| 摘要 |
PROBLEM TO BE SOLVED: To set a reference point of a signal without variation thereof so as to simply obtain a relation between the reference point of the signal and a reference rotational angle of a cam.SOLUTION: A liquid transportation device comprises: a tube; a cam; fingers disposed between the tube and the cam; a drive section having a rotor rotated by driving force of an actuator and a deceleration section decelerating rotation of the rotor and transmitting the rotation thereof decelerated to the cam; a cam side measurement section outputting a cam side reference signal indicating the effect that the cam reaches a predetermined rotation angle; a first measurement section outputting a first signal when the rotor is rotated; a second measurement section outputting a second signal indicating the effect that the rotor reaches the predetermined rotation angle; and a discrimination section discriminating a reference point of the first signal on the basis of the second signal output subsequent to output of the cam side reference signal. |
