벤더형 압전밸브의 유동특성에 관한 연구

A solenoid actuator has some merits such as a long actuation displacement, a strong attraction force and a long durability but has also some weak points such as an attraction force depends on operating temperature and a very high power consumption. The drop off in attraction force in a color sorter is a very core parameter for user or consumer because the color sorter is used at the tropical and temperate regions. High power consumption also leads more and more energy consumption to use the color sorter. In order to design the piezoelectric driven pneumatic valve for color sorter, the flow dynamics were analyzed theoretically and the processes for fabrication of the multilayered piezoelectric actuator were researched.