Robotics Pid Control — Free Robotics Tutorial

TL;DR: Learn Robotics Pid Control in Robotics with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

Robotics Pid Control in Robotics

PID (Proportional, Integral, Derivative) is a control algorithm that adjusts output based on error from a target. Example: maintain constant speed despite obstacles.

P (proportional) term: error × Kp. Larger error = larger correction. I (integral) term: sum of past errors. D (derivative) term: rate of change of error. Together, PID smooths and stabilizes control.

Tuning: start with P only, add I if error doesn't converge, add D if output oscillates. Values (Kp, Ki, Kd) are specific to each system.

// Simplified PID
float error = targetSpeed - currentSpeed;
float pTerm = Kp * error;
float iTerm = Ki * (integral + error);
float dTerm = Kd * (error - lastError);

int output = pTerm + iTerm + dTerm;
integral += error;
lastError = error;

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