PymateIO-PID-controler: Difference between revisions

Revision as of 02:06, 30 June 2026

The PymateIO includes the PID class (pid library). This controller have been deployed with success into the Plancha-CMS project.

The PID controler do use a Time to perform its treatments.

As for each PID Controller, the following parameter are required:

The software controler 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.

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@@ Line 1: / Line 1: @@
 {{PYMATE-HEADER}}
-== Important note ==
+== Software PID ==
+The PymateIO includes the {{fname|PID}} class ({{fname|pid}} library). This controller have been deployed with success into the [https://github.com/mchobby/plancha-cms Plancha-CMS project].
+The PID controler do use a Time to perform its treatments.
+As for each PID Controller, the following parameter are required:
+* Kp : Proportional constant
+* Ki : Integral constant
+* Kd : Derivated constant
+The software controler 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 {{fname|setpoint(value)}} ) and '''stop''' when {{fname|stop()}} is called.
+{{dbox-gray| A typical application of PID would be a 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
+}}
 {{PYMATE-TRAILER}}