So, it’s going to have to increase and decrease power to its motors to maintain the desired speed.

因此，它将不得不增加和减少其电机的功率以保持所需的速度。

Using the robot's speed sensor, we can keep track of its actual speed and plot that alongside its desired speed.

用机器人的速度传感器，我们可以把当前速度和目标速度画张图。