a drone has to collect semantic information to classify multiple moving targets. In particular, we address the challenge of computing control inputs that move the drone to informative viewpoints, position and orientation, when the information is extracted using a “black-box” classifier, e.g., a deep...

Belief Control Barrier Functions for Risk-Aware Control

Ensuring safety in real-world robotic systems is often challenging due to unmodeled disturbances and noisy sensors. To account for such stochastic uncertainties, many robotic systems leverage probabilistic state estimators such as Kalman filters to obtain a robot's belief, i.e. a probability distribution over possible states. We propose...

Role of Multimodal Learning Systems in Technology-Enhanced Learning (TEL): A Scoping Review

Technology-enhanced learning systems, specifically multimodal learning technologies, use sensors to collect data from multiple modalities to provide personalized learning support beyond traditional learning settings. However, many studies surrounding such multimodal learning systems mostly focus on technical aspects concerning data collection...

Sensor-Based Sorting of Post-Consumer Plastic Packaging: Analyzing False Calls of Near-Infrared Sensor Systems

Starting from the 1950s, plastic has found its way into many aspects of life; from packaging to transportation and construction. The annual global plastic production was estimated to be 330 million metric tons in 2017 and will be doubled within 20 years if the current growth rate persists. In Europe, packaging accounts for 40% of the annual...

Non-overlapping coverage in random feeding

Can random deposition create dense non-overlapping material feeding? The question is very fundamental for the research of particle packing, while the answer is of great importance for any industrial process that applies single object operation. To gain an insight into this issue, we studied the overlap problems of convex particles in the...

Detection of factors that determine the quality of industrial minerals: An infrared sensor-based approach for mining and process control

Industrial minerals are essential to human activity. The products derived from them make an integral part of a wide range of materials that are ubiquitously present in our daily lives. The performance and attributes of these materials depend significantly on the properties and quality of the industrial minerals and the products generated from...

Quadrotor fault-tolerant incremental nonsingular terminal sliding mode control

This paper proposes incremental nonsingular terminal sliding mode control for a class of multi-input and multi-output nonlinear systems considering model uncertainties, external disturbances, and sudden actuator faults. This method is free from singularity because it does not involve any negative fractional power. The convergence time in both...

Ore–Waste Discrimination in Epithermal Deposits Using Near-Infrared to Short-Wavelength Infrared (NIR-SWIR) Hyperspectral Imagery

Near-infrared (NIR) and short-wavelength infrared (SWIR) hyperspectral imagery can be used to detect certain alteration minerals. At epithermal deposits, the formation of alteration minerals is, in theory, related to the mineralisation of gold and silver. In order to provide foundations for developing sensor-based sorting applications at a...

Characterizing the valuable content of Au ores from the Cortez Hills underground deposit using digital RGB images

Sensor Based Sorting can decrease the amount of material processed in the subsequent processing steps, by separating the valuable material from the invaluable material, and therefore potentially reducing costs in those subsequent steps. For sensor based sorting to be effective, a strong relation needs to be present between the properties...

Self-powered Wireless Current Sensor: Proof of concept: continuous current measurement and energy extraction using one Current Transformer

Due to changes in the electricity grid, and the awareness of the energy consumption, management of energy flows is an important business. For the management of energy flows, detailed information about the current flow is needed. For the integration of current sensors in the grid there is a need for non-invasive current sensors that are easy to...

Applicability of near-infrared hyperspectral imagery (NIR-HI) for sensor based sorting of an epithermal Au-Ag ore

In the presented study test work was performed with near-infrared hyperspectral imagery (NIR-HI) on 36 ore samples from a South-American epithermal Au-Ag mine. The aim of the test work was to investigate if NIR-HI provides information about the alteration mineralogy of samples that can be used to predict their economic value. Mineral...

Fault-Tolerant Flight Control with Sensor-Based Nonlinear Dynamic Inversion

A worldwide civil aviation accident survey for the period of 2002 till 2011, conducted by the CAA-UK shows that in this time period nearly 40% of all the aircraft accidents involved loss of control. Despite the fatal outcomes, reconfigurable flight control might have been able to recover the aircraft by efficiently utilizing the remaining...

The use of sensor derived data in optimization along the Mine-Value-Chain

Sensor derived data can add value across the mining operating chain ranging from resource definition, extraction, pre-concentration, mineral process monitoring and assessment of product quality. Most documented studies on sensors in mining focus on specific technologies for specific applications. These studies do not take into account different...

Investigation of Practical Flight Control Systems for Small Aircraft

Personal air transportation utilizing small aircraft is a market that is expected to grow significantly in the near future. However, seventy times more accidents occur in this segment as compared with the commercial aviation sector. The majority of these accidents is related to handling and control problems. In commercial aviation, Fly-By-Wire ...

Advanced Flight Control Design and Evaluation: An application of time delayed Incremental Backstepping

The sensor-based approach of Incremental Backstepping is applied to flight control law design in this research project. It allows the usage of the same control law on different types of aircraft without the need for redesign. Apart from full state availability, the derivation of Incremental Backstepping assumes instantaneous control action. Due...