Research Pages

• Dehaeze, T., Mattenet, M. M., & Collette, C., Sample Stabilization For Tomography Experiments In Presence Of Large Plant Uncertainty, In MEDSI’18 (pp. 153–157) (2018). Geneva, Switzerland: JACoW Publishing. (link)
• Dehaeze, T., Vermat, M., & Christophe, C., Complementary filters shaping using \(H_\infty\) synthesis, In 7th International Conference on Control, Mechatronics and Automation (ICCMA) (pp. 459–464) (2019). (link)
• Dehaeze, T., & Collette, C., Active damping of rotating platforms using Integral Force Feedback, In Proceedings of the International Conference on Modal Analysis Noise and Vibration Engineering (ISMA) (2020). (link)

• Verma, M., Dehaeze, T., Zhao, G., Watchi, J., & Collette, C., Virtual sensor fusion for high precision control, Mechanical Systems and Signal Processing, 150, 107241 (2020). http://dx.doi.org/10.1016/j.ymssp.2020.107241 (pdf)
• Verma, M., Lafarga, V., Dehaeze, T., & Collette, C., Multi-degree of freedom isolation system with high frequency roll-off for drone camera stabilization, IEEE Access, (2020). http://dx.doi.org/10.1109/ACCESS.2020.3027066 (pdf)

Spectral Analysis

Basics of spectral analysis are presented alongside the Matlab codes. This includes:

• power spectral density
• cumulative power spectrum
• noise budgeting
• …

Bank of Filters using matlab

Several types of linear filters (low pass, high pass, notch, lead, etc.) are presented with the corresponding Matlab code.

Finite Element Models with Simscape

Finite Element Models (FEM) can be included into Simscape Multi-Body models. This document presents how to do so.

Manage Gravity within Simscape

Gravity can add some problems in multi-body simscape models: at the beginning of the simulation, some sag will be experience that may be unwanted. In order to start the simulation at equilibrium, few measured can be employed that are described in this document.

Voltage Amplifiers for Piezoelectric Actuators

Voltage amplifiers for capacitive loads (piezoelectric actuators) are measured in term of dynamics from input voltage to output voltage. Their output impedance are also measured.

Attocube

The Attocube (a fiber based interferometer) is tested. Its noise characteristics as well as non-linearities are measured.

Amplified Piezoelectric Actuator - Test bench and Finite Element Model

A test bench is used to characterise the performances of an Amplified Piezoelectric Actuator (APA). The dynamics of the system is identified and compared with a Finite Element Model (FEM).

Encoder in parallel with an Amplified Piezoelectric Actuator

An encoder is fixed in parallel with an amplified piezoelectric actuator. The transfer function from the actuator to the motions measured by the encoder is identified.

Piezoelectric Stack as Force Sensor

A part of a piezoelectric stack can be used as a force sensor. Then, the force sensors is collocated with the part of the stack used as an actuator and Integral Force Feedback control strategy can be used to add damping in the system. This is performed on an Amplified Piezoelectric Actuator

Sensor Fusion of Inertial Sensors

A geophone and a accelerometer are experimentally fused together using complementary filters. The goal is to form a super sensor that has better noise characteristics than the individual sensors.