4.7 Article

Small-Time Local Controllability of Switched Nonlinear Systems

Journal

IEEE TRANSACTIONS ON AUTOMATIC CONTROL
Volume 66, Issue 11, Pages 5422-5428

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAC.2020.3044898

Keywords

Switches; Controllability; Nonlinear systems; Hybrid power systems; Switched systems; Linear systems; Algebra; Geometric control methods; small-time local controllability; switched nonlinear system (SNS)

Funding

  1. National Natural Science Foundation of China [61 773 201, 62 073 165]
  2. 111 Project [B20007]

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This article establishes a new high-order sufficient STLC condition for switched nonlinear systems by associating the original SNS with a nilpotent Lie algebra and defining high-order control variations and bad Lie brackets. The obtained general condition is shown to be compatible with existing controllability conditions of switched linear systems and nonswitched linear and nonlinear systems.
This article considers the small-time local controllability (STLC) of switched nonlinear systems (SNSs). First, the original SNS is associated with a nilpotent Lie algebra, on which the solutions of the SNS are approximated by the hybrid Lie power series. Second, the concepts of high-order control variations and bad Lie brackets are defined for SNSs from a geometrical point of view. This helps to establish a new high-order sufficient STLC condition that is closely related to neutralized bad Lie brackets. Finally, it is shown that the obtained general condition is compatible with the existing controllability conditions of switched linear systems and nonswitched linear and nonlinear systems.

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