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Viennet Emmanuel

Professeur HES associé

Hauptkompetenzen

Professeur HES associé

Telefon-Nummer: +41 26 429 66 70

Büro: HEIA_E00.08

Haute école d'ingénierie et d'architecture de Fribourg
Boulevard de Pérolles 80, 1700 Fribourg, CH

Institut
SeSi - Sustainable Engineering Systems Institute

BSc HES-SO en Génie mécanique - Haute école d'ingénierie et d'architecture de Fribourg

Modélisation de systèmes

MSc HES-SO en Engineering - HES-SO Master

Projets Interdisciplinaires (entraînements électriques)
Travaux de Master

Laufend

Development of a Hardware-in-the-Loop Test Bench for Validation of an Anti-lock Braking System on an E-Bike

AGP

Rolle: Hauptgesuchsteller/in

Financement: FR - EIA - Institut SeSi

Description du projet : The goal of the project is to apply model-based system engineering tools and techniques to streamline the development of an anti-lock braking system (ABS) for an electric bicycle (e-bike). More specifically, the project focuses on the development of a hardware-in-the-loop (HiL) test bench that can be used to validate an e-bike ABS in different test scenarios. The same e-bike can be used in a wide variety of loading conditions, such as with a child seat or panniers (mounted on the front or rear), and different types of tires. Therefore, validating the overall system'i.e., ABS and e-bike'over a wide range of parameters, such as the mass of the rider, load distribution, and tire characteristics, is challenging. The chosen approach involves interfacing a parameterizable virtual bicycle simulation model running on a real-time target machine with the physical ABS hardware under test. The virtual bicycle consists in an equation-based model that considers six degrees of freedom representing the in-plane longitudinal dynamics of an e-bike. The simulation model is experimentally validated against measurements made on an instrumented test bike. Tests carried out as part of this development show that the developed HiL test bench can be successfully interfaced with a commercially available ABS, enabling the overall behavior of the ABS and the e-bike to be tested and evaluated in a safe and reproducible way before testing begins on the track.

Forschungsteam innerhalb von HES-SO: Viennet Emmanuel , Robyr Jean-Luc , Bouchardy Loïc , Lambrughi Alessandro , Murith Noé , Donato Laurent , Bonvin Leewan , Pasche Valentin , Corpataux Dominique , Rogivue Yohann , Raetzo Raphaël , Mujkic Arnel , Ramosaj Nicolas , Fusco Christian

Durée du projet: 01.05.2020 - 31.12.2025

Montant global du projet: 120'750 CHF

Statut: Laufend

Abgeschlossen

Simulation and Experimental Validation of a Hydraulic Solenoid Pressure Reducing valve

Rolle: Hauptgesuchsteller/in

Financement: Fonds privés

Description du projet :

The aim of the project was to develop a dynamic simulation model of a hydraulic pressure reducer with solenoid actuation. The model was developed using Simcenter Amesim software and validated by measurements performed on a dedicated electro-hydraulic test bench developed at HEIA-FR. The simulation model show good correlation with the measurements, and can be integrated into system-level models for realistic, computationally efficient simulations.

Forschungsteam innerhalb von HES-SO: Viennet Emmanuel , Lalou Moncef Justin , Rogivue Yohann

Durée du projet: 01.05.2023 - 31.12.2023

Statut: Abgeschlossen

Modeling, Simulation and Design of an Axial Piston Pump for Aerospace Applications

Rolle: Mitarbeiter

Financement: Fonds privés

Description du projet :

The project aims to develop a 0.6 cm3/rev fixed-displacement axial piston pump for use in an electro-hydraulic actuator (EHA) for primary flight controls. More specifically, the project focuses on the cylinder-block and valve-plate interface, and proposes a design based on available literature or best practice from proven existing products. A Simcenter Amesim simulation model is adapted to reflect the specific geometry of the pump to be developed, and is used to propose a new design for the valve-plate porting geometry that reduces the intensity of reported cavitation erosion.

Forschungsteam innerhalb von HES-SO: Viennet Emmanuel

Durée du projet: 07.01.2019 - 31.10.2019

Publications liées:

Robustness of the liebherr-aerospace eha technology for future flight control application

Statut: Abgeschlossen

Preliminary Design and Testing of a Servo-Hydraulic Actuation System for an Autonomous Ankle Exoskeleton

Rolle: Hauptgesuchsteller/in

Description du projet :

The aim of the project was to develop a motorized ankle-foot orthosis for use in rehabilitation therapy. More specifically, the project focused on the development of a hydraulic actuation system for an ankle exoskeleton capable of delivering a peak power of 250 W, with a maximum torque of 90 N.m and a maximum speed of 320 degrees per second. After justifying the choice of a servo-hydraulic actuator (SHA) over an electro-hydrostatic actuator (EHA) for the envisaged application, a first functional prototype was built and tested. The frequency response of the prototype's closed-loop no-load displacement showed a bandwidth ranging from 5 Hz to 8 Hz for displacement amplitudes between +/-5mm and +/-20mm, demonstrating adequate dynamic performance at normal walking speed. A detailed design was then proposed, combining commercially available components (in particular a miniature servovalve and a diaphragm accumulator) with a custom-made aluminum manifold incorporating the hydraulic cylinder. The actuator design results in a total pin weight of 1.0 kg.

Forschungsteam innerhalb von HES-SO: Viennet Emmanuel , Bouchardy Loïc

Durée du projet: 01.01.2018 - 31.08.2019

Montant global du projet: 125'000 CHF

Archivage des données: Fonds publics

Publications liées:

Preliminary design and testing of a servo-hydraulic actuation system for an autonomous ankle exoskeleton

Statut: Abgeschlossen

Noise and Vibration Reduction for an Aerospace Secondary Controlled Hydraulic Motor

Rolle: Mitarbeiter

Financement: Fonds privés

Description du projet :

The project aims to reduce the noise measured inside the fuselage of an Airbus A350 generated by the hydraulic motor of the high-lift actuation system during take-off and landing. More specifically, the project focuses on the design of the hydraulic motor valve plate using a simulation model developed with Simcenter Amesim software. A noise reduction of -10dBA was measured without affecting weight, cost or performance.

Forschungsteam innerhalb von HES-SO: Viennet Emmanuel

Durée du projet: 01.10.2017 - 31.12.2017

Publications liées:

Noise and vibration reduction for an aerospace secondary controlled hydraulic motor

Statut: Abgeschlossen

2024

Development of a hardware-in-the-loop test bench for validation of an anti-lock braking system on an e-bike

Konferenz ArODES

Nicolas Ramosaj, Christian Fusco, Emmanuel Viennet

The Evolving Scholar ; Proceedings of

Link zur Konferenz

Zusammenfassung:

This article presents the development of a hardware-in-the-loop (HiL) test bench that can be used to validate an electric bicycle (e-bike) anti-lock braking system (ABS) in different test scenarios. The same e-bike can be used in a wide variety of loading conditions, such as with a child seat or panniers (mounted on the front or rear), and different types of tires. Therefore, validating the overall system—i.e., ABS and e-bike—over a wide range of parameters, such as the mass of the rider, load distribution, and tire characteristics, is challenging. The approach presented here involves interfacing a parameterizable virtual bicycle simulation model running on a real-time target machine with the physical ABS hardware under test. This article describes the derivation of an equation-based model that considers six degrees of freedom representing the in-plane longitudinal dynamics of an e-bike. The simulation model was experimentally validated against measurements made on an instrumented test bike. Tests carried out as part of this development show that the developed HiL test bench can be successfully interfaced with a commercially available ABS, enabling the overall behavior of the ABS and the e-bike to be tested and evaluated in a safe and reproducible way before testing begins on the track.

2020

Preliminary design and testing of a servo-hydraulic actuation system for an autonomous ankle exoskeleton

Konferenz ArODES

Emmanuel Viennet, Loïc Bouchardy

Proceedings of the 12th International Fluid Power Conference, 12-14 October 2020, Dresden, Germany

Link zur Konferenz

Zusammenfassung:

The work presented in this paper aims at developing a hydraulic actuation system for an ankle exoskeleton that is able to deliver a peak power of 250 W, with a maximum torque of 90 N.m and maximum speed of 320 deg/s. After justifying the choice of a servo hydraulic actuator (SHA) over an electro hydrostatic actuator (EHA) for the targeted application, some test results of a first functional prototype are presented. The closed-loop unloaded displacement frequency response of the prototype shows a bandwidth ranging from 5 Hz to 8 Hz for displacement amplitudes between +/-5mm and +/- 20mm, thus demonstrating adequate dynamic performance for normal walking speed. Then, a detailed design is proposed as a combination of commercially available components (in particular a miniature servo valve and a membrane accumulator) and a custom aluminium manifold that incorporates the hydraulic cylinder. The actuator design achieves a total weight of 1.0 kg worn at the ankle.

Robustness of the liebherr-aerospace eha technology for future flight control application

Konferenz ArODES

Tobias Röben, Emmanuel Viennet, Henry Wider

Proceedings of the 12th International Fluid Power Conference, 12-14 October 2020, Dresden, Germany

Link zur Konferenz

Zusammenfassung:

Future more electric aircraft (MEA) architectures require a new generation of power-by-wire actuators, e.g. Electro Hydrostatic Actuators (EHA). These units have to be capable of frontline operation of safety critical flight control surfaces over the entire aircraft life. Prove of robustness becomes a challenging objective. This paper illustrates the Liebherr-Aerospace EHA technology as well as methods for validation of robustness. It gives an insight regarding the design of a robust piston pump.

2018

Noise and vibration reduction for an aerospace secondary controlled hydraulic motor

Konferenz ArODES

Emmanuel Viennet, Anton Gaile, Tobias Röben

Proceedings of the 11th International Fluid Power Conference, 19-21 March 2018, Aachen, Germany

Link zur Konferenz

Zusammenfassung:

During flight, passenger comfort is affected by noise emissions from various aircraft systems. Apart from jet engines one of the main sources of noise within the fuselage is the power control unit (PCU) for high-lift actuation. In preparation for take-off and landing this hydraulic motor is responsible for the extension and retraction of the slats and flaps. Along with the increase in operating pressure from 206bar (3,000psi) to 345bar (5,000psi) noise and vibration induced by fluid power systems became more striking. Consequently the aim of the BMWI founded research project “Move On” was to reduce the emissions of Liebherr’s power control unit. The results of these research activities are presented within this paper. It is shown how the noise emissions could be reduced in a secondary controlled hydraulic motor by means of a valve-plate and structure optimization. In addition the results of a noise measurement campaign, conducted by Airbus on an A350, are presented.

Errungenschaften

PEOPLE@HES-SO
Verzeichnis der Mitarbeitenden und Kompetenzen

Viennet Emmanuel

Professeur HES associé

Hauptkompetenzen

Hydraulic fluid power

Mechatronic system simulation

Drive and propulsion systems

Engineering dynamics

Simcenter Amesim

Professeur HES associé

PEOPLE@HES-SO Verzeichnis der Mitarbeitenden und Kompetenzen

Viennet Emmanuel

Professeur HES associé

Hauptkompetenzen

Hydraulic fluid power

Mechatronic system simulation

Drive and propulsion systems

Engineering dynamics

Simcenter Amesim

Professeur HES associé

PEOPLE@HES-SO
Verzeichnis der Mitarbeitenden und Kompetenzen