I'm trying to replicate this block diagram but I'm having trouble with certain details. This is the block diagram that I'm trying to replicate:
This is what I have:
I just need help in with the letters in the blocks I can't manage to put one word under another, also I want to make the arrows line and head a little more bold and thick and finally I need to find a way to write something at the right side of the arrows.
Here is the code for the second figure:
\documentclass{beamer}
\usetheme{Boadilla}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usepackage{mathtools}
\usetikzlibrary{shapes,arrows}
\usepackage{subfig}
\usepackage{babel,blindtext}
\usepackage{subcaption}
\usefonttheme{professionalfonts} % using non standard fonts for beamer
\usefonttheme{serif} % default family is serif
% \title{Ejemplo de Diseño de un Controlador}
\author{Julio Ortegón}
% \institute{Universidad de los Andes}
\date{}
\begin{document}
\maketitle
\begin{frame}{}
\centering
\bigskip
\bigskip
\tikzstyle{block} = [draw, fill=white, rectangle,
minimum height=3em, minimum width=6em ]
\tikzstyle{Fi} = [coordinate]
\tikzstyle{Rd} = [coordinate]
\tikzstyle{Qd} = [coordinate]
\tikzstyle{Qa} = [coordinate]
\tikzstyle{Wd} = [coordinate]
\tikzstyle{QCHP} = [coordinate]
\tikzstyle{aRQ} = [coordinate]
\tikzstyle{pinstyle} = [pin edge={to-,ultra thick,black}]
\begin{tikzpicture}[auto, node distance=2cm,>=latex']
%Declara los nodos
\node [Fi, name=Fi] {};
\node [block, right of=Fi] (CHP) {\textbf{CHP} $n_W,n_Q$ };
\node [QCHP, name =QCHP, right of=CHP,node distance = 2.5 cm] {};
\node [Qa,name=Qa, right of=QCHP, node distance = 2.5cm,label={right:$Q_a$}] {};
\node[aRQ,name=aRQ,above of=Qa, node distance = 1.5cm]{};
\node [block, right of=aRQ,node distance = 1.2cm] (WARG) {\textbf{WARG} };
\node[Rd,name=Rd, right of=WARG, node distance = 2cm,label={right:$R_d$}] {};
\node[Qd,name=Qd,below of=Qa,node distance = 1.5cm, right = 3.25cm,label={right:$Q_d$}]{};
\node[Wd,name=Wd,below of=Qd,node distance = 1.5cm, right = 0.1cm,label={right:$W_d$}]{};
% \draw [->] (Controller1) -- node[name= ] {$ $} (system);
% \node [output, right of=system] (output) {};
% \node [block, below = 2 cm, right = 4cm] (Controller2) {$1+sK_h$};
%Ahora conectamos los bloques
\draw [draw,->] (Fi) -- node {$F_i$} (CHP);
\draw [->] (CHP) -- node {$Q^{\text{CHP}}$} (QCHP);
\draw [->] (QCHP) -- node {$\alpha^{\text{CHP}}_{\text{aQ}}Q^{\text{CHP}}$} (Qa);
\draw [->] (QCHP) |- node {$\qquad\qquad\qquad\;\; \alpha^{\text{CHP}}_{\text{RQ}}Q^{\text{CHP}}$} (aRQ);
\draw [->] (WARG) -- node {} (Rd);
\draw [->] (QCHP) |- node {$\qquad\qquad\qquad\;\; \alpha^{\text{CHP}}_{\text{QQ}}Q^{\text{CHP}}$} (Qd);
\draw [->] (CHP) |- node {$\qquad\qquad\qquad\qquad\qquad\; W^{\text{CHP}}$} (Wd);
\end{tikzpicture}
\end{frame}
\end{document}
I appreciate the help.
Best Answer
I would suggest a few improvements of your code.
First, I would use
\tikzsetinstead of\tikzstyle, since it is much easier to define multiple styles this way.Second, instead of using empty nodes that you style as
coordinates, you can directly define\coordinates at a certain position and name them using(name). This naming technique also works with nodes.Then, in order to later easier place the label nodes, I added two helper coordinates. I also adjusted the alignments of the
WARGand theWdnodes.You can align nodes on paths using the
pos,above,below,rightorleftoptions and by placing them at the right position in the path: If you place the node last, it will be put at the end of the path. You can place multiple nodes on one path.To have a line break inside a node, you need to set its alignment using the
alignoption. Then you can use\\to insert a forced line break.