DESIGN AND IMPLEMENTATION OF ENERGY HARVESTING DEVICE USING VEHICLE SUSPENSION SYSTEM
Vibration energy is widely distributed in people's daily life. Researching on a vibration device to transform vibration energy into electrical energy, and act as a supplementation to the power generation system, is of great significance to better developing and exploiting new energy. This thesis constructs an experiment system which consists of permanent-magnet linear generator, digital signal processor (DSP), Energy Management System. The micro controller unit (MCU) is adopted to control simulated vibration environment. The MCU control circuit and DC-DC converter circuit have been designed, and the corresponding printed circuit boards have been made. Based on the fuzzy proportional-integral (PI) control algorithm, the output voltage reaches 3.0V stably when the vibration frequency and load resistance are 10Hz and 20Ω, respectively. Experiment results have verified the practicability of our power generation system's design scheme using automobile vibration and the validity of fuzzy PI control algorithm the power management system used.