hello all
I’m using the “BikeModel3D”.
I have questions that how can I import the pedal force data collected from load cell? The data is corresponding to crank angle.
And where can I adjust the leg length of human model? I only change the leg length on “LegTD\StandardParameters”, but I can’t find the obvious different on the result data. So, is there has other part need to adjust too?
When I adjust the “SaddleHeight” to 83, it was break. And lower to 82, the knee flexion angle is far to 180 degree. The knee joint can’t extend to 180 degree?
Usually when we have to supply load measured from force transducers to the model we do in the following way
[ol]
[li]Create a segment representing the force transducer
[/li][li]Create kinematic links to the environment so that the transducer is controlled kinematically, swicth off all reactions.
[/li][li]Make sure the transducer segment coordinate system is as transducer in lab
[/li][li]Apply the measured forces to the transducer segment
[/li][li]Create reactions between the transducer and foot using a AnyReacForce element
[/li][/ol]
For adjusting the size of the model have a look in a model like the “StandingModelScalingdisplay” from the repository, there is also a tutorial on the subject.
If you try to drive the model in a way which will stretch the leg more that it can it will stop with a kinematic error, simply because it can not reach the pedals.
If you want to avoid this you would have to use the overdetermined kinematic solver like in the GaitLoweExtremity model. This would allow you to make the hip rotate sideways if the leg was not long enough, or extend the ankle joint further.