https://github.com/darkfanxing/genetic-algorithm-with-pid-control-system

A PID Control System with Genetic Algorithm
https://github.com/darkfanxing/genetic-algorithm-with-pid-control-system

genetics pid-controller python397

Last synced: 6 months ago
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A PID Control System with Genetic Algorithm

• Host: GitHub
• URL: https://github.com/darkfanxing/genetic-algorithm-with-pid-control-system
• Owner: darkfanxing
• License: mit
• Created: 2022-06-01T17:53:09.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2022-06-06T08:28:01.000Z (over 3 years ago)
• Last Synced: 2025-03-28T07:22:23.195Z (6 months ago)
• Topics: genetics, pid-controller, python397
• Language: Jupyter Notebook
• Homepage:
• Size: 59.6 KB
• Stars: 6
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Genetic Algorithm with PID Control system

## 1. Control System I used

### 1.1 Control System

![](https://i.imgur.com/uD6GOUn.png)

### 1.3 The Input of The Control System

- 4 periods of standard rectangular signal

- Each period was cut into 60 pieces (ticks)

### 1.2 The Output And PID Setting of The Control System

![](https://i.imgur.com/aAwXYRa.png)

## 2. Execute Project

### 2.1 Environment Setup

```

pip install pipenv

pipenv shell --python 3.9

pipenv install

```

### 2.2 Run the Project

Open the `src/main.ipynb` file, and run all cells

## 3. Results

The result table is based on the following settings of genetic algorithm:

1. `population number`: 50

2. `iteration number`: 100

3. `mutation probability`: 0.1

4. `crossover rate`: 0.9

5.  `PID value boundary`: [0, 1]

6.  `eta value boundary`: [0.30001, 0.69999]

7.  `fitness function`:

    ![](https://i.imgur.com/y0XF8TL.png?)

| Control System Output                | Chromosome Value                                     | Control System Setting                          |

| --                                   | --                                                   | --                                              |

| ![](https://i.imgur.com/PpCHRmo.png) | P / I / D / eta:
0.990 / 0.249 / 0.021 / 0.3001 | initial_y_now / u_boundary:
-2 / [-20, 20] |

| ![](https://i.imgur.com/WvvNBCY.png) | P / I / D / eta:
1.000 / 0.301 / 0.025 / 0.3001 | initial_y_now / u_boundary:
0 / [-20, 20]  |

| ![](https://i.imgur.com/MIhFG1P.png) | P / I / D / eta:
1.000 / 0.269 / 0.012 / 0.3001 | initial_y_now / u_boundary:
2 / [-20, 20]  |

| ![](https://i.imgur.com/r45zWmu.png) | P / I / D / eta:
0.938 / 0.249 / 0.030 / 0.3001 | initial_y_now / u_boundary:
-2 / [-50, 50] |

| ![](https://i.imgur.com/tMVETpy.png) | P / I / D / eta:
1.000 / 0.257 / 0.000 / 0.3001 | initial_y_now / u_boundary:
0 / [-50, 50]  |

| ![](https://i.imgur.com/EPgnP2n.png) | P / I / D / eta:
1.000 / 0.251 / 0.006 / 0.3001 | initial_y_now / u_boundary:
2 / [-50, 50]  |