High Relative Degree Control Barrier Functions Under Input Constraints
High Relative Degree Control Barrier Functions Under Input Constraints
复制标题
输入约束下的高相对度控制势垒函数
DOI:
10.1109/cdc45484.2021.9683705
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Dimitra Panagou
中科院分区:
文献类型:
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作者:
J. Breeden;Dimitra Panagou
This paper presents methodologies for ensuring forward invariance of sublevel sets of constraint functions with high-relative-degree with respect to the system dynamics and in the presence of input constraints. We show that such constraint functions can be converted into special Zeroing Control Barrier Functions (ZCBFs), which, by construction, generate sufficient conditions for rendering the state always inside a sublevel set of the constraint function in the presence of input constraints. We present a general form for one such ZCBF, as well as a special case applicable to a specific class of systems. We conclude with a comparison of system trajectories under the two ZCBFs developed and prior literature, and a case study for an asteroid observation problem using quadratic-program based controllers to enforce the ZCBF condition.