it is possible to add more User Defined Variables?

[g_francesco]

I'm new to these sw, and i dont undrerstand, if it is possible to add more of these variables. I have already used 25. If not, does exist another way to fix my trouble?


Francesco

[osborni]

Er, what do you need 25 for?

[g_francesco]

i want to add more user defined variables, it is possible?

[osborni]

Not that I know of, but I really curious as to why you need more than 25. Are you using variables instead of constants? List them out?

[g_francesco]

i have allready use:

Shock FR,FL,RL,RR differentiate by time. (4)
Longitudinal velocity Derivate
Lateral velocity v from ax
Lateral velocity v from ay
beta from ax
beta from ay
Differential input
Gear no neutral
Slip angle 1
Slip angle 2
Yaw from yaw rate
Yaw offset
Bump FR,FL,RR;RL (4)
Camber FR,FL,RR,RL(4)
Toe degree FR;FL(2)

i need two more variables, and i don't know any other way .

[osborni]

How are you measuring camber and toe? Those are static unless you are measuring dynamic changes from shock measurements.... Are you using those as constants for other calculations? Can't you use car constants?

Car distance, speed and acceleration are all native, no need to differentiate or integrate anything to get the others.

V from ax/ay - are you on a bike? Might you mean lateral acceleration? That's also native....

I can see the shock ones. Are you measuring displacement and want to find velocity?

Slip angles - do you have the gyro upgrade? I'd love to see your math. I've been noodling this one for a while but haven't opened up a text to figure it out yet.... (I don't have the gyro...)

I've also been looking at some ready made gyros from sparkfun.com

[924RACR]

I'm guessing with some of the stuff (like velocities from ax and ay, likewise multiple yaw rates and slip angles) he's looking to compare different modeling results vs. actual...

I'm surprised there's a limit on # of variables... maybe this is improved in 8? I have only a more normal/moderate number of inputs, so checking it in the Beta is a little tougher...

[DMKMM]

How are you measuring camber and toe?

+1

[924RACR]

Knowing your steering angle, shock position, and camber and toe curves, it should be a relatively straightforward calculation for live camber and toe...

[DMKMM]

true... guess i was over thinking it, was picturing a inclinometer on the spindle or something.

im not much for "calculated results" i tend to try and eliminate as many variables as i can, dont like introducing the potential for more error, ie getting a reliable result from different sensors

[osborni]

I just did a little experiment.

You can use the "External Inputs" as if they are a "user Defined Variable". that give 20 more.

Still not sure why that many are needed though......