<p>I'm afraid there is no simple answer to this question. Adding weight to the quad will change the way it responds so in theory you would need to redo the tune from scratch.</p>

<p>That being said, there are a few assumptions you can make.
Since the weight goes up, the inertia goes up as well. So it will respond slower to stick movements and will have a bigger tendency to overshoot. To compensate for the slower reaction you can increase the P-gain and/or feedforward. To fight the overshoot (and the effect of the bigger P-gain) you will need to increase the D-gain as well.
I assume I-gain will not be impacted a lot.</p>

CC BY-SA 4.0
2020-06-17T13:59:42.980Z
2020-06-17T13:59:42.980Z
Flyback FPV
<p>How should you adjust the PID values if you add weight to a quadcopter (For example a GoPro), so that the flight characteristics stay as close as possible to how they were before?</p>

<p>I assume that the Feed forward values has to be increased, probably more on the axis with the highest angular mass. But do you have to change for example the I gain as well if the added weight introduces more drifting?</p>

CC BY-SA 4.0
2020-07-22T01:29:20.520Z
This is a good question, but it needs a ton more specifics since it's highly dependent both on the distribution of the mass as well as what you'd like to control. Finally, the control scheme you're using plays a major role because *what* are those PID values you'd like to tune referring to?
Kenn Sebesta
<quadcopters><pid-tuning>
How do you use the PID controller to compensate for a higher weight?
Hannes Hultergård
# How do you use the PID controller to compensate for a higher weight?

(Asked by: username_0 on 2020-06-14)

How should you adjust the PID values if you add weight to a quadcopter (For example a GoPro), so that the flight characteristics stay as close as possible to how they were before?

I assume that the Feed forward values has to be increased, probably more on the axis with the highest angular mass. But do you have to change for example the I gain as well if the added weight introduces more drifting?

**Tags:** quadcopters, pid-tuning

> **Comments:**
> **username_1**: This is a good question, but it needs a ton more specifics since it's highly dependent both on the distribution of the mass as well as what you'd like to control. Finally, the control scheme you're using plays a major role because *what* are those PID values you'd like to tune referring to?  

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## 1 answers

### Answer by username_2 on 2020-06-17. Score: 4

I'm afraid there is no simple answer to this question. Adding weight to the quad will change the way it responds so in theory you would need to redo the tune from scratch.

That being said, there are a few assumptions you can make.
Since the weight goes up, the inertia goes up as well. So it will respond slower to stick movements and will have a bigger tendency to overshoot. To compensate for the slower reaction you can increase the P-gain and/or feedforward. To fight the overshoot (and the effect of the bigger P-gain) you will need to increase the D-gain as well.
I assume I-gain will not be impacted a lot.


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