Abstract
To solve energy supply problems for ubiquitous equipment, dynamic analysis of a gyroscopic power generator that uses the kinetic energy developed from human movement is proposed. In the generator, a rotor increases its spinning velocity by precession and friction caused by input vibration. This paper first presents an analytical method of rotor movement. The equations of motion are derived by using Euler's equation and their approximate solution is obtained by assuming the spinning velocity is constant. Then the output power of the prototype generator is estimated by using the solution. The output power of the ideal generator was shown to be 0.11 W and 0.85 W during walking and running, respectively.
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