Search found 9 matches

by Hans-Jochen Edenhart
Mon Feb 24, 2020 3:38 am
Forum: OpenSense
Topic: Theory and Publications
Replies: 1
Views: 1366

Theory and Publications

Hello all. The last few months I had to stop my practical work for writing some reports and documentation. The first part in my documentation was, to introduce IMUs in general, then the ones I use, the mathematic of quaternions and so on and so on. the next thing i would like to do, is to show how m...
by Hans-Jochen Edenhart
Tue Aug 06, 2019 2:04 am
Forum: OpenSense
Topic: coordinate system of the sensors
Replies: 7
Views: 1342

coordinate system of the sensors

hello all, i have my data from my IMUs converted so far. i am trying to find the correect coordinate system. but the movement goes always in the wrong direction, no matter how i transfer my coordinate system. i really have tried every possibility. i would be very thankful, if you could tell me, whic...
by Hans-Jochen Edenhart
Fri Aug 02, 2019 3:07 am
Forum: OpenSim
Topic: coordinates lower limb
Replies: 1
Views: 193

coordinates lower limb

hallo all,
could anyone please tell me where to find the coordinate systems of femur, tibia and calcn.
best regards
hajo
by Hans-Jochen Edenhart
Wed Jun 19, 2019 2:20 am
Forum: OpenSense
Topic: MatLab example
Replies: 4
Views: 1239

MatLab example

hello all.
I have taken a screenshot of the problem.
It would be great if someone could tell me what ia am doing wrong. i am not a matlab pro at all...
thanks for your help
by Hans-Jochen Edenhart
Tue Jun 04, 2019 12:13 am
Forum: OpenSim
Topic: If OpenSim suitable for IMU motion capture enhancement?
Replies: 6
Views: 726

Re: If OpenSim suitable for IMU motion capture enhancement?

Hi James and Yuri. I think i am just working on a very similar project. i am trying to simulate gait by an IMU sensor System and measure the GRFs with a preasure walk way. a former project simulated a knee bend with IMUs but with the help of a kinect camera (IR). My task would now be to do this just...
by Hans-Jochen Edenhart
Wed May 22, 2019 4:53 am
Forum: OpenSim
Topic: Data transfer with inertial sensor system
Replies: 2
Views: 363

Data transfer with inertial sensor system

hello all. I am still training to handle OpenSim as part of my practical semester. My task is to create a new model, but not with motion capture rather with an inertial sensor system (shimmer sensors). These Data I want to transfer with MatLab into OpenSim. So, does anyone have experinces in working...
by Hans-Jochen Edenhart
Thu May 16, 2019 1:18 am
Forum: OpenSim
Topic: Negative Mass after RRA
Replies: 0
Views: 189

Negative Mass after RRA

Hello. I was just beginning to think that i understood waht i am doing and why... BUT... the intermediate example "The Strength of Simulation: Estimating Leg Muscle Forces in Stance and Swing, Part II: Leg Muscle Force Estimation in Stance" is not doing what i want it to do. One of the exerises is (...
by Hans-Jochen Edenhart
Mon May 13, 2019 6:51 am
Forum: OpenSim
Topic: Help required in the given tutorials
Replies: 1
Views: 195

Help required in the given tutorials

Hello. My name is hajo and i am a mechanical engineering student from Dortmund/Germany and i want to write my bachelor thesis about OpenSim. I am the only one who is working with this software. It is rather difficult for me, that there is no one to discuss about problems and so on. I would be very t...