Torque-Meter Less Treadmill Measurement of Runner''s Gait Event

• Main Authors: Chih-Wei Chang, 張智偉
• Other Authors: Tse-Liang Yeh
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/43417173058927590371

碩士 === 國立中央大學 === 光機電工程研究所 === 96 === The main purpose of this thesis is to calculate real power on AC servo motor of treadmill. The real power can express human gait on treadmill to PC base. The main core of measurable system is DSP MCU, and measure three phase current、voltage of AC servo motor. After measurement ,we use external torque sensor to be opposite with real power. Using torque sensor measurable system and PC, we can establish measurable platform for human gait. Under mapping out mechanical hardware, electrical hardware and firmware, the system measures voltages、 currents、torque and rotate speed from AC servo motor and save them as digital data to memory in DSP MCU. After measurement, the data was calculated through FIR filter, we can obtain three power. Through System identification, we can decouple real power and react power. Besides, we can obtain torque from external torque sensor、rotate speed from encoder.By the two parameters can obtain mechanical power. Finally, using statistical signal process method we compare torque and real power. After that, we realize torque and real power have directly correlation. When we realized data have directly correlation, we can replace real power with torque to express human gait. Thus we IV can measure human running gait use real power.