7

As you can see the left side of the 3 lower blocks are moved to the right while keeping their right sides aligned with the right side of the first block.

sample image

I'm using the following code:

\documentclass[tikz,border=3.14mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{positioning}
\usetikzlibrary{decorations.markings}
\begin{document}

\begin{tikzpicture}[auto, node distance=2cm,>=latex,block/.style={draw, fill=white, rectangle, 
    minimum height=3em, minimum width=6em}]
 \node[block] (A) {$\frac{1}{sT_E}$};
 \node[circle, draw, left =of A] (B) {$\Sigma$};
 \node[circle, draw, right =of A] (C) {$\Pi$};
 \node[rectangle, below=0.5cm of A] (D) {$V_{Emin}$};
 \node[block, below=1.12 of C] (E) {$F_{EX}=f(l_N)$};
 \node[block, anchor=0.8, below=.5cm of D] (G) {$S_E(V_E)$};
 %\node[block, below right=.5cm and 1.1cm of G] (F) {$l_N=K_C\cdot\frac{l_{FD}}{V_E}$};
 \node[rectangle, above=.5 of A] (J) {$\frac{V_{FEmax}-K_D\cdot l_{FD}}{K_E+S_E(V_E)}$};
 \node[block, below=.5cm of G] (H) {$K_E$};
 \node[block, below=.5cm of H] (I) {$K_D$};
 \node[block] at (H -| E) (F) {$l_N=K_C\cdot\frac{l_{FD}}{V_E}$};
 \node[circle, draw, left=1 of H] (K) {$\Sigma$};
 %
 \draw[->] (A) -- (B);
 \draw[->] (A) -- node[pos=0.5,above]{$V_E$} (C);
 \draw[->] (C.0) -- ++ (1,0) node[pos=0.5,above] {$E_{FD}$};
 \draw[<-] (B.180) -- ++ (-1,0) node[pos=0.5,above] {$E_{FE}$};
 \draw[-] (A) -- (J.-40);
 \draw[-] (J.-40) -- ++ (0.6,0);
 \draw[-] (A) -- (D.140);
 \draw[-] (D.140) -- ++ (-0.6,0);
 \draw[->] (E) -- node[pos=0.5,right] {$F_{EX}$} (C);
 \draw[->] (F) -- node[pos=0.5,right] {$l_{N}$} (E);
 \draw[->] (A.0) -- ++ (0.6,0) |- (H.0);
 \draw[->] (A.0) -- ++ (0.6,0) |- (F.180);
 \draw[<-] (I.0) -- ++ (3.75,0) node[pos=0.8,below] {$I_{FD}$};
 \draw[->] (I.0) -| (F.270) ;
\end{tikzpicture}
\end{document}
  • 2
    Welcome to the site. What code are you attempting to use to obtain the result? You are expected to provide a minimum (non)working example to help use see your approach. – Steven B. Segletes Apr 26 at 16:52
  • 1
    ill edit my post. – Nip Apr 26 at 16:53
5

You can always overwrite default settings.

\documentclass[tikz,border=3.14mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{positioning}
\usetikzlibrary{decorations.markings}
\begin{document}

\begin{tikzpicture}[auto, node distance=2cm,>=latex,block/.style={draw, fill=white, rectangle, 
    minimum height=3em, minimum width=6em}]
 \node[block] (A) {$\frac{1}{sT_E}$};
 \node[circle, draw, left =of A] (B) {$\Sigma$};
 \node[circle, draw, right =of A] (C) {$\Pi$};
 \node[rectangle, below=0.5cm of A] (D) {$V_{Emin}$};
 \node[block, below=1.12 of C] (E) {$F_{EX}=f(l_N)$};
 \node[block,minimum width=5em,xshift=.5em,anchor=0.8, below=.5cm of D] (G) {$S_E(V_E)$};
 %\node[block, below right=.5cm and 1.1cm of G] (F) {$l_N=K_C\cdot\frac{l_{FD}}{V_E}$};
 \node[rectangle, above=.5 of A] (J) {$\frac{V_{FEmax}-K_D\cdot l_{FD}}{K_E+S_E(V_E)}$};
 \node[block,minimum width=5em, below=.5cm of G] (H) {$K_E$};
 \node[block,minimum width=5em, below=.5cm of H] (I) {$K_D$};
 \node[block] at (H -| E) (F) {$l_N=K_C\cdot\frac{l_{FD}}{V_E}$};
 \node[circle, draw, left=1 of H] (K) {$\Sigma$};
 %
 \draw[->] (A) -- (B);
 \draw[->] (A) -- node[pos=0.5,above]{$V_E$} (C);
 \draw[->] (C.0) -- ++ (1,0) node[pos=0.5,above] {$E_{FD}$};
 \draw[<-] (B.180) -- ++ (-1,0) node[pos=0.5,above] {$E_{FE}$};
 \draw[-] (A) -- (J.-40);
 \draw[-] (J.-40) -- ++ (0.6,0);
 \draw[-] (A) -- (D.140);
 \draw[-] (D.140) -- ++ (-0.6,0);
 \draw[->] (E) -- node[pos=0.5,right] {$F_{EX}$} (C);
 \draw[->] (F) -- node[pos=0.5,right] {$l_{N}$} (E);
 \draw[->] (A.0) -- ++ (0.6,0) |- (H.0);
 \draw[->] (A.0) -- ++ (0.6,0) |- (F.180);
 \draw[<-] (I.0) -- ++ (3.75,0) node[pos=0.8,below] {$I_{FD}$};
 \draw[->] (I.0) -| (F.270) ;
\end{tikzpicture}
\end{document}

enter image description here

Code explanation:

  • I change minimum width to 5em in the three lower nodes.
  • However, as the nodes are centered, I shift the first one of the three nodes. The other two are automatically shifted correctly.
  • Thank you! It works perfectly! – Nip Apr 26 at 18:24
9

an alternative, with using TikZ libraries calc (for calculation of middle points on edges), positioning (for positioning of nodes) and quotes (for edge labels), and the nccmath packages (for medium size of fractions). redefined are also styles for nodes:

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{calc,
                positioning,
                quotes}
\usepackage{nccmath}
\newcommand\mi[1]{\mathit{#1}}

\begin{document}
    \begin{tikzpicture}[auto,
    node distance=4mm and 22mm,
    >=latex,
    block/.style = {draw, fill=white, minimum size=9mm, minimum width=#1},
  block/.default = 16mm,
     Circ/.style = {circle, draw, minimum size=2em, inner sep=1pt}
                        ]
\node (A) [block=22mm]          {$\frac{1}{sT_E}$};
\node (B) [Circ, left =of A]    {$\Sigma$};
\node (C) [Circ, right=of A]    {$\Pi$};
\node (D) [below=5mm of A]      {$V_{E_{\min}}$};
\node (J) [above=5mm of A]      {$\mfrac{V_{\mi{FE}_{\max}}-K_D\cdot l_{\mi{FD}}}
                                        {K_E+S_E(V_E)}$};
\draw[-] (A.west |- D.north) -- ++ ( 0.6,0) -- (A)
         (A.east |- J.south) -- ++ (-0.6,0) -- (A);
\node (E) [block, below=of C |- D] {$F_{\mi{EX}}=f(l_N)$};
\node (G) [block,
           below left= 0mm of A.east |- E.west]  {$S_E(V_E)$};
\node (H) [block, below=of G]  {$K_E$};
\node (I) [block, below=of H]  {$K_D$};
\node (F) [block, at={(H -| E)}]  {$l_N=K_C\mfrac{l_{FD}}{V_E}$};
\node (K) [Circ] at ($(B |- H)!0.5!(H.west)$)   {$\Sigma$};
%
\coordinate[left=1 of B] (in);
\coordinate (aux) at ($(H.east)!0.5!(F.west)$);
\draw[->]  (in) edge["$E_{\mi{FE}}$"]   (B)
        (A)  edge               (B)
        (A)  edge["$V_E$"]      (C)
        (C.0) edge["$E_{\mi{FD}}$"] ++ (1,0)
        (E) edge["$F_{\mi{EX}}$"]   (C)
        (F) edge["$l_{N}$"]     (E)
        (F.east |- I) edge[near start,"$I_{FD}$"]   (I)
        (A -| aux) -- (aux) edge (H)
        (aux) edge (F)
        (F |- I) to (F);
\end{tikzpicture}
\end{document}

enter image description here

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