Innovations in Nonlinear and Learning-Based Control Systems

Advances in Nonlinear and Learning-Based Control Systems

Recent developments in the field of control systems have seen a significant shift towards leveraging advanced learning techniques and innovative mathematical frameworks to address the complexities of nonlinear systems. The focus has been on enhancing the robustness and efficiency of control strategies through data-driven approaches, neural operators, and novel optimization techniques.

Key Trends:

  1. Data-Driven and Kernel-Based Predictive Control: There is a growing emphasis on developing predictive control schemes that are both data-driven and capable of handling nonlinear dynamics. These methods often utilize kernel methods and neural operators to parameterize and learn complex system behaviors, leading to more accurate and stable control solutions.

  2. Neural Operators and Function Approximation: The use of neural operators for approximating complex mappings in control systems has gained traction. These operators offer a computationally efficient way to handle high-dimensional and nonlinear systems, enabling real-time control with minimal computational overhead.

  3. Integration of Learning-Based Models in MPC: Incorporating learning-based models, such as Gaussian processes, into model predictive control (MPC) frameworks has shown promise in improving control performance and adaptability. These hybrid approaches address the limitations of traditional MPC by leveraging the strengths of both model-based and data-driven methods.

  4. Stability and Safety Guarantees in Learning-Based Control: Ensuring stability and safety in learning-based control systems remains a critical area of research. Recent work has focused on developing frameworks that provide theoretical guarantees for the stability of nonlinear systems, even under uncertain and time-varying conditions.

  5. Efficient and Scalable Control for Multi-Actuator Systems: Novel control methods for systems with multiple actuators have been proposed, emphasizing scalability and efficiency. These methods often rely on distributed algorithms and function approximation techniques to manage the complexity of large-scale systems.

Noteworthy Papers:

  • Kernelized offset-free data-driven predictive control for nonlinear systems: Introduces a novel kernel-based approach that addresses the limitations of traditional predictive controllers in nonlinear settings.
  • Neural Operators for Predictor Feedback Control of Nonlinear Delay Systems: Proposes a new perspective on predictor designs using neural operators, significantly reducing computational costs in delay-compensating controllers.
  • L4acados: Learning-based models for acados, applied to Gaussian process-based predictive control: Provides an efficient open-source implementation of GP-MPC, enhancing the practical application of learning-based models in control systems.
  • Data-driven optimal control of unknown nonlinear dynamical systems using the Koopman operator: Develops a theoretically certifiable framework integrating Koopman operators with reinforcement learning, achieving high-dimensional control with minimal error.
  • FRIDAY: Real-time Learning DNN-based Stable LQR controller for Nonlinear Systems under Uncertain Disturbances: Demonstrates a real-time-updated DNN approach for stabilizing LQR controllers, outperforming conventional methods in trajectory tracking.

These papers represent significant advancements in the field, offering innovative solutions to long-standing challenges in nonlinear and learning-based control systems.

Sources

Kernelized offset-free data-driven predictive control for nonlinear systems

One-Step Early Stopping Strategy using Neural Tangent Kernel Theory and Rademacher Complexity

Neural Operators for Predictor Feedback Control of Nonlinear Delay Systems

L4acados: Learning-based models for acados, applied to Gaussian process-based predictive control

Lyapunov based dynamic controller designs for reach-and-avoid problems

A Delay-free Control Method Based On Function Approximation And Broadcast For Robotic Surface And Multiactuator Systems

Neural Power-Optimal Magnetorquer Solution for Multi-Agent Formation and Attitude Control

A Control Framework for CUBESAT Rendezvous and Proximity Operations using Electric Propulsion

Online convex optimization for constrained control of nonlinear systems

Data-driven optimal control of unknown nonlinear dynamical systems using the Koopman operator

FRIDAY: Real-time Learning DNN-based Stable LQR controller for Nonlinear Systems under Uncertain Disturbances

Learning Koopman-based Stability Certificates for Unknown Nonlinear Systems

Can neural operators always be continuously discretized?

CIKAN: Constraint Informed Kolmogorov-Arnold Networks for Autonomous Spacecraft Rendezvous using Time Shift Governor

Learning Based MPC for Autonomous Driving Using a Low Dimensional Residual Model

Towards Fast and Safety-Guaranteed Trajectory Planning and Tracking for Time-Varying Systems

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