Research
Contemporary quadruped locomotion controllers trained with reinforcement learning rely, almost universally, on externally introduced locomotion priors — architectural ones such as central pattern generators, or reward functions that explicitly encode desired gait properties. My work removes these priors from both the policy architecture and the reward, and instead makes the training process itself responsive to the latent space that forms inside a modular encoder–controller architecture. The central hypothesis: the structured, periodic nature of stable quadruped locomotion can emerge as a consequence of optimisation, not as a precondition of it.
Three connected goals:
- Learning — learn structured, generalisable latent representations of the robot’s dynamics and its environment.
- Understanding — understand how these representations modulate adaptive behaviour: gait, stability, transitions.
- Applying — use what the latent space reveals to improve training — curricula, exploration, control architectures.
Platform: PPO, NVIDIA Isaac Sim / Isaac Lab, Unitree Go1/Go2.
Projects
- Latent space investigation for quadruped locomotion control
The core PhD project: what a controller's latent representation organises when no gait structure is prescribed, and whether reading it can guide training.
Posters, papers, talks
- Latent Representations Encoding Behavior and Modulating Adaptivity in Locomotion Learning
Poster abstract accepted at SAB 2026, the International Conference on the Simulation of Adaptive Behavior (Springer LNCS).
- Proprioceptive quadruped locomotion without gait priors, stage one: a learnable representation shaped by an auxiliary dynamics objective structures the locomotion manifold
Poster at WHERE 2026 — Walk the Future, International Euregio Summer School on Legged Robots, Trento.
- Towards Auto-Generated Ground Truth for Evaluation of Perception Systems in Agriculture
Krause, Niemeyer, Bajorath, Iqbal, Hertzberg — Computer Vision – ECCV 2024 Workshops, Springer.
- Diffraction-Unlimited Photomanipulation at the Plasma Membrane via Specifically Targeted Upconversion Nanoparticles
Drees, Rühl, Czerny, Chandra, Bajorath, Haase, Piehler — Nano Letters 21, 2021.