March, 2019
Weekly Meeting 13 (3/25/19)
Mar. 25, 2019—SNR Recalculated baseline without the co-contractions and this raised all of the values Initial contraction classifier Recorded raw EMG, Tested using: pure extensor test pure flexor test partial extensor/flexor Tustin approximation is working well Includes a discrete integral in the calculation allowing us to smooth as we go Helps with the flow and speed of...
Pre-processing Results at Varying Contraction Levels
Mar. 19, 2019—Testing of Tustin Approximation Low Pass filtering at 3 Hz. Varying levels of contraction clearly visible.
Progress Report 7 (3/20/19)
Mar. 19, 2019—Previous Goals Last week, we sought to test and finalize the acquisition and preprocessing code, troubleshooting the infinite loop error. We also strived to implement and test the EMG differential and buffering code and finish SNR analysis (determine a primary subject and find the ideal electrode placement). In terms of hardware, we wanted to incorporate...
Example Manually Processed Data
Mar. 19, 2019—Example of manually processed data: The average of the baseline for each muscle (flexor and extensor) was calculated and then subtracted from the entire data set. The absolute value was taken, and the result was graphed.
Weekly Meeting 12 (3/18/19)
Mar. 18, 2019—Emg Calculated SNR Should consider co-contractions as signal, not noise Should increase SNR values Servo motor Control angle We should think about how you can compare servo motor to prosthetic Prosthetic uses variable speed, servo does not Ottobock They will send us an address to send the arm this week Will get appraised for how...
Weekly Meeting 11 (3/11/19)
Mar. 11, 2019—Letter of Support We mentioned last semester We will check in with Dr. Walker EMG We have tested everyone and calculated SNR Currently Christian has best SNR Will retest Ally and Rebecca Matlab processing We will do correlations and matlab preprocessing to correlate MAV to hand angle Import equation into arduino code Two bipolar pairs...