Universal Pedal Design
- Jonathan Xie
Requirement | For… | Description | Reasoning |
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Floor Mounting | Both | Pedal should be easily and rigidly mounted to a rigid floor panel |
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Travel Range | Both | Pedal should have a full angular range of travel of at least 20 degrees | You want a large operating range to work with, so you’re not working with micro |
Mechanical Advantage | Both | The driver should be able to fully activate the mechanism with <=70lb of force |
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Ergonomics | Both | The driver’s foot should be able to easily/ergonomically apply force over the entire travel range of the pedal |
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Force resistance / springback | Both | The pedal should provide substantial resistance during operation (can be constant or linear) |
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Springback | Both | The pedal should return to its un-pressed position when force not applied |
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Angular Measurement | Accelerator (ideally brakes too) | The pedal shall measure its angular position and output the result to a controller board, with a measurement resolution of at least 0.5 degrees |
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Limit switch | Ideally both | The pedal should incorporate a limit switch that measures whether or not the pedal is depressed. Ideally, the threshold for limit switch activation should be easy to adjust/tune |
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To-Do Stuff
Read this page, it shows the cad and has good details for background info
Research:
how to get accurate position reading? @waleed
angular readings/sensors?
linear displacement readings/sensors?
How to provide force feedback in a pedal? @zahedan
What is a master cylinder and how does it work? @thea
what angular range should we experience? @jonathanzhou
what is the nominal load you should expect to apply with a foot?
How does angular displacement → linear placement
EVERYONE: how does a real car pedal work?
Other student team pedals - how do they do it? (Formula SAE, Formula Electric, Baja, other solar car teams, sim racing)