Mercurial Mercurial > digital_control / annotate
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
python/desired.py
author Puneeth Chaganti <punchagan@fossee.in>
Fri, 27 May 2011 14:24:59 +0530
changeset 0 0efde00f9229
permissions -rw-r--r--
Initial commit.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     1
 
#!/usr/bin/python
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     2
 
# 9.4
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     3
 
import scipy as sp
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     4
 
def desired(Ts,rise,epsilon):
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     5
 
    Nr = rise/Ts
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     6
 
    omega = sp.pi/2/Nr
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     7
 
    rho = epsilon**(omega/sp.pi)
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     8
 
    phi = sp.array([1 -2*rho*sp.cos(omega), rho**2])
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
     9
 
    dphi = len(phi)-1
0efde00f9229 Initial commit.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff changeset 
    10
 
    return phi, dphi
Digital Control