| Comments on CHRONO example car_controllable_4springs.r3d |
| A complex mechanism... |
|
What to do:
load the file, select the 'controls' object in the select window,
open its panel (you will see three Chrono sliders), then
press the play button on the animation timeline and drive the car.
Best enjoyed if anim is in 'loop' mode, so you can drive as much as you want... |
This example demonstrates how you can control parts of mechanisms during the
simulation (namely, you will control the steer, the throttle and the brake with
three sliders). Therefore, you can also drive simulated vehicles.
This simulated car is somewhat simple (brakes act only on forward wheels, etc.)
but already includes nice suspension effects. You can also test what happens if you
modify the stiffness of the springs, or if you change the position of the
center of mass, and so on.
In this example, off-road unevenness is simulated: few steps are modeled
by means of cube objects. You can try driving the car over these steps
and see that the car will bounce as with real suspensions.
Interesting note: the two cylinder links which simulate the McPherson
anterior sunspensions feature upper and lower limits on the Z axis, so
that the nose of the car cannot dive too much (otherwise the springs, which
are somewhat soft, would allow too high vertical excursion), as happens
in real car with elastic bumpers.
Old computers may simulate it slowly, but on fast computers you will get
a realtime simulation even with OpenGL effects turned on.
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Unlike the other car_controllable.r3d example, this one simulates also
the rear suspensions.
© DeltaKnowledge 2007