actuator file of static optimization

Provide easy-to-use, extensible software for modeling, simulating, controlling, and analyzing the neuromusculoskeletal system.
POST REPLY
User avatar
z imn
Posts: 35
Joined: Sun Sep 17, 2017 7:11 am

actuator file of static optimization

Post by z imn » Tue Aug 28, 2018 6:23 am

hello dear frineds
i work on static optimization of squat motion in GUI with rajagopal model.
my question is about the actuator file. i set the optimal forces in the actuator file and i got pretty good results.( otherwise the reserve forces are smaller than id output forces) but some activations are greater than 1. for exampe i attached two figure of forces and activations for pelvis tilt. may be please tell me that are my results correct? (when i increase the optimal force, the reserves increse and they become asame the id output)
the constraint violation is good but performance is so high.below is a part of performance and constraint violation .


time = 8.1 Performance =113.193 Constraint violation = 7.1653e-013

time = 8.11 Performance =132.42 Constraint violation = 7.79462e-011

time = 8.12 Performance =147.355 Constraint violation = 1.39866e-010

time = 8.13 Performance =160.488 Constraint violation = 4.50328e-010

time = 8.14 Performance =183.16 Constraint violation = 3.81495e-010

time = 8.15 Performance =205.945 Constraint violation = 4.50307e-011

time = 8.16 Performance =206.53 Constraint violation = 8.1939e-010

time = 8.17 Performance =204.775 Constraint violation = 2.2602e-010

time = 8.18 Performance =218.773 Constraint violation = 2.01003e-011

time = 8.19 Performance =238.044 Constraint violation = 1.48726e-010

time = 8.2 Performance =266.057 Constraint violation = 4.78695e-010

time = 8.21 Performance =303.149 Constraint violation = 2.19207e-010

time = 8.22 Performance =346.466 Constraint violation = 2.15759e-010

time = 8.23 Performance =395.451 Constraint violation = 9.89275e-011
Attachments
Doc1.docx
(441.46 KiB) Downloaded 31 times

Tags:

User avatar
Thomas Uchida
Posts: 1792
Joined: Wed May 16, 2012 11:40 am

Re: actuator file of static optimization

Post by Thomas Uchida » Wed Aug 29, 2018 2:18 pm

i work on static optimization of squat motion in GUI with rajagopal model.
Have you confirmed that this model is suitable for the range of motion you are investigating? See Rajagopal, A., Dembia, C.L., DeMers, M.S., Delp, D.D., Hicks, J.L., Delp, S.L. Full body musculoskeletal model for muscle-driven simulation of human gait. IEEE Transactions on Biomedical Engineering, Vol. 63 (9), 2016: http://nmbl.stanford.edu/wp-content/upl ... al2016.pdf (page 11, paragraph before Conclusion section).

User avatar
z imn
Posts: 35
Joined: Sun Sep 17, 2017 7:11 am

Re: actuator file of static optimization

Post by z imn » Sat Sep 01, 2018 8:35 am

tanks for your reply
yes i searched and this model is sutible for squat motion

POST REPLY