HESC 427/690
Biomechanics II / Biomechanics Methods

Spring, 2009

Tentative Schedule, Policies, Handouts, and Assignments

Instructors: James G. Richards, Ph.D., Office: 345 McDowell Hall, Phone: 831-8372, email: jimr@udel.edu, Office Hours, 10-12am Wed.

Thomas Kepple, M.S., Office: 210A Human Performance Laboratory
Phone: 831-7029, email: tkepple@udel.edu
  Sarah Trager, MS, Office: Biomechanics Laboratory
Phone: 831-8212, email: strager@udel.edu
 

 
Time: Thursday, 5:00-8:00pm
Location: 101 McDowell Hall
Overview: This course focuses on the mathematical approaches used to analyze human motion in three dimensions. Using the LabView programming language, students will implement the mathematical concepts discussed in class to measure the positions, forces, moments, and powers generated in the lower extremities during ambulation, from subject data collected in-class using the Motion Analysis system and forceplates. Through this process, students are expected to obtain a comprehensive understanding of the details and issues associated with the analysis of human motion.
Textbook: Bishop, Robert H., LabVIEW 8 Student Edition, Prentice Hall, Upper Saddle River, NJ, 2007.  Note: This text comes with LabVIEW 8.2.1 (or 8.5) Student Edition.  Make certain the text contains the accompanying CD prior to purchase.
Grading: Homework will constitute 70% of the course grade.  Quizzes will constitute 30% of the course grade.

Homework:
  • All work should be turned in as part of the assignment.  Answers unaccompanied by documentation will not be accepted.
  • All assignments should be turned in on time.  5% will be deducted from the assignment grade for each day it is late.
  • Since assignments cannot be performed in class, students will follow the honor system.
  • Students are expected (and encouraged) to discuss problems and methodologies as a group outside of class.  However, each student should be responsible for the completion of his/her own assignments.
  • Email all assignments to: jimr@udel.edu
  • Please label all assignments by assignment number and part (i.e. Assign1Part1.vi)
Downloads: To download handouts, especially data and software,  Right Click, then select Save Target As, and save the file.
To download the VRML viewer, click here.

Date Topic Handout(s)/ LabView Code Assignment Assignment Answers
February 12 Course Overview, Expectations, Introduction to software, Collection of motion data ReadMotionFilesHHS.zip, Marker Image, Marker Description, walk.trb, walk.anb, static.trb, forcepla.cal, personal.dat

Obtain and Install LabView, Read Chapters 1, 2 & 4 in textbook
Assignment #0

Heel Marker Plot
February 19 Panels, diagrams, tools, execution, debugging, Arrays
Assignment #1  
February 26 Sequence structures, Loop structures and graphing OFA-AOF.vi, OFA-FAO.vi, OFA-FOA.vi Assignment #2  
March 5 SubVI's, 2D transformations,
Constructing 3D Axes 		Revised Read_Motion_Files_HHS.vi, Two-dimensional Transformations Involving Rotation, 2D Powerpoint, Three-Dimensional Transformations, Locating Hip Joint Centers Assignment #3 Hip centers, Pelvic coordinate systems
March 12
3D transformations, Using virtual markers
Locating Knee and Ankle Joint Centers Using Static Markers, In-Class Powerpoint Presentation (PDF)
Assignment #4
 Non-anatomical Rotation Matrices
March 19
Finding 3D joint centers locations, Constructing anatomical coordinate systems

 

Assignment #5
Anatomical Rotation Matrices
March 26 Euler angles Calculating Joint Angles Using Euler's Method, YZY Euler Animation (VRML)
Assignment #6
Joint Angles
April 9
Helical angles
Joint coordinate angles, Overview of inverse dynamics
Joint Coordinate Angles(web page), Helical Axis Joint Angles, Helical Axis Animation (VRML)
Assignment #7
 Joint Angles
April 16 Processing forceplate data, Finding segment COM locations Forceplate Calibration File, Joint Forces and Moments, Zatsiorsky and Seluvanov Anthropometric Data, Composite Anthropometric Data Assignment #8 Segment COM locations, Rt P&D Vectors, Lt P&D Vectors
April 23 Calculating segment reaction forces  
Assignment #9
Ground and Segment Reaction Forces
April 30 Moments about the center of mass, Segment inertial tensors Hanavan’s Inertial Tensors Assignment #10 MCG Global
May 7
Segment alphas and omegas, joint moments
Calculation of segment angular velocities and accelerations in local space
 Assignment #11 MCG Local, Omegas, Alphas, Local Distal Moments, Local Proximal Moments
May 14 Joint powers Spherical Fit Algorithm, Reference for SF Algorithm, Algorithm Code
Joint Powers