academia

September 2023: Two conference articles of the IEEE International Conference on Intelligent Transportation Systems.

Present a real-time parallel trajectory optimization method for the autonomous vehicles to achieve high travel efficiency in dynamic and congested environments.

April 2022: New journal article of the IEEE Robotics and Automation Letters.

We propose a learning-based tracking control scheme based on a feedback linearization controller and Gaussian Processes.

Safe Learning-Based Feedback Linearization Tracking Control for Nonlinear System with Event-Triggered Model Update

We propose a learning-based tracking control scheme based on a feedback linearization controller in which uncertain disturbances are approximated online using Gaussian Processes. Using the predicted distribution of disturbances given by GPs, a Control Lyapunov Function and Control Barrier Function based Quadratic Program is applied, with which probabilistic stability and safety are guaranteed.

April 2022: New journal article of the International Federation of Automatic Control (IFAC).

Propose a new learning-based framework based on incremental bayesian learning and control theory.

Safe learning-based gradient-free model predictive control based on cross-entropy method

A safe and learning-based control framework for model predictive control is proposed to optimize nonlinear systems with a non-differentiable objective function under uncertain environmental disturbances. The control framework integrates a learning-based MPC with an auxiliary controller in a way of minimal intervention. The proposed approach provides a promising solution to the propagation of stochastic state distributions in MPC, allowing for improved task performance while ensuring high levels of safety.

May 2021: New conference article of the American Control Conference.

A learning-based safety-preserving cascaded quadratic programming control policy for safe trajectory tracking under wind disturbances.

Safe learning-based tracking control for quadrotors under wind disturbances

Enforcing safety on precise trajectory tracking is critical for aerial robotics subject to wind disturbances. In this paper, we present a learning-based safety-preserving cascaded quadratic programming control for safe trajectory tracking under wind disturbances.

April 2021: New journal article of the IEEE Robotics and Automation Letters.

Time reallocation for trajectory replanning.

Learning-Based Predictive Path Following Control for Nonlinear Systems Under Uncertain Disturbances

A learning-based MPFC control paradigm for nonlinear systems under uncertain disturbances, coupling a high-level model predictive path following controller for proactivity with a low-level learning-based feedback linearization controller for adaptivity. Following that, nonlinear systems can rapidly rejoin their reference trajectory after sudden wind disturbances with stability guarantees.

Learning-Based Safety-Stability-Driven Control for Safety-Critical Systems under Model Uncertainties

A learning-based safety-stability-driven control algorithm is presented to guarantee the safety and tracking stability for nonlinear safety-critical systems subject to control input constraints under model uncertainties.