started working on prototype design. wrote a python script for computing radius and position of optimally placed outside storage columns

master
Simon Pirkelmann 2019-08-26 23:49:10 +02:00
commit 3398f44be0
3 changed files with 190 additions and 0 deletions

90
prototype/circles.py Normal file
View File

@ -0,0 +1,90 @@
from casadi import *
import matplotlib.pyplot as plt
file = open('tmp2019_cci_08_26_11_36_00.txt')
c = (0.0, 0.0) # center of big circle
R = 15.0 # radius of big circle
# center for smaller circles
p1 = (-5.55287862, -7.64288174)
p2 = (5.55287862, -7.64288174)
p3 = (-8.98474635, 2.91932105)
p4 = (8.98474635, 2.91932105)
p5 = (0.00000000, 9.44712138)
rtilde = 5.5 # radius of smaller circles
points = [p1, p2, p3, p4, p5]
# midpoint between center of two circles
m = np.mean([p1, p2], axis=0)
# vector in direction of midpoint
v = m - np.array(c)
v = v/np.linalg.norm(v)
plt.xlim((-16, 16))
plt.ylim((-16, 16))
plt.gca().set_aspect('equal', 'box')
for p in points:
plt.plot(p[0], p[1], 'o')
circle = plt.Circle(p, rtilde, fill=False)
plt.gca().add_artist(circle)
circle = plt.Circle(c, R, fill=False)
plt.gca().add_artist(circle)
#plt.show()
plt.plot(c[0], c[1], 'o')
plt.plot(m[0], m[1], 'o')
opti = casadi.Opti()
r = opti.variable(1) # radius of new circle
p = opti.variable(2) # center of new circle
#v1 = opti.variable(2) # direction vector from
#v2 = opti.variable(2)
lamb = opti.variable(1)
opti.minimize(-r)
opti.subject_to(p == c + v * lamb)
opti.subject_to((p[0] - p1[0])**2 + (p[1] - p1[1])**2 >= (rtilde + r)**2)
#opti.subject_to(p == (rtilde + r) * v1 + p1)
#opti.subject_to(p == (rtilde + r) * v2 + p2)
#opti.subject_to((v1[0]**2+v1[1]**2)**0.5 == 1)
#opti.subject_to((v2[0]**2+v2[1]**2)**0.5 == 1)
opti.subject_to(R == lamb + r)
opti.subject_to(r >= 0)
opti.subject_to(r <= R)
#opti.subject_to(lamb >= 0.6 * R)
opti.solver('ipopt')
init_r = 0.1
init_lamb = R - init_r
init_p = c + v * init_lamb
opti.set_initial(r, init_r)
opti.set_initial(p, init_p)
opti.set_initial(lamb, init_lamb)
#opti.set_initial(v1, )
sol = opti.solve()
p = sol.value(p)
r = sol.value(r)
lamb = sol.value(lamb)
print("p = {}".format(p))
print("r = {}".format(r))
print("lambda = {}".format(lamb))
print("v = {}".format(v))
plt.plot(p[0], p[1], 'o')
circle = plt.Circle(p, r, fill=False)
plt.gca().add_artist(circle)
plt.show()
pass

View File

@ -0,0 +1,95 @@
%!PS-Adobe-3.0 EPSF-3.0
%%Title: /srv/http/htdocs/packing/tmp/tmp2019_cci_08_26_11_36_00.ps
%%Creator: nicefig-2.0
%%Pages: 1
%%BoundingBox: 40 250 580 790
%%DocumentProcessColors: Cyan Magenta Yellow Black
%%CreationDate: 26-Aug-2019 11:36:00
%%DocumentFonts: Courier
%%+ Courier-Bold
%%+ Helvetica
%%+ Helvetica-Oblique
%%+ Symbol
%%EndComments
%%EndProlog
20 dict begin
gsave
/g { setgray } bind def
/rgb { setrgbcolor } bind def
/np { newpath } bind def
/m { moveto } bind def
/rm { rmoveto } bind def
/l { lineto } bind def
/rl { rlineto } bind def
/c { curveto } bind def
/s { stroke } bind def
/f { closepath fill } bind def
/la { setlinejoin setlinecap 1.0417 mul setlinewidth } bind def
/lc { setlinecap } bind def
/lj { setlinejoin } bind def
/ld { setdash } bind def
/lw { setlinewidth } bind def
/font { findfont exch scalefont setfont } bind def
/rgh { dup stringwidth pop neg 0 rm } bind def
/ctr { dup stringwidth pop 2 div neg 0 rm } bind def
1 lj 1 lc 0.200 lw
%
0.400 lw
%
% box
%
310.000 520.000 250.000 0 360 arc s
%
% circles
%
1.000 0.843 0.000 rgb
309.119 392.619 m 217.452 392.619 91.667 0 360 arc f
0.000 0.000 0.000 rgb
1.000 0.843 0.000 rgb
494.215 392.619 m 402.548 392.619 91.667 0 360 arc f
0.000 0.000 0.000 rgb
1.000 0.843 0.000 rgb
251.921 568.655 m 160.254 568.655 91.667 0 360 arc f
0.000 0.000 0.000 rgb
1.000 0.843 0.000 rgb
551.412 568.655 m 459.746 568.655 91.667 0 360 arc f
0.000 0.000 0.000 rgb
1.000 0.843 0.000 rgb
401.667 677.452 m 310.000 677.452 91.667 0 360 arc f
0.000 0.000 0.000 rgb
0.000 0.000 0.000 rgb
217.452 392.619 91.667 0 360 arc s
0.000 0.000 0.000 rgb
402.548 392.619 91.667 0 360 arc s
0.000 0.000 0.000 rgb
160.254 568.655 91.667 0 360 arc s
0.000 0.000 0.000 rgb
459.746 568.655 91.667 0 360 arc s
0.000 0.000 0.000 rgb
310.000 677.452 91.667 0 360 arc s
%
% centers
%
218.580 392.619 m 217.452 392.619 1.128 0 360 arc f
403.676 392.619 m 402.548 392.619 1.128 0 360 arc f
161.383 568.655 m 160.254 568.655 1.128 0 360 arc f
460.874 568.655 m 459.746 568.655 1.128 0 360 arc f
311.128 677.452 m 310.000 677.452 1.128 0 360 arc f
%
12.00 /Courier font
70.000 251.000 m (www.packomania.com) show
12.00 /Symbol font
430.000 250.000 m (Ó) show
12.00 /Courier font
442.000 251.000 m (E.S) show
9.00 /Courier font
464.000 251.000 m (PECHT) show
500.000 251.000 m (26-AUG-2019) show
showpage
grestore end
%%Trailer
%%EOF

View File

@ -0,0 +1,5 @@
1 -5.55287862 -7.64288174
2 5.55287862 -7.64288174
3 -8.98474635 2.91932105
4 8.98474635 2.91932105
5 0.00000000 9.44712138