| Summary: | 碩士 === 華梵大學 === 機電工程學系 === 102 === A new electro-mechanical theorem for alternating the behaviors of a mechanical system is proposed. Two voice-coil motors (VCM), one is the sensor and the other is the actuator, are mounted on a beam structure. An electrical circuit connected between the two VCMs is used to alternate stiffness and mass of the beam structure, respectively. Two kinds of circuit, the differentiator and the integrator, are individually studied. Experimental results show that the system fundamental frequency can be increased from 152 Hz to 210 Hz as increasing the gain of the integrator. On the contrary, the spring constant can be decreased and the system fundamental frequency can be decreased from 152 Hz to 96 Hz as the circuit is connected inversly. The effect of the differentiator is not carried out due to the reaction of the power amplifier is too slow.
|
|---|
