Accelerometer graphs
- understeer: car steers less than what the driver commands
- oversteer: car steers more than what the driver commands
More information regarding the cornering equation: https://the-contact-patch.com/book/road/c0418-oversteer-and-understeer#:~:text=The%20cornering%20equation&text=It%20is%20known%20as%20the,is%20positive%20the%20car%20oversteers.
Channel grouping for understeer/oversteer should have speed, throttle position, front lateral g-force, real lateral g-force, steering angle, understeer angle (p.17)
- yaw(z): deviation of the vehicle shifting from its center of gravity to the left or right
Formulas and Conversions(using a difference in values from the rear and front accelerometers)
Yaw: https://folk.ntnu.no/skoge/prost/proceedings/acc05/PDFs/Papers/0080_WeA14_1.pdf
Box Notes Chapter 2 Data Analysis Software Requirements Page 9: Run chart of average understeer per lap of a complete race with 3 drivers on the same car. There is a clear trend of more oversteer (lower understeer angle average) for Driver 1 and Driver 3. Driver 2 develops more understeer over time. Y axis: Average understeer angle. X-axis: Lap number of Driver 1, 2, & 3
How will we use accelerometers(measures change in lateral acceleration) to create graphs?
- Find conversion equation & make branch
- Formulas
- Variables and what they mean
- Conversions to voltage. For week of 11/6: Find accelerometer voltage to 1 gs(acceleration due to gravity) conversion factor.
- repoanalysis.pi in suspension chat is similar to what we will eventually create
https://docs.google.com/document/d/1_fidMWVLfrOnF4fDY4o1vkidVaPARguwYr-a5hkvZio/edit