中文摘要：

为了能实现对轻、薄、小物料的稳定输送,提出了一种压电双晶片为驱动源配重式直线振动输送器。设计了压电振动输送器的结构并分析了其工作原理,建立了系统的动力学模型,推导出了双自由度系统的振动位移表达式以及近似得到系统的固有频率,制作了振动输送器的样机,并进行了试验测试。试验结果表明：在系统共振频率为120.5Hz,料道振动位移达到最大,3个测试点分别为39μm,34μm,37μm,但不影响物料输送,工作频率范围为117～124Hz,处于共振频率最大输送速度达到52mm/s。与同型号的电磁式振动输送器相比,在共振条件下研制的样机的电流仅为电磁式的16.58%,速度是其1.36倍,振幅为电磁式的32.38%,噪音降低了33dB。设计的输送器具有送速度稳定、节能、噪音小等优点。

英文摘要：

A piezoelectric bimorph driven linear vibrating feeder with counterweight is proposed to transport light, thin and small materials. The piezoelectric vibration feeder structure was designed and the working principle was analyzed, then the dynamic model of the system was established, the vibrating displacement expressions of two degrees of freedom system was deduced and the natural frequency was analogously obtained. And a prototype was designed and tested. The results show that the vibration displacement is maximum in the resonant frequency of 120.5 Hz,the displacement of three test points are 39 μm, 34 μm, and 37μm respectively, and the transportation of materials work well. When the working frequency ranges from 117 Hz to 124 Hz, the maximum transport speed is 52 mm/s at resonant frequency. Compared with the same type of electromagnetic vibrating feeder under resonant conditions, the current is only 16.58% of it, and the speed is 1.36 times than it, the amplitude is 32.38% of it, and the noise reduces by 33 dB. The piezoelectric bimorph driven linear vibrating feeder shows a good performance of sta- bility, energy-saving and low noise.