Back to Portfolio Robin De Lissnyder
BRUFACE • ULB & VUB • MASTER'S THESIS

Powered Back Exoskeleton — Biomechanics & AI Platform

Real-time lumbar torque prediction and OpenSim biomechanics studio for active back-support exoskeletons.

OpenSim Python API TensorFlow 2.18 (CUDA) Xsens Awinda (17 IMUs @ 60Hz) Cometa Wave Plus sEMG (1980Hz) FastAPI & WebSockets React 18 & TypeScript Docker & NVIDIA GPU
Experimental Mocap Protocol & Biomechanical Acquisition Demo Live Recording
Webapp & Biomechanics Neural Studio 1. Data Ingestion & OpenSim

Step 1: Data Ingestion, OpenSim Scaling & Force Assignments

Importing multi-modal sensor files into the webapp, static calibration, automated Rajagopal2015 model scaling, Inverse Kinematics, and interactive external force assignments.

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Headless Pipeline (OpenSim C++ API)
Neural Studio (FastAPI + TensorFlow CUDA)
1
Ingestion & OpenSim

Multi-modal sensor file import → automated 37-DOF Rajagopal2015 model scaling & force assignments.

2
OpenSim Visualizer

Seamless loading of exported .mot / .trc simulation artifacts for full 3D skeletal kinematic inspection.

3
DSP & Neural Studio

Automatic sheet matching, live multi-graph DSP filter tuning, custom deep neural builder & GPU training.

4
Inference & Benchmarks

Drag-and-drop model ZIP deployment with real-time continuous torque inference vs ground truth.

Technical Subsystems

5 Subsystems
01

Multi-Modal Sensor Acquisition

7-Subject Cohort

8–22 kg symmetrical, asymmetrical & fatigue lifts — 17 wireless Xsens IMUs (60 Hz) + 8–10 Cometa sEMG lumbar electrodes (1980 Hz).

02

Headless OpenSim Physics Solver

Rajagopal2015

Automated 37-DOF musculoskeletal scaling, inverse kinematics, and 3D ground-truth lumbar torque computation (τext, τbend, τrot).

03

Strictly Causal DSP Filtering

Zero Lookahead

Single-pass Butterworth SOS bandpass, rolling MAD outlier rejection, and 60 Hz RMS envelope synchronization for real-time hardware.

04

Full-Stack Neural Studio

FastAPI + React

Multi-file dataset stacking, 100+ channel selector, modular Keras architecture builder, and live WebSocket GPU training telemetry.

05

Parquet Caching & Docker GPU Pipeline

CUDA + Zero-Copy

Apache Parquet columnar caching, NumPy zero-copy sliding windows, and Docker Compose orchestration with NVIDIA GPU passthrough.

Interested in my machine learning & robotics thesis?

I would be glad to discuss biomechanical modeling, neural network architectures, and full-stack software design.