Most previous studies on energy collectors have mainly focused on the improvement of output voltage and power. If it is possible to generate corresponding feedback signals based on different sources of stimulation, it would be possible to achieve self‐powered sensing designs for energy collectors in fields such as signal feedback and motion monitoring. This paper proposes a piezoelectric‐electromagnetic composite harvester that combines a magnetic levitation structure with a spring structure. After experimental testing, the maximum output voltages of the piezoelectric sheets in the two scenarios were 6.3 and 2.7 V, respectively, and the maximum output power was 31.22 and 39.21 mW for the coils. By comparing the output performance of the energy harvesting device under two different excitation methods, the influence of the spring's elasticity on the movement of the magnet in the oscillator under different excitation methods was analyzed and summarized. When the device is subjected to vibration, due to the energy storage property of the spring, the peak value of the voltage output decreases, and there is more subsequent vibration. The coupled model proposed in this study provides a reference for the design of energy harvester.
Li et al. (Wed,) studied this question.