Other Projects


G-force test gantry
Polymer damper
High-speed XYZ Glue unit
Nano precision X-Y-Rz stage
Actuator Test Rig
Through-wall maglev stage
Active Vibration Isolation
Gantry stage fair demonstrator
Force cancellation demonstrator
Glass test setup
Assembly tool
→ Seismic Vibrator
Hybrid Actuator
Automatic Bookstack Unloader
Over Actuated Demonstrator
Trailer design
Diffractive element tester
SCIL® nano-imprint module

Seismic Vibrator - TU Delft

A seismic vibrator, capable of applying low frequency forces repeatable to the ground, was developed and built.

 

For seismic monitoring and exploration of oil and gas reserves the ground is excited with a vibrator. Commercially available systems use hydraulics to create the required forces. For the excitation at low frequencies (2-5 Hz), the non-linear behavior of the hydraulics is the limiting factor in the performance. Therefore, a new vibrator, based on linear motor technology was developed.

 

A Euspen paper can be found here.

 

Challenges
  • Obtaining a signal bandwidth of 2-200Hz without limitations from internal resonances within the 1000 kg structure
  • Creating a stiff, frictionless and repeatable guiding for 24/7 usage
  • Designing a low stiffness gravity compensator
Key Competences
  • Prediction of frequency response functions / mode shape analyses
  • Construction Principles for Precision Engineering
Results
  • In the field tested prototype
  • Working prototype for research of non-linear ground behavior
Cooperation