JETTING VALVE CONTROLLING OPERATION DISTANCE BY CLOSED LOOP

摘要

The present invention relates to a jetting valve measuring movement stroke of a discharge pestle unit in real time by including a contact type displacement sensor and a high-speed processor and always moving as much as the desired height by controlling the height at the same time based on the measured movement stoke. According to the present invention, the jetting valve controlling operation distance in real time by a closed loop includes: a nozzle unit discharging a fluid supplied from the outside; the discharge pestle unit repeatedly moving in a vertical direction by being inserted into the nozzle unit and discharging the fluid through the nozzle unit; a pestle operating unit connected to an upper end of the discharge pestle unit and repeatedly operating the discharge pestle unit in the vertical direction; a measurement sensor unit connected to the upper part of the discharge pestle unit and measuring the vertical movement stroke of the discharge pestle unit in real time; a piezoelectric actuator installed to be in contact with the pestle operating unit and vertically operating the pestle operating unit while vibrating by power supplied from the outside; and a control unit controlling the voltage of the power supplied to the piezoelectric actuator so that a vertical movement stroke value of the discharge pestle unit measured by the measurement sensor unit in real time always maintains a desired value.;COPYRIGHT KIPO 2019