danpaluska

a trace of the annual movement of the Sun on the sky - danpaluska

jb. left side.7 trials. time spacing = twenty four Hz 1000 800 600 mm 400 200 0 -200 0 200 400 600 mm 800 1000 1200 Figure 1: Sagittal plane view of leg joint centers during a single step, heelstrike to heelstrike. Markers are the knee indicate different phases of the gait and are referred to in further plots. Exoskeleton Memo. 14.06.2004.v1. Knee Springlike Behavior During Walking. dan paluska. june 14, 2004. 1 Analysis Part 1. Fitting mono-articular linear springs to 5 subjects. Gait data from 5 subjects was analyzed. The subjects were walking at self selected walking speeds r - danpaluska

ang vs tau, marko no weight data, subject jd 50 50 gas length vs ankle torque 0 ankle moment[Nm] ankle moment[Nm] 0 -50 s1 s2 s3 s4 s5 - swing -50 s1 s2 s3 s4 s5 - swing -100 -100 -150 -150 -200 -0.6 -0.4 -0.2 ankle angle[rad] 0 0.2 -200 0.33 0.34 0.35 0.36 0.37 0.38 est gastroc length[m], maA = 0.05, maK = 0.025 ankle torque[Nm], subject mass[kg] = 50.1, height[m] = 1.58 50 knee angle[rad] vs ankle torque[Nm] 50 0 ankle moment[Nm] ankle moment[Nm] 0 -50 s1 s2 s3 s4 s5 - swing -50 s1 s2 s3 s4 - 48% s5 - swing -100 -100 -150 -150 -200 -1 -0.5 0 knee angle[rad] knee ang - danpaluska

sagittal plane positions, subject aw 0.4 sagittal plane moments, ankle(blue) knee(red) hip (green) 150 0.2 100 0 50 -0.2 0 -0.4 -50 -0.6 -100 -0.8 -150 -1 0 20 40 60 80 100 -200 0 20 40 60 80 100 sagittal plane velocites, 7 trial average and standard dev 8 6 4 2 0 -2 -4 -6 -8 sagittal plane powers 600 500 400 300 200 100 0 -100 -200 0 20 40 60 80 100 0 20 40 60 80 100 *sagittal plane positions, subject jb 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 -1.2 sagittal plane moments, ankle(blue) knee(red) hip (green) 100 50 0 -50 -100 -150 0 20 40 60 - danpaluska

ankle springs memo. july 28 2004. rev 5. djp. compare 1. monoarticular spring - Lever vs Pulley? 2. biarticular gastroc-like spring - levers vs pulleys? 3. both mon and biart spring in parallel. - levers vs pulleys? 4. clutched mono and biart springs with common elastic element. 5. solutions with and without positve and negative power weightings. [Abbott et al 1952] negative 1/3 to 1/7 as costly. [DeLooze et al 1994] neg work 0.3 to 0.5 as costly. we will use 0.5 as conservative factor. emg and ankle muscle information from the literature. human walking book. indicates gastrocnemius(gas) and s - danpaluska

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start that electronics project you have been putting off. - danpaluska