Arduino-PID-Library issues

No License File Included

I am using portions of this code to create a Node-RED node for PID control and want to give proper attribution, but there is no license file in this repository....

ebarrieau

Backcalculate integral sum into feasible range

1

Remove excess integral windup per Astrom, K.J. and Rundqwist, L. (1989). "Integrator windup and how to avoid it" (PDF). Proc. 1989 Am. Control Confi.: 1693–1698. through using code by Will...

drf5n

Output is nan after several hours of successful running

3

Full code is [20220308_my_working_kiln_more_logging_reduce_memory.zip](https://github.com/br3ttb/Arduino-PID-Library/files/8309999/20220308_my_working_kiln_more_logging_reduce_memory.zip) but most relevant bits pasted here. I'm controlling a relay to heat a kiln, and it works perfectly for a few hours, but then after about...

bellabrez

Is the calculated PID result relative to the previous value or absolute on its own?

2

Hi Brett, first thanks for your trouble to do this. Im writing code to make a treadmill motor run at constant speed irrespective of the load. The code is for...

happymacer

When the tunings are changed, it might be good to reset the integrals.

9

Hello, when the tunings are changed, it might be good to reset the integrals. Code: https://github.com/br3ttb/Arduino-PID-Library/blob/master/examples/PID_AdaptiveTunings/PID_AdaptiveTunings.ino ```C++ myPID.SetMode(MANUAL); Output = 0; myPID.SetMode(AUTOMATIC); ``` Ref.: https://forum.arduino.cc/t/using-arduino-pid-library-reseting-integrals/296451

rtek1000

Add deadband

1

Create a dual-sided deadband around the desired setpoint to prevent noisy feedback from producing control jitters This is disabled by setting deadband to zero, something like: ``` if (Math.Abs(error) deadband)...

mrx23dot

Expose integral for user-space anti-windup access

5

This code adds double GetIntegral(void) ; // returns the internal state of the integrator void SetIntegral(double) ; // Sets the internal state of the integrator example/PID_SimulatedHeater/PID_SimulatedHeater.ino // a simulation of...

drf5n

Is there an Overflow in PID_RelayOutput.ino?

2

Hello, I noticed that the sum of the value in the windowStartTime variable occurs, but it seems to me that it is not restarted, so in a moment it seems...

rtek1000