ZTF - Digital Control using Z-transform¶

https://raw.githubusercontent.com/rahulbhadani/ZTF/main/ztf.png

ZTF, stands for Z-domain transfer function, is a Python library to implement a transfer function based system for system modeling, and control.

Installation¶

pip install ZTF

Quick Start¶

We can implement a PID controller block that takes a timeseries input in the loop and outputs controlled value in open-loop setting

from ZTF import PID
import math
import time

P = 12.2285752621432
I = 7.40871870543199
D = 4.88097496311707
N = 37.0569659936971
Ts = 0.05

pid = PID(P, I, D, N, Ts)
start_time = time.time()
out = 0
x = 0

print("Input, Output")
while True:
    elapsed_time = time.time() - start_time
    if elapsed_time >= 10.0:
        break

    t = elapsed_time
    x = 3 * math.sin(t)
    out = pid.processing(x)
    print("{}, {}".format(x, out))
    time.sleep(Ts)

Contributing to the project¶

Feel free to submit an issue or send us an email. If you like to contribute to this project, please fork this repository to your GitHub account, create a new branch for yourself and send a pull request for the merge. After reviewing the changes, we will decide if this is a good place to add your changes. Your help to improve ZTF is highly appreciated.

Licensing¶

License: MIT License
Copyright Rahul Bhadani
Initial Date: Feb 06, 2023
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files
(the “Software”), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject
to the following conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
OR OTHER DEALINGS IN THE SOFTWARE.