Question

If a multirotor begins to oscillate rapidly during flight, which PID parameter should be decreased to reduce the over-correction caused by excessive responsiveness to sensor input?

Accepted Answer

The PID parameter that should be decreased to reduce rapid oscillations caused by over-correction is the Proportional gain, often referred to as P-gain. In a flight controller, the P-term is responsible for the immediate reaction to an error, which is the difference between the desired flight angle and the actual angle measured by the gyroscope sensors. When the P-gain is set too high, the flight controller responds with excessive force to even the smallest detected error, causing the motors to over-shoot the target position. This over-shooting results in the multirotor constantly swinging back and forth around its intended orientation, creating the high-frequency vibrations known as oscillations. By decreasing the P-gain, you reduce the sensitivity of the controller to these errors, forcing the system to respond with less aggressive inputs and stabilizing the flight path.

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If a multirotor begins to oscillate rapidly during flight, which PID parameter should be decreased to reduce the over-correction caused by excessive responsiveness to sensor input?

The PID parameter that should be decreased to reduce rapid oscillations caused by over-correction is the Proportional gain, often referred to as P-gain. In a flight controller, the P-term is responsible for the immediate reaction to an error, which is the differenc....