Luca Pugi

Luca Pugi
University of Florence | UNIFI

Professor

About

325
Publications
76,633
Reads
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3,710
Citations
Additional affiliations
January 2000 - present
University of Florence
Position
  • Researcher

Publications

Publications (325)
Article
Full-text available
Unmanned aerial vehicle (UAV) technology has recently experienced increasing development, leading to the creation of a wide variety of autonomous solutions. In this paper, a guidance strategy for straight and orbital paths following fixed-wing small UAVs is presented. The proposed guidance algorithm is based on a reference vector field as desired,...
Preprint
Full-text available
Unmanned Aerial Vehicle (UAV) technology has recently experienced increasing development, leading to the creation of a wide variety of autonomous solutions. In this paper a guidance strategy for straight and orbital path following of fixed-wing small UAV is presented. The proposed guidance algorithm is based on a reference Vector Field as desired 1...
Conference Paper
Full-text available
In this paper we propose a new trajectory planning algorithm for an underactuated soft robot based on dielectric elastomer actuators. The planning of the dynamic trajectories is addressed by accounting for the constraints imposed by the underactuated nature of the robot, the physical limits of its operational space, as well as control input saturat...
Article
The safety of rail transport is affected by the condition and integrity of the infrastructure on which the rolling stock circulates. The article aims at making a bibliographic analysis of measurement and processing techniques showing how the integration between accelerometric measurements and contact forces can lead to an improvement in the identif...
Article
A full electrification of many local railway lines is often not feasible or sustainable in terms of construction and maintenance costs or alternatively for the presence of additional constraints and limitations deriving from environmental or infrastructural limitations. Battery Operated Powertrains or other kind of hybrid solutions are currently pr...
Chapter
This paper presents a finite element (FE) modeling and frequency response analysis of an instrumented wheelset for rail applications. The wheelset was equipped with strain gauges to estimate contact forces at the interface between the wheels and the rails. The objective is to showcase the simulation results of the wheelset state-space reduced model...
Chapter
Full-text available
Multi-modal battery-operated trains are gaining an increasing favor and diffusion, as a sustainable alternative to Diesel-Electric and Diesel-Hydraulic Powertrain that are conventionally used on not electrified or partially electrified lines. In this work authors examine how current improvements on battery technologies are going to increase perform...
Chapter
Lithium-ion battery cells are considered the best solution for energy storage systems in Battery Electric Vehicles (BEVs), due to their high energy density, high lifecycle, and low aging impact. Battery performances are strictly connected to operating conditions, especially temperature. Modern Battery Thermal Management Systems (BTMSs) optimize bat...
Article
Full-text available
A full electrification of many local railway lines is often not feasible or sustainable in terms of construction and maintenance costs or alternatively for the presence of additional constraints and limitations deriving from environmental or infrastructural limitations. Battery Operated or other kind of hybrid solutions powertrains are currently pr...
Preprint
Full-text available
A full electrification of many local railway lines is often not feasible or sustainable in terms of construction and maintenance costs or alternatively for the presence of additional constraints and limitations deriving from environmental or infrastructural limitations. Battery Operated or other kind of hybrid solutions powertrains are currently pr...
Article
Full-text available
Cycloidal roller gearboxes offer good performance in terms of loading capacity and overloading limits, but a precise manufacturing process is required to avoid overloads on relatively small teeth. In addition, these gearboxes are very sensitive to lubrication, which plays an important role on the contact surfaces of rollers and teeth. However, it i...
Article
Full-text available
This study concerns the comparative investigation of two advanced lateral stability automotive controllers with respect to a commercial solution. The research aims to improve the stability performances achieved by a combined tracking of yaw rate and side-slip angle through the application of optimal efforts. The proposed solutions are based on Line...
Chapter
A fast and reliable recharge of the electric public transportation system is a fundamental prerequisite for extended electrification and decarbonization of public transportation systems. As a part of continuous research cooperation, authors have proposed and tested different fast recharge technologies that have been tested on the fleet of electrica...
Chapter
Textile dryers are energy-consuming machines that are widely diffused in the textile industry Authors are currently working on the complete redesign of a sustainable drier which is completely rethought to maximize productivity and sustainability. In this work, the authors focus their attention on modeling and design of winding and transport of the...
Chapter
The drying processes of wool and other textile materials are energyintensive and not very efficient. In this work, the authors investigated an unconventional drying system able to produce a uniform drying preserving the quality of the treated fabric. The proposed process is also very efficient since the proposed radiofrequency technology can optimi...
Article
Full-text available
Assessment of railway wheel slide protection (WSP) systems involves the execution of complex experimental activities that are quite expensive and time-consuming, since they involve the physical reproduction of degraded adhesion conditions on a real railway line. WSP is devoted to regulating applied braking forces to avoid excessive wheel sliding in...
Article
Purpose The purpose of this work is to optimize the monitoring of vibrations on dynamometric test rigs for railway brakes. This is a quite demanding application considering the continuous increase of performances of high-speed trains that involve higher testing specifications for brake pads and disks. Design/methodology/approach In this work, auth...
Article
Full-text available
The PROTEUS project involves the construction of a self-propelled and floating amphibious machine for near shore geological surveys. In this context, the development of a wireline core drilling device was tackled, evolving with respect to existing models and responding to the specificities of the new application. In the preliminary phase, comparati...
Preprint
Full-text available
Object of this work is the design and the simulation of a hybrid UAV with VTOL capabilities that has been designed for landing on naval moving platforms. The work is focused on the innovative propulsion layout adopted on the UAV. Authors discuss how adopted low level control strategies can exploit the innovative features of the proposed system assu...
Article
Additive Manufacturing (AM) has emerged as an economical and feasible technology for creating industrial components. This paper evaluates the use of AM for inductive Wireless Power Transfer (WPT) systems. In particular, the innovative use of metal 3D printing is proposed as a manufacturing process for the coils. For this reason, the recent improvem...
Chapter
The present work involves the study of a path following sliding mode strategy. Different control algorithms and calibrations are compared. Proposed control strategy implies not only an improved accuracy in terms of path following but also robustness against wind disturbances. These features have been verified considering as indices of accuracy and...
Article
The development of the blue economy involves the construction of marine infrastructures (harbors, marine wind farms, underwater data centers, etc.). All these activities require a geological investigation of the sea bottom. For nearshore and very near-shore applications the most common solution is represented by the adoption of fixed jack-up platfo...
Article
Full-text available
Measurement of Equivalent Conicity is quite important index to properly evaluate geometric quality of rails and wheels. The way in which this index is evaluated is evaluated is described by the standard EN 15302 from online contactless measurement of rail profiles performed by a dedicated measurement coach. The numerical treatment of large amount o...
Article
Diesel multiple units (DMU) offer an affordable alternative to electric trains on lines in which infrastructural and maintenance costs of electrification are not justified. A further improvement of sustainability involves the abandonment of internal combustion engines in favour of an electric power train sustained by an on-board storage system. In...
Chapter
Trenchless technologies represent an innovative opportunity to improve quality, sustainability and overall costs of many construction works dealing with installation of various kind of ser-vices and utilities especially in crowded urban environments where interactions of conventional construction yards with surrounding community should produce an a...
Chapter
The aim of this chapter is to investigate how hybridization should help to improve efficiency and sustainability of heavy vehicles including public transportation systems, trucks, and tracked machines. Fundamental concepts are introduced and illustrated through a gallery of examples mainly related to previous research experiences of authors.
Chapter
Control of Autonomous Sail Vehicles involves a precise measurement of amplitude and direction of incoming wind. Ultrasound anemometers are widely used for this purpose. In previous research activities authors have successfully developed, calibrated, and integrated in existing autonomous sailboats a planar ultrasound anemometer. In this work authors...
Article
Full-text available
This paper is an outcome of an international collaborative research initiative. Researchers from 24 institutions across 12 countries were invited to discuss the state-of-the-art in railway train air brake modelling with an emphasis on freight rains. Discussed models are classified as empirical, fluid dynamics and fluid-empirical dynamics models. Em...
Article
Full-text available
Classic circuit modeling for supercapacitors is limited in representing the strongly non-linear behavior of the hybrid supercapacitor technology. In this work, two novel modeling techniques suitable to represent the time-domain electrical behavior of a hybrid supercapacitor are presented. The first technique enhances a well-affirmed circuit model b...
Chapter
Full-text available
UAVs offer an affordable and sustainable way to improve monitoring of large areas contributing, as example, to gather large amount of data or to improve the surveillance of sites in which criminal activities such as clandestine immigration should harm safety of peoples. Patrolling of large areas involves the use of Unmanned Aerial Vehicles with lar...
Article
Full-text available
Purpose The purpose of this paper is to present an alternative solution for press-fit technology processes, which could improve the precision of the positioning movements and the stiffness of the structural elements. Design/methodology/approach A concept is presented and the related kinematics is described. Then, preliminary embodiment evaluations...
Article
The capability to assess and monitor the state of health (SOH) of lithium-based cells is a highly demanded feature for advanced battery management systems. Due to the existing relation between SOH and internal impedance, electrochemical impedance spectroscopy (EIS) methods are adopted for SOH diagnosis. Nevertheless, accurate EIS tests demand expen...
Article
Full-text available
Newly electric vehicle architectures require intensive virtual and physical testing for safety assessment, due to the increasing relevance of By-Wire systems and the presence of innovative control algorithms for ordinary driving scenario, potential emergency situations or Advanced Driver-Assistance Systems implementation purpose. To reduce the deve...
Chapter
Trenchless excavation will play a key role in the development of smart cities allowing a fast and sustainable improvement of underground infrastructures. Directional drilling machines are a fundamental tool in this process allowing the installation of pipes, ducts and cables with a relatively free trajectory. In the optic of a progressive decarboni...
Chapter
The term roto-linear actuator is used to describe a solution able to control at the same time two degree of freedom, a linear motion along an axis and a rotation around the same one, realizing a controlled helicoidal motion with variable pitch. This kind of actuation systems widely diffused in robotics are encountering a growing diffusion also appl...
Article
Full-text available
This paper presents the design procedure of an electric circuit that can perform the battery state diagnosis and, simultaneously, provide its charging. A fast and embedded impedance measurement method is also proposed; this is based on a broadband current signal excitation on the battery during the constant current charging phase. The proposed solu...
Chapter
Full-text available
Safety of railway signalling systems is strongly related to reliability of on board train localization respect to protected points of the line. In particular, the so-called odometry is the system devoted to train localization along the line. Current systems like the Italian SCMT (Sistema Controllo Marcia Treno) implement localization as a filtered...
Chapter
Cartesian Manipulators are still widely used in many application sectors, due to their relatively simple construction and easy controllability. In this work authors present a study concerning the revamping of an existing manipulator, in which it’s shown how an integrated mechatronic design affecting structure, actuation and drive system can produce...
Article
Full-text available
This paper proposes a hybrid storage for urban transport systems in order to reduce recharge time and increase its life and reliability. Proposed system is applied to a pre-existing electric vehicle, introducing through proposed revamping procedure a methodology for a fast integration of proposed systems on different vehicles. Finally, the system i...
Article
Full-text available
In this paper, the design procedure of an electric vehicle (EV) wireless charger is presented. Unlike most of the systems available in the literature, the proposed charging system is regulated from the vehicle side. The on-board electrical circuit automatically adapts the resonant compensation to guarantee compatibility with the primary inverter ch...
Article
Purpose This study aims to carry out an investigation of design approaches that should be used for the design of unconventional, innovative transmission system for construction yards to privilege a smooth behaviour efficiency, and the use of innovative production techniques. Results are quite surprising, as with a proper method it is possible to de...
Article
Diffusion of electric and hybrid vehicles is accelerating the development of innovative braking technologies. Calibration of accurate models of a hydraulic brake plant involves availability of large amount of data whose acquisition is expensive and time consuming. Also, for some applications, such as vehicle simulators and hardware in the loop test...
Article
This article presents a set of algorithms for the estimation of state of charge, specifically deployed for lithium-ion batteries. These algorithms are based on appropriate battery models. These models can be developed having different levels of accuracy, also including the possibility to correctly represent the hysteresis voltage behaviour of the s...