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Modified Control Barrier Function for Quadratic Program Based Control Design via Sum-of-Squares Programming
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Modified Control Barrier Function for Quadratic Program Based Control Design via Sum-of-Squares Programming
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Paper
Modified Control Barrier Function for Quadratic Program Based Control Design via Sum-of-Squares Programming
2025
Overview
We consider a nonlinear control affine system controlled by inputs generated by a quadratic program (QP) induced by a control barrier functions (CBF). Specifically, we slightly modify the condition satisfied by CBFs and study how the modification can positively impact the closed loop behavior of the system. We show that, QP-based controllers designed using the modified CBF condition preserves the desired properties of QP-based controllers using standard CBF conditions. Furthermore, using the generalized S-procedure for polynomial functions, we formulate the design of the modified CBFs as a Sum-Of-Squares (SOS) program, which can be solved efficiently. Via a numerical example, the proposed CBF design is shown to have superior performance over the standard CBF widely used in existing literature.
Publisher
Cornell University Library, arXiv.org
