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Global properties of continuous piecewise linear vector fields. Part I: Simplest case in ℝ 2
Author(s) -
Lum Robert,
Chua Leon O.
Publication year - 1991
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.4490190305
Subject(s) - vector field , piecewise linear function , mathematics , state vector , boundary (topology) , field (mathematics) , mathematical analysis , piecewise linear manifold , state (computer science) , boundary value problem , piecewise , vector space , state space , linear form , vector potential , pure mathematics , physics , algorithm , geometry , statistics , classical mechanics , quantum mechanics , magnetic field
Among non‐linear vector fields, the simplest that can be studied are those which are continuous and piecewise linear. Associated with these types of vector fields are partitions of the state space into a finite number of regions. In each region the vector field is linear. On the boundary between regions it is required that the vector field be continuous from both regions in which it is linear. This presentation is devoted to the analysis in two dimensions of the simplest possible types of continuous piecewise linear vector fields, namely linear vector fields possessing only one boundary condition. As a practical concern the analysis will attempt to ask and answer questions raised about the existence of steady state solutions. Since the local theory of fixed points in a linear vector field is sufficient to determine the stability of fixed points in a piecewise linear vector field, most of the steady state behaviour to be studied will be towards limited cycles. the results will present sufficient conditions for the existence, or non‐existence as the case may be, of limit cycles. Particular attention will be paid to the domain of attraction whenever possible. With these results qualitative statements may be made for piecewise linear models of many physical systems.