Due to the inconvenience of the conventional intravenous drip frame, the piggyback intravenous drip frame is developed to ensure better mobility of the patient. However, the current design of the piggyback intravenous drip frame leads to a lack of balance control and increment of blood returning. To this end, this work aims to solve this problem with proportional-integral-derivative (PID) control techniques and an inverted-pendulum system such that a reliable system may be applied to facilitate patient’s mobility and ensure the patient’s safety with compensating the inclination angle of the piggyback intravenous drip frame. Therefore, the reduction of blood returning and the balance control of the piggyback intravenous drip frame can be achieved.

Balance Intravenous Drip Frame, PID control