학술논문

Robust Control Barrier Functions With Sector-Bounded Uncertainties
Document Type
Periodical
Source
IEEE Control Systems Letters IEEE Control Syst. Lett. Control Systems Letters, IEEE. 6:1994-1999 2022
Subject
Robotics and Control Systems
Computing and Processing
Components, Circuits, Devices and Systems
Uncertainty
Robust control
Safety
Optimization
Trajectory
Perturbation methods
Vehicle dynamics
optimization
Language
ISSN
2475-1456
Abstract
This letter focuses on safety-critical control with sector-bounded uncertainties at the plant input. The uncertainties can represent nonlinear and/or time-varying components. We propose a new robust control barrier function (RCBF) approach to enforce safety requirements in the presence of these uncertainties. The primary objective is to minimally alter the given baseline control command to guarantee safety in the presence of modeled uncertainty. The resulting min-norm optimization problem can be recast as a Second-Order Cone Program (SOCP) to enable online implementation. Properties of this controller are studied, and a numerical example is provided to illustrate the effectiveness of this approach.