The DCS team has the know-how and tools to put in place means of dynamic measurements and observations, signal acquisition and/or processing chains. These experimental skills enable dynamic characterisation, the identification and control of structures at standstill and in rotation, in both linear and non-linear domains.
Permanent researchers : Adeline BOURDON, Eric CHATELET, Simon CHESNE, Jarir MAHFOUD, Didier REMOND
Experimental skills and know-how
- Acquisition in Rotating Machines and Rotor Dynamics
- Angle encoders and transmission errors
- Experimental identification - Linear and non-linear behaviour
- Characterisation of equipment: sport, automotive, aeronautics, etc.
Identifying the behaviour of rotating machines. Set up specific acquisition chains. Modal analysis. Identify the behaviour of Smart Machines. Propose a control system for these structures.
On-board rotor dynamics |
Rotor on PMA |
Taking advantage of the rotation of rotating systems. Angular sampling. Behaviour monitoring, fault detection, transmission error, torsional behaviour.
Gearbox bench |
Angle bench for detecting bearing faults |
Propose measurement techniques to access the characteristics of materials or structures. Behavioural non-linearities. Geometric non-linearities. Modal identification. Design test benches to characterise multi-physics couplings, active or complex structures.
Belt drive test benches (speed, friction, vibrations, etc.). Implementation of innovative identification and control techniques |
Propose vibro-acoustic characterisations of equipment.
Vibration analysis - Acoustic analysis |
Experimental resources :
- Equipex PHARE: 6-axis servo-controlled exciter for 3 translations and 3 rotations
- Electrodynamic exciters from 10N to 6700N
- Specific measurement systems
- Polytec scanning laser vibrometer, Ométron laser vibrometer
- High-speed cameras
- Telemetry system
- Acquisition and control system
- 16-channel LMS (Teslab, Sine control)
- OROS 8 channels + Modal
- 12-channel dataphysics (sine, random, shock, signal replication)
- 8-channel M+P (sine, random, shock, signal replication)
- Agilent/HP dynamic analysers
- 1 Rack Pxi (National Instrument) 20 voies (throughput time acquisition)
- Specific test benches
Gearbox bench, driveline bench, belt bench, rotor bench ...
Pot 6700N 
Laser velocimeter characterisation of a complex structure |
Equipex PHARE (6-axis exciter) |