How to judge a linear system and a nonlinear system

time：2024-10-15 16:03:02 Gadget Highlights

Linear and nonlinear systems

Linear refers to the proportional and linear relationship between quantities, representing regular and smooth motion in space and time; Flying lines, on the other hand, refer to relationships that are not proportional or straight, representing irregular movements and abrupt changes.If we look at it from the state space expression of the system, the most obvious difference between linear and nonlinear systems is that linear systems conform to the principle of superposition, while nonlinear systems do not. In other words, linear systems have only one term for state variables. There are no higher-order, trigonometric functions, or constant terms, as long as there is any nonlinear link, it is a nonlinear system.

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