Jason K. Moore

It is possible to select Euler angles that exhibit gimbal lock for the T-handle. Just try some others and check the rotation matrices or calculate the kinematical differential equations in...

I see you what you mean. Yes there is the physical manifestation in a real gimbal and the mathematical manifestation that results in singularities in our description of the system....

@chrismo-schmidt would you like to double check these? I made some changes and took the final measurements so the rider can sit on the bike.

Resulting figures:  Resulting parameters without rider: ``` {'IBxx': 1.14925449488747, 'IBxz': 0.05719397280279859, 'IByy': 3.1019340904048214, 'IBzz': 2.0895833926673024, 'IFxx': 0.09947076116547277, 'IFyy': 0.19230532606494322, 'IFzz': 0.09947076116547277, 'IHxx': 0.3113335653577265, 'IHxz': -0.051328838578187846, 'IHyy': 0.2566995843845019, 'IHzz': 0.06539535254969839,...

Test script: ```python import pprint import numpy as np import matplotlib.pyplot as plt import bicycleparameters as bp from bicycleparameters.parameter_sets import Meijaard2007ParameterSet from bicycleparameters.models import Meijaard2007Model data_dir = "/home/moorepants/Data/bicycle-parameters" v =...

It does look like it is failing to draw the inertia ellipsoid of the handelbar.

If I truncate the pendulum period measurements the fork decayed oscillation fits are signficantly poorer, this must result in the inertia of the fork not being quite right and thus...

I'm now thinking that the fork inertia values could just be erroneous. I measured the Crescendo years back which has a very similar fork, including a fender+light. The ellipsoid for...

Here are the final results (based on not truncating the period time series if the measurement has a time variable in the mat file). Test script: ```python import pprint import...

I made this script for the balance assist bike and it would be nice to output similar info for all the other bikes: ```python import pprint import numpy as np...