PymateIO-PID-controler: Difference between revisions
Jump to navigation
Jump to search
| Line 4: | Line 4: | ||
The PymateIO includes the {{fname|PID}} class ({{fname|pid}} library). | The PymateIO includes the {{fname|PID}} class ({{fname|pid}} library). | ||
The PID controler do use a Timer to perform its treatments (it is an autonomous process). | The PID controler do use a Timer to perform its treatments (it is an autonomous process). | ||
| Line 23: | Line 20: | ||
The PID controller '''starts''' when setting the setpoint (see {{fname|setpoint(value)}} ) and '''stop''' when {{fname|stop()}} is called. | The PID controller '''starts''' when setting the setpoint (see {{fname|setpoint(value)}} ) and '''stop''' when {{fname|stop()}} is called. | ||
{{dbox-orange|This controller have been deployed with success into the [https://github.com/mchobby/plancha-cms Plancha-CMS project].<br /> | |||
Do not hesitate to read the [https://github.com/mchobby/plancha-cms/blob/main/examples/test_pid.py test_pid.py] of Plancha-CMS for implementation example.}} | |||
{{dbox-gray|1=A typical application of PID would be speed regulation: | {{dbox-gray|1=A typical application of PID would be speed regulation: | ||
Revision as of 02:17, 30 June 2026
Software PID
The PymateIO includes the PID class (pid library).
The PID controler do use a Timer to perform its treatments (it is an autonomous process).
As for each PID Controller, the following parameter are required:
- Kp : Proportional constant
- Ki : Integral constant
- Kd : Derivated constant
The software controller requires additional parameters:
- dt: time (ms) between two consecutive measurement
- measure_func : the function that returns the PID input value.
- output_func : the function(value) called by the PID controler to set the output.
- output_min : minimal value for the output.
- output_max : maximal value for the output.
The PID controller starts when setting the setpoint (see setpoint(value) ) and stop when stop() is called.
This controller have been deployed with success into the Plancha-CMS project.
Do not hesitate to read the test_pid.py of Plancha-CMS for implementation example.
Do not hesitate to read the test_pid.py of Plancha-CMS for implementation example.
A typical application of PID would be speed regulation:
- Kp, Ki, Kd : to determine
- dt = 100ms
- measurement_func : returns the RPM
- output_func : set the PWM duty cycle (in percent)
- output_min : 0
- output_max : 100
PymateIO all right reserved © 2026 - Written by MCHobby for PymateIO