model_states.OsimMuscleStates

Created on Sun Feb 20 21:43:21 2022

@author: hwang

Module Contents

Classes

OsimMuscleStates

A class to extract the muscle states (moment arms and force properites)

class model_states.OsimMuscleStates.OsimMuscleStates(osim_model, muscle_list=None)

A class to extract the muscle states (moment arms and force properites) of the given OpenSim model

reset()

getWrapingCoords()

Extract the wrapping coordinates of the given muscle list. In addition, the coupling coordinates when calculating moment arms were extracted.

For a given muscle list, outputs of this function is a dictionary:

Keywords || list of coordinates muscle 1: coordinate 1, coordinate 2

coordinate 3,

muscle 2: coordinate 1

coordinate 3, coordinate 4 coordinate 5, coordinate 6,

…

getCoordRanges()

Extract the motion ranges of given coordinates in an OpenSim model.

Outputs of this function is a dictionary with the coordinate names as keywords

Keywords || list

coordinate 1: [lower bound, upper bound] coordinate 2: [lower bound, upper bound] coordinate 3: [lower bound, upper bound] …

getMomentArms(save_path, speedy=False)

calcualte moment arms of a muscle at different coordinates it wrapped.

Parameters

wrapping_coordinatedictionary

The dictionary that contains the muscles list and their wrapping coordinates. If not provide, will calculate from the above getWrapingCoord function.

coordinate_range: dictionary

The dictionary that contains the motion ranges of the joint lists that been wrapped by the muscles. if not provided, generate from the above getWrapingCoord function.

save_path: string

The path to save muscle-specific force map files, if not provided, not saving…

speedy: boolean

If True, select a lower number of particles, checking notes, iterations to speed up the optimization process.

Returns

self.moment_arms: dictionary

The dictionary that contains the moment arms that were calculated from the opensim model with the given inputs

getMuscleForceMaps(save_path, speedy=False)

get the muscle force maps from OpenSim models.

Parameters

save_path: string

The path to save muscle-specific force map files, if not provided, not saving…

speedy: boolean

If True, select a lower number of particles, checking notes, iterations to speed up the optimization process.

Returns (NONE)

self.force_maps: dictionary

The dictionary that contains the muscle force maps that were calculated from the opensim model with the given inputs