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- Title
Safe Tracking Control Strategy of Nonlinear Systems with Unknown Initial Tracking Condition: A Secure Boundary Protection Method Based on Prescribed Finite-time Control.
- Authors
Zou Songnan; Li Xiaohua; Liu Yang
- Abstract
A safe tracking control problem is investigated for a class of nonlinear systems with unknown initial tracking condition. The safe tracking control is independent of the initial tracking condition with the help of a novel output mapping. A secure boundary protection method (SBPM) based on prescribed finite-time control and a new prescribed finitetime performance function (PFTPF) is proposed. The SBPM can guarantee the safe operation of the system when the desired output violates the output constraint function. The method can ensure the system satisfies both the tracking control performance specified by the PFTPF and the actual output constraints. It can effectively handle the abrupt changes of actual output constraints. To solve the excessive control input jitter problem caused by the sudden changes of the output constraints, a bidirectional filtering smoothing mechanism (BFSM) is proposed. Finally, the effectiveness and superiority of the proposed method are verified by simulations.
- Subjects
NONLINEAR systems; ARTIFICIAL satellite tracking
- Publication
Engineering Letters, 2024, Vol 32, Issue 7, p1402
- ISSN
1816-093X
- Publication type
Article