Arrows showing differences in pgfplots

Question

I am working on 2nd order systems with overthrow. How to draw the following arrows as I have poorly put in this example using Paint?

\begin{center}
\begin{tikzpicture}
\begin{axis}
[
axis line style={shorten >=-10pt, shorten <=-10pt},
axis y line=center,
axis x line=middle,
no markers,
ytick={1.6 ,1.85},
yticklabels={$s(\infty)$, Consigne},
xtick={1.631},
xticklabels={$t_m$},
  xlabel style={
            anchor=west,
            at={(ticklabel* cs:1.0)},
            xshift=10pt
},
        ylabel style={
            anchor=south,
            at={(ticklabel* cs:1.0)},
            yshift=10pt
        },
xlabel=$t$,ylabel=$s(t)$,
]
\addplot+[blue, thick, domain=0:20, samples=250] {1.6-1.6*sin(x/0.01745+90)*2.718^(-0.25*x)};
\addplot+[dashed] coordinates{(0,1.6) (20,1.6)};
\addplot+[dashed] coordinates{(0,1.85) (20,1.85)};
\addplot+[dashed] coordinates{(1.631,0) (1.631,1.6)};
\end{axis}
\end{tikzpicture}
\end{center}

You can have a look at https://tex.stackexchange.com/questions/46176/pgfplots-mark-max-min-value-of-a-function and it's overshoot by the way. — percusse, Dec 10 '17 at 20:02
Actually, it's supposed to be "dépassement": the course is in French. So the actual name in English is the least of my concerns. Thanks for pointing this out to me anyway! — Majd Freigi, Dec 11 '17 at 06:43

score 2 · Accepted Answer · answered Dec 10 '17 at 20:02

Disclaimer: This code does not compute the location of the maximum. All I did was to draw the arrows and their annotation.

\documentclass{standalone}
\usepackage{tikz}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}
[
axis line style={shorten >=-10pt, shorten <=-10pt},
axis y line=center,
axis x line=middle,
no markers,
ytick={1.6 ,1.85},
yticklabels={$s(\infty)$, Consigne},
xtick={1.631},
xticklabels={$t_m$},
  xlabel style={
            anchor=west,
            at={(ticklabel* cs:1.0)},
            xshift=10pt
},
        ylabel style={
            anchor=south,
            at={(ticklabel* cs:1.0)},
            yshift=10pt
        },
xlabel=$t$,ylabel=$s(t)$,
]
\addplot+[blue, thick, domain=0:20, samples=250] {1.6-1.6*sin(x/0.01745+90)*2.718^(-0.25*x)};
\addplot+[dashed] coordinates{(0,1.6) (20,1.6)};
\addplot+[dashed] coordinates{(0,1.85) (20,1.85)};
\addplot+[dashed] coordinates{(1.631,0) (1.631,1.6)};
\draw[<->] (axis cs:2.92,1.6) -- (axis cs:2.92,2.34);
\node at (axis cs:6.5,2.2) {Overthrow};
\draw[<->] (axis cs:12,1.6) -- (axis cs:12,1.85);
\node at (axis cs:14.5,1.725) {Precision};
\end{axis}
\end{tikzpicture}
\end{document}

I also made no effort in making the arrows prettier.

Arrows showing differences in pgfplots

1 Answers1