Development of a Metal-Cantilever Electrostatic Vibration Power Generator Combined With Potassium Ion Electret Technique

2018 ◽  
Author(s):  
Hideaki Koga ◽  
Hiroyuki Mitsuya ◽  
Yuji Toyama ◽  
Tatsuhiko Sugiyama ◽  
Hiroshi Toshiyoshi ◽  
...  
Keyword(s):  
Electric Field ◽  
Output Power ◽  
Mechanical Vibration ◽  
Potassium Ion ◽  
Nonlinear Frequency ◽  
Comb Drive ◽  
Power Generator ◽  
Frequency Responses ◽  
High Acceleration ◽  
Energy Transducer

We have developed a metal-cantilever electrostatic vibration power generator that has comb-drive electrodes made of a SOI wafer at the tip of the cantilever. The comb-drive electrodes in which built-in electric field is given by potassium ion electret technique acts as an energy transducer from mechanical vibration power to electrical one. The metal cantilever part is formed separately, and assembled with the comb-electrodes on a bakelite plastic. This device showed strong nonlinear frequency responses, in which spring hardening was observed when applied acceleration was small while spring softening when high acceleration. About 30μW output power was observed at 0.03GRMS acceleration, and the maximum 90% conversion efficiency achieved at 0.01GRMS acceleration.

scholarly journals OS4-1-8 Electro Micro Power Generator Using Potassium Ion Electret Forming on a Comb-drive Actuator

2012 ◽  
Vol 2012.4 (0) ◽  
pp. 105-106
Author(s):  
Masato Suzuki ◽  
Hiroki Hayashi ◽  
Akito Mori ◽  
Tatsuhiko Sugiyama ◽  
Gen Hashiguchi
Keyword(s):  
Potassium Ion ◽  
Comb Drive ◽  
Power Generator ◽  
Micro Power ◽  
Micro Power Generator

Optimal Design of Vibration Power Generator for Low Frequency

2009 ◽  
Vol 147-149 ◽  
pp. 426-431 ◽  
Author(s):  
Zdenek Hadas ◽  
Vladislav Singule ◽  
Cestmir Ondrusek
Keyword(s):  
Optimal Design ◽  
Output Power ◽  
Wireless Sensors ◽  
Electrical Power ◽  
Mechanical Vibration ◽  
Low Frequency ◽  
Electrical Energy ◽  
Power Generator ◽  
Faraday’S Law ◽  
Electromagnetic Energy Harvesting

This paper deals with an optimal design of an electromagnetic energy harvesting generator for supplying wireless sensors with energy. The developed device is complex mechatronic system which generates an electrical power from an ambient low frequency mechanical vibration by use of a suitable electromagnetic generator. This device is excited by ambient mechanical vibration and electrical energy is harvested due to Faraday’s law. The design of this vibration power generator results from development cycles and the final generator can provide sufficient electrical energy for wireless sensors. The vibration power generator is tuned up to frequency of vibration 17 Hz and harvested output power depends non-linearly on level of vibration. The vibration power generator operates in level of vibration 0.1 – 1 G peak and output power is in range 2 – 25 mW.

Dynamic and Compliant Characteristics of a Cartesian-Guided Tripod Machine

2004 ◽  
Vol 128 (2) ◽  
pp. 494-502 ◽  
Author(s):  
Jeng-Shyong Chen ◽  
Wei-Yao Hsu
Keyword(s):  
High Speed ◽  
Degrees Of Freedom ◽  
Mechanical Vibration ◽  
Maximum Amplitude ◽  
High Gain ◽  
Velocity Change ◽  
Flexible Mode ◽  
Look Ahead ◽  
High Acceleration ◽  
Acceleration And Deceleration

This paper is focused on the dynamic and compliant characteristics of a three-axis parallel kinematic machine called a Cartesian-guided tripod (CGT), which has a passive leg locking the platform three rotational degrees of freedom. Because no constraint mechanism is perfect with infinite rigidity, a compliance model has been developed to determine the maximum amplitude of the passive-leg parasitic motions using given loads. System compliance, dynamic characteristics, vibration modes, and servo-contouring errors of the CGT driving system have also been evaluated under high-speed machining conditions. The nonlinear dynamic effects, such as inertia and gravity, can be controlled within acceptable accuracy using the high-gain servo-feedback control techniques. The CGT dominant flexible mode occurs on the horizontal platform-leg vibration. The platform-leg flexible mode can produce significant jerk-induced mechanical vibration on the platform when a sudden velocity change is commanded. Look-ahead Cartesian-based path acceleration and deceleration control was found to be an efficient tool to reduce the jerk-induced mechanical vibration, although the CGT was drive controlled at the joint level. It was found that at high acceleration application, such as high-speed mold and die machining, the elastic elongation of the driving leg caused by the high acceleration force became the dominant contouring error sources.

Design of automatic power generator using mechanical vibration

2002 ◽  
Vol 2002 (0) ◽  
pp. 146-148
Author(s):  
Jun OKAZAKI ◽  
Kenji SHIBA ◽  
Hiroshi HOSAKA ◽  
Kiyoshi ITAO
Keyword(s):  
Mechanical Vibration ◽  
Power Generator

Stress Analysis and Output Power Measurement of an n-Mg2Si Thermoelectric Power Generator with an Unconventional Structure

2013 ◽  
Vol 43 (6) ◽  
pp. 1620-1629 ◽  
Author(s):  
Tatsuya Sakamoto ◽  
Tsutomu Iida ◽  
Yota Ohno ◽  
Masashi Ishikawa ◽  
Yasuo Kogo ◽  
...  
Keyword(s):  
Stress Analysis ◽  
Thermoelectric Power ◽  
Output Power ◽  
Power Measurement ◽  
Power Generator ◽  
Thermoelectric Power Generator

Micro-power-generator for energy harvesting from vortex induced vibration

2020 ◽  
Vol 64 (1-4) ◽  
pp. 573-580 ◽  
Author(s):  
Yuansheng Chen ◽  
Cong Gu ◽  
Hao Wang ◽  
Jinhao Qiu ◽  
Sunchong Zhao
Keyword(s):  
Wind Speed ◽  
Output Power ◽  
Maximum Output Power ◽  
Sensor Nodes ◽  
Structural Vibration ◽  
Maximum Output ◽  
Power Generator ◽  
Piezoelectric Energy ◽  
Micro Power ◽  
Micro Power Generator

A micro-power-generator is developed with piezoelectric ceramics, which can convert the structural vibration energy generated by wind power into electricity to provide energy for micro-devices such as wireless sensor nodes. The vibration modes of the device are analyzed. The standard interface circuit for piezoelectric energy recovery and LTC3588-1 voltage stabilization circuit are selected, and the hardware circuit of the device is designed. The output voltage and power characteristics of micro-power-generator were analyzed under different loads, frequencies and amplitudes. The experimental results show that under the same wind speed, When the blunt body is a cuboid, the power generation effect of this device is the best under the optimal load, with the maximum output power of 350.7 μW. Under the same load with the same shape and structure, the load voltage and output power increase with the increase of wind speed.

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