Abstract: A gas capture system includes a first heat exchanger that exchanges heat between cold heat of a fuel that is vaporizing and a first gas mixture to cool the first gas mixture, a first dehumidifier that dehumidifies the first gas mixture cooled through the first heat exchanger, a first compressor that presses the first gas mixture passing through the first dehumidifier, a first separation device that separates a second gas mixture including a reference gas from the pressed first gas mixture, and a liquefier that liquefies the reference gas to generate a reference liquid.

Abstract: A velocity control method for use in a servo motor having a disturbance eliminator is described. The velocity control method includes the steps of calculating a control torque input value based on a desired target velocity input value and an output velocity value of an actual mechanical model, adding a disturbance torque value to the control torque input value to input the added result to the mechanical model, inputting the control torque input value to a virtual model to calculate an estimation velocity according to the control torque input value, calculating a corrected torque based on a velocity value difference between the output velocity value of the mechanical model and the estimation velocity value of the virtual model, and reflecting the corrected torque on the control torque input value. Accordingly, although unknown disturbances are input to the control system, a velocity error can be conversed into zero as closely as possible to enable an accurate velocity control.