One Pedal Driving / Reverse Button

[Spb2005]

Variant

HOVERCAR

Control type

FOC

Control mode

Torque

Description

I am building an electric Bobbycar that uses a single standard potentiometer for acceleration. I want it to brake automatically when releasing the accelerator, so a one-pedal operation.

Initially, I tried using voltage mode, but the braking was too aggressive. To address this, I switched to torque mode. While experimenting with the electric brake option, I encountered an issue where the system oscillates at a standstill. Adjusting the settings hasn’t resolved these oscillations.

Ideally, the braking force should not be constant but rather dependent on speed or accelerator input. A PID loop would be ideal for this behavior. By “accelerator-dependent,” I mean that if you are driving at a constant speed and release the accelerator, the braking force should depend on the difference between the current speed and the desired speed (i.e., the speed dictated by the accelerator position).

Additionally, I’d like to use the "double-brake-tap" feature with a button while disabling the standard brake input. The concern here is that leaving the brake input active and accidentally pressing the button at full speed would be disasteris.