Jonathan Zhao Pedal Ideas

Rough Idea:

Open

Open

Some ideas for attaching pot to pedal: (this image won’t rotate… sorry)

Open

Requirements:

how to get accurate position reading?

• rotary potentiometer

  • adjusts voltage output based on rotation, and combine with a PCB and power source to step up the voltage

  • to mount, create a mount for the potentiometer and connect the actuator to the point of rotation of the pedal

• rotary encoder

  • provides signals to describe direction of rotation as well as magnitude

  • microcontroller

    • reads the signals and outputs a voltage based on the signals

  • PCB

    • takes the output voltages from the microcontroller and steps it up using a power source

How to provide force feedback in a pedal?

• spring

  • is attached behind the pedal to apply an opposing force

• master cylinder

  • naturally provides a little bit of resistance, though this is likely not enough

What is a master cylinder and how does it work?

• has fluid inside causing a pressure increase once compressed, which moves pistons to activate the breaking mechanism

what angular range should we experience?

• 20°

  • resting position of 30° to the vertical

what is the nominal load you should expect to apply with a foot?

• 20lbs for accelerator, 50lbs for brake

How does angular displacement → linear displacement

• having to rotating points allows for converting angular to linear displacement

  • (see rough idea image at the top of this page)