Abstract：To solve the energy supply problem of self-powered Magneto-rheological damping modulator system, a vibration energy harvesting system based on pulse fluid flow transducer is put forward, in which energy transducer process is vibration energy→fluid flow energy→mechanical energy→electrical energy to realize vibration energy harvesting. Analytical model of vibration energy harvesting system, which is composed of gear motor, flywheel and permanent magnet generator, is set up. Output voltage, power conversion and conversion efficiency of the pulse fluid flow transducer are simulated via Matlab software in the condition of sine vibration. In order to verify the rationality of the analytical method, a kind of vibration energy harvesting device based on pulse fluid flow transducer is designed and fabricated. The vibration energy harvesting system is tested by J95-I type shock absorber test-bed. Under the sinusoidal excitation condition, the theoretical voltage characteristics are compared with those from tests, and the theoretical efficiencies are compared with experimental efficiencies. It shows that vibration energy harvesting system can implement to vibration energy harvesting, in which energy conversion efficiency reach to 48.65% and average output power up to 37.4 watt in the condition of load of 30 ohm.
2013, Vol. 32 
