Gyroscopic Power Generator Research Articles

Analytical and Experimental Study on Gyroscopic Power Generator with Power Feedback

Analytical and Experimental Study on Gyroscopic Power Generator with Power Feedback

Study on Motor-Driven Gyroscopic Power Generator

A gyroscopic power generator is developed which generates 1.8 W by using a rotor of 100 mm diameter spinning at 500 rpm. In the conventional vibration generators which use simple vibration, the power was less than several tens of mW in the wearable size. The gyroscopic generator increases the inertia force by spinning the pendulum in high speed and causing the gyro effect. Also a mathematical model is developed which calculates generated power considering the gyro effect, electromechanical transformation and the gear loss. The calculated powers closely coincided with experimental ones in the range from 1 mW to 1.8 W. Finally the performance of generators which have the same device sizes and rotor spinning speeds as those of 2.5" and 3.5" HDD are calculated. They generate 0.72 W and 1.8 W respectively which show a possibility to be used not only for IoT's but also for motor driving sources used in, for example, wearable air conditioners.

Study on dynamic characteristics of gyroscopic power generator

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.

Passive Control of Gyroscopic Power Generator

Passive Control of Gyroscopic Power Generator

Transient Analysis of Gyroscopic Power Generator

Dynamics of the gyroscopic power generator is studied which produces high speed rotation of magnets from low-frequency vibrations such as human body movement. First the equation of motion of the rotor is derived. Next, the equation is solved numerically and the effects of initial conditions, damping coefficient, inertia moments and axis radius on the stability of rotation are clarified. Also a design guideline for the stable generator is presented. Next an approximate solution for the transient response is obtained to clarify the mechanism of transient vibration. Finally, the transient response is observed experimentally and the validity of the numerical and approximate analyses is verified.

PRE-13 STUDY ON GYROSCOPIC POWER GENERATOR : 2ND REPORT, IMPEDANCE CONTROL FOR STABLE OPERATION(MM/Micro/Nano Precision Equipments IV,Technical Program of Oral Presentations)

Supplying electric power to information and communication devices is a critical issue for both current mobile networks and coming ubiquitous systems. To achieve this, we focus on dynamic energy conversion systems that utilize human vibrations in daily life. The gyroscopic power generator has a rotor, which moves three dimensionally and spins at a high speed from low frequency vibrations, such as human movements. In this paper, simple equations that indicate the relationships among input vibration, rotor movement, impedance of the output circuit, and the critical conditions for stable rotation are derived. Especially, phase difference is suitable parameter for stability judging. Switching a circuit after watching this parameter through sensing coil enables impedance control.

PRE-12 STUDY ON GYROSCOPIC POWER GENERATOR : 1ST REPORT, PROTOTYPE AND ITS FUNDAMENTAL CHARACTERISTICS(MM/Micro/Nano Precision Equipments IV,Technical Program of Oral Presentations)

Energy scavenging is one of the solutions for realization of wireless sensor networks. A gyroscopic power generator which generates high speed rotation of permanent magnets using vibrations of human body in daily life is developed. In this report, a prototype generator and its fundamental characteristics based on the analysis of rotor dynamics are presented. High level potential of the generator and its availability to a mobile phone is verified.

Development of Gyroscopic Power Generator

In order to solve the energy supply problem for ubiquitous equipments, a gyroscopic power generator is proposed which utilizes kinetic energy of human movement. In the generator, a rotor increases spinning velocity by the precession and friction caused by input vibration. In this paper, first, the structure and the power generation principle of the generator are explained. Next, an analytical method of the rotor movement is presented and validity of the analysis is verified by the experiment using a prototype generator. Finally, the amount of the maximum power generation is forecasted to show the potential ability of the generator.