New Forum Software: https://forum.piboso.com/index.php?topic=6568
Started by afarre, February 20, 2017, 10:29:06 am
Quote from: HornetMaX on February 22, 2017, 12:18:32 pmBut, what would you need these "splitted" accelerations for ? If your platform uses its DOF to simulate roll/pitch movements of the bike, what do you do with the acc data ?
Quote from: HornetMaX on February 22, 2017, 12:18:32 pmP.S.What do you mean with "knowing the dynamic of the cog" ? The way GPB works, there's no explicit formula for that.
Quote from: afarre on February 22, 2017, 03:01:04 pmI have been thinking over for a while on this subject, reaching following conclusion:GPB plugin acceleration data is correct, nothing to say, nothing to add. Actually it is very similar to what we get when recording real telemetry: just 3-axis acceleration data.Acceleration data is meaningless without its origin point. Comparing once again with real telemetry, we are to get different recordings at sensors located at different bike positions. The same for position and velocity but, about position, PiBoSo already clarified that it is relative to Bike Editior 0,0,0.
Quote from: afarre on February 22, 2017, 01:38:39 pmBecause besides of 3 attitude DOFs, there are other 3 position DOFs to simulate acceleratios. Example:lateral acc (m_fAccelerationX) is made up, among others, of lateral cenripeta when cornering and lateral acc due the lateral shift of CG when leaning. First one is to be simulated with roll DOF, second one is to be simulated with lateral position DOF.
Quote from: HornetMaX on February 22, 2017, 03:20:10 pmLet's assume (wild simplification) that instead of a bike we have a single wheel that can lean (something like an unicycle), always touching the track.the wheel is running straight, being vertical, at constant speed.Now the wheel leans right and starts a right turn. What you say is: I have two acceleration components, one due to the trajectory of the contact patch (the turn) and one due to the lean.
Quote from: HornetMaX on February 22, 2017, 03:20:10 pmYou would like to make your platform roll with the "trajectory" component and move (left/right) with the "lean" component ? I'm not sure it makes any sense. The rider feels one accelaration, no two (or more).
Quote from: HornetMaX on February 22, 2017, 03:20:10 pmAlso, I don't see how your "lateral DOF" can possibly simulate an acceleration, especially if the acceleration is sustained. What would you have , a 30cm movement to the right each time the bike rolls right ?!
Quote from: afarre on February 22, 2017, 01:41:26 pmNoooo, I meant the cog moving point, I meant knowing cog in real time, for example as an extra data to SPluginsBikeData_t.BTW: I am not sure I really need it, just give some more time to play with available data