state estimation error observer design

how to plot the norm of the estimation error dynamics, ||e(t)||2 as a function of time where the observer’s initial conditions are given?

Answer 1

[Sam Chak]

If the error dynamics is described by a linear model Esys, then

n2 = norm(Esys, 2)

computes the root-mean-squares of the impulse response of the linear dynamic system that is equivalent to the -norm of system.

https://www.mathworks.com/help/control/ref/lti.norm.html

[KANAN AYDINLI]

thank you for your answer Sam. But that gives me a number n2. how can I plot that ?

[Sam Chak]

I guess, if the error state norm varies over time, then you probably have to compute a vector of norm over time.